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Found 1 result

  1. Hello, I try to generate a VGA signal with a VDMA, Video Timing, and AXI4 Stream to Video Out IP for my Zybo. So I create the following block design with the given settings (Note: I test the design with the test pattern generator instead of the VDMA before, so I know that the settings of the Timing Generator and Video Out IP are correct). My code looks like this: #ifdef WITH_TESTPATTERN #include "xv_tpg.h" #endif #include "xaxivdma.h" #include "xparameters.h" #ifdef WITH_TESTPATTERN XV_tpg TPG; XV_tpg_Config* TPG_Config; #endif XAxiVdma_Config* VDMA_Config; XAxiVdma VDMA; XAxiVdma_DmaSetup ReadConfiguration; unsigned int frame_buffer[800][600][3]; unsigned int srcBuffer; u32 Status; void fill(void) { for(u32 i = 0x00; i < 800; i++) { for(u32 j = 0x00; j < 600; j++) { frame_buffer[i][j][0] = 0xFF; frame_buffer[i][j][1] = 0xFF; frame_buffer[i][j][2] = 0xFF; } } } int main() { #ifdef WITH_TESTPATTERN TPG_Config = XV_tpg_LookupConfig(XPAR_TESTPATTERN_DEVICE_ID); if(!TPG_Config) { xil_printf("Error during test pattern generator configuration!\n\r"); return -1; } Status = XV_tpg_CfgInitialize(&TPG, TPG_Config, TPG_Config->BaseAddress); if(Status != XST_SUCCESS) { xil_printf("Error during test pattern generator initialization!\n\r"); return -1; } XV_tpg_Set_height(&TPG, 600); XV_tpg_Set_width(&TPG, 800); XV_tpg_Set_bckgndId(&TPG, 0x0C); XV_tpg_EnableAutoRestart(&TPG); XV_tpg_Start(&TPG); #endif VDMA_Config = XAxiVdma_LookupConfig(XPAR_VIDEODMA_DEVICE_ID); if(!VDMA_Config) { xil_printf("Error during VDMA configuration!\n\r"); return -1; } Status = XAxiVdma_CfgInitialize(&VDMA, VDMA_Config, VDMA_Config->BaseAddress); if(Status != XST_SUCCESS) { xil_printf("Error during VDMA initialization!\n\r"); return -1; } ReadConfiguration.VertSizeInput = 600; ReadConfiguration.HoriSizeInput = 800 * (VDMA_Config->Mm2SStreamWidth >> 3); ReadConfiguration.Stride = 800 * (VDMA_Config->Mm2SStreamWidth >> 3); ReadConfiguration.FrameDelay = 0; ReadConfiguration.EnableCircularBuf = 1; ReadConfiguration.EnableSync = 0; ReadConfiguration.PointNum = 0; ReadConfiguration.EnableFrameCounter = 0; ReadConfiguration.FixedFrameStoreAddr = 0; Status = XAxiVdma_DmaConfig(&VDMA, XAXIVDMA_READ, &ReadConfiguration); if(Status != XST_SUCCESS) { xil_printf("Read channel configuration failed!\n\r"); return -1; } fill(); Status = XAxiVdma_DmaSetBufferAddr(&VDMA, XAXIVDMA_READ, (UINTPTR*)frame_buffer); if(Status != XST_SUCCESS) { xil_printf("Read channel set buffer address failed!\n\r"); return -1; } Status = XAxiVdma_DmaStart(&VDMA, XAXIVDMA_READ); if(Status != XST_SUCCESS) { xil_printf("Failed to start DMA engine (read channel)!\n\r"); return -1; } xil_printf("Start...\n\r"); while(1) { } return 0; } But the monitor doesn´t show the picture (and no message that the signal is missing, so HSync and VSync work) and I´ve got the terminal message Read channel set buffer address failed! So what is wrong with the code? Thank you guys