| Line 98... |
Line 98... |
output reg fifo_rx_wr_en,
|
output reg fifo_rx_wr_en,
|
output reg [DWIDTH-1:0] fifo_rx_data_in,
|
output reg [DWIDTH-1:0] fifo_rx_data_in,
|
|
|
//INTERFACE WITH REGISTER CONFIGURATION
|
//INTERFACE WITH REGISTER CONFIGURATION
|
input [AWIDTH-1:0] DATA_CONFIG_REG,
|
input [AWIDTH-1:0] DATA_CONFIG_REG,
|
|
input [AWIDTH-1:0] TIMEOUT_TX,
|
|
|
//INTERFACE TO APB AND READ FOR FIFO TX
|
//INTERFACE TO APB AND READ FOR FIFO
|
output reg fifo_tx_rd_en,
|
output reg fifo_tx_rd_en,
|
output TX_EMPTY,
|
output TX_EMPTY,
|
output RX_EMPTY,
|
output RX_EMPTY,
|
output ERROR,
|
output ERROR,
|
|
output ENABLE_SDA,
|
|
output ENABLE_SCL,
|
|
|
//I2C BI DIRETIONAL PORTS
|
//I2C BI DIRETIONAL PORTS
|
inout SDA,
|
inout SDA,
|
inout SCL
|
inout SCL
|
|
|
| Line 118... |
Line 121... |
assign TX_EMPTY = (fifo_tx_f_empty == 1'b1)? 1'b1:1'b0;
|
assign TX_EMPTY = (fifo_tx_f_empty == 1'b1)? 1'b1:1'b0;
|
assign RX_EMPTY = (fifo_rx_f_empty == 1'b1)? 1'b1:1'b0;
|
assign RX_EMPTY = (fifo_rx_f_empty == 1'b1)? 1'b1:1'b0;
|
|
|
//THIS COUNT IS USED TO CONTROL DATA ACCROSS FSM
|
//THIS COUNT IS USED TO CONTROL DATA ACCROSS FSM
|
reg [1:0] count_tx;
|
reg [1:0] count_tx;
|
|
reg [1:0] count_rx;
|
//CONTROL CLOCK AND COUNTER
|
//CONTROL CLOCK AND COUNTER
|
reg [11:0] count_send_data;
|
reg [11:0] count_send_data;
|
|
reg [11:0] count_receive_data;
|
|
reg [11:0] count_timeout;
|
reg BR_CLK_O;
|
reg BR_CLK_O;
|
reg SDA_OUT;
|
reg SDA_OUT;
|
|
|
|
reg BR_CLK_O_RX;
|
|
reg SDA_OUT_RX;
|
|
|
//RESPONSE USED TO HOLD SIGNAL TO ACK OR NACK
|
//RESPONSE USED TO HOLD SIGNAL TO ACK OR NACK
|
reg RESPONSE;
|
reg RESPONSE;
|
|
|
// TX PARAMETERS USED TO STATE MACHINE
|
// PARAMETERS USED TO STATE MACHINE
|
|
|
localparam [5:0] RX_TX_IDLE = 6'd0, //IDLE
|
localparam [5:0] IDLE = 6'd0, //IDLE
|
|
|
RX_TX_START = 6'd1,//START BIT
|
START = 6'd1,//START BIT
|
|
|
RX_TX_CONTROLIN_1 = 6'd2, //START BYTE
|
CONTROLIN_1 = 6'd2, //START BYTE
|
RX_TX_CONTROLIN_2 = 6'd3,
|
CONTROLIN_2 = 6'd3,
|
RX_TX_CONTROLIN_3 = 6'd4,
|
CONTROLIN_3 = 6'd4,
|
RX_TX_CONTROLIN_4 = 6'd5,
|
CONTROLIN_4 = 6'd5,
|
RX_TX_CONTROLIN_5 = 6'd6,
|
CONTROLIN_5 = 6'd6,
|
RX_TX_CONTROLIN_6 = 6'd7,
|
CONTROLIN_6 = 6'd7,
|
RX_TX_CONTROLIN_7 = 6'd8,
|
CONTROLIN_7 = 6'd8,
|
RX_TX_CONTROLIN_8 = 6'd9, //END FIRST BYTE
|
CONTROLIN_8 = 6'd9, //END FIRST BYTE
|
|
|
RX_TX_RESPONSE_CIN =6'd10, //RESPONSE
|
RESPONSE_CIN =6'd10, //RESPONSE
|
|
|
RX_TX_ADRESS_1 = 6'd11,//START BYTE
|
ADDRESS_1 = 6'd11,//START BYTE
|
RX_TX_ADRESS_2 = 6'd12,
|
ADDRESS_2 = 6'd12,
|
RX_TX_ADRESS_3 = 6'd13,
|
ADDRESS_3 = 6'd13,
|
RX_TX_ADRESS_4 = 6'd14,
|
ADDRESS_4 = 6'd14,
|
RX_TX_ADRESS_5 = 6'd15,
|
ADDRESS_5 = 6'd15,
|
RX_TX_ADRESS_6 = 6'd16,
|
ADDRESS_6 = 6'd16,
|
RX_TX_ADRESS_7 = 6'd17,
|
ADDRESS_7 = 6'd17,
|
RX_TX_ADRESS_8 = 6'd18,//END FIRST BYTE
|
ADDRESS_8 = 6'd18,//END FIRST BYTE
|
|
|
RX_TX_RESPONSE_ADRESS =6'd19, //RESPONSE
|
RESPONSE_ADDRESS =6'd19, //RESPONSE
|
|
|
RX_TX_DATA0_1 = 6'd20,//START BYTE
|
DATA0_1 = 6'd20,//START BYTE
|
RX_TX_DATA0_2 = 6'd21,
|
DATA0_2 = 6'd21,
|
RX_TX_DATA0_3 = 6'd22,
|
DATA0_3 = 6'd22,
|
RX_TX_DATA0_4 = 6'd23,
|
DATA0_4 = 6'd23,
|
RX_TX_DATA0_5 = 6'd24,
|
DATA0_5 = 6'd24,
|
RX_TX_DATA0_6 = 6'd25,
|
DATA0_6 = 6'd25,
|
RX_TX_DATA0_7 = 6'd26,
|
DATA0_7 = 6'd26,
|
RX_TX_DATA0_8 = 6'd27,//END FIRST BYTE
|
DATA0_8 = 6'd27,//END FIRST BYTE
|
|
|
RX_TX_RESPONSE_DATA0_1 = 6'd28, //RESPONSE
|
RESPONSE_DATA0_1 = 6'd28, //RESPONSE
|
|
|
RX_TX_DATA1_1 = 6'd29,//START BYTE
|
DATA1_1 = 6'd29,//START BYTE
|
RX_TX_DATA1_2 = 6'd30,
|
DATA1_2 = 6'd30,
|
RX_TX_DATA1_3 = 6'd31,
|
DATA1_3 = 6'd31,
|
RX_TX_DATA1_4 = 6'd32,
|
DATA1_4 = 6'd32,
|
RX_TX_DATA1_5 = 6'd33,
|
DATA1_5 = 6'd33,
|
RX_TX_DATA1_6 = 6'd34,
|
DATA1_6 = 6'd34,
|
RX_TX_DATA1_7 = 6'd35,
|
DATA1_7 = 6'd35,
|
RX_TX_DATA1_8 = 6'd36,//END FIRST BYTE
|
DATA1_8 = 6'd36,//END FIRST BYTE
|
|
|
RX_TX_RESPONSE_DATA1_1 = 6'd37,//RESPONSE
|
RESPONSE_DATA1_1 = 6'd37,//RESPONSE
|
|
|
RX_TX_DELAY_BYTES = 6'd38,//USED ONLY IN ACK TO DELAY BETWEEN
|
DELAY_BYTES = 6'd38,//USED ONLY IN ACK TO DELAY BETWEEN
|
RX_TX_NACK = 6'd39,//USED ONLY IN ACK TO DELAY BETWEEN BYTES
|
NACK = 6'd39,//USED ONLY IN ACK TO DELAY BETWEEN BYTES
|
RX_TX_STOP = 6'd40;//USED TO SEND STOP BIT
|
STOP = 6'd40;//USED TO SEND STOP BIT
|
|
|
//STATE CONTROL
|
//STATE CONTROL
|
reg [5:0] state_tx_rx;
|
reg [5:0] state_tx;
|
reg [5:0] next_state_tx_rx;
|
reg [5:0] next_state_tx;
|
|
|
//ASSIGN REGISTERS TO BIDIRETIONAL PORTS
|
//ASSIGN REGISTERS TO BIDIRETIONAL PORTS
|
assign SDA = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b0)?SDA_OUT:1'b0;
|
assign SDA = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b0)?SDA_OUT:1'b0;
|
assign SCL = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b0)?BR_CLK_O:1'b0;
|
assign SCL = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b0)?BR_CLK_O:1'b0;
|
|
|
//STANDARD ERROR
|
//STANDARD ERROR
|
assign ERROR = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b1)?1'b1:1'b0;
|
assign ERROR = (DATA_CONFIG_REG[0] == 1'b1 & DATA_CONFIG_REG[1] == 1'b1)?1'b1:1'b0;
|
|
|
//COMBINATIONAL BLOCK TO TX
|
|
|
//COMBINATIONAL BLOCK TO
|
always@(*)
|
always@(*)
|
begin
|
begin
|
|
|
//THE FUN START HERE :-)
|
//THE FUN START HERE :-)
|
//COMBINATIONAL UPDATE STATE BE CAREFUL WITH WHAT YOU MAKE HERE
|
//COMBINATIONAL UPDATE STATE BE CAREFUL WITH WHAT YOU MAKE HERE
|
next_state_tx_rx = state_tx_rx;
|
next_state_tx=state_tx;
|
|
|
case(state_tx_rx)//state_tx_rx IS MORE SECURE CHANGE ONLY IF YOU KNOW WHAT ARE YOU DOING
|
case(state_tx)//state_ IS MORE SECURE CHANGE ONLY IF YOU KNOW WHAT ARE YOU DOING
|
RX_TX_IDLE:
|
IDLE:
|
begin
|
begin
|
//OBEYING SPEC
|
//OBEYING SPEC
|
