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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_1.h"
#include "rgb565_2.h"
/** @addtogroup STM32F4xx_HAL_Examples
* @{
*/
/** @addtogroup DMA2D_MemToMemWithBlending
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
DMA2D_HandleTypeDef Dma2dHandle;
/* DMA2D output address and Input for LCD */
uint32_t aBlendedImage[19200];
/* Private function prototypes -----------------------------------------------*/
static void DMA2D_Config(void);
static void LCD_Config(void);
static void TransferError(DMA2D_HandleTypeDef* Dma2dHandle);
static void TransferComplete(DMA2D_HandleTypeDef* Dma2dHandle);
static void SystemClock_Config(void);
static void Error_Handler(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
/* STM32F4xx HAL library initialization:
- Configure the Flash prefetch, instruction and Data caches
- Configure the Systick to generate an interrupt each 1 msec
- Set NVIC Group Priority to 4
- Global MSP (MCU Support Package) initialization
*/
HAL_Init();
/* Configure LED3 and LED4 */
BSP_LED_Init(LED3);
BSP_LED_Init(LED4);
/* Configure the system clock to 180 MHz */
SystemClock_Config();
/*##-1- LCD Configuration ##################################################*/
LCD_Config();
/*##-2- Configure DMA2D : Configure foreground and background ##############*/
DMA2D_Config();
/*##-3- Start DMA2D transfer ###############################################*/
if(HAL_DMA2D_BlendingStart_IT(&Dma2dHandle, (uint32_t)&aRGB565_1, (uint32_t)&aRGB565_2, (uint32_t)&aBlendedImage, 240, 160) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Infinite loop */
while (1)
{
}
}
/**
* @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
* - first image loaded from FLASH memory
* - constant alpha value (decreased to see the background)
* - color mode as RGB565 pixel format
* 4) Configure the background
* - second image loaded from FLASH memory
* - color mode as RGB565 pixel format
* @retval None
*/
static void DMA2D_Config(void)
{
/* Configure the DMA2D Mode, Color Mode and output offset */
Dma2dHandle.Init.Mode = DMA2D_M2M_BLEND;
Dma2dHandle.Init.ColorMode = DMA2D_RGB565;
Dma2dHandle.Init.OutputOffset = 0x0;
/* DMA2D Callbacks Configuration */
Dma2dHandle.XferCpltCallback = TransferComplete;
Dma2dHandle.XferErrorCallback = TransferError;
/* Foreground Configuration */
Dma2dHandle.LayerCfg[1].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[1].InputAlpha = 0x7F;
Dma2dHandle.LayerCfg[1].InputColorMode = DMA2D_INPUT_RGB565;
Dma2dHandle.LayerCfg[1].InputOffset = 0x0;
/* Background Configuration */
Dma2dHandle.LayerCfg[0].AlphaMode = DMA2D_REPLACE_ALPHA;
Dma2dHandle.LayerCfg[0].InputAlpha = 0x7F;
Dma2dHandle.LayerCfg[0].InputColorMode = DMA2D_INPUT_RGB565;
Dma2dHandle.LayerCfg[0].InputOffset = 0x0;
Dma2dHandle.Instance = DMA2D;
/* DMA2D Initialization */
if(HAL_DMA2D_Init(&Dma2dHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 0);
HAL_DMA2D_ConfigLayer(&Dma2dHandle, 1);
}
/**
* @brief LCD configuration.
