vga to vga scaler

[Email protected] (posedge CLK or negedge rst_n) Begin If (~ Rst_n) De Else if (vcnt De Else if (hcnt> = h_front + hsync_l + H_BACK-1) (hcnt De Else De End [Email protected] (posedge CLK or negedge rst_n) Begin If (~ Rst_n) Data_req Else if (vcnt Data_req Else if (hcnt> = h_front + hsync_l + H_BACK-OUTPUT_REG-2) (hcnt Data_req Else data_req End [Email protected] (posedge CLK or negedge rst_n) Begin If (~ Rst_n) Rout Else Rout End [Email protected] (posedge CLK or negedge rst_n)

ready; Reg [10: 0] x_count;Always @ (posedge CLK or negedge reset)BeginIf (! Reset)X_count Else if (x_count = 11 'd1040)X_count ElseX_count EndReg [10: 0] y_count;Always @ (posedge CLK or negedge reset)BeginIf (! Reset)Y_count Else if (y_count = 11 'd666)Y_count Else if (x_count = 1040)Y_count EndAssign ready = (x_count> 183 x_count Assign x_addr = (ready )? X_count-183: 6 'd0;Assign y_addr = (ready )? Y_count-28: 6 'd0;Assign hsync = (x_count> 119 )? 1 'd1: 1' D0;Assign vsync = (y_count> 5 )

we useths8136VGAThe encoder is connected to the Imx6qDisp0_dat0~dat23. When resolution Less than or equal to 720p , image good quality however , If the solution is greater than 720p , pixels will run on 100MHz of The clock. We only need to modify NBSP;IPU_DISP.C as follows: uint32_t rounded_pixel_clk_upper, rounded_pixel_clk_lower; ... if (Rounded_pixel_clk Rounded_pixel_clk_upper = pixel_clk + pixel_clk/200; Rounded_pixel_clk_lower = pixel_clk-pixel_clk/200; }

We found that the Console mode of ubuntu 10.04 always switches to a default VGA mode (as if it was 640*480), and the following method does not work:1. edit/etc/default/grub and add text to the quiet splash of the row grub_cmdline_linux_default.2. Replace quiet splash with nomodeset noplymouth in the same line.3. Remove the comment before grub_terminal = console Failed to use all kinds of methods, suspected to be a service, searched for rcX. d/RCS.

By gooogleman@foxmail.com Some old man asked me about the debugging of my 2440 + sm502 solution. In view of my understanding of the cost and performance of sm502, I think it is really unnecessary to use it again. The reply is as follows: I have used this 2440 + sm502, but I do not recommend that you use this solution, because 2440 and sm502 are all at the edge of production. When you make it, you don't have to sell it. The cost is also very expensive. sm502 is about one hundre

//VGA display design//Pixel count always@ (Posedge CLK or Negedge rst_n) begin if (rst_n) X_cnt=11 ' D0; Reset Line coordinates 0 else if (x_cnt==11 ' d800)//line has 800 pixel point on the re-sweep x_cnt=11 ' D0; else x_cnt = x_cnt + 1 ' B1; Scan line End//Row Count always@ (Posedge CLK or Negedge rst_n) if (rst_n) y_cnt = Ten ' D0; Reset, column 0 else if (y_cnt==10 ' d525)//column has 525 pixel points on the re-sweep y_cnt=11