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STM32N6570-DK MIPI CSI-2 D-PHY Camera Issue

Nian8113
Associate

‎2025-09-03 8:48 PM

Hello teams,

I tried to use STM32N6570-DK DCMIPP Pipe0 to read data from my camera that has own ISP. The camera output format is UYVY (YUV422 BPP16). The issue is that I can't get any data from DCMIPP and CSI-2 Host, I only received SOF and EOF events from CSI-2 Host. I've referred to other people's posts, but my issue still exists. Is my DCMIPP and CSI configuration wrong?

Additionally, I'm not sure if the CSI and DCMIPP clock is set correctly, I just follow the example. If my camera out is 640x480@60fps and format is UYVY, how should I configure this clock?

My settings are as follows.

static void MX_DCMIPP_Init(void)
{

	/* USER CODE BEGIN DCMIPP_Init 0 */

	/* USER CODE END DCMIPP_Init 0 */

	DCMIPP_CSI_PIPE_ConfTypeDef pCSI_PipeConfig = { 0 };
	DCMIPP_CSI_ConfTypeDef pCSI_Config = { 0 };
	DCMIPP_PipeConfTypeDef pPipeConfig = { 0 };

	/* USER CODE BEGIN DCMIPP_Init 1 */

	/* USER CODE END DCMIPP_Init 1 */
	hdcmipp.Instance = DCMIPP;
	if (HAL_DCMIPP_Init(&hdcmipp) != HAL_OK) {
		Error_Handler();
	}

	/** Pipe 0 Config
	 */
	pCSI_PipeConfig.DataTypeMode = DCMIPP_DTMODE_ALL;
	pCSI_PipeConfig.DataTypeIDA = DCMIPP_DT_YUV422_8;
	pCSI_PipeConfig.DataTypeIDB = DCMIPP_DT_YUV422_8;
	if (HAL_DCMIPP_CSI_PIPE_SetConfig(&hdcmipp, DCMIPP_PIPE0, &pCSI_PipeConfig)
	        != HAL_OK) {
		Error_Handler();
	}
	pCSI_Config.PHYBitrate = DCMIPP_CSI_PHY_BT_800;
	pCSI_Config.DataLaneMapping = DCMIPP_CSI_PHYSICAL_DATA_LANES;
	pCSI_Config.NumberOfLanes = DCMIPP_CSI_TWO_DATA_LANES;
	if (HAL_DCMIPP_CSI_SetConfig(&hdcmipp, &pCSI_Config) != HAL_OK) {
		Error_Handler();
	}
	pPipeConfig.FrameRate = DCMIPP_FRAME_RATE_ALL;
	pPipeConfig.PixelPipePitch = 10;
	pPipeConfig.PixelPackerFormat = DCMIPP_PIXEL_PACKER_FORMAT_YUV422_1;
	if (HAL_DCMIPP_PIPE_SetConfig(&hdcmipp, DCMIPP_PIPE0, &pPipeConfig)
	        != HAL_OK) {
		Error_Handler();
	}
	HAL_DCMIPP_CSI_SetVCConfig(&hdcmipp, 0U, DCMIPP_CSI_DT_BPP16);
	/* USER CODE BEGIN DCMIPP_Init 2 */

	/* USER CODE END DCMIPP_Init 2 */

}
void HAL_DCMIPP_MspInit(DCMIPP_HandleTypeDef *hdcmipp)
{
	RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = { 0 };
	if (hdcmipp->Instance == DCMIPP) {
		/* USER CODE BEGIN DCMIPP_MspInit 0 */
		RAMCFG_HandleTypeDef hramcfg = { 0 };
		RIMC_MasterConfig_t RIMC_master = { 0 };
		/* USER CODE END DCMIPP_MspInit 0 */

		/** Initializes the peripherals clock
		 */
		PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_DCMIPP
		        | RCC_PERIPHCLK_CSI;
		PeriphClkInitStruct.DcmippClockSelection = RCC_DCMIPPCLKSOURCE_IC17;
		PeriphClkInitStruct.ICSelection[RCC_IC17].ClockSelection =
		RCC_ICCLKSOURCE_PLL1;
		PeriphClkInitStruct.ICSelection[RCC_IC17].ClockDivider = 4;
		PeriphClkInitStruct.ICSelection[RCC_IC18].ClockSelection =
		RCC_ICCLKSOURCE_PLL1;
		PeriphClkInitStruct.ICSelection[RCC_IC18].ClockDivider = 60;
		if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) {
			Error_Handler();
		}

		/* Peripheral clock enable */
		__HAL_RCC_DCMIPP_CLK_ENABLE();
		__HAL_RCC_CSI_CLK_ENABLE();
		__HAL_RCC_CSI_FORCE_RESET();
		__HAL_RCC_CSI_RELEASE_RESET();
		/* DCMIPP interrupt Init */
		HAL_NVIC_SetPriority(DCMIPP_IRQn, 7, 0);
		HAL_NVIC_EnableIRQ(DCMIPP_IRQn);
		HAL_NVIC_SetPriority(CSI_IRQn, 7, 0);
		HAL_NVIC_EnableIRQ(CSI_IRQn);
		/* USER CODE BEGIN DCMIPP_MspInit 1 */
		GPIO_InitTypeDef GPIO_InitStruct = { 0 };
		__HAL_RCC_GPIOC_CLK_ENABLE();
		__HAL_RCC_GPIOD_CLK_ENABLE();
		/* CAM_NRST */
		GPIO_InitStruct.Pin = GPIO_PIN_8;
		GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		GPIO_InitStruct.Pull = GPIO_NOPULL;
		GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
		HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);