* @note This function Configure the LTDC peripheral :
* 1) Configure the Pixel Clock for the LCD
* 2) Configure the LTDC Timing and Polarity
* 3) Configure the LTDC Layer 2 :
* - RGB565 as pixel format
* - The frame buffer is located at internal RAM : The output of DMA2D transfer
* - The Layer size configuration : 240x160
* @retval None
*/
static void LCD_Config(void)
{
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
LTDC_LayerCfgTypeDef pLayerCfg;
static LTDC_HandleTypeDef LtdcHandle;
/* Initialization of ILI9341 component */
ili9341_Init();
/* LTDC Initialization -------------------------------------------------------*/
/* Polarity configuration */
/* Initialize the horizontal synchronization polarity as active low */
LtdcHandle.Init.HSPolarity = LTDC_HSPOLARITY_AL;
/* Initialize the vertical synchronization polarity as active low */
LtdcHandle.Init.VSPolarity = LTDC_VSPOLARITY_AL;
/* Initialize the data enable polarity as active low */
LtdcHandle.Init.DEPolarity = LTDC_DEPOLARITY_AL;
/* Initialize the pixel clock polarity as input pixel clock */
LtdcHandle.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
/* Timing configuration (Typical configuration from ILI9341 datasheet)
HSYNC=10 (9+1)
HBP=20 (29-10+1)
ActiveW=240 (269-20-10+1)
HFP=10 (279-240-20-10+1)
VSYNC=2 (1+1)
VBP=2 (3-2+1)
ActiveH=320 (323-2-2+1)
VFP=4 (327-320-2-2+1)
*/
/* Timing configuration */
/* Horizontal synchronization width = Hsync - 1 */
LtdcHandle.Init.HorizontalSync = 9;
/* Vertical synchronization height = Vsync - 1 */
LtdcHandle.Init.VerticalSync = 1;
/* Accumulated horizontal back porch = Hsync + HBP - 1 */
LtdcHandle.Init.AccumulatedHBP = 29;
/* Accumulated vertical back porch = Vsync + VBP - 1 */
LtdcHandle.Init.AccumulatedVBP = 3;
/* Accumulated active width = Hsync + HBP + Active Width - 1 */
LtdcHandle.Init.AccumulatedActiveH = 323;
/* Accumulated active height = Vsync + VBP + Active Height - 1 */
LtdcHandle.Init.AccumulatedActiveW = 269;
/* Total height = Vsync + VBP + Active Height + VFP - 1 */
LtdcHandle.Init.TotalHeigh = 327;
/* Total width = Hsync + HBP + Active Width + HFP - 1 */
LtdcHandle.Init.TotalWidth = 279;
/* LCD clock configuration */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 MHz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 MHz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/4 = 48 MHz */
/* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDIVR_8 = 48/8 = 6 MHz */
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
PeriphClkInitStruct.PLLSAI.PLLSAIN = 192;
PeriphClkInitStruct.PLLSAI.PLLSAIR = 4;
PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_8;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Configure R,G,B component values for LCD background color */
LtdcHandle.Init.Backcolor.Blue = 0;
LtdcHandle.Init.Backcolor.Green = 0;
LtdcHandle.Init.Backcolor.Red = 0;
LtdcHandle.Instance = LTDC;
/* Layer1 Configuration ------------------------------------------------------*/
/* Windowing configuration */
/*
WindowX0 = Horizontal start
WindowX1 = Horizontal stop
WindowY0 = Vertical start
WindowY1 = Vertical stop
*/
pLayerCfg.WindowX0 = 0;
pLayerCfg.WindowX1 = 240;
pLayerCfg.WindowY0 = 80;
pLayerCfg.WindowY1 = 240;
/* Pixel Format configuration*/
pLayerCfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
/* Start Address configuration : frame buffer is located at FLASH memory */
pLayerCfg.FBStartAdress = (uint32_t)&aBlendedImage;
/* Alpha constant (255 totally opaque) */
pLayerCfg.Alpha = 255;
/* Default Color configuration (configure A,R,G,B component values) */
pLayerCfg.Alpha0 = 0;
pLayerCfg.Backcolor.Blue = 0;
pLayerCfg.Backcolor.Green = 0;
pLayerCfg.Backcolor.Red = 0;
/* Configure blending factors */
pLayerCfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_CA;
pLayerCfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_CA;
/* Configure the number of lines and number of pixels per line */
pLayerCfg.ImageWidth = 240;
pLayerCfg.ImageHeight = 160;
/* Configure the LTDC */
if(HAL_LTDC_Init(&LtdcHandle) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Configure the Layer*/
if(HAL_LTDC_ConfigLayer(&LtdcHandle, &pLayerCfg, 1) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
}
/**
* @brief This function is executed in case of error occurrence.
* @param None
* @retval None
*/
static void Error_Handler(void)
{
/* Turn LED3/LED4 on */
BSP_LED_On(LED3);
BSP_LED_On(LED4);
while(1)
{
}
}
/**
* @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) = 8000000
* PLL_M = 8
* PLL_N = 360
* PLL_P = 2
* PLL_Q = 7
* 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;
/* 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 = 8;
RCC_OscInitStruct.PLL.PLLN = 360;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 7;
HAL_RCC_OscConfig(&RCC_OscInitStruct);
/* Activate the Over-Drive mode */
HAL_PWREx_EnableOverDrive();
/* 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;
HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);
}
/**
* @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 LED3 on */
BSP_LED_On(LED3);
}
/**
* @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 LED4 on */
BSP_LED_On(LED4);
}
#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
/**
* @}
*/
/**
* @}
*/