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/**
******************************************************************************
* @file DMA2D/DMA2D_MemToMemWithBlending/Src/main.c
* @author MCD Application Team
* @brief This example provides a description of how to configure
* DMA2D peripheral in Memory to Memory with blending transfer mode.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "RGB565_240x130_1.h"
#include "RGB565_240x130_2.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup DMA2D_MemToMemWithBlending
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* DMA2D output address in SRAM : this is the buffer displayed on LCD screen */
/* The buffer in SRAM is 240x130x2 = 60 KBytes */
uint32_t aBlendedImage[(LAYER_SIZE_X * LAYER_SIZE_Y * LAYER_BYTE_PER_PIXEL) / 4];
DMA2D_HandleTypeDef Dma2dHandle;
/* Blended image Ready flag */
static __IO uint32_t blended_image_ready = 0;
static uint32_t LcdResX = WVGA_RES_X; /* WVGA landscape */
static uint32_t LcdResY = WVGA_RES_Y;
static uint32_t stageNb = 1;
static uint32_t offset_address_area_blended_image_in_lcd_buffer = 0;
/* Private function prototypes -----------------------------------------------*/
static uint8_t CopyBlendedBufferToLcdFrameBuffer(void *pSrc, void *pDst, uint32_t xSize, uint32_t ySize);
static void DMA2D_Config(void);
static void TransferError(DMA2D_HandleTypeDef* Dma2dHandle);
static void TransferComplete(DMA2D_HandleTypeDef* Dma2dHandle);
static void SystemClock_Config(void);
static void OnError_Handler(uint32_t condition);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
uint8_t lcd_status = LCD_OK;
HAL_StatusTypeDef hal_status = HAL_OK;
LcdResX = WVGA_RES_X; /* WVGA landscape */
LcdResY = WVGA_RES_Y;
stageNb = 1;
blended_image_ready = 0;
offset_address_area_blended_image_in_lcd_buffer = ((((LcdResY - LAYER_SIZE_Y) / 2) * LcdResX)
+ ((LcdResX - LAYER_SIZE_X) / 2))
* ARGB8888_BYTE_PER_PIXEL;
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Systick timer is configured by default as source of time base, but user
can eventually implement his proper time base source (a general purpose
timer for example or other time source), keeping in mind that Time base
duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
handled in milliseconds basis.
- Set NVIC Group Priority to 4
- Low Level Initialization: global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/* Wait until MFX is ready after reset */
HAL_Delay(100);
/* Configure LED1, LED2 and LED3 */
BSP_LED_Init(LED1);
BSP_LED_Init(LED2);
BSP_LED_Init(LED3);
/*##-1- Initialize the LCD #################################################*/
/* Proceed to LTDC, DSI initialization and LCD screen initialization
* with the configuration filled in above */
lcd_status = BSP_LCD_Init();
BSP_LCD_LayerDefaultInit(0, LCD_FB_START_ADDRESS);
OnError_Handler(lcd_status != LCD_OK);
/* Prepare using DMA2D the 800x480 LCD frame buffer to display background color black */
/* and title of the example */
BSP_LCD_Clear(LCD_COLOR_BLACK);
BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
BSP_LCD_SetFont(&Font16);
/* Print example description */
BSP_LCD_DisplayStringAt(0, 440, (uint8_t *)"DMA2D_MemToMemWithBlending example", CENTER_MODE);
HAL_Delay(100);
/* Go to next stageNb of display configuration, consists in refreshing only the camera */
/* frame buffer area of the complete LCD frame buffer */
stageNb++; /* stageNb == 2 */
/*##-2- Configure DMA2D : Configure foreground and background ##############*/
DMA2D_Config();
/*##-3- Start DMA2D transfer in interrupt mode ################################################*/
/*## RGB565_240x130_1[] is the foreground layer and RGB565_240x130_2[] is the background layer */
hal_status = HAL_DMA2D_BlendingStart_IT(&Dma2dHandle,
(uint32_t)&RGB565_240x130_1,
(uint32_t)&RGB565_240x130_2,
(uint32_t)&aBlendedImage,
LAYER_SIZE_X,
LAYER_SIZE_Y);
OnError_Handler(hal_status != HAL_OK);
/*##-4- Copy blended image in center of LCD frame buffer ################################################*/
/* Wait until blended image is ready to be displayed */
while(blended_image_ready == 0) {;}
/* Blocking copy Blended image buffer to LCD frame buffer center area */
/* Using the DMA2D in polling mode */
lcd_status = CopyBlendedBufferToLcdFrameBuffer((void*)&(aBlendedImage[0]),
(void*)(LCD_FRAME_BUFFER + offset_address_area_blended_image_in_lcd_buffer),
LAYER_SIZE_X,
LAYER_SIZE_Y);
while (1)
{
;
}
}
/**
* @brief Copy and convert the blended image (LAYER_SIZE_X, LAYER_SIZE_Y) of format RGB565
* to LCD frame buffer area centered in WVGA resolution.
