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231 lines
7.0 KiB
231 lines
7.0 KiB
#include "my_lcd.h" |
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#include "stm32469i_discovery_lcd.h" |
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#include "stm32469i_discovery_sdram.h" |
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#include "image_320x240_argb8888.h" |
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#include "life_augmented_argb8888.h" |
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extern LTDC_HandleTypeDef hltdc_eval; |
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extern DMA2D_HandleTypeDef hdma2d_eval; |
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#define LAYER0_ADDRESS (LCD_FB_START_ADDRESS) |
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static int32_t front_buffer = 0; |
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static int32_t pend_buffer = -1; |
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static uint32_t ImageIndex = 0; |
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static const uint32_t * Images[] = |
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{ |
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image_320x240_argb8888, |
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life_augmented_argb8888, |
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}; |
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static const uint32_t Buffers[] = |
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{ |
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LAYER0_ADDRESS, |
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LAYER0_ADDRESS + (800*480*2), |
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}; |
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static void OnError_Handler(uint32_t condition); |
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static void LCD_BriefDisplay(void); |
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static void CopyBuffer(uint32_t *pSrc, uint32_t *pDst, uint16_t x, uint16_t y, uint16_t xsize, uint16_t ysize); |
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static void CopyImage(uint32_t *pSrc, uint32_t *pDst, uint16_t x, uint16_t y, uint16_t xsize, uint16_t ysize); |
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void MY_LCD_Init() { |
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uint8_t lcd_status = LCD_OK; |
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lcd_status = BSP_LCD_Init(); |
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OnError_Handler(lcd_status != LCD_OK); |
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BSP_LCD_LayerDefaultInit(0, LAYER0_ADDRESS); |
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BSP_LCD_SelectLayer(0); |
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/* Set LTDC Line Event */ |
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HAL_LTDC_ProgramLineEvent(&hltdc_eval, 0); |
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/* Display example brief */ |
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LCD_BriefDisplay(); |
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/* Copy Buffer 0 into buffer 1, so only image area to be redrawn later */ |
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CopyBuffer((uint32_t *)Buffers[0], (uint32_t *)Buffers[1], 0, 0, 800, 480); |
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} |
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void MY_LCD_Tick() { |
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if(pend_buffer < 0) |
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{ |
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/* Prepare back buffer */ |
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CopyImage((uint32_t *)Images[ImageIndex++], (uint32_t *)Buffers[1- front_buffer], 240, 160, 320, 240); |
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pend_buffer = 1- front_buffer; |
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if(ImageIndex >= 2) |
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{ |
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ImageIndex = 0; |
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} |
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/* Wait some time before switching to next stage */ |
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HAL_Delay(2000); |
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} |
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} |
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/** |
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* @brief On Error Handler on condition TRUE. |
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* @param condition : Can be TRUE or FALSE |
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* @retval None |
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*/ |
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static void OnError_Handler(uint32_t condition) |
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{ |
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if(condition) |
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{ |
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BSP_LED_On(LED3); |
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while(1) { ; } /* Blocking on error */ |
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} |
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} |
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/** |
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* @brief Line Event callback. |
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* @param hltdc: pointer to a LTDC_HandleTypeDef structure that contains |
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* the configuration information for the LTDC. |
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* @retval None |
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*/ |
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void HAL_LTDC_LineEventCallback1(LTDC_HandleTypeDef *hltdc) |
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{ |
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if(pend_buffer >= 0) |
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{ |
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LTDC_LAYER(hltdc, 0)->CFBAR = ((uint32_t)Buffers[pend_buffer]); |
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__HAL_LTDC_RELOAD_IMMEDIATE_CONFIG(hltdc); |
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front_buffer = pend_buffer; |
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pend_buffer = -1; |
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} |
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HAL_LTDC_ProgramLineEvent(hltdc, 0); |
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} |
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/** |
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* @brief Display Example description. |
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* @param None |
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* @retval None |
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*/ |
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static void LCD_BriefDisplay(void) |
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{ |
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BSP_LCD_Clear(LCD_COLOR_WHITE); |
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BSP_LCD_SetBackColor(LCD_COLOR_RED); |
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BSP_LCD_SetTextColor(LCD_COLOR_RED); |
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BSP_LCD_FillRect(0, 0, 800, 112); |
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BSP_LCD_SetBackColor(LCD_COLOR_BLUE); |
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BSP_LCD_SetTextColor(LCD_COLOR_BLUE); |
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BSP_LCD_FillRect(0, 112, 800, 112); |
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BSP_LCD_SetBackColor(LCD_COLOR_GREEN); |
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BSP_LCD_SetTextColor(LCD_COLOR_GREEN); |
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BSP_LCD_FillRect(0, 224, 800, 112); |
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BSP_LCD_SetBackColor(LCD_COLOR_CYAN); |
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BSP_LCD_SetTextColor(LCD_COLOR_CYAN); |
