imants/FPGA-camera-inverse-perspective-mapping
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Imants Pulkstenis
2019-07-11 18:01:21 +03:00
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// VHDL code: http://hamsterworks.co.nz/mediawiki/index.php/OV7670_camera
//
// Description: Register settings for the OV7670 Caamera (partially from OV7670.c
// in the Linux Kernel
//
module ov7670_registers(
input clk, //: in STD_LOGIC;
input resend, //: in STD_LOGIC;
input advance, //: in STD_LOGIC;
output [15:0] command, //: out std_logic_vector(15 downto 0);
output finished //: out STD_LOGIC
);
reg [15:0] sreg; // : std_logic_vector(15 downto 0);
reg [8:0] address = 'h0; //: std_logic_vector(7 downto 0) := (others => '0');
reg r_resend_old = 0;
always@(posedge clk) begin
r_resend_old <= resend;
end
always@(posedge clk) begin
if (r_resend_old == 1 && resend == 0 ) begin
address <= 'h0;
end
else if (advance == 1) begin
address <= address + 1;
end
case (address)
// // new settings
// 8'h00 : sreg <= 16'h1280; // COM7 Reset
// 8'h01 : sreg <= 16'h1280; // COM7 Reset
// 8'h02 : sreg <= 16'h1204; // COM7 Size & RGB output
// 8'h03 : sreg <= 16'h1100; // CLKRC Prescaler - Fin/(1+1)
// 8'h04 : sreg <= 16'h0C00; // COM3 Lots of stuff, enable scaling, all others off
// 8'h05 : sreg <= 16'h3E00; // COM14 PCLK scaling off
// 8'h06 : sreg <= 16'h8C00; // RGB444 Set RGB format
// 8'h07 : sreg <= 16'h0400; // COM1 no CCIR601
// 8'h08 : sreg <= 16'h4010; // COM15 Full 0-255 output, RGB 565
// 8'h09 : sreg <= 16'h3a04; // TSLB Set UV ordering, do not auto-reset window
// 8'h0A : sreg <= 16'h1438; // COM9 - AGC Celling
// 8'h0B : sreg <= 16'h4fb3; // MTX1 - colour conversion matrix
// 8'h0C : sreg <= 16'h50b3; // MTX2 - colour conversion matrix
// 8'h0D : sreg <= 16'h5100; // MTX3 - colour conversion matrix
// 8'h0E : sreg <= 16'h523d; // MTX4 - colour conversion matrix
// 8'h0F : sreg <= 16'h53a7; // MTX5 - colour conversion matrix
// 8'h10 : sreg <= 16'h54e4; // MTX6 - colour conversion matrix
// 8'h11 : sreg <= 16'h589e; // MTXS - Matrix sign and auto contrast
// 8'h12 : sreg <= 16'h3dc0; // COM13 - Turn on GAMMA and UV Auto adjust
// 8'h13 : sreg <= 16'h1100; // CLKRC Prescaler - Fin/(1+1)
// 8'h14 : sreg <= 16'h1713; // HSTART HREF start (high 8 bits)
// 8'h15 : sreg <= 16'h1801; // HSTOP HREF stop (high 8 bits)
// 8'h16 : sreg <= 16'h32b6; // HREF Edge offset and low 3 bits of HSTART and HSTOP
// 8'h17 : sreg <= 16'h1902; // VSTART VSYNC start (high 8 bits)
// 8'h18 : sreg <= 16'h1A7a; // VSTOP VSYNC stop (high 8 bits)
// 8'h19 : sreg <= 16'h030a; // VREF VSYNC low two bits
// 8'h1A : sreg <= 16'h0e61; // COM5(0x0E) 0x61
// 8'h1B : sreg <= 16'h0f4b; // COM6(0x0F) 0x4B
// 8'h1C : sreg <= 16'h1602; //
// 8'h1D : sreg <= 16'h1e37; // MVFP (0x1E) 0x07 -- FLIP AND MIRROR IMAGE 0x3x
// 8'h1E : sreg <= 16'h2102;
// 8'h1F : sreg <= 16'h2291;
// 8'h20 : sreg <= 16'h2907;
// 8'h21 : sreg <= 16'h330b;
// 8'h22 : sreg <= 16'h350b;