if(DATA_CONFIG_REG[0] == 1'b0 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b0)
|
if(DATA_CONFIG_REG[0] == 1'b0 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b0)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_IDLE;
|
next_state_tx = IDLE;
|
end
|
end
|
else if(DATA_CONFIG_REG[0] == 1'b1 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b1)
|
else if(DATA_CONFIG_REG[0] == 1'b1 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b1)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_IDLE;
|
next_state_tx = IDLE;
|
end
|
end
|
else if(DATA_CONFIG_REG[0] == 1'b1 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b0)
|
else if(DATA_CONFIG_REG[0] == 1'b1 && (fifo_tx_f_full == 1'b1 || fifo_tx_f_empty == 1'b0) && DATA_CONFIG_REG[1] == 1'b0 && count_timeout < TIMEOUT_TX)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_START;
|
next_state_tx = START;
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_START://THIS IS USED TOO ALL STATE MACHINES THE COUNTER_SEND_DATA
|
START://THIS IS USED TOO ALL STATE MACHINES THE COUNTER_SEND_DATA
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_START;
|
next_state_tx = START;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_1;
|
next_state_tx = CONTROLIN_1;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_CONTROLIN_1:
|
CONTROLIN_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_1;
|
next_state_tx = CONTROLIN_1;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_2;
|
next_state_tx = CONTROLIN_2;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_CONTROLIN_2:
|
CONTROLIN_2:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_2;
|
next_state_tx = CONTROLIN_2;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_3;
|
next_state_tx = CONTROLIN_3;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_CONTROLIN_3:
|
CONTROLIN_3:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_3;
|
next_state_tx = CONTROLIN_3;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_4;
|
next_state_tx = CONTROLIN_4;
|
end
|
end
|
end
|
end
|
RX_TX_CONTROLIN_4:
|
CONTROLIN_4:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_4;
|
next_state_tx = CONTROLIN_4;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_5;
|
next_state_tx = CONTROLIN_5;
|
end
|
end
|
end
|
end
|
RX_TX_CONTROLIN_5:
|
CONTROLIN_5:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_5;
|
next_state_tx = CONTROLIN_5;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_6;
|
next_state_tx = CONTROLIN_6;
|
end
|
end
|
end
|
end
|
RX_TX_CONTROLIN_6:
|
CONTROLIN_6:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_6;
|
next_state_tx = CONTROLIN_6;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_7;
|
next_state_tx = CONTROLIN_7;
|
end
|
end
|
end
|
end
|
RX_TX_CONTROLIN_7:
|
CONTROLIN_7:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_7;
|
next_state_tx = CONTROLIN_7;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_8;
|
next_state_tx = CONTROLIN_8;
|
end
|
end
|
end
|
end
|
RX_TX_CONTROLIN_8:
|
CONTROLIN_8:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_8;
|
next_state_tx = CONTROLIN_8;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_CIN;
|
next_state_tx = RESPONSE_CIN;
|
end
|
end
|
end
|
end
|
RX_TX_RESPONSE_CIN:
|
RESPONSE_CIN:
|
begin
|
begin
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_CIN;
|
next_state_tx = RESPONSE_CIN;
|
end
|
end
|
else if(RESPONSE == 1'b0)//ACK
|
else if(RESPONSE == 1'b0)//ACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DELAY_BYTES;
|
next_state_tx = DELAY_BYTES;
|
end
|
end
|
else if(RESPONSE == 1'b1)//NACK
|
else if(RESPONSE == 1'b1)//NACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_NACK;
|
next_state_tx = NACK;
|
end
|
end
|
|
|
end
|
end
|
|
|
//NOW SENDING ADDRESS
|
//NOW SENDING ADDRESS
|
RX_TX_ADRESS_1:
|
ADDRESS_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_1;
|
next_state_tx = ADDRESS_1;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_2;
|
next_state_tx = ADDRESS_2;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_2:
|
ADDRESS_2:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_2;
|
next_state_tx = ADDRESS_2;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_3;
|
next_state_tx = ADDRESS_3;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_3:
|
ADDRESS_3:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_3;
|
next_state_tx = ADDRESS_3;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_4;
|
next_state_tx = ADDRESS_4;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_4:
|
ADDRESS_4:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_4;
|
next_state_tx = ADDRESS_4;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_5;
|
next_state_tx = ADDRESS_5;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_5:
|
ADDRESS_5:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_5;
|
next_state_tx = ADDRESS_5;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_6;
|
next_state_tx = ADDRESS_6;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_6:
|
ADDRESS_6:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_6;
|
next_state_tx = ADDRESS_6;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_7;
|
next_state_tx = ADDRESS_7;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_7:
|
ADDRESS_7:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_7;
|
next_state_tx = ADDRESS_7;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_8;
|
next_state_tx = ADDRESS_8;
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_8:
|
ADDRESS_8:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_8;
|
next_state_tx = ADDRESS_8;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_ADRESS;
|
next_state_tx = RESPONSE_ADDRESS;
|
end
|
end
|
end
|
