I have a code that mdma can access any variable feed to it by &var (AXI SRAM) also I have gave it an address of ADC common registers from APB1 but adress from APB2 &hrng.Instance.DR causes HAL_xfer_read_error. Any idea? I know in reference manual it told access to rng (random number generator) must to be single 32-bit. I've setted 4 byte data length with word data size. But I think maybe this is because of memory region.
And the code (this code runs well but change &buffy to &hrng.Instance->DR reproduce the problem):
/* USER CODE BEGIN Header */
/**
******************************************************************************
* @file : main.c
* @brief : Main program body
******************************************************************************
* @attention
*
* Copyright (c) 2022 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.
*
******************************************************************************
*/
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
RNG_HandleTypeDef hrng;
SAI_HandleTypeDef hsai_BlockA2;
SAI_HandleTypeDef hsai_BlockB2;
DMA_HandleTypeDef hdma_sai2_a;
DMA_HandleTypeDef hdma_sai2_b;
UART_HandleTypeDef huart1;
DMA_HandleTypeDef hdma_usart1_tx;
MDMA_HandleTypeDef hmdma_mdma_channel40_dma1_stream0_tc_0;
/* USER CODE BEGIN PV */
__IO uint32_t noise=10000;
__IO uint32_t buffy=0x10101010;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_DMA_Init(void);
static void MX_SAI2_Init(void);
static void MX_RNG_Init(void);
static void MX_USART1_UART_Init(void);
static void MX_MDMA_Init(void);
/* USER CODE BEGIN PFP */
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
/* USER CODE END 0 */
/**
* @brief The application entry point.
* @retval int
*/
int main(void)
{
/* USER CODE BEGIN 1 */
/* USER CODE END 1 */
/* MCU Configuration--------------------------------------------------------*/
/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
HAL_Init();
/* USER CODE BEGIN Init */
/* USER CODE END Init */
/* Configure the system clock */
SystemClock_Config();
/* USER CODE BEGIN SysInit */
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
MX_DMA_Init();
MX_SAI2_Init();
MX_RNG_Init();
MX_USART1_UART_Init();
MX_MDMA_Init();
/* USER CODE BEGIN 2 */
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
HAL_MDMA_Start_IT(&hmdma_mdma_channel40_dma1_stream0_tc_0,
&buffy,
&noise,
4,
1);
if(HAL_SAI_Transmit_DMA(&hsai_BlockA2, &noise, 1) != HAL_OK) // Generate noise
{/* Start Conversation Error */HAL_GPIO_TogglePin(LED_GPIO_Port,LED_Pin);Error_Handler();}
while (1)
{
HAL_Delay(400);
buffy=40;
HAL_Delay(400);
buffy=0x10101010;
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Supply configuration update enable
*/
HAL_PWREx_ConfigSupply(PWR_LDO_SUPPLY);
/** Configure the main internal regulator output voltage
*/
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_VOSRDY)) {}
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI48|RCC_OSCILLATORTYPE_CSI;
RCC_OscInitStruct.HSI48State = RCC_HSI48_ON;
RCC_OscInitStruct.CSIState = RCC_CSI_ON;
RCC_OscInitStruct.CSICalibrationValue = RCC_CSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_CSI;
RCC_OscInitStruct.PLL.PLLM = 1;
RCC_OscInitStruct.PLL.PLLN = 75;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 3;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB buses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief RNG Initialization Function
* @param None
* @retval None
*/
static void MX_RNG_Init(void)
{
/* USER CODE BEGIN RNG_Init 0 */
/* USER CODE END RNG_Init 0 */
/* USER CODE BEGIN RNG_Init 1 */
/* USER CODE END RNG_Init 1 */
hrng.Instance = RNG;
hrng.Init.ClockErrorDetection = RNG_CED_ENABLE;
if (HAL_RNG_Init(&hrng) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN RNG_Init 2 */
/* USER CODE END RNG_Init 2 */
}
/**
* @brief SAI2 Initialization Function
* @param None
* @retval None
*/
static void MX_SAI2_Init(void)
{
/* USER CODE BEGIN SAI2_Init 0 */
/* USER CODE END SAI2_Init 0 */
/* USER CODE BEGIN SAI2_Init 1 */
/* USER CODE END SAI2_Init 1 */
hsai_BlockA2.Instance = SAI2_Block_A;
hsai_BlockA2.Init.AudioMode = SAI_MODEMASTER_TX;
hsai_BlockA2.Init.Synchro = SAI_ASYNCHRONOUS;
hsai_BlockA2.Init.OutputDrive = SAI_OUTPUTDRIVE_ENABLE;
hsai_BlockA2.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
hsai_BlockA2.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
hsai_BlockA2.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_44K;
hsai_BlockA2.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
hsai_BlockA2.Init.MonoStereoMode = SAI_MONOMODE;
hsai_BlockA2.Init.CompandingMode = SAI_NOCOMPANDING;
hsai_BlockA2.Init.TriState = SAI_OUTPUT_NOTRELEASED;
if (HAL_SAI_InitProtocol(&hsai_BlockA2, SAI_I2S_STANDARD, SAI_PROTOCOL_DATASIZE_16BIT, 2) != HAL_OK)
{
Error_Handler();
}
hsai_BlockB2.Instance = SAI2_Block_B;
hsai_BlockB2.Init.AudioMode = SAI_MODEMASTER_RX;
hsai_BlockB2.Init.Synchro = SAI_ASYNCHRONOUS;
hsai_BlockB2.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;
hsai_BlockB2.Init.NoDivider = SAI_MASTERDIVIDER_ENABLE;