// 8'h23 : sreg <= 16'h371d;
// 8'h24 : sreg <= 16'h3871;
// 8'h25 : sreg <= 16'h392a;
// 8'h26 : sreg <= 16'h3c78; // COM12 (0x3C) 0x78
// 8'h27 : sreg <= 16'h4d40;
// 8'h28 : sreg <= 16'h4e20;
// 8'h29 : sreg <= 16'h6900; // GFIX (0x69) 0x00
// 8'h2A : sreg <= 16'h6b4a;
// 8'h2B : sreg <= 16'h7410;
// 8'h2C : sreg <= 16'h8d4f;
// 8'h2D : sreg <= 16'h8e00;
// 8'h2E : sreg <= 16'h8f00;
// 8'h2F : sreg <= 16'h9000;
// 8'h30 : sreg <= 16'h9100;
// 8'h31 : sreg <= 16'h9600;
// 8'h32 : sreg <= 16'h9a00;
// 8'h33 : sreg <= 16'hb084;
// 8'h34 : sreg <= 16'hb10c;
// 8'h35 : sreg <= 16'hb20e;
// 8'h36 : sreg <= 16'hb382;
// 8'h37 : sreg <= 16'hb80a;
// // settings added by me
// 8'h38 : sreg <= 16'h13e7; // enable AWB from sw aplication notes
// 8'h39 : sreg <= 16'h6f9f; // Simple White Balance from sw aplication notes
// 8'h40 : sreg <= 16'h411A; // De-noise auto-adjustment + AWB gain enable + Color matrix coefficient double option 0: Original matrix
// 8'h41 : sreg <= 16'h7700; // Register 77 Bit[7:0]:Offset, de-noise range control
// // old settings
8'd00 : sreg <= 16'h1280; // COM7 Reset
8'd01 : sreg <= 16'h1280; // COM7 Reset
8'd02 : sreg <= 16'h1204; // COM7 Size & RGB output
8'd03 : sreg <= 16'h1100; // CLKRC Prescaler - Fin/(1+1)
8'd04 : sreg <= 16'h0C00; // COM3 Lots of stuff, enable scaling, all others off
8'd05 : sreg <= 16'h3E00; // COM14 PCLK scaling off
8'd06 : sreg <= 16'h8C00; // RGB444 Set RGB format
8'd07 : sreg <= 16'h0400; // COM1 no CCIR601
8'd08 : sreg <= 16'h4010; // COM15 Full 0-255 output, RGB 565
8'd09 : sreg <= 16'h3a04; // TSLB Set UV ordering, do not auto-reset window
8'd10 : sreg <= 16'h1438; // COM9 - AGC Celling
8'd11 : sreg <= 16'h4fb3; // MTX1 - colour conversion matrix
8'd12 : sreg <= 16'h50b3; // MTX2 - colour conversion matrix
8'd13 : sreg <= 16'h5100; // MTX3 - colour conversion matrix
8'd14 : sreg <= 16'h523d; // MTX4 - colour conversion matrix
8'd15 : sreg <= 16'h53a7; // MTX5 - colour conversion matrix
8'd16 : sreg <= 16'h54e4; // MTX6 - colour conversion matrix
8'd17 : sreg <= 16'h581e; // 16'h589e; // MTXS - Matrix sign and auto contrast
8'd18 : sreg <= 16'h3dc0; // COM13 - Turn on GAMMA and UV Auto adjust
8'd19 : sreg <= 16'h1713; // HSTART HREF start (high 8 bits)
8'd20 : sreg <= 16'h1801; // HSTOP HREF stop (high 8 bits)
8'd21 : sreg <= 16'h32b6; // HREF Edge offset and low 3 bits of HSTART and HSTOP
8'd22 : sreg <= 16'h1902; // VSTART VSYNC start (high 8 bits)
8'd23 : sreg <= 16'h1A7a; // VSTOP VSYNC stop (high 8 bits)
8'd24 : sreg <= 16'h030a; // VREF VSYNC low two bits
//
// 8'd26 : sreg <= 16'h0e61; // COM5(0x0E) 0x61
// 8'd27 : sreg <= 16'h0f4b; // COM6(0x0F) 0x4B
// 8'd28 : sreg <= 16'h1602; //
// 8'd29 : sreg <= 16'h1e37; // MVFP (0x1E) 0x07 // FLIP AND MIRROR IMAGE 0x3x
// 8'd30 : sreg <= 16'h2102;
// 8'd31 : sreg <= 16'h2291;
// 8'd32 : sreg <= 16'h2907;
// 8'd33 : sreg <= 16'h330b;
// 8'd34 : sreg <= 16'h350b;
// 8'd35 : sreg <= 16'h371d;