end
|
RX_TX_RESPONSE_ADRESS:
|
RESPONSE_ADDRESS:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_ADRESS;
|
next_state_tx = RESPONSE_ADDRESS;
|
end
|
end
|
else if(RESPONSE == 1'b0)//ACK
|
else if(RESPONSE == 1'b0)//ACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DELAY_BYTES;
|
next_state_tx = DELAY_BYTES;
|
end
|
end
|
else if(RESPONSE == 1'b1)//NACK --> RESTART CONDITION AND BACK TO START BYTE AGAIN
|
else if(RESPONSE == 1'b1)//NACK --> RESTART CONDITION AND BACK TO START BYTE AGAIN
|
begin
|
begin
|
next_state_tx_rx = RX_TX_NACK;
|
next_state_tx = NACK;
|
end
|
end
|
end
|
end
|
|
|
//data in
|
//data in
|
RX_TX_DATA0_1:
|
DATA0_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_1;
|
next_state_tx = DATA0_1;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_2;
|
next_state_tx = DATA0_2;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_2:
|
DATA0_2:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_2;
|
next_state_tx = DATA0_2;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_3;
|
next_state_tx = DATA0_3;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_3:
|
DATA0_3:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_3;
|
next_state_tx = DATA0_3;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_4;
|
next_state_tx = DATA0_4;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_4:
|
DATA0_4:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_4;
|
next_state_tx = DATA0_4;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_5;
|
next_state_tx = DATA0_5;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_5:
|
DATA0_5:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_5;
|
next_state_tx = DATA0_5;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_6;
|
next_state_tx = DATA0_6;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_6:
|
DATA0_6:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_6;
|
next_state_tx = DATA0_6;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_7;
|
next_state_tx = DATA0_7;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_7:
|
DATA0_7:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_7;
|
next_state_tx = DATA0_7;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_8;
|
next_state_tx = DATA0_8;
|
end
|
end
|
end
|
end
|
RX_TX_DATA0_8:
|
DATA0_8:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_8;
|
next_state_tx = DATA0_8;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_DATA0_1;
|
next_state_tx = RESPONSE_DATA0_1;
|
end
|
end
|
end
|
end
|
RX_TX_RESPONSE_DATA0_1:
|
RESPONSE_DATA0_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_DATA0_1;
|
next_state_tx = RESPONSE_DATA0_1;
|
end
|
end
|
else if(RESPONSE == 1'b0)//ACK
|
else if(RESPONSE == 1'b0)//ACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DELAY_BYTES;
|
next_state_tx = DELAY_BYTES;
|
end
|
end
|
else if(RESPONSE == 1'b1)//NACK
|
else if(RESPONSE == 1'b1)//NACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_NACK;
|
next_state_tx = NACK;
|
end
|
end
|
end
|
end
|
|
|
//second byte
|
//second byte
|
RX_TX_DATA1_1:
|
DATA1_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_1;
|
next_state_tx = DATA1_1;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_2;
|
next_state_tx = DATA1_2;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_2:
|
DATA1_2:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_2;
|
next_state_tx = DATA1_2;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_3;
|
next_state_tx = DATA1_3;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_3:
|
DATA1_3:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_3;
|
next_state_tx = DATA1_3;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_4;
|
next_state_tx = DATA1_4;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_4:
|
DATA1_4:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_4;
|
next_state_tx = DATA1_4;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_5;
|
next_state_tx = DATA1_5;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_5:
|
DATA1_5:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_5;
|
next_state_tx = DATA1_5;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_6;
|
next_state_tx = DATA1_6;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_6:
|
DATA1_6:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_6;
|
next_state_tx = DATA1_6;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_7;
|
next_state_tx = DATA1_7;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_7:
|
DATA1_7:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_7;
|
next_state_tx = DATA1_7;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_8;
|
next_state_tx = DATA1_8;
|
end
|
end
|
end
|
end
|
RX_TX_DATA1_8:
|
DATA1_8:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_8;
|
next_state_tx = DATA1_8;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_DATA1_1;
|
next_state_tx = RESPONSE_DATA1_1;
|
end
|
end
|
end
|
end
|
RX_TX_RESPONSE_DATA1_1:
|
RESPONSE_DATA1_1:
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_RESPONSE_DATA1_1;
|
next_state_tx = RESPONSE_DATA1_1;
|
end
|
end
|
else if(RESPONSE == 1'b0)//ACK
|
else if(RESPONSE == 1'b0)//ACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DELAY_BYTES;
|
next_state_tx = DELAY_BYTES;
|
end
|
end
|
else if(RESPONSE == 1'b1)//NACK
|
else if(RESPONSE == 1'b1)//NACK
|
begin
|
begin
|
next_state_tx_rx = RX_TX_NACK;
|
next_state_tx = NACK;
|
end
|
end
|
end
|
end
|
RX_TX_DELAY_BYTES://THIS FORM WORKS
|
DELAY_BYTES://THIS FORM WORKS
|
begin
|
begin
|
|
|
|
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DELAY_BYTES;
|
next_state_tx = DELAY_BYTES;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
|
|
if(count_tx == 2'd0)
|
