Hi,
The LCD failed to display when customer increase the number of sampling data. Which part of LCD configuration should be changed in this case? Please help provide some possible causes of the problem or how can we analyze this case? Below is configuration code.
// LCD clk#define LCD_SIZE 261156 #define LCD_CLK 228000000 #define PALETTE_OFFSET 4 #define FRAME_BUFFER_0 0 #define FRAME_BUFFER_1 1 #define PINMUX18_GPIO8_10_ENABLE (SYSCFG_PINMUX18_PINMUX18_31_28_GPIO8_10 << \ SYSCFG_PINMUX18_PINMUX18_31_28_SHIFT) // LCD buffer init
#pragma DATA_ALIGN(g_pucBuffer, 4); unsigned char g_pucBuffer[GrOffScreen16BPPSize(LCD_WIDTH, LCD_HEIGHT)]; tDisplay g_sSHARP800x480x16Display; unsigned short palette_32b[PALETTE_SIZE/2] = {0x4000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u, 0x0000u}; tContext sContext; static void SetUpLCD(void); void LcdInit(void) { unsigned int i = 0; unsigned char *dest; unsigned char *src;
SetupIntc();
IntRegister(C674X_MASK_INT6, LCDIsr); IntEventMap(C674X_MASK_INT6, SYS_INT_LCDC_INT);
IntEnable(C674X_MASK_INT6); //LCD initialization SetUpLCD(); // RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int)(g_pucBuffer+PALETTE_OFFSET), (unsigned int)(g_pucBuffer+PALETTE_OFFSET) + sizeof(g_pucBuffer) - 2 - PALETTE_OFFSET, FRAME_BUFFER_0); RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int)(g_pucBuffer+PALETTE_OFFSET), (unsigned int)(g_pucBuffer+PALETTE_OFFSET) + sizeof(g_pucBuffer) - 2 - PALETTE_OFFSET, FRAME_BUFFER_1); src = (unsigned char *) palette_32b; dest = (unsigned char *) (g_pucBuffer+PALETTE_OFFSET); // for( i = PALETTE_OFFSET; i < (PALETTE_SIZE+PALETTE_OFFSET); i++) { *dest++ = *src++; } // GrOffScreen16BPPInit(&g_sSHARP800x480x16Display, g_pucBuffer, LCD_WIDTH, LCD_HEIGHT); // GrContextInit(&sContext, &g_sSHARP800x480x16Display); // RasterEndOfFrameIntEnable(SOC_LCDC_0_REGS); // enable raster RasterEnable(SOC_LCDC_0_REGS); ConfigRasterDisplayEnable(); } /* ** Configures raster to display image */ static void SetUpLCD(void) { unsigned int val; volatile unsigned int savePinMux = 0; PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_LCDC, PSC_POWERDOMAIN_ALWAYS_ON, PSC_MDCTL_NEXT_ENABLE); LCDPinMuxSetup(); savePinMux = HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(18)) & \ ~(SYSCFG_PINMUX18_PINMUX18_31_28); HWREG(SOC_SYSCFG_0_REGS + SYSCFG0_PINMUX(18)) = \ (PINMUX18_GPIO8_10_ENABLE | savePinMux);
GPIODirModeSet(SOC_GPIO_0_REGS, 139, GPIO_DIR_OUTPUT); GPIOPinWrite(SOC_GPIO_0_REGS, 139, GPIO_PIN_HIGH); // disable raster RasterDisable(SOC_LCDC_0_REGS); // RasterClkConfig(SOC_LCDC_0_REGS, 28800000, LCD_CLK); // configure LCD DMA controller RasterDMAConfig(SOC_LCDC_0_REGS, RASTER_DOUBLE_FRAME_BUFFER, RASTER_BURST_SIZE_16, RASTER_FIFO_THRESHOLD_8, RASTER_BIG_ENDIAN_DISABLE); // RasterModeConfig(SOC_LCDC_0_REGS, RASTER_DISPLAY_MODE_TFT, RASTER_PALETTE_DATA, RASTER_COLOR, RASTER_RIGHT_ALIGNED); // RasterLSBDataOrderSelect(SOC_LCDC_0_REGS); // RasterNibbleModeDisable(SOC_LCDC_0_REGS); // RasterTiming2Configure(SOC_LCDC_0_REGS, RASTER_FRAME_CLOCK_LOW | RASTER_LINE_CLOCK_LOW | RASTER_PIXEL_CLOCK_LOW | RASTER_SYNC_EDGE_RISING| RASTER_SYNC_CTRL_ACTIVE| RASTER_AC_BIAS_HIGH , 0, 255); // RasterHparamConfig(SOC_LCDC_0_REGS, 800, 63, 70, 70); RasterVparamConfig(SOC_LCDC_0_REGS, 480, 4, 1, 23); // RasterFIFODMADelayConfig(SOC_LCDC_0_REGS, (17647058/8823529)); // val = HWREG(0x01C14118); val &= 0x0fffffff; HWREG(0x01C14118) = val; } /****************************************************************************/ /* */ /* LCD ISR */ /* */ /****************************************************************************/ void LCDIsr(void) { unsigned int status; IntEventClear(SYS_INT_LCDC_INT); status = RasterIntStatus(SOC_LCDC_0_REGS,RASTER_END_OF_FRAME0_INT_STAT | RASTER_END_OF_FRAME1_INT_STAT ); status = RasterClearGetIntStatus(SOC_LCDC_0_REGS, status); if (status & RASTER_END_OF_FRAME0_INT_STAT) { RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int)(g_pucBuffer+4), (unsigned int)(g_pucBuffer+4) + sizeof(g_pucBuffer) - 2 - 4, 0); } if(status & RASTER_END_OF_FRAME1_INT_STAT) { RasterDMAFBConfig(SOC_LCDC_0_REGS, (unsigned int)(g_pucBuffer+4), (unsigned int)(g_pucBuffer+4) + sizeof(g_pucBuffer) - 2 - 4, 1); } }