// 8'd36 : sreg <= 16'h3871;
// 8'd37 : sreg <= 16'h392a;
// 8'd26 : sreg <= 16'h3c78;
//
// 8'd38 : sreg <= 16'h3c78; // COM12 (0x3C) 0x78
// 8'd39 : sreg <= 16'h4d40;
// 8'd40 : sreg <= 16'h4e20;
// 8'd41 : sreg <= 16'h6900; // GFIX (0x69) 0x00
// 8'd42 : sreg <= 16'h6b4a;
// 8'd43 : sreg <= 16'h7410;
// 8'd44 : sreg <= 16'h8d4f;
// 8'd45 : sreg <= 16'h8e00;
// 8'd26 : sreg <= 16'h8f00;
// 8'd27 : sreg <= 16'h9000;
//
8'd25 : sreg <= 16'h9100;
8'd26 : sreg <= 16'h9600;
8'd27 : sreg <= 16'h9a00;
8'd28 : sreg <= 16'hb084;
8'd29 : sreg <= 16'hb10c;
8'd30 : sreg <= 16'hb20e;
8'd31 : sreg <= 16'hb382;
8'd32 : sreg <= 16'hb80a;
// setings form fpga4students
// 8'd00 : sreg <= 16'h1280; // COM7 Reset
// 8'd01 : sreg <= 16'h1280; // COM7 Reset
// 8'd02 : sreg <= 16'h1206; // COM7 Size & RGB output
// // 8'd03 : sreg <= 16'h1100; // CLKRC Prescaler - Fin/(1+1)
// // 8'd04 : sreg <= 16'h0C00; // COM3 Lots of stuff, enable scaling, all others off
// // 8'h05 : sreg <= 16'h3E00; // COM14 PCLK scaling off
// 8'd06 : sreg <= 16'h8C00; // RGB444 Set RGB format
// // 8'd07 : sreg <= 16'h0400; // COM1 no CCIR601
// // 8'd08 : sreg <= 16'h4010; // COM15 Full 0-255 output, RGB 565
// // 8'd09 : sreg <= 16'h3a04; // TSLB Set UV ordering, do not auto-reset window
// // 8'd10 : sreg <= 16'h1438; // COM9 - AGC Celling
// // // 8'h0B : sreg <= 16'h4fb3; // MTX1 - colour conversion matrix
// // // 8'h0C : sreg <= 16'h50b3; // MTX2 - colour conversion matrix
// // // 8'd11 : sreg <= 16'h5100; // MTX3 - colour conversion matrix
// // // 8'd11 : sreg <= 16'h523d; // MTX4 - colour conversion matrix
// // // 8'h0F : sreg <= 16'h53a7; // MTX5 - colour conversion matrix
// // // 8'h10 : sreg <= 16'h54e4; // MTX6 - colour conversion matrix
// // // 8'd11 : sreg <= 16'h589e; // MTXS - Matrix sign and auto contrast
// // 8'd11 : sreg <= 16'h3dc0; // COM13 - Turn on GAMMA and UV Auto adjust
// // 8'd12 : sreg <= 16'h1100; // CLKRC Prescaler - Fin/(1+1)
// 8'd13 : sreg <= 16'h1713; // HSTART HREF start (high 8 bits)
// 8'd14 : sreg <= 16'h1801; // HSTOP HREF stop (high 8 bits)
// 8'd15 : sreg <= 16'h32b6; // HREF Edge offset and low 3 bits of HSTART and HSTOP
// 8'd16 : sreg <= 16'h1902; // VSTART VSYNC start (high 8 bits)
// 8'd17 : sreg <= 16'h1A7a; // VSTOP VSYNC stop (high 8 bits)
// 8'd18 : sreg <= 16'h030a; // VREF VSYNC low two bits
// // 8'h1A : sreg <= 16'h0e61; // COM5(0x0E) 0x61
// // 8'h1B : sreg <= 16'h0f4b; // COM6(0x0F) 0x4B
// // 8'h1C : sreg <= 16'h1602; //
// // 8'h1D : sreg <= 16'h1e37; // MVFP (0x1E) 0x07 // FLIP AND MIRROR IMAGE 0x3x
// // 8'h1E : sreg <= 16'h2102;
// // 8'h1F : sreg <= 16'h2291;
// // 8'h20 : sreg <= 16'h2907;
// // 8'h21 : sreg <= 16'h330b;
// // 8'h22 : sreg <= 16'h350b;
// // 8'h23 : sreg <= 16'h371d;
// // 8'h24 : sreg <= 16'h3871;
// // 8'h25 : sreg <= 16'h392a;
// // 8'h26 : sreg <= 16'h3c78; // COM12 (0x3C) 0x78
// // 8'h27 : sreg <= 16'h4d40;
// // 8'h28 : sreg <= 16'h4e20;
// // 8'h29 : sreg <= 16'h6900; // GFIX (0x69) 0x00
// // 8'h2A : sreg <= 16'h6b4a;
// // 8'h2B : sreg <= 16'h7410;
// // 8'h2C : sreg <= 16'h8d4f;
// // 8'h2D : sreg <= 16'h8e00;
// // 8'h2E : sreg <= 16'h8f00;
// // 8'h2F : sreg <= 16'h9000;
// // 8'h30 : sreg <= 16'h9100;
// // 8'h31 : sreg <= 16'h9600;
// // 8'h32 : sreg <= 16'h9a00;
// // 8'h33 : sreg <= 16'hb084;
// // 8'h34 : sreg <= 16'hb10c;
// // 8'h35 : sreg <= 16'hb20e;
// // 8'h36 : sreg <= 16'hb382;
// // 8'h37 : sreg <= 16'hb80a;
// // settings added by me
// 8'd19 : sreg <= 16'h13e7; // enable AWB from sw aplication notes
// 8'd20 : sreg <= 16'h6f9f; // Simple White Balance from sw aplication notes
// 8'd21 : sreg <= 16'h411A; // De-noise auto-adjustment + AWB gain enable + Color matrix coefficient double option 0: Original matrix
// 8'd22 : sreg <= 16'h7700; // Register 77 Bit[7:0]:Offset, de-noise range control
// // Saturation + 2
// // i2c_salve_Address = 0x42;
// // write_i2c(0x4f, 0xc0);
// // write_i2c(0x50, 0xc0);
// // write_i2c(0x51, 0x00);
// // write_i2c(0x52, 0x33);
// // write_i2c(0x53, 0x8d);
// // write_i2c(0x54, 0xc0);
// // write_i2c(0x58, 0x9e);
// 8'd23 : sreg <= 16'h4fb3; // MTX1 - colour conversion matrix
// 8'd24 : sreg <= 16'h50b3; // MTX2 - colour conversion matrix
// 8'd25 : sreg <= 16'h5100; // MTX3 - colour conversion matrix
// 8'd26 : sreg <= 16'h523d; // MTX4 - colour conversion matrix
// 8'd27 : sreg <= 16'h53a7; // MTX5 - colour conversion matrix
// 8'd28 : sreg <= 16'h54e4; // MTX6 - colour conversion matrix
// 8'd29 : sreg <= 16'h589e; // MTXS - Matrix sign and auto contrast
// // setings from : http://hamsterworks.co.nz/mediawiki/index.php/OV7670_camera
// 8'h00 : sreg <= 16'h1280; //COM7 Reset
// 8'h01 : sreg <= 16'h1280; //COM7 Reset
// 8'h02 : sreg <= 16'h1100; //CLKRC Prescaler - Fin/(1+1)
// 8'h03 : sreg <= 16'h1204; //COM7 QIF + RGB output
// 8'h04 : sreg <= 16'h0C04; //COM3 Lots of stuff, enable scaling, all others off
// 8'h05 : sreg <= 16'h3E19; //COM14 PCLK scaling = 0
// 8'h06 : sreg <= 16'h4010; //COM15 Full 0-255 output, RGB 565
// 8'h07 : sreg <= 16'h3a04; //TSLB Set UV ordering, do not auto-reset window
// 8'h08 : sreg <= 16'h8C00; //RGB444 Set RGB format
// 8'h09 : sreg <= 16'h1714; //HSTART HREF start (high 8 bits)
// 8'h0a : sreg <= 16'h1802; //HSTOP HREF stop (high 8 bits)
// 8'h0b : sreg <= 16'h32A4; //HREF Edge offset and low 3 bits of HSTART and HSTOP
// 8'h0c : sreg <= 16'h1903; //VSTART VSYNC start (high 8 bits)
// 8'h0d : sreg <= 16'h1A7b; //VSTOP VSYNC stop (high 8 bits)
// 8'h0e : sreg <= 16'h030a; //VREF VSYNC low two bits
// 8'h0f : sreg <= 16'h703a; //SCALING_XSC
// 8'h10 : sreg <= 16'h7135; //SCALING_YSC
// 8'h11 : sreg <= 16'h7211; //SCALING_DCWCTR
// 8'h12 : sreg <= 16'h73f1; //SCALING_PCLK_DIV
// 8'h13 : sreg <= 16'ha202; //SCALING_PCLK_DELAY PCLK scaling = 4, must match COM14
default : sreg <= 16'hffff;
endcase;
end
assign command = sreg;
assign finished = (sreg == 16'hffff) ? 1'b1 : 1'b0;
endmodule