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[/] [turbo8051/] [trunk/] [verif/] [agents/] [spi/] [spi_tasks.v] - Blame information for rev 56

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Line No. Rev Author Line
1 15 dinesha 
 
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// #################################################################
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// Module: spi tasks
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//
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// Description : All ST and ATMEL commands are made into tasks
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// #################################################################
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8 
event      spi_error_detected;
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reg  [1:0] spi_chip_no;
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11 
integer spi_err_cnt;
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13 
task spi_init;
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begin
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   spi_err_cnt = 0;
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   spi_chip_no = 0;
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end
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endtask
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20 
 
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always @spi_error_detected
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begin
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  `TB_GLBL.test_err;
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        spi_err_cnt = spi_err_cnt + 1;
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end
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27 
// Write One Byte
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task spi_write_byte;
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    input [7:0] datain;
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    reg  [31:0] read_data;
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    begin
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      @(posedge tb_top.app_clk)
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      tb_top.cpu_write('h2,'h4,{datain,24'h0});
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      tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
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                                spi_chip_no[1:0],
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                                2'b0,    // Write Operatopm
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                                2'b0,    // Single Transfer
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                                6'h10,    // sck clock period
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                                5'h2,    // cs setup/hold period
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                                8'h40 }); // cs bit information
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     tb_top.cpu_read('h2,'h0,read_data);
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     while(read_data[31]) begin
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        @(posedge tb_top.app_clk) ;
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        tb_top.cpu_read('h2,'h0,read_data);
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      end
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    end
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endtask
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//***** ST : Write Enable task ******//
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task spi_write_dword;
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    input [31:0] cmd;
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    input [7:0]  cs_byte;
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    reg   [31:0] read_data;
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    begin
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      @(posedge tb_top.app_clk)
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      tb_top.cpu_write('h2,'h4,{cmd});
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      tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
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                                spi_chip_no[1:0],
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                                2'b0,    // Write Operatopm
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                                2'h3,    // 4 Transfer
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                                6'h10,    // sck clock period
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                                5'h2,    // cs setup/hold period
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                                cs_byte[7:0] }); // cs bit information
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     tb_top.cpu_read('h2,'h0,read_data);
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     while(read_data[31]) begin
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        @(posedge tb_top.app_clk) ;
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        tb_top.cpu_read('h2,'h0,read_data);
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      end
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    end
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endtask
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75 
 
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//***** ST : Write Enable task ******//
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task spi_read_dword;
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    output [31:0] dataout;
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    input  [7:0]  cs_byte;
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    reg    [31:0] read_data;
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    begin
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      @(posedge tb_top.app_clk)
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      tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
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                                spi_chip_no[1:0],
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                                2'b1,    // Read Operatopm
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                                2'h3,    // 4 Transfer
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                                6'h10,    // sck clock period
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                                5'h2,    // cs setup/hold period
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                                cs_byte[7:0] }); // cs bit information
91 
 
92 
     tb_top.cpu_read('h2,'h0,read_data);
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94 
     while(read_data[31]) begin
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        @(posedge tb_top.app_clk) ;
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        tb_top.cpu_read('h2,'h0,read_data);
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     end
98 
 
99 
     tb_top.cpu_read('h2,'h8,dataout);
100 
 
101 
    end
102 
endtask
103 
 
104 
 
105 
 
106 
task spi_sector_errase;
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    input [23:0] address;
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    reg   [31:0] read_data;
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    begin
110 
 
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      @(posedge tb_top.app_clk) ;
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      tb_top.cpu_write('h2,'h4,{8'hD8,address[23:0]});
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      tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
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                                spi_chip_no[1:0],
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                                2'b0,    // Write Operatopm
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                                2'h3,    // 4 Transfer
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                                6'h10,    // sck clock period
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                                5'h2,    // cs setup/hold period
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                                8'h1 }); // cs bit information
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121 
     tb_top.cpu_read('h2,'h0,read_data);
122 
 
123 
      $display("%t : %m : Sending Sector Errase for Address : %x",$time,address);
124 
 
125 
 
126 
     tb_top.cpu_read('h2,'h0,read_data);
127 
     while(read_data[31]) begin
128 
        @(posedge tb_top.app_clk) ;
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        tb_top.cpu_read('h2,'h0,read_data);
130 
     end
131 
   end
132 
endtask
133 
 
134 
 
135 
task spi_page_write;
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    input [23:0] address;
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    reg [7:0] i;
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    reg [31:0] write_data;
139 
    begin
140 
 
141 
      spi_write_dword({8'h02,address[23:0]},8'h0);
142 
 
143 
      for(i = 0; i < 252 ; i = i + 4) begin
144 
         write_data [31:24]  = i;
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         write_data [23:16]  = i+1;
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         write_data [15:8]   = i+2;
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         write_data [7:0]    = i+3;
148 
         spi_write_dword(write_data,8'h0);
149 
         $display("%m : Writing Data : %x",write_data);
150 
      end
151 
 
