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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 534 | lvd | 1 | // prints data output through SDcard spi iface |
| 2 | // |
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| 3 | |||
| 4 | `ifdef SPITEST |
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| 5 | module spitest_print( |
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| 6 | |||
| 7 | input wire sdclk, |
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| 8 | input wire sdcs_n, |
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| 9 | input wire sddo, |
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| 10 | output wire sddi |
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| 11 | ); |
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| 12 | |||
| 13 | |||
| 14 | assign sddi = 1'b1; |
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| 15 | |||
| 16 | |||
| 17 | |||
| 18 | |||
| 19 | reg [7:0] txt_buffer [0:255]; |
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| 20 | |||
| 21 | reg [7:0] shift_in; |
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| 22 | |||
| 23 | integer counter; |
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| 24 | integer pointer; |
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| 25 | integer i; |
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| 26 | |||
| 27 | |||
| 28 | initial |
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| 29 | begin |
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| 30 | counter = 0; |
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| 31 | pointer = 0; |
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| 32 | end |
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| 33 | |||
| 34 | |||
| 35 | |||
| 36 | always @(posedge sdclk) |
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| 37 | if( !sdcs_n ) |
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| 38 | begin |
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| 39 | shift_in = { shift_in[6:0], sddo }; |
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| 40 | |||
| 41 | counter = counter + 1; |
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| 42 | |||
| 43 | if( counter >= 8 ) |
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| 44 | begin |
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| 45 | counter = 0; |
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| 46 | |||
| 47 | txt_buffer[pointer] = shift_in; |
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| 48 | pointer = pointer + 1; |
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| 49 | |||
| 50 | if( shift_in == 8'd10 ) |
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| 51 | begin |
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| 52 | $write("received string: <"); |
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| 53 | |||
| 54 | for(i=0;i<(pointer-1);i=i+1) |
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| 55 | $write("%s",txt_buffer[i]); |
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| 56 | |||
| 57 | $display(">"); |
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| 58 | |||
| 59 | pointer = 0; |
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| 60 | end |
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| 61 | end |
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| 62 | |||
| 63 | end |
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| 64 | |||
| 65 | |||
| 66 | |||
| 67 | |||
| 68 | |||
| 69 | endmodule |
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| 70 | `endif |
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| 71 |