* The area of copy is of size (LAYER_SIZE_X, LAYER_SIZE_Y) in ARGB8888.
* @param pSrc: Pointer to source buffer : blended image buffer start here
* @param pDst: Pointer to destination buffer LCD frame buffer center area start here
* @param xSize: Buffer width (LAYER_SIZE_X here)
* @param ySize: Buffer height (LAYER_SIZE_Y here)
* @retval LCD Status : LCD_OK or LCD_ERROR
*/
static uint8_t CopyBlendedBufferToLcdFrameBuffer(void *pSrc, void *pDst, uint32_t xSize, uint32_t ySize)
{
DMA2D_HandleTypeDef hdma2d_eval;
HAL_StatusTypeDef hal_status = HAL_OK;
uint8_t lcd_status = LCD_ERROR;
/* Configure the DMA2D Mode, Color Mode and output offset */
hdma2d_eval.Init.Mode = DMA2D_M2M_PFC;
hdma2d_eval.Init.ColorMode = DMA2D_ARGB8888; /* Output color out of PFC */
/* Output offset in pixels == nb of pixels to be added at end of line to come to the */
/* first pixel of the next line : on the output side of the DMA2D computation */
hdma2d_eval.Init.OutputOffset = (LcdResX - LAYER_SIZE_X);
/* Foreground Configuration */
hdma2d_eval.LayerCfg[1].AlphaMode = DMA2D_NO_MODIF_ALPHA;
hdma2d_eval.LayerCfg[1].InputAlpha = 0xFF; /* fully opaque */
hdma2d_eval.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565;
hdma2d_eval.LayerCfg[1].InputOffset = 0;
hdma2d_eval.Instance = DMA2D;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&hdma2d_eval) == HAL_OK)
{
if(HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1) == HAL_OK)
{
if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)pDst, xSize, ySize) == HAL_OK)
{
/* Polling For DMA transfer */
hal_status = HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10);
if(hal_status == HAL_OK)
{
/* return good status on exit */
lcd_status = LCD_OK;
}
}
}
}
return(lcd_status);
}
/**
* @brief DMA2D configuration.
* @note This function Configure the DMA2D peripheral :
* 1) Configure the Transfer mode as memory to memory with blending.
* 2) Configure the output color mode as RGB565 pixel format.