152 
      // Writting last 4 byte with de-selecting the chip select
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         write_data [31:24]  = i;
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         write_data [23:16]  = i+1;
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         write_data [15:8]   = i+2;
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         write_data [7:0]    = i+3;
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      spi_write_dword(write_data,8'h1);
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      $display("%m : Writing Data : %x",write_data);
159 
 
160 
    end
161 
endtask
162 
 
163 
 
164 
task spi_page_read_verify;
165 
    input [23:0] address;
166 
    reg   [31:0] read_data;
167 
    reg [7:0] i;
168 
    reg [31:0] exp_data;
169 
    begin
170 
 
171 
      spi_write_dword({8'h03,address[23:0]},8'h0);
172 
 
173 
      for(i = 0; i < 252 ; i = i + 4) begin
174 
         exp_data [31:24]  = i;
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         exp_data [23:16]  = i+1;
176 
         exp_data [15:8]   = i+2;
177 
         exp_data [7:0]    = i+3;
178 
         spi_read_dword(read_data,8'h0);
179 
         if(read_data != exp_data) begin
180 
            -> spi_error_detected;
181 
            $display("%m : ERROR : Exp Data : %x Rxd Data : %x",exp_data,read_data);
182 
         end else begin
183 
            $display("%m : STATUS :  Data Matched : %x ",read_data);
184 
         end
185 
 
186 
      end
187 
 
188 
      // Reading last 4 byte with de-selecting the chip select
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         exp_data [31:24]  = i;
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         exp_data [23:16]  = i+1;
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         exp_data [15:8]   = i+2;
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         exp_data [7:0]    = i+3;
193 
 
194 
         spi_read_dword(read_data,8'h0);
195 
         if(read_data != exp_data) begin
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            -> spi_error_detected;
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            $display("%m : ERROR : Exp Data : %x Rxd Data : %x",exp_data,read_data);
198 
         end else begin
199 
            $display("%m : STATUS :  Data Matched : %x ",read_data);
200 
         end
201 
 
202 
    end
203 
endtask
204 
 
205 
 
206 
 
207 
 
208 
task spi_op_over;
209 
    reg [31:0] read_data;
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    begin
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     tb_top.cpu_read('h2,'h0,read_data);
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      while(read_data[31]) begin
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        @(posedge tb_top.app_clk) ;
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        tb_top.cpu_read('h2,'h0,read_data);
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      end
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      #100;
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    end
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endtask
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220 
task spi_wait_busy;
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    reg [31:0] read_data = 1;
222 
    bit        exit_flag;
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    integer    pretime;
224 
    begin
225 
 
226 
    pretime = $time;
227 
 
228 
 
229 
  exit_flag = 1;
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   while(exit_flag == 1) begin
231 
 
232 
    tb_top.cpu_write('h2,'h4,{8'h05,24'h0});
233 
    tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
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                                spi_chip_no[1:0],
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                                2'b0,    // Write Operation
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                                2'b0,    // 1 Transfer
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                                6'h10,    // sck clock period
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                                5'h2,    // cs setup/hold period
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                                8'h0 }); // cs bit information
240 
 
241 
 
242 
        tb_top.cpu_read('h2,'h0,read_data);
243 
        while(read_data[31]) begin
244 
          @(posedge tb_top.app_clk) ;
245 
          tb_top.cpu_read('h2,'h0,read_data);
246 
        end
247 
 
248 
     // Send Status Request Cmd
249 
 
250 
 
251 
      tb_top.cpu_write('h2,'h0,{1'b1,6'h0,
252 
                                spi_chip_no[1:0],
253 
                                2'b1,    // Read Operation
254 
                                2'b0,    // 1 Transfer
255 
                                6'h10,    // sck clock period
256 
                                5'h2,    // cs setup/hold period
257 
                                8'h40 }); // cs bit information
258 
 
259 
 
260 
        tb_top.cpu_read('h2,'h0,read_data);
261 
        while(read_data[31]) begin
262 
          @(posedge tb_top.app_clk) ;
263 
          tb_top.cpu_read('h2,'h0,read_data);
264 
        end
265 
 
266 
        tb_top.cpu_read('h2,'h8,read_data);
267 
        exit_flag = read_data[24];
268 
        $display("Total time Elapsed: %0t(us): %m : Checking the SPI RDStatus : %x",($time - pretime)/1000000 ,read_data);
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      repeat (1000) @ (posedge tb_top.app_clk) ;
270 
     end
271 
  end
272 
endtask
273 
 
274 
 
275 
 
276 
task spi_tb_status;
277 
begin
278 
 
279 
   $display("#############################");
280 
   $display("   Test Statistic            ");
281 
   if(spi_err_cnt >0) begin
282 
      $display("TEST STATUS : FAILED ");
283 
      $display("TOTAL ERROR COUNT : %d ",spi_err_cnt);
284 
   end else begin
285 
      $display("TEST STATUS : PASSED ");
286 
   end
287 
   $display("#############################");
288 
end
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endtask
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