Solved
SPI Transmit in DMA circular mode not call Tx_complete_callback?
i want to interface shift register(74HC595) with STM32F103C8T6 MCU using SPI Transmit only master mode.
I need to continuously write shift register so it is continuously update op pins. so i set SPI DMA in circular mode and when transmit complete i need to give latch clock so i use HAL_SPI_TxCpltCallback() function but it is only call once when HAL_SPI_Transmit_DMA() call.
how can call HAL_SPI_TxCpltCallback() repetitively DMA circular mode?
my goal is to continuously update SHIFTREISTERs pins using DMA outside while loop.
/* 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"
#include "dma.h"
#include "spi.h"
#include "gpio.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdbool.h"
/* USER CODE END Includes */
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
#define NO_OF_OP 8
/* USER CODE END PD */
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
/* USER CODE END PM */
/* Private variables ---------------------------------------------------------*/
/* USER CODE BEGIN PV */
bool OP[NO_OF_OP];
uint8_t data = 0;
/* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi)
{
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_RESET);
}
void write_to_reg(){
HAL_GPIO_WritePin(LATCH_CLOCK_GPIO_Port,LATCH_CLOCK_Pin,GPIO_PIN_RESET);
for (int x = NO_OF_OP-1; x >= 0; x--) {
HAL_GPIO_WritePin(A_GPIO_Port,A_Pin,OP[x]);
//delay_us(10);
HAL_GPIO_WritePin(SHIFT_CLK_GPIO_Port,SHIFT_CLK_Pin,GPIO_PIN_RESET);
//delay_us(50);
HAL_GPIO_WritePin(SHIFT_CLK_GPIO_Port,SHIFT_CLK_Pin,GPIO_PIN_SET);
}
HAL_GPIO_WritePin(LATCH_CLOCK_GPIO_Port,LATCH_CLOCK_Pin,GPIO_PIN_SET);
//delay_us(100);
HAL_GPIO_WritePin(LATCH_CLOCK_GPIO_Port,LATCH_CLOCK_Pin,GPIO_PIN_RESET);
}
/* USER CODE END PFP */
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
uint8_t bit_to_byte(bool *bitarray){
uint8_t byt = 0x00;
for (uint8_t j = 0; j < 8; ++j) {
if (bitarray[j]) {
byt = byt | (1<<j);
}
}
return byt;
}
/* 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_SPI1_Init();
/* USER CODE BEGIN 2 */
HAL_GPIO_WritePin(OE_GPIO_Port,OE_Pin,GPIO_PIN_RESET);
HAL_GPIO_WritePin(ENABLE_GPIO_Port, ENABLE_Pin, GPIO_PIN_RESET);
HAL_SPI_Transmit_DMA(&hspi1, &data, 1);
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
while (1)
{
/* USER CODE END WHILE */
/* USER CODE BEGIN 3 */
OP[0] = true;
OP[1] = true;
OP[2] = true;
OP[3] = true;
OP[4] = false;
OP[5] = false;
OP[6] = false;
OP[7] = false;
data = bit_to_byte(OP);
/**
HAL_SPI_Transmit_DMA(&hspi1,&data,1);
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_RESET);
**/
HAL_Delay(100);
OP[0] = false;
OP[1] = false;
OP[2] = false;
OP[3] = false;
OP[4] = true;
OP[5] = true;
OP[6] = true;
OP[7] = true;
data = bit_to_byte(OP);
/**
HAL_SPI_Transmit_DMA(&hspi1,&data,1);
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_SET);
HAL_GPIO_WritePin(L_CLK_GPIO_Port, L_CLK_Pin, GPIO_PIN_RESET);
**/
HAL_Delay(100);
}
/* USER CODE END 3 */
}
/**
* @brief System Clock Configuration
* @retval None
*/
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the RCC Oscillators according to the specified parameters
* in the RCC_OscInitTypeDef structure.
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
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_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
/** Enables the Clock Security System
*/
HAL_RCC_EnableCSS();
}
/* 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 */
void MX_SPI1_Init(void)
{
/* USER CODE BEGIN SPI1_Init 0 */
/* USER CODE END SPI1_Init 0 */
/* USER CODE BEGIN SPI1_Init 1 */
/* USER CODE END SPI1_Init 1 */
hspi1.Instance = SPI1;
hspi1.Init.Mode = SPI_MODE_MASTER;
hspi1.Init.Direction = SPI_DIRECTION_2LINES;
hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi1.Init.NSS = SPI_NSS_SOFT;
hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_4;
hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi1.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi1) != HAL_OK)
{
Error_Handler();
}
/* USER CODE BEGIN SPI1_Init 2 */
/* USER CODE END SPI1_Init 2 */
}
void HAL_SPI_MspInit(SPI_HandleTypeDef* spiHandle)
{
GPIO_InitTypeDef GPIO_InitStruct = {0};
if(spiHandle->Instance==SPI1)
{
/* USER CODE BEGIN SPI1_MspInit 0 */
/* USER CODE END SPI1_MspInit 0 */
/* SPI1 clock enable */
__HAL_RCC_SPI1_CLK_ENABLE();
__HAL_RCC_GPIOA_CLK_ENABLE();
/**SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA7 ------> SPI1_MOSI
*/
GPIO_InitStruct.Pin = GPIO_PIN_5|GPIO_PIN_7;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
/* SPI1 DMA Init */
/* SPI1_TX Init */
hdma_spi1_tx.Instance = DMA1_Channel3;
hdma_spi1_tx.Init.Direction = DMA_MEMORY_TO_PERIPH;
hdma_spi1_tx.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_spi1_tx.Init.MemInc = DMA_MINC_ENABLE;
hdma_spi1_tx.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
hdma_spi1_tx.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
hdma_spi1_tx.Init.Mode = DMA_NORMAL;
hdma_spi1_tx.Init.Priority = DMA_PRIORITY_MEDIUM;
if (HAL_DMA_Init(&hdma_spi1_tx) != HAL_OK)
{
Error_Handler();
}
__HAL_LINKDMA(spiHandle,hdmatx,hdma_spi1_tx);
/* USER CODE BEGIN SPI1_MspInit 1 */
/* USER CODE END SPI1_MspInit 1 */
}
}