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BSP_LCD_FillRect(0, 336, 400, 144); |
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BSP_LCD_SetBackColor(LCD_COLOR_MAGENTA); |
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BSP_LCD_SetTextColor(LCD_COLOR_MAGENTA); |
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BSP_LCD_FillRect(400, 336, 400, 144); |
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BSP_LCD_SetTextColor(LCD_COLOR_WHITE); |
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//BSP_LCD_DisplayStringAtLine(1, (uint8_t *)" LCD_DSI_VideoMode_DoubleBuffering"); |
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BSP_LCD_SetFont(&Font16); |
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//BSP_LCD_DisplayStringAtLine(4, (uint8_t *)"This example shows how to display images on LCD DSI using two buffers"); |
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//BSP_LCD_DisplayStringAtLine(5, (uint8_t *)"one for display and the other for draw "); |
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} |
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/** |
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* @brief Converts a line to an ARGB8888 pixel format. |
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* @param pSrc: Pointer to source buffer |
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* @param pDst: Output color |
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* @param xSize: Buffer width |
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* @param ColorMode: Input color mode |
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* @retval None |
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*/ |
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static void CopyBuffer(uint32_t *pSrc, uint32_t *pDst, uint16_t x, uint16_t y, uint16_t xsize, uint16_t ysize) |
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{ |
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uint32_t destination = (uint32_t)pDst + (y * 800 + x) * 2; |
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uint32_t source = (uint32_t)pSrc; |
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/*##-1- Configure the DMA2D Mode, Color Mode and output offset #############*/ |
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hdma2d_eval.Init.Mode = DMA2D_M2M; |
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hdma2d_eval.Init.ColorMode = DMA2D_OUTPUT_RGB565; |
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hdma2d_eval.Init.OutputOffset = 800 - xsize; |
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/*##-2- DMA2D Callbacks Configuration ######################################*/ |
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hdma2d_eval.XferCpltCallback = NULL; |
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/*##-3- Foreground Configuration ###########################################*/ |
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hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA; |
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hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; |
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hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565; |
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hdma2d_eval.LayerCfg[1].InputOffset = 0; |
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hdma2d_eval.Instance = DMA2D; |
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/* DMA2D Initialization */ |
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if(HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK) |
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{ |
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if(HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK) |
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{ |
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if (HAL_DMA2D_Start(&hdma2d_eval, source, destination, xsize, ysize) == HAL_OK) |
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{ |
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/* Polling For DMA transfer */ |
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HAL_DMA2D_PollForTransfer(&hdma2d_eval, 100); |
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} |
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} |
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} |
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} |
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/** |
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* @brief Converts a line to an ARGB8888 pixel format. |
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* @param pSrc: Pointer to source buffer |
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* @param pDst: Output color |
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* @param xSize: Buffer width |
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* @param ColorMode: Input color mode |
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* @retval None |
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*/ |
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static void CopyImage(uint32_t *pSrc, uint32_t *pDst, uint16_t x, uint16_t y, uint16_t xsize, uint16_t ysize) |
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{ |
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uint32_t destination = ((uint32_t)pDst) + (y * 800 + x) * 2; |
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uint32_t source = (uint32_t)pSrc; |
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/*##-1- Configure the DMA2D Mode, Color Mode and output offset #############*/ |
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hdma2d_eval.Init.Mode = DMA2D_M2M_BLEND; |
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hdma2d_eval.Init.ColorMode = DMA2D_OUTPUT_RGB565; |
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hdma2d_eval.Init.OutputOffset = 800 - xsize; |
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/*##-2- DMA2D Callbacks Configuration ######################################*/ |
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hdma2d_eval.XferCpltCallback = NULL; |
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hdma2d_eval.LayerCfg[0].InputOffset = 800 - xsize; |
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hdma2d_eval.LayerCfg[0].InputColorMode = DMA2D_INPUT_RGB565; |
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hdma2d_eval.LayerCfg[0].AlphaMode = DMA2D_NO_MODIF_ALPHA; |
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hdma2d_eval.LayerCfg[0].InputAlpha = 0; |
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/*##-3- Foreground Configuration ###########################################*/ |
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hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA; |
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hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; |
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hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_INPUT_ARGB8888; |
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hdma2d_eval.LayerCfg[1].InputOffset = 0; |
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hdma2d_eval.Instance = DMA2D; |
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/* DMA2D Initialization */ |
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if(HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK) |
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{ |
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if(HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK && HAL_DMA2D_ConfigLayer(&hdma2d_eval, 0) == HAL_OK) |
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{ |
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if (HAL_DMA2D_BlendingStart(&hdma2d_eval, source, destination, destination, xsize, ysize) == HAL_OK) |
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{ |
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/* Polling For DMA transfer */ |
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HAL_DMA2D_PollForTransfer(&hdma2d_eval, 100); |
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} |
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} |
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} |
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}
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