if(count_tx == 2'd0)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_1;
|
next_state_tx = ADDRESS_1;
|
end
|
end
|
else if(count_tx == 2'd1)
|
else if(count_tx == 2'd1)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_1;
|
next_state_tx = DATA0_1;
|
end
|
end
|
else if(count_tx == 2'd2)
|
else if(count_tx == 2'd2)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_1;
|
next_state_tx = DATA1_1;
|
end
|
end
|
else if(count_tx == 2'd3)
|
else if(count_tx == 2'd3)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_STOP;
|
next_state_tx = STOP;
|
end
|
end
|
|
|
end
|
end
|
|
|
end
|
end
|
RX_TX_NACK://NOT TESTED YET !!!!
|
NACK://NOT TESTED YET !!!!
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2]*2'd2)
|
if(count_send_data != DATA_CONFIG_REG[13:2]*2'd2)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_NACK;
|
next_state_tx = NACK;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
if(count_tx == 2'd0)
|
if(count_tx == 2'd0)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_CONTROLIN_1;
|
next_state_tx = CONTROLIN_1;
|
end
|
end
|
else if(count_tx == 2'd1)
|
else if(count_tx == 2'd1)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_ADRESS_1;
|
next_state_tx = ADDRESS_1;
|
end
|
end
|
else if(count_tx == 2'd2)
|
else if(count_tx == 2'd2)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA0_1;
|
next_state_tx = DATA0_1;
|
end
|
end
|
else if(count_tx == 2'd3)
|
else if(count_tx == 2'd3)
|
begin
|
begin
|
next_state_tx_rx = RX_TX_DATA1_1;
|
next_state_tx = DATA1_1;
|
end
|
end
|
end
|
end
|
end
|
end
|
RX_TX_STOP://THIS WORK
|
STOP://THIS WORK
|
begin
|
begin
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
if(count_send_data != DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
next_state_tx_rx = RX_TX_STOP;
|
next_state_tx = STOP;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
next_state_tx_rx = RX_TX_IDLE;
|
next_state_tx = IDLE;
|
end
|
end
|
end
|
end
|
default:
|
default:
|
begin
|
begin
|
next_state_tx_rx = RX_TX_IDLE;
|
next_state_tx = IDLE;
|
end
|
end
|
endcase
|
endcase
|
|
|
|
|
end
|
end
|
|
|
|
|
|
|
//SEQUENTIAL TX
|
//SEQUENTIAL
|
always@(posedge PCLK)
|
always@(posedge PCLK)
|
begin
|
begin
|
|
|
//RESET SYNC
|
//RESET SYNC
|
if(!PRESETn)
|
if(!PRESETn)
|
begin
|
begin
|
//SIGNALS MUST BE RESETED
|
//SIGNALS MUST BE RESETED
|
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
state_tx_rx <= RX_TX_IDLE;
|
state_tx <= IDLE;
|
SDA_OUT<= 1'b1;
|
SDA_OUT<= 1'b1;
|
fifo_tx_rd_en <= 1'b0;
|
fifo_tx_rd_en <= 1'b0;
|
count_tx <= 2'd0;
|
count_tx <= 2'd0;
|
BR_CLK_O <= 1'b1;
|
BR_CLK_O <= 1'b1;
|
RESPONSE<= 1'b0;
|
RESPONSE<= 1'b0;
|
end
|
end
|
else
|
else
|
begin
|
begin
|
|
|
// SEQUENTIAL FUN START
|
// SEQUENTIAL FUN START
|
state_tx_rx <= next_state_tx_rx;
|
state_tx <= next_state_tx;
|
|
|
case(state_tx_rx)
|
case(state_tx)
|
RX_TX_IDLE:
|
IDLE:
|
begin
|
begin
|
|
|
fifo_tx_rd_en <= 1'b0;
|
fifo_tx_rd_en <= 1'b0;
|
|
|
|
|
| Line 786... |
Line 796... |
SDA_OUT<= 1'b1;
|
SDA_OUT<= 1'b1;
|
BR_CLK_O <= 1'b1;
|
BR_CLK_O <= 1'b1;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_START:
|
START:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 806... |
Line 816... |
SDA_OUT<=fifo_tx_data_out[0:0];
|
SDA_OUT<=fifo_tx_data_out[0:0];
|
count_tx <= 2'd0;
|
count_tx <= 2'd0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_CONTROLIN_1:
|
CONTROLIN_1:
|
begin
|
begin
|
|
|
|
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
| Line 840... |
Line 850... |
end
|
end
|
|
|
|
|
end
|
end
|
|
|
RX_TX_CONTROLIN_2:
|
CONTROLIN_2:
|
begin
|
begin
|
|
|
|
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
| Line 871... |
Line 881... |
SDA_OUT<=fifo_tx_data_out[2:2];
|
SDA_OUT<=fifo_tx_data_out[2:2];
|
end
|
end
|
|
|
end
|
end
|
|
|
RX_TX_CONTROLIN_3:
|
CONTROLIN_3:
|
begin
|
begin
|
|
|
|
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
| Line 903... |
Line 913... |
end
|
end
|
|
|
|
|
|
|
end
|
end
|
RX_TX_CONTROLIN_4:
|
CONTROLIN_4:
|
begin
|
begin
|
|
|
|
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[3:3];
|
SDA_OUT<=fifo_tx_data_out[3:3];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
end
|
end
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
begin
|
begin
|
| Line 934... |
Line 944... |
SDA_OUT<=fifo_tx_data_out[4:4];
|
SDA_OUT<=fifo_tx_data_out[4:4];
|
end
|
end
|
|
|
end
|
end
|
|
|
RX_TX_CONTROLIN_5:
|
CONTROLIN_5:
|
begin
|
begin
|
|
|
|
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[4:4];
|
SDA_OUT<=fifo_tx_data_out[4:4];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
end
|
end
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
begin
|
begin
|
| Line 966... |
Line 976... |
end
|
end
|
|
|
end
|
end
|
|
|
|
|
RX_TX_CONTROLIN_6:
|
CONTROLIN_6:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 996... |
Line 1006... |
end
|
end
|
|
|
|
|
end
|
end
|
|
|
RX_TX_CONTROLIN_7:
|
CONTROLIN_7:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1025... |
Line 1035... |
SDA_OUT<=fifo_tx_data_out[7:7];
|
SDA_OUT<=fifo_tx_data_out[7:7];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_CONTROLIN_8:
|
CONTROLIN_8:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1054... |
Line 1064... |
SDA_OUT<= 1'b0;
|
SDA_OUT<= 1'b0;
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_RESPONSE_CIN:
|
RESPONSE_CIN:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
|
|
//LETS TRY USE THIS BUT I DONT THINK IF WORKS
|
//LETS TRY USE THIS BUT I DONT THINK IF WORKS
|
RESPONSE<= SDA;
|
RESPONSE<= SDA;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
end
|
end
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
begin
|
begin
|
| Line 1084... |
Line 1094... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_ADRESS_1:
