DCMI for f446re ,ov7670
Dependencies: ILI9341_SPI OV7670_SCCB mbed
DCMI.h
- Committer:
- tmnt
- Date:
- 2016-11-20
- Revision:
- 2:a75d27406b2f
- Parent:
- 0:4e2fae6764b6
File content as of revision 2:a75d27406b2f:
#include "mbed.h" uint8_t frame_buffer[145][300]={0xff,0xff}; DMA_HandleTypeDef dcmi_Dma; DCMI_HandleTypeDef dcmi; void dcmi_Init(){ frame_buffer[100][0]=0xFF; frame_buffer[100][1]=0xFF; GPIO_InitTypeDef GPIO_InitStruct; /*Configure GPIO pin : PA8 MCO1 for cam XCLK*/ HAL_RCC_MCOConfig(RCC_MCO1, RCC_MCO1SOURCE_HSE, RCC_MCODIV_1); __GPIOA_CLK_ENABLE(); GPIO_InitStruct.Pin = GPIO_PIN_8; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_LOW; GPIO_InitStruct.Alternate = GPIO_AF0_MCO; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); GPIO_InitTypeDef dcmipinsa,dcmipinsb,dcmipinsc; dcmipinsa.Pin = GPIO_PIN_4|GPIO_PIN_6; dcmipinsa.Mode = GPIO_MODE_AF_PP; dcmipinsa.Pull = GPIO_PULLDOWN; dcmipinsa.Speed = GPIO_SPEED_HIGH; dcmipinsa.Alternate = GPIO_AF13_DCMI; HAL_GPIO_Init(GPIOA, &dcmipinsa); __GPIOB_CLK_ENABLE(); dcmipinsb.Pin = GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9; dcmipinsb.Mode = GPIO_MODE_AF_PP; dcmipinsb.Pull = GPIO_PULLDOWN; dcmipinsb.Speed = GPIO_SPEED_HIGH; dcmipinsb.Alternate = GPIO_AF13_DCMI; HAL_GPIO_Init(GPIOB, &dcmipinsb); __GPIOC_CLK_ENABLE(); dcmipinsc.Pin = GPIO_PIN_6|GPIO_PIN_7|GPIO_PIN_8|GPIO_PIN_9|GPIO_PIN_11; dcmipinsc.Mode = GPIO_MODE_AF_PP; dcmipinsc.Pull = GPIO_PULLDOWN; dcmipinsc.Speed = GPIO_SPEED_HIGH; dcmipinsc.Alternate = GPIO_AF13_DCMI; HAL_GPIO_Init(GPIOC, &dcmipinsc); __DMA2_CLK_ENABLE(); dcmi_Dma.Instance = DMA2_Stream1; dcmi_Dma.Init.Channel = DMA_CHANNEL_1; dcmi_Dma.Init.Direction = DMA_PERIPH_TO_MEMORY; dcmi_Dma.Init.PeriphInc = DMA_PINC_DISABLE; dcmi_Dma.Init.MemInc = DMA_MINC_ENABLE; dcmi_Dma.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD; dcmi_Dma.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD ; dcmi_Dma.Init.Mode = DMA_CIRCULAR; dcmi_Dma.Init.Priority = DMA_PRIORITY_HIGH; dcmi_Dma.Init.FIFOMode = DMA_FIFOMODE_ENABLE; dcmi_Dma.Init.FIFOThreshold =DMA_FIFO_THRESHOLD_FULL; dcmi_Dma.Init.MemBurst = DMA_PBURST_SINGLE; dcmi_Dma.Init.PeriphBurst = DMA_PBURST_SINGLE; HAL_DMA_Init(&dcmi_Dma); __DCMI_CLK_ENABLE(); dcmi.Instance = DCMI; dcmi.Init.ExtendedDataMode = DCMI_EXTEND_DATA_8B; dcmi.Init.CaptureRate = DCMI_CR_ALL_FRAME; dcmi.Init.VSPolarity = DCMI_VSPOLARITY_HIGH; dcmi.Init.HSPolarity = DCMI_HSPOLARITY_LOW; dcmi.Init.PCKPolarity = DCMI_PCKPOLARITY_RISING; dcmi.Init.SynchroMode = DCMI_SYNCHRO_HARDWARE; dcmi.DMA_Handle = &dcmi_Dma; HAL_DCMI_Init(&dcmi); __HAL_DCMI_ENABLE(&dcmi); HAL_DCMI_Start_DMA(&dcmi, DCMI_MODE_CONTINUOUS, (uint32_t)&frame_buffer,43500/2); }