		/* CAM_PWR_EN */
		GPIO_InitStruct.Pin = GPIO_PIN_2;
		GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
		GPIO_InitStruct.Pull = GPIO_NOPULL;
		GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
		HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);

		HAL_GPIO_WritePin(GPIOC, GPIO_PIN_8, GPIO_PIN_RESET); /* Off *//* PC8  CAM_NRST */
		HAL_GPIO_WritePin(GPIOD, GPIO_PIN_2, GPIO_PIN_SET); /* Off *//* PD8  CAM_PWR_EN */

		/* SRAM3 and SRAM4 memories clock enable */
		LL_MEM_EnableClock(LL_MEM_AXISRAM3);
		LL_MEM_EnableClock(LL_MEM_AXISRAM4);

		/* Power On AXSRAM3 and AXISRAM4 */
		hramcfg.Instance = RAMCFG_SRAM3_AXI;
		HAL_RAMCFG_EnableAXISRAM(&hramcfg);

		hramcfg.Instance = RAMCFG_SRAM4_AXI;
		HAL_RAMCFG_EnableAXISRAM(&hramcfg);

		__HAL_RCC_RIFSC_CLK_ENABLE();

		RIMC_master.MasterCID = RIF_CID_1;
		RIMC_master.SecPriv = RIF_ATTRIBUTE_SEC | RIF_ATTRIBUTE_PRIV;

		HAL_RIF_RIMC_ConfigMasterAttributes(RIF_MASTER_INDEX_DCMIPP,
		        &RIMC_master);
		HAL_RIF_RISC_SetSlaveSecureAttributes(RIF_RISC_PERIPH_INDEX_DCMIPP,
		RIF_ATTRIBUTE_SEC | RIF_ATTRIBUTE_PRIV);
		/* USER CODE END DCMIPP_MspInit 1 */

	}

}
int main(void)
{

	......

	ret = Camera_Init();
	if (ret != 0) {
		printf("[  ERROR ] Camera init failed, error = %ld\n", ret);
		Error_Handler();
	}

	ret = HAL_DCMIPP_CSI_PIPE_Start(&hdcmipp, DCMIPP_PIPE0,
	DCMIPP_VIRTUAL_CHANNEL0, BUFFER_ADDRESS, DCMIPP_MODE_CONTINUOUS);
	if (ret != 0) {
		printf("[  ERROR ] DCMIPP PIPE0 start failed, error = %ld\n", ret);
		Error_Handler();
	}

	ret = Camera_Set_Format(FRAME_WIDTH, FRAME_HEIGHT);
	if (ret != 0) {
		printf("[  ERROR ] Camera set format, error = %ld\n", ret);
		Error_Handler();
	}

	......

}

There are some logs about DCMIPP and CSI state.

[ INFO ] DCMIPP state 2
[ INFO ] DCMIPP PIPE0 state 2
[ INFO ] DCMIPP error state 0x00000000
[ INFO ] DCMIPP_CMCR 0x00000001
[ INFO ] DCMIPP_CMFRCR 0x00000000
[ INFO ] DCMIPP_CMIER 0x00008620
[ INFO ] DCMIPP_CMSR1 0x00000003
[ INFO ] DCMIPP_CMSR2 0x00000000
[ INFO ] DCMIPP_P0FSCR 0x80030000
[ INFO ] DCMIPP_P0FCTCR 0x00000008
[ INFO ] DCMIPP_P0DCCNTR 0x00000000
[ INFO ] DCMIPP_P0PPCR 0x00000000
[ INFO ] DCMIPP_P0PPM0AR1 0x34200000
[ INFO ] DCMIPP_P0IER 0x00000000
[ INFO ] DCMIPP_P0SR 0x00000000
[ INFO ] DCMIPP_P0CFSCR 0x00030000
[ INFO ] DCMIPP_P0CFCTCR 0x00000008
[ INFO ] DCMIPP_P0CPPCR 0x00000000
[ INFO ] DCMIPP_P0CPPM0AR1 0x34200000
[ INFO ] CSI_CR 0x00000001
[ INFO ] CSI_PCR 0x0000000F
[ INFO ] CSI_IER0 0x58211100
[ INFO ] CSI_IER1 0x00001F1F
[ INFO ] CSI_SR0 0x06000000
[ INFO ] CSI_SR1 0xE4510000
[ INFO ] CSI_SPDFR 0x00000000
[ INFO ] CSI_ERR1 0x00000300
[ INFO ] CSI_ERR2 0x00000000
[ INFO ] CSI_PRCR 0x00000002
[ INFO ] CSI_PMCR 0x00000000
[ INFO ] CSI_PFCR 0x00010928

 

Thank you for your time and suggestions.

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Ch_JE
ST Employee

‎2025-09-08 8:18 AM

Hello,

For Pixel Packer format youshould use DCMIPP_PIXEL_PACKER_FORMAT_YUV422_1_UYVY for "UYVY"

For DCMIPP and CSI clock configuration please refer to the applications on DK:

STM32CubeN6/Projects/STM32N6570-DK/Applications/DCMIPP at main · STMicroelectronics/STM32CubeN6 · GitHub

Best Regards,

 

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