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dinesha |
/**********************************************************
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I2C Master Test
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**********************************************************/
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task i2cm_test1;
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reg [7:0] rdata;
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begin
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$display("############################################");
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$display(" Testing I2CM Read/Write Access ");
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$display("############################################");
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@(posedge app_clk);
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$display("---------- Initialize I2C Master ----------");
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//Wrire Prescale registers
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h0,8'hC7);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h1,8'h00);
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// Core Enable
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h2,8'h80);
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// Writing Data
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$display("---------- Writing Data ----------");
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h20); // Slave Addr + WR
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h90);
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h66);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h10);
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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/* Byte1: 12 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h12);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h10); // No Stop + Write
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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/* Byte1: 34 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h34);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h10); // No Stop + Write
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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/* Byte1: 56 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h56);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h10); // No Stop + Write
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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/* Byte1: 78 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h78);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h50); // Stop + Write
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Reading Data
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//Wrire Address
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$display("---------- Writing Data ----------");
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h20);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h90);
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h66);
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h50);
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Generate Read
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$display("---------- Writing Data ----------");
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h3,8'h21); // Slave Addr + RD
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h90);
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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/* BYTE-1 : 0x12 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h20); // RD + ACK
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Compare received data
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tb_top.cpu_byte_read_cmp(`ADDR_SPACE_I2CM,8'h3,8'h12);
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/* BYTE-2 : 0x34 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h20); // RD + ACK
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Compare received data
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tb_top.cpu_byte_read_cmp(`ADDR_SPACE_I2CM,8'h3,8'h34);
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/* BYTE-3 : 0x56 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h20); // RD + ACK
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Compare received data
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tb_top.cpu_byte_read_cmp(`ADDR_SPACE_I2CM,8'h3,8'h56);
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/* BYTE-4 : 0x78 */
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tb_top.cpu_byte_write(`ADDR_SPACE_I2CM,8'h4,8'h68); // STOP + RD + NACK
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rdata [1] = 1'b1;
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while(rdata[1]==1)
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tb_top.cpu_byte_read(`ADDR_SPACE_I2CM,8'h4,rdata);
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//Compare received data
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tb_top.cpu_byte_read_cmp(`ADDR_SPACE_I2CM,8'h3,8'h78);
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repeat(100)@(posedge app_clk);
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end
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endtask //}
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