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这两天在玩STM32L0,但是串口怎么调试都有问题。数据位选择8B,显示如下:
数据位选择7B时: 而我的输出应该是:printf("123456n");printf("testingn"); 下面时我的程序: //时钟初始化 void SystemClockConfig( void ) { RCC_OscInitTypeDef RCC_OscInitStruct; RCC_ClkInitTypeDef RCC_ClkInitStruct; RCC_PeriphCLKInitTypeDef PeriphClkInit; __HAL_RCC_SYSCFG_CLK_ENABLE( ); __HAL_RCC_PWR_CLK_ENABLE( ); __HAL_PWR_VOLTAGESCALING_CONFIG( PWR_REGULATOR_VOLTAGE_SCALE1 ); // __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW); RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI | RCC_OSCILLATORTYPE_LSE;//内部高速时钟8M 和 外部低速32.768K RCC_OscInitStruct.HSIState = RCC_HSI_ON; RCC_OscInitStruct.LSEState = RCC_LSE_ON; RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; RCC_OscInitStruct.PLL.PLLMUL = RCC_PLLMUL_4; RCC_OscInitStruct.PLL.PLLDIV = RCC_PLLDIV_2; if( HAL_RCC_OscConfig( &RCC_OscInitStruct ) != HAL_OK ) { assert_param( FAIL ); } 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_DIV1; RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; if( HAL_RCC_ClockConfig( &RCC_ClkInitStruct, FLASH_LATENCY_1 ) != HAL_OK ) { assert_param( FAIL ); } PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1 | RCC_PERIPHCLK_I2C1 | RCC_PERIPHCLK_RTC; PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2; PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_PCLK1; PeriphClkInit.RTCClockSelection = RCC_RTCCLKSOURCE_LSE; if( HAL_RCCEx_PeriphCLKConfig( &PeriphClkInit ) != HAL_OK ) { assert_param( FAIL ); } HAL_SYSTICK_Config( HAL_RCC_GetHCLKFreq( ) / 1000 ); HAL_SYSTICK_CLKSourceConfig( SYSTICK_CLKSOURCE_HCLK ); // SysTick_IRQn interrupt configuration HAL_NVIC_SetPriority( SysTick_IRQn, 0, 0 ); } UART.C /****************************************************************************** * Copyright 2017-2030 DaPu Co. * FileName: uart_new.c * Desc: * * * Author: CGH * Date: 2017/10/12 * Notes: * * ----------------------------------------------------------------- * Histroy: v1.0 2017/10/12, CGH create this file * ******************************************************************************/ /*------------------------------- Includes ----------------------------------*/ #include "board.h" #include "uart_new.h" #include "gpio.h" #include "delay.h" /*------------------- Global Definitions and Declarations -------------------*/ /*------------------------ Constant / Macro Definitions ---------------------*/ /*------------------------- Type Declarations -------------------------------*/ /*------------------------- Function Prototype ------------------------------*/ /*------------------------- Variable Declarations ---------------------------*/ UART_HandleTypeDef husart_debug; uint8_t RxDatabuf; /*------------------------- Function Implement ------------------------------*/ /** * 函数功能: 串口硬件初始化配置 * 输入参数: huart:串口句柄类型指针 * 返 回 值: 无 * 说 明: 该函数被HAL库内部调用 */ void HAL_UART_MspInit(UART_HandleTypeDef* huart) { GPIO_InitTypeDef GPIO_InitStruct; Gpio_t TX,RX; if(huart->Instance==DEBUG_USARTx) { /* 串口外设时钟使能 */ DEBUG_USART_RCC_CLK_ENABLE(); DEBUG_USARTx_GPIO_ClK_ENABLE(); /* 串口外设功能GPIO配置 */ //GpioInit( &TX, UART_TX, PIN_ALTERNATE_FCT, PIN_PUSH_PULL, PIN_PULL_UP, GPIO_AF4_USART1 ); //GpioInit( &RX, UART_RX, PIN_INPUT, PIN_PUSH_PULL, PIN_PULL_UP, GPIO_AF4_USART1 ); GPIO_InitStruct.Pin = DEBUG_USARTx_Tx_GPIO_PIN; GPIO_InitStruct.Mode = GPIO_MODE_AF_PP; GPIO_InitStruct.Pull = GPIO_AF4_USART1; GPIO_InitStruct.Speed = GPIO_SPEED_HIGH; GPIO_InitStruct.Alternate = GPIO_AF4_USART1; HAL_GPIO_Init(DEBUG_USARTx_Tx_GPIO, &GPIO_InitStruct); GPIO_InitStruct.Pin = DEBUG_USARTx_Rx_GPIO_PIN; GPIO_InitStruct.Mode = GPIO_MODE_INPUT; //GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Alternate = GPIO_AF4_USART1; HAL_GPIO_Init(DEBUG_USARTx_Rx_GPIO, &GPIO_InitStruct); GpioWrite(&Led2,1); Delay(3); } } /** * 函数功能: 串口硬件反初始化配置 * 输入参数: huart:串口句柄类型指针 * 返 回 值: 无 * 说 明: 该函数被HAL库内部调用 */ void HAL_UART_MspDeInit(UART_HandleTypeDef* huart) { if(huart->Instance==DEBUG_USARTx) { /* 串口外设时钟禁用 */ DEBUG_USART_RCC_CLK_DISABLE(); /* 串口外设功能GPIO配置 */ HAL_GPIO_DeInit(DEBUