estif
New Contributor
New ContributorVGA interface with cyclone v de1_soc 5CEM5
i have this code that will take a hex file and display it through VGA but i want to change the code to use instead of hex to image ppm format how can i achieve that ? here is the code:
module vgaaaa( CLOCK_50, VGA_CLK, VGA_HS, VGA_VS, VGA_BLANK_N, VGA_SYNC_N, VGA_R, VGA_G, VGA_B
);
input CLOCK_50; // 50 MHz
output VGA_CLK; // VGA Clock
output VGA_HS; // VGA H_SYNC
output VGA_VS; // VGA V_SYNC
output VGA_BLANK_N; // VGA BLANK
output VGA_SYNC_N; // VGA SYNC
output [7:0] VGA_R; // VGA Red[9:0]
output [7:0] VGA_G; // VGA Green[9:0]
output [7:0] VGA_B; // VGA Blue[9:0]
reg vga_clock=0;
wire [9:0] x;
wire [9:0] y;
always@(posedge CLOCK_50)begin
vga_clock<=~vga_clock;
end
vga_controller vga_controller_inst(
.CLOCK_50(CLOCK_50),
.vga_clock(vga_clock),
.x(x),
.y(y),
.VGA_R(VGA_R),
.VGA_G(VGA_G),
.VGA_B(VGA_B),
.VGA_HS(VGA_HS),
.VGA_VS(VGA_VS),
.VGA_BLANK(VGA_BLANK_N),
.VGA_SYNC(VGA_SYNC_N),
.VGA_CLK(VGA_CLK)
);
endmodule
module vga_controller( CLOCK_50, vga_clock, x, y, VGA_R, VGA_G, VGA_B, VGA_HS, VGA_VS, VGA_BLANK,
VGA_SYNC, VGA_CLK);
parameter C_VERT_NUM_PIXELS = 10'd480;
parameter C_VERT_SYNC_START = 10'd493;
parameter C_VERT_SYNC_END = 10'd494; //(C_VERT_SYNC_START + 2 - 1);
parameter C_VERT_TOTAL_COUNT = 10'd525;
parameter C_HORZ_NUM_PIXELS = 10'd640;
parameter C_HORZ_SYNC_START = 10'd659;
parameter C_HORZ_SYNC_END = 10'd754; //(C_HORZ_SYNC_START + 96 - 1);
parameter C_HORZ_TOTAL_COUNT = 10'd800;
input CLOCK_50;
input vga_clock;
output [9:0] x;
output [9:0] y;
output reg[7:0] VGA_R;
output reg[7:0] VGA_G;
output reg[7:0] VGA_B;
output reg VGA_HS;
output reg VGA_VS;
output reg VGA_BLANK;
output VGA_SYNC;
output VGA_CLK;
reg VGA_HS1;
reg VGA_VS1;
reg VGA_BLANK1;
reg [9:0] xCounter=0;
reg [9:0] yCounter=0;
wire xCounter_clear;
wire yCounter_clear;
always @(posedge vga_clock)
begin
if (xCounter_clear)
xCounter <= 10'd0;
else
begin
xCounter <= xCounter + 1'b1;
end
end
assign xCounter_clear = (xCounter == (C_HORZ_TOTAL_COUNT-1));
always @(posedge vga_clock)
begin
if (xCounter_clear && yCounter_clear)
yCounter <= 10'd0;
else if (xCounter_clear) //Increment when x counter resets
yCounter <= yCounter + 1'b1;
end
assign yCounter_clear = (yCounter == (C_VERT_TOTAL_COUNT-1));
assign x = xCounter;
assign y = yCounter;
always @(posedge vga_clock)
begin
VGA_HS1 <= ~((xCounter >= C_HORZ_SYNC_START) && (xCounter <= C_HORZ_SYNC_END));
VGA_VS1 <= ~((yCounter >= C_VERT_SYNC_START) && (yCounter <= C_VERT_SYNC_END));
VGA_BLANK1 <= ((xCounter < C_HORZ_NUM_PIXELS) && (yCounter < C_VERT_NUM_PIXELS));
//DELAY//
VGA_HS <= VGA_HS1;
VGA_VS <= VGA_VS1;
VGA_BLANK <= VGA_BLANK1;
end
/* VGA sync should be 1 at all times. */
assign VGA_SYNC = 1'b1;
/* Generate the VGA clock signal. */
assign VGA_CLK = vga_clock;
reg [7:0] rom[0:80000];
reg signed [10:0]X = 10'd400;
reg signed [10:0]Y = 10'd300;
wire [16:0] FUNC;
assign FUNC = y*240+x;
reg [7:0] Q1
initial
begin
$readmemh("image.hex", rom);
end
always @ (posedge CLOCK_50)
begin
Q1<=rom[FUNC]
end
always @ (posedge CLOCK_50)
begin
if ( x<240 && y<320)
begin
VGA_R<= Q1;
VGA_G<= Q1;
VGA_B<= Q1;
end
end
endmodule
I really appreciate your support