* 3) Configure the Foreground
* - Foreground image is loaded from FLASH memory (RGB565_240x130_2[])
* - constant alpha value (decreased to see the background)
* - color mode as RGB565 pixel format
* 4) Configure the Background
* - Background image loaded from FLASH memory (RGB565_240x130_1[])
* - color mode as RGB565 pixel format
* @retval
* None
*/
static void DMA2D_Config(void)
{
HAL_StatusTypeDef hal_status = HAL_OK;
/* Configure the DMA2D Mode, Color Mode and output offset */
Dma2dHandle.Init.Mode = DMA2D_M2M_BLEND; /* DMA2D mode Memory to Memory with Blending */
Dma2dHandle.Init.ColorMode = DMA2D_RGB565; /* output format of DMA2D */
Dma2dHandle.Init.OutputOffset = 0x0; /* No offset in output */
/* DMA2D Callbacks Configuration */
Dma2dHandle.XferCpltCallback = TransferComplete;
Dma2dHandle.XferErrorCallback = TransferError;
/* Foreground layer Configuration */
Dma2dHandle.LayerCfg[1].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[1].InputAlpha = 0x7F; /* 127 : semi-transparent */
Dma2dHandle.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565;
Dma2dHandle.LayerCfg[1].InputOffset = 0x0; /* No offset in input */
/* Background layer Configuration */
Dma2dHandle.LayerCfg[0].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[0].InputAlpha = 0x7F; /* 127 : semi-transparent */
Dma2dHandle.LayerCfg[0].InputColorMode = DMA2D_INPUT_RGB565;
Dma2dHandle.LayerCfg[0].InputOffset = 0x0; /* No offset in input */
Dma2dHandle.Instance = DMA2D;
/* DMA2D Initialization */
hal_status = HAL_DMA2D_Init(&Dma2dHandle);
OnError_Handler(hal_status != HAL_OK);
/* Apply DMA2D Foreground configuration */
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 1);
/* Apply DMA2D Background configuration */
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 0);
}
/**
* @brief On Error Handler on condition TRUE.
* @param condition : Can be TRUE or FALSE
* @retval None
*/
static void OnError_Handler(uint32_t condition)
{
if(condition)
{
BSP_LED_On(LED3);
while(1) { ; } /* Blocking on error */
}
}
/**
* @brief DMA2D Transfer completed callback
* @param hdma2d: DMA2D handle.
* @note This example shows a simple way to report end of DMA2D transfer, and
* you can add your own implementation.
* @retval None
*/
static void TransferComplete(DMA2D_HandleTypeDef *hdma2d)
{
/* Turn LED1 On */
BSP_LED_On(LED1);
/* The Blended image is now ready for display */
blended_image_ready = 1;
}
/**
* @brief DMA2D error callbacks
* @param hdma2d: DMA2D handle
* @note This example shows a simple way to report DMA2D transfer error, and you can
* add your own implementation.
* @retval None
*/
static void TransferError(DMA2D_HandleTypeDef *hdma2d)
{
/* Turn LED2 On */
BSP_LED_On(LED2);
}
/**
* @brief System Clock Configuration
* The system Clock is configured as follow :
* System Clock source = PLL (HSE)
* SYSCLK(Hz) = 180000000
* HCLK(Hz) = 180000000
* AHB Prescaler = 1
* APB1 Prescaler = 4
* APB2 Prescaler = 2
* HSE Frequency(Hz) = 25000000
* PLL_M = 25
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* PLL_R = 6
* VDD(V) = 3.3
* Main regulator output voltage = Scale1 mode
* Flash Latency(WS) = 5
* @param None
* @retval None
*/
static void SystemClock_Config(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_OscInitTypeDef RCC_OscInitStruct;
HAL_StatusTypeDef ret = HAL_OK;
/* Enable Power Control clock */
__HAL_RCC_PWR_CLK_ENABLE();
/* The voltage scaling allows optimizing the power consumption when the device is
clocked below the maximum system frequency, to update the voltage scaling value
regarding system frequency refer to product datasheet. */
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/* Enable HSE Oscillator and activate PLL with HSE as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
RCC_OscInitStruct.PLL.PLLR = 6;
ret = HAL_RCC_OscConfig(&RCC_OscInitStruct);
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Activate the OverDrive to reach the 180 MHz Frequency */
ret = HAL_PWREx_EnableOverDrive();
if(ret != HAL_OK)
{
while(1) { ; }
}
/* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2 clocks dividers */
RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
ret = HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
if(ret != HAL_OK)
{
while(1) { ; }
}
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/