hsai_BlockB2.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_EMPTY;
hsai_BlockB2.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_44K;
hsai_BlockB2.Init.SynchroExt = SAI_SYNCEXT_DISABLE;
hsai_BlockB2.Init.MonoStereoMode = SAI_STEREOMODE;
hsai_BlockB2.Init.CompandingMode = SAI_NOCOMPANDING;
if (HAL_SAI_InitProtocol(&hsai_BlockB2, SAI_I2S_STANDARD, SAI_PROTOCOL_DATASIZE_16BIT, 2) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SAI2_Init 2 */
/* USER CODE END SAI2_Init 2 */
}
/**
* @brief USART1 Initialization Function
* @param None
* @retval None
*/
static void MX_USART1_UART_Init(void)
{
/* USER CODE BEGIN USART1_Init 0 */
/* USER CODE END USART1_Init 0 */
/* USER CODE BEGIN USART1_Init 1 */
/* USER CODE END USART1_Init 1 */
huart1.Instance = USART1;
huart1.Init.BaudRate = 1000000;
huart1.Init.WordLength = UART_WORDLENGTH_8B;
huart1.Init.StopBits = UART_STOPBITS_1;
huart1.Init.Parity = UART_PARITY_NONE;
huart1.Init.Mode = UART_MODE_TX;
huart1.Init.HwFlowCtl = UART_HWCONTROL_NONE;
huart1.Init.OverSampling = UART_OVERSAMPLING_16;
huart1.Init.OneBitSampling = UART_ONE_BIT_SAMPLE_DISABLE;
huart1.Init.ClockPrescaler = UART_PRESCALER_DIV1;
huart1.AdvancedInit.AdvFeatureInit = UART_ADVFEATURE_NO_INIT;
if (HAL_UART_Init(&huart1) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetTxFifoThreshold(&huart1, UART_TXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_SetRxFifoThreshold(&huart1, UART_RXFIFO_THRESHOLD_1_8) != HAL_OK)
{
Error_Handler();
}
if (HAL_UARTEx_DisableFifoMode(&huart1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN USART1_Init 2 */
/* USER CODE END USART1_Init 2 */
}
/**
* Enable DMA controller clock
*/
static void MX_DMA_Init(void)
{
/* DMA controller clock enable */
__HAL_RCC_DMA1_CLK_ENABLE();
/* DMA interrupt init */
/* DMA1_Stream1_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream1_IRQn);
/* DMA1_Stream3_IRQn interrupt configuration */
HAL_NVIC_SetPriority(DMA1_Stream3_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(DMA1_Stream3_IRQn);
}
/**
* Enable MDMA controller clock
* Configure MDMA for global transfers
* hmdma_mdma_channel40_dma1_stream0_tc_0
*/
static void MX_MDMA_Init(void)
{
/* MDMA controller clock enable */
__HAL_RCC_MDMA_CLK_ENABLE();
/* Local variables */
/* Configure MDMA channel MDMA_Channel0 */
/* Configure MDMA request hmdma_mdma_channel40_dma1_stream0_tc_0 on MDMA_Channel0 */
hmdma_mdma_channel40_dma1_stream0_tc_0.Instance = MDMA_Channel0;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.Request = MDMA_REQUEST_DMA1_Stream0_TC;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.TransferTriggerMode = MDMA_REPEAT_BLOCK_TRANSFER;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.Priority = MDMA_PRIORITY_LOW;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.Endianness = MDMA_LITTLE_ENDIANNESS_PRESERVE;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.SourceInc = MDMA_SRC_INC_DISABLE;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.DestinationInc = MDMA_DEST_INC_DISABLE;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.SourceDataSize = MDMA_SRC_DATASIZE_WORD;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.DestDataSize = MDMA_DEST_DATASIZE_WORD;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.DataAlignment = MDMA_DATAALIGN_RIGHT;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.BufferTransferLength = 4;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.SourceBurst = MDMA_SOURCE_BURST_SINGLE;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.DestBurst = MDMA_DEST_BURST_SINGLE;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.SourceBlockAddressOffset = 0;
hmdma_mdma_channel40_dma1_stream0_tc_0.Init.DestBlockAddressOffset = 0;
if (HAL_MDMA_Init(&hmdma_mdma_channel40_dma1_stream0_tc_0) != HAL_OK)
{
Error_Handler();
}
/* Configure post request address and data masks */
if (HAL_MDMA_ConfigPostRequestMask(&hmdma_mdma_channel40_dma1_stream0_tc_0, 0x40020008, 0x20) != HAL_OK)
{
Error_Handler();
}
/* MDMA interrupt initialization */
/* MDMA_IRQn interrupt configuration */
HAL_NVIC_SetPriority(MDMA_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(MDMA_IRQn);
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOE_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOB, LED_Pin|LED1_Pin, GPIO_PIN_SET);
/*Configure GPIO pins : Push_Pin Push1_Pin */
GPIO_InitStruct.Pin = Push_Pin|Push1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_PULLUP;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/*Configure GPIO pins : LED_Pin LED1_Pin */
GPIO_InitStruct.Pin = LED_Pin|LED1_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}
/* USER CODE BEGIN 4 */
/* USER CODE END 4 */
/**
* @brief This function is executed in case of error occurrence.
* @retval None
*/
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
__disable_irq();
while (1)
{
}
/* USER CODE END Error_Handler_Debug */
}
#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 CODE BEGIN 6 */
/* 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) */
/* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