|
ADDRESS_1:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1112... |
Line 1122... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[9:9];
|
SDA_OUT<=fifo_tx_data_out[9:9];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_ADRESS_2:
|
ADDRESS_2:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[9:9];
|
SDA_OUT<=fifo_tx_data_out[9:9];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
end
|
end
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
begin
|
begin
|
| Line 1140... |
Line 1150... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[10:10];
|
SDA_OUT<=fifo_tx_data_out[10:10];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_ADRESS_3:
|
ADDRESS_3:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1168... |
Line 1178... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[11:11];
|
SDA_OUT<=fifo_tx_data_out[11:11];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_ADRESS_4:
|
ADDRESS_4:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1195... |
Line 1205... |
begin
|
begin
|
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[12:12];
|
SDA_OUT<=fifo_tx_data_out[12:12];
|
end
|
end
|
end
|
end
|
RX_TX_ADRESS_5:
|
ADDRESS_5:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_receive_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[12:12];
|
SDA_OUT<=fifo_tx_data_out[12:12];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
| Line 1224... |
Line 1234... |
SDA_OUT<=fifo_tx_data_out[13:13];
|
SDA_OUT<=fifo_tx_data_out[13:13];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_ADRESS_6:
|
ADDRESS_6:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1252... |
Line 1262... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[14:14];
|
SDA_OUT<=fifo_tx_data_out[14:14];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_ADRESS_7:
|
ADDRESS_7:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1281... |
Line 1291... |
SDA_OUT<=fifo_tx_data_out[15:15];
|
SDA_OUT<=fifo_tx_data_out[15:15];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_ADRESS_8:
|
ADDRESS_8:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1309... |
Line 1319... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=1'b0;
|
SDA_OUT<=1'b0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_RESPONSE_ADRESS:
|
RESPONSE_ADDRESS:
|
begin
|
begin
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
|
|
| Line 1337... |
Line 1347... |
begin
|
begin
|
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_1:
|
DATA0_1:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1366... |
Line 1376... |
SDA_OUT<=fifo_tx_data_out[17:17];
|
SDA_OUT<=fifo_tx_data_out[17:17];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_DATA0_2:
|
DATA0_2:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_receive_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[17:17];
|
SDA_OUT<=fifo_tx_data_out[17:17];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
| Line 1395... |
Line 1405... |
SDA_OUT<=fifo_tx_data_out[18:18];
|
SDA_OUT<=fifo_tx_data_out[18:18];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_DATA0_3:
|
DATA0_3:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1423... |
Line 1433... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[19:19];
|
SDA_OUT<=fifo_tx_data_out[19:19];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_4:
|
DATA0_4:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1451... |
Line 1461... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[20:20];
|
SDA_OUT<=fifo_tx_data_out[20:20];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_5:
|
DATA0_5:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1479... |
Line 1489... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[21:21];
|
SDA_OUT<=fifo_tx_data_out[21:21];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_6:
|
DATA0_6:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1507... |
Line 1517... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[22:22];
|
SDA_OUT<=fifo_tx_data_out[22:22];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_7:
|
DATA0_7:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1535... |
Line 1545... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[23:23];
|
SDA_OUT<=fifo_tx_data_out[23:23];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA0_8:
|
DATA0_8:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1564... |
Line 1574... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=1'b0;
|
SDA_OUT<=1'b0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_RESPONSE_DATA0_1:
|
RESPONSE_DATA0_1:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1593... |
Line 1603... |
begin
|
begin
|
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_1:
|
DATA1_1:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1623... |
Line 1633... |
|
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_DATA1_2:
|
DATA1_2:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1651... |
Line 1661... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[26:26];
|
SDA_OUT<=fifo_tx_data_out[26:26];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_3:
|
DATA1_3:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
SDA_OUT<=fifo_tx_data_out[26:26];
|
SDA_OUT<=fifo_tx_data_out[26:26];
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd4)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd4)
|
begin
|
begin
|
BR_CLK_O <= 1'b0;
|
BR_CLK_O <= 1'b0;
|
end
|
end
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
else if(count_send_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_send_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
begin
|
begin
|
| Line 1680... |
Line 1690... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[27:27];
