/** ****************************************************************************** * @file DCMI/DCMI_SnapshotMode/Src/main.c * @author MCD Application Team * @brief This example describe how to configure the camera interface (DCMI) in snapshot * mode to handle a single image capture in QVGA (320x240) resolution and RGB565 * format and display the obtained image on LCD screen. ****************************************************************************** * @attention * *

© COPYRIGHT(c) 2017 STMicroelectronics

* * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ /* Includes ------------------------------------------------------------------*/ #include "main.h" /** @addtogroup STM32F4xx_HAL_Examples * @{ */ /** @addtogroup DCMI_SnapshotMode * @{ */ /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ __IO uint32_t frame_buffer_ready = 0; /* Private function prototypes -----------------------------------------------*/ static void SystemClock_Config(void); static void LCD_LL_ConvertFrameToARGB8888(uint32_t pSrc, uint32_t pDst); 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; /* 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(); /* Initialize used Leds */ BSP_LED_Init(LED1); BSP_LED_Init(LED3); /*##-1- Initialise the LCD #################################################*/ /* Initialize and start the LCD display in mode LCD_MODE_ADAPTED_COMMAND_TE_DSI_LINK * and orientation mode LCD_ORIENTATION_LANDSCAPE, using LCD_FRAME_BUFFER * as LCD frame buffer address. */ BSP_LCD_Init(); BSP_LCD_LayerDefaultInit(0, LCD_FRAME_BUFFER); 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 *)"DCMI Snapshot example", CENTER_MODE); BSP_LCD_DisplayStringAt(0, 460, (uint8_t *)"Initialize Camera", CENTER_MODE); /*##-2- Camera Initialization and start capture ############################*/ /* Initialize the Camera in QVGA mode */ BSP_CAMERA_Init(CAMERA_R320x240); /* Wait 1s to let auto-loops in the camera module converge and lead to correct exposure */ HAL_Delay(1000); /* Start the Camera Snapshot Capture */ BSP_CAMERA_SnapshotStart((uint8_t *)CAMERA_FRAME_BUFFER); /* Wait until frame buffer is ready */ while(frame_buffer_ready == 0) {;} /* Convert captured frame to ARGB8888 */ LCD_LL_ConvertFrameToARGB8888((uint32_t)CAMERA_FRAME_BUFFER, (uint32_t)LCD_FRAME_BUFFER); BSP_LCD_ClearStringLine(460); BSP_LCD_DisplayStringAt(0, 460, (uint8_t *)"Capture OK - Test End", CENTER_MODE); /* Notify Test OK */ BSP_LED_On(LED1); while (1) { } } /** * @brief Camera Frame Event callback. */ void BSP_CAMERA_FrameEventCallback(void) { frame_buffer_ready = 1; } /** * @brief Converts an RGB565 camera frame buffer into a ARGB8888 LCD Frame buffer. * @param pSrc: Pointer to source buffer in Camera frame buffer * @param pDst: Pointer to destination buffer in LCD frame buffer * @retval None */ static void LCD_LL_ConvertFrameToARGB8888(uint32_t pSrc, uint32_t pDst) { DMA2D_HandleTypeDef hdma2d_eval; uint32_t offset_lcd = 0; HAL_StatusTypeDef status; /* Set display in the middle of the screen */ offset_lcd = ((((LcdResY - CameraResY) / 2) * LcdResX) /* Middle of the screen on Y axis */ + ((LcdResX - CameraResX) / 2)) /* Middle of the screen on X axis */ * ARGB8888_BYTE_PER_PIXEL; /* 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 */ hdma2d_eval.Init.OutputOffset = (LcdResX - CameraResX); /* 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 */ status = HAL_DMA2D_Init(&hdma2d_eval); OnError_Handler(status != HAL_OK); status = HAL_DMA2D_ConfigLayer(&hdma2d_eval, 1); OnError_Handler(status != HAL_OK); /* Convert frame to ARGB8888 pixels */ if (HAL_DMA2D_Start(&hdma2d_eval, (uint32_t)pSrc, (uint32_t)(pDst + offset_lcd), CameraResX, CameraResY) == HAL_OK) { /* Polling For DMA transfer */ HAL_DMA2D_PollForTransfer(&hdma2d_eval, 10); } } /** * @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 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 /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/