not good nuf
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@@ -1,19 +1,51 @@
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module top (
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input wire clk_25mhz,
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output wire spi_clk,
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output wire spi_mosi,
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input wire spi_miso,
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output wire spi_cs
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);
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reg[7:0] miso;
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reg[7:0] mosi = 8'b01101011;
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spi_master spimaster0(
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.clk_25mhz(clk_25mhz),
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.spi_clk(spi_clk),
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.data_in(mosi),
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.spi_miso(spi_miso),
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.data_out(mosi),
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.spi_mosi(spi_mosi),
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.spi_cs(spi_cs)
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);
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endmodule
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module spi_master (
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input wire clk_25mhz,
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output reg spi_clk = 0,
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output reg spi_mosi = 0,
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input reg spi_miso = 0,
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output reg[7:0] data_in,
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output reg spi_miso = 0,
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input reg[7:0] data_out,
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input reg spi_mosi = 0,
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output wire spi_cs
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);
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assign spi_cs = 0; // Always selected (for test)
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reg [7:0] mosi_shift = 8'b01101011; // Example byte
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reg [3:0] bit_counter = 0;
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reg spi_clk_en = 0;
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reg spi_clk_en = 1;
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localparam TRANSFERRING = 0, IDLE = 1;
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wire spi_state = IDLE;
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always_ff @(posedge clk_25mhz) begin
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spi_clk <= ~spi_clk;
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@@ -27,3 +59,4 @@ always_ff @(posedge clk_25mhz) begin
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end
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endmodule
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