|
SDA_OUT<=fifo_tx_data_out[27:27];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_4:
|
DATA1_4:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1709... |
Line 1719... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[28:28];
|
SDA_OUT<=fifo_tx_data_out[28:28];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_5:
|
DATA1_5:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1738... |
Line 1748... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[29:29];
|
SDA_OUT<=fifo_tx_data_out[29:29];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_6:
|
DATA1_6:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1767... |
Line 1777... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=fifo_tx_data_out[30:30];
|
SDA_OUT<=fifo_tx_data_out[30:30];
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DATA1_7:
|
DATA1_7:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1797... |
Line 1807... |
SDA_OUT<=fifo_tx_data_out[31:31];
|
SDA_OUT<=fifo_tx_data_out[31:31];
|
end
|
end
|
|
|
|
|
end
|
end
|
RX_TX_DATA1_8:
|
DATA1_8:
|
begin
|
begin
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
| Line 1826... |
Line 1836... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
SDA_OUT<=1'b0;
|
SDA_OUT<=1'b0;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_RESPONSE_DATA1_1:
|
RESPONSE_DATA1_1:
|
begin
|
begin
|
//fifo_tx_rd_en <= 1'b1;
|
//fifo_ _rd_en <= 1'b1;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
|
|
| Line 1857... |
Line 1867... |
count_send_data <= 12'd0;
|
count_send_data <= 12'd0;
|
fifo_tx_rd_en <= 1'b1;
|
fifo_tx_rd_en <= 1'b1;
|
end
|
end
|
|
|
end
|
end
|
RX_TX_DELAY_BYTES:
|
DELAY_BYTES:
|
begin
|
begin
|
|
|
fifo_tx_rd_en <= 1'b0;
|
fifo_tx_rd_en <= 1'b0;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
| Line 1899... |
Line 1909... |
|
|
end
|
end
|
|
|
end
|
end
|
//THIS BLOCK MUST BE CHECKED WITH CARE
|
//THIS BLOCK MUST BE CHECKED WITH CARE
|
RX_TX_NACK:// MORE A RESTART
|
NACK:// MORE A RESTART
|
begin
|
begin
|
fifo_tx_rd_en <= 1'b0;
|
fifo_tx_rd_en <= 1'b0;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]*2'd2)
|
if(count_send_data < DATA_CONFIG_REG[13:2]*2'd2)
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_send_data + 12'd1;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd2)
|
if(count_receive_data < DATA_CONFIG_REG[13:2]/12'd2)
|
begin
|
begin
|
SDA_OUT<=1'b0;
|
SDA_OUT<=1'b0;
|
end
|
end
|
else if(count_send_data > DATA_CONFIG_REG[13:2]/12'd2-12'd1 && count_send_data < DATA_CONFIG_REG[13:2])
|
else if(count_send_data > DATA_CONFIG_REG[13:2]/12'd2-12'd1 && count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
| Line 1962... |
Line 1972... |
end
|
end
|
|
|
|
|
end
|
end
|
end
|
end
|
RX_TX_STOP:
|
STOP:
|
begin
|
begin
|
|
|
BR_CLK_O <= 1'b1;
|
BR_CLK_O <= 1'b1;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
if(count_send_data < DATA_CONFIG_REG[13:2])
|
begin
|
begin
|
count_send_data <= count_send_data + 12'd1;
|
count_send_data <= count_receive_data + 12'd1;
|
|
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd2-12'd2)
|
if(count_send_data < DATA_CONFIG_REG[13:2]/12'd2-12'd2)
|
begin
|
begin
|
SDA_OUT<=1'b0;
|
SDA_OUT<=1'b0;
|
end
|
end
|
| Line 1997... |
Line 2007... |
end
|
end
|
|
|
|
|
end
|
end
|
|
|
|
|
|
//STATE CONTROL
|
|
reg [5:0] state_rx;
|
|
reg [5:0] next_state_rx;
|
|
|
|
assign ENABLE_SDA = (state_rx == RESPONSE_CIN||
|
|
state_rx == RESPONSE_ADDRESS||
|
|
state_rx == RESPONSE_DATA0_1||
|
|
state_rx == RESPONSE_DATA1_1)?1'b1:
|
|
(state_tx == RESPONSE_CIN||
|
|
state_tx == RESPONSE_ADDRESS||
|
|
state_tx == RESPONSE_DATA0_1||
|
|
state_tx == RESPONSE_DATA1_1)?1'b0:1'b1;
|
|
|
|
|
|
assign ENABLE_SCL = (state_rx == RESPONSE_CIN||
|
|
state_rx == RESPONSE_ADDRESS||
|
|
state_rx == RESPONSE_DATA0_1||
|
|
state_rx == RESPONSE_DATA1_1)?1'b1:
|
|
(state_tx == RESPONSE_CIN||
|
|
state_tx == RESPONSE_ADDRESS||
|
|
state_tx == RESPONSE_DATA0_1||
|
|
state_tx == RESPONSE_DATA1_1)?1'b1:1'b0;
|
|
|
|
|
|
//COMBINATIONAL BLOCK TO RX
|
|
always@(*)
|
|
begin
|
|
|
|
//THE FUN START HERE :-)
|
|
//COMBINATIONAL UPDATE STATE BE CAREFUL WITH WHAT YOU MAKE HERE
|
|
next_state_rx = state_rx;
|
|
|
|
case(state_rx)//state_rx IS MORE SECURE CHANGE ONLY IF YOU KNOW WHAT ARE YOU DOING
|
|
IDLE:
|
|
begin
|
|
//OBEYING SPEC
|
|
if(DATA_CONFIG_REG[0] == 1'b0 && DATA_CONFIG_REG[1] == 1'b0)
|
|
begin
|
|
next_state_rx = IDLE;
|
|
end
|
|
else if(DATA_CONFIG_REG[0] == 1'b1 && DATA_CONFIG_REG[1] == 1'b1)
|
|
begin
|
|
next_state_rx = IDLE;
|
|
end
|
|
else if(DATA_CONFIG_REG[0] == 1'b0 && DATA_CONFIG_REG[1] == 1'b1 && SDA_OUT_RX == 1'b0 && BR_CLK_O_RX == 1'b0)
|
|
begin
|
|
next_state_rx = START;
|
|
end
|
|
|
|
|
|
end
|
|
START://THIS IS USED TOO ALL STATE MACHINES THE COUNTER_SEND_DATA
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = START;
|
|
end
|
|
else if(fifo_rx_data_in[0] == 1'b0 && fifo_rx_data_in[1] == 1'b0)
|
|
begin
|
|
next_state_rx = CONTROLIN_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = IDLE;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_2;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_2:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_2;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_3;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_3:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_3;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_4;
|
|
end
|
|
end
|
|
CONTROLIN_4:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_4;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_5;
|
|
end
|
|
end
|
|
CONTROLIN_5:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_5;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_6;
|
|
end
|
|
end
|
|
CONTROLIN_6:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_6;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_7;
|
|
end
|
|
end
|
|
CONTROLIN_7:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_7;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = CONTROLIN_8;
|
|
end
|
|
end
|
|
CONTROLIN_8:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = CONTROLIN_8;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = RESPONSE_CIN;
|
|
end
|
|
end
|
|
RESPONSE_CIN:
|
|
begin
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = RESPONSE_CIN;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_1;
|
|
end
|
|
|
|
end
|
|
//NOW SENDING ADDRESS
|
|
ADDRESS_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_2;
|
|
end
|
|
end
|
|
ADDRESS_2:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_2;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_3;
|
|
end
|
|
end
|
|
ADDRESS_3:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_3;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_4;
|
|
end
|
|
end
|
|
ADDRESS_4:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_4;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_5;
|
|
end
|
|
end
|
|
ADDRESS_5:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_5;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_6;
|
|
end
|
|
end
|
|
ADDRESS_6:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_6;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_7;
|
|
end
|
|
end
|
|
ADDRESS_7:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_7;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = ADDRESS_8;
|
|
end
|
|
end
|
|
ADDRESS_8:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = ADDRESS_8;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = RESPONSE_ADDRESS;
|
|
end
|
|
end
|
|
RESPONSE_ADDRESS:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = RESPONSE_ADDRESS;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_1;
|
|
end
|
|
end
|
|
//data in
|
|
DATA0_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_2;
|
|
end
|
|
end
|
|
DATA0_2:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_2;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_3;
|
|
end
|
|
end
|
|
DATA0_3:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_3;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_4;
|
|
end
|
|
end
|
|
DATA0_4:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_4;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_5;
|
|
end
|
|
end
|
|
DATA0_5:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_5;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_6;
|
|
end
|
|
end
|
|
DATA0_6:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_6;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_7;
|
|
end
|
|
end
|
|
DATA0_7:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_7;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA0_8;
|
|
end
|
|
end
|
|
DATA0_8:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA0_8;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = RESPONSE_DATA0_1;
|
|
end
|
|
end
|
|
RESPONSE_DATA0_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = RESPONSE_DATA0_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_1;
|
|
end
|
|
end
|
|
|
|
//second byte
|
|
DATA1_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_2;
|
|
end
|
|
end
|
|
DATA1_2:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_2;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_3;
|
|
end
|
|
end
|
|
DATA1_3:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_3;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_4;
|
|
end
|
|
end
|
|
DATA1_4:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_4;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_5;
|
|
end
|
|
end
|
|
DATA1_5:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_5;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_6;
|
|
end
|
|
end
|
|
DATA1_6:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_6;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_7;
|
|
end
|
|
end
|
|
DATA1_7:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_7;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DATA1_8;
|
|
end
|
|
end
|
|
DATA1_8:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DATA1_8;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = RESPONSE_DATA1_1;
|
|
end
|
|
end
|
|
RESPONSE_DATA1_1:
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = RESPONSE_DATA1_1;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = DELAY_BYTES;
|
|
end
|
|
|
|
end
|
|
DELAY_BYTES://THIS FORM WORKS
|
|
begin
|
|
|
|
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = DELAY_BYTES;
|
|
end
|
|
else
|
|
begin
|
|
|
|
if(count_rx == 2'd0)
|
|
begin
|
|
next_state_rx = ADDRESS_1;
|
|
end
|
|
else if(count_rx == 2'd1)
|
|
begin
|
|
next_state_rx = DATA0_1;
|
|
end
|
|
else if(count_rx == 2'd2)
|
|
begin
|
|
next_state_rx = DATA1_1;
|
|
end
|
|
else if(count_rx == 2'd3)
|
|
begin
|
|
next_state_rx = STOP;
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
STOP://THIS WORK
|
|
begin
|
|
if( count_receive_data != DATA_CONFIG_REG[13:2])
|
|
begin
|
|
next_state_rx = STOP;
|
|
end
|
|
else
|
|
begin
|
|
next_state_rx = IDLE;
|
|
end
|
|
end
|
|
default:
|
|
begin
|
|
next_state_rx = IDLE;
|
|
end
|
|
endcase
|
|
|
|
|
|
end
|
|
|
|
|
|
|
|
//SEQUENTIAL
|
|
always@(posedge PCLK)
|
|
begin
|
|
|
|
//RESET SYNC
|
|
if(!PRESETn)
|
|
begin
|
|
//SIGNALS MUST BE RESETED
|
|
count_receive_data <= 12'd0;
|
|
state_rx <= IDLE;
|
|
SDA_OUT_RX<= 1'b0;
|
|
fifo_rx_wr_en <= 1'b0;
|
|
count_rx <= 2'd0;
|
|
BR_CLK_O_RX <= 1'b0;
|
|
end
|
|
else
|
|
begin
|
|
|
|
// SEQUENTIAL FUN START
|
|
state_rx <= next_state_rx;
|
|
|
|
case(state_rx)
|
|
IDLE:
|
|
begin
|
|
|
|
SDA_OUT_RX<= SDA;
|
|
BR_CLK_O_RX<=SCL;
|
|
|
|
if(((fifo_rx_f_full == 1'b0 && fifo_rx_f_empty == 1'b0) || (fifo_rx_f_full == 1'b0 && fifo_rx_f_empty == 1'b1)) && DATA_CONFIG_REG[1] == 1'b1)
|
|
begin
|
|
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= count_receive_data;
|
|
end
|
|
|
|
end
|
|
START:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if( count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[0]<= SDA;
|
|
fifo_rx_data_in[1]<= SCL;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_1:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[0]<= SDA;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_2:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[1]<= SDA;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_3:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[2]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
CONTROLIN_4:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[3]<= SDA;
|
|
end
|
|
|
|
end
|
|
CONTROLIN_5:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[4]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
CONTROLIN_6:
|
|
begin
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[5]<= SDA;
|
|
end
|
|
end
|
|
|
|
CONTROLIN_7:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[6]<= SDA;
|
|
end
|
|
end
|
|
CONTROLIN_8:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[7]<= SDA;
|
|
end
|
|
|
|
|
|
|
|
end
|
|
RESPONSE_CIN:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
end
|
|
ADDRESS_1:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[8]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
ADDRESS_2:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[9]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
ADDRESS_3:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[10]<= SDA;
|
|
end
|
|
|
|
|
|
|
|
end
|
|
ADDRESS_4:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[11]<= SDA;
|
|
end
|
|
|
|
end
|
|
ADDRESS_5:
|
|
begin
|
|
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[12]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
ADDRESS_6:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[13]<= SDA;
|
|
end
|
|
|
|
end
|
|
ADDRESS_7:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[14]<= SDA;
|
|
end
|
|
|
|
end
|
|
ADDRESS_8:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[15]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
RESPONSE_ADDRESS:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
|
|
end
|
|
DATA0_1:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[16]<= SDA;
|
|
end
|
|
|
|
|
|
|
|
end
|
|
DATA0_2:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[17]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA0_3:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[18]<= SDA;
|
|
end
|
|
|
|
end
|
|
DATA0_4:
|
|
begin
|
|
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[19]<= SDA;
|
|
end
|
|
|
|
end
|
|
DATA0_5:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[20]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA0_6:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[21]<= SDA;
|
|
end
|
|
|
|
end
|
|
DATA0_7:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[22]<= SDA;
|
|
end
|
|
|
|
end
|
|
DATA0_8:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[23]<= SDA;
|
|
end
|
|
|
|
end
|
|
RESPONSE_DATA0_1:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
end
|
|
DATA1_1:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[24]<= SDA;
|
|
end
|
|
|
|
end
|
|
DATA1_2:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[25]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA1_3:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[26]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA1_4:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[27]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA1_5:
|
|
begin
|
|
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[28]<= SDA;
|
|
end
|
|
|
|
|
|
end
|
|
DATA1_6:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[29]<= SDA;
|
|
end
|
|
|
|
|
|
|
|
end
|
|
DATA1_7:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[30]<= SDA;
|
|
end
|
|
|
|
|
|
|
|
end
|
|
DATA1_8:
|
|
begin
|
|
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
|
|
if(SCL == 1'b1 && count_receive_data >= DATA_CONFIG_REG[13:2]/12'd4 && count_receive_data < (DATA_CONFIG_REG[13:2]-(DATA_CONFIG_REG[13:2]/12'd4))-12'd1)
|
|
begin
|
|
fifo_rx_data_in[31]<= SDA;
|
|
end
|
|
|
|
end
|
|
RESPONSE_DATA1_1:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
//fifo_ _rd_en <= 1'b1;
|
|
|
|
end
|
|
DELAY_BYTES:
|
|
begin
|
|
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
fifo_rx_wr_en <= 1'b1;
|
|
end
|
|
|
|
|
|
end
|
|
STOP:
|
|
begin
|
|
if( count_receive_data < DATA_CONFIG_REG[13:2])
|
|
begin
|
|
count_receive_data <= count_receive_data + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_receive_data <= 12'd0;
|
|
end
|
|
fifo_rx_wr_en <= 1'b0;
|
|
end
|
|
default:
|
|
begin
|
|
fifo_rx_wr_en <= 1'b0;
|
|
count_receive_data <= 12'd4095;
|
|
end
|
|
endcase
|
|
|
|
end
|
|
|
|
|
|
end
|
|
|
|
//USED ONLY TO COUNTER TIME
|
|
always@(posedge PCLK)
|
|
begin
|
|
|
|
//RESET SYNC
|
|
if(!PRESETn)
|
|
begin
|
|
count_timeout <= 12'd0;
|
|
end
|
|
else
|
|
begin
|
|
if(count_timeout <= TIMEOUT_TX)
|
|
begin
|
|
if(SDA == 1'b0 && SCL == 1'b0)
|
|
count_timeout <= count_timeout + 12'd1;
|
|
end
|
|
else
|
|
begin
|
|
count_timeout <= 12'd0;
|
|
end
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
endmodule
|
endmodule
|
|
|
|
|
No newline at end of file
|
No newline at end of file
|
