[问答]

如何重复调用HAL_SPI_TxCpltCallback() DMA循环模式？

问答对人有帮助，内容完整，我也想知道答案 0 我想使用 SPI 仅传输主模式将移位寄存器（74HC595）与 STM32F103C8T6 MCU 连接起来。我需要连续写入移位寄存器，以便它不断更新 op 引脚。所以我将 SPI DMA 设置为循环模式，当传输完成时我需要提供锁存时钟，所以我使用 HAL_SPI_TxCpltCallback() 函数但它只在 HAL_SPI_Transmit_DMA() 调用时调用一次。如何重复调用 HAL_SPI_TxCpltCallback() DMA 循环模式？我的目标是在 while 循环外使用 DMA 不断更新 SHIFTREISTERs 引脚。 /* 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< } } 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 %drn", 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 */ } } 0
2022-12-13 08:32:07　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 41 个回答。邀请回答 chm5 该类别下有 39 个回答。邀请回答 hgimtk 该类别下有 33 个回答。邀请回答 HengDu 该类别下有 30 个回答。邀请回答 hwp0415229 该类别下有 28 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答可口可甜该类别下有 26 个回答。邀请回答 kingnet6688 该类别下有 26 个回答。邀请回答颜刚YanG 该类别下有 26 个回答。邀请回答 zyh34997 该类别下有 25 个回答。邀请回答柱子图宁该类别下有 25 个回答。邀请回答 jenny042 该类别下有 25 个回答。邀请回答 kingnet9999 该类别下有 25 个回答。邀请回答 andyfly7 该类别下有 25 个回答。邀请回答麻酱该类别下有 25 个回答。邀请回答成长的小师弟该类别下有 24 个回答。邀请回答 gXDhn 该类别下有 24 个回答。邀请回答 jiangwenwen 该类别下有 24 个回答。邀请回答哼小曲该类别下有 24 个回答。邀请回答举报吕珠峰相关推荐 • HAL库SPI DMA循环调用问题 13167 • 为什么同一个DMA在两个NUCLEO设备上表现不同呢？ 237 • 如何使用CubeMX生成的库对STM32H743 MCU进行编码？ 215 • 如何在DMA循环模式下保存SPI数据？ 364 • HAL库里关于stm32_hal_spi.h头文件里的几个函数不明白其用途 8537 • STM32L4 UART DMA TX回调未被调用是什么原因？如何解决？ 223 • 如何实现从DMA向SPI输出数据呢？有什么方法吗 161 • 在STM32L4S9AII6 MCU上通过DMA设置SPI通信失败是何原因 251 • HAL库SPI DMA的使用问题 6473 • SPI DMA循环缓冲区奇怪的位翻转是什么意思？ 164 1个回答

答案对人有帮助，有参考价值 0 hdma_spi1_tx.Init.Mode = DMA_NORMAL; 这是一次性转移。您需要 DMA_CIRCULAR 进行循环传输。

2022-12-13 10:10:43 评论举报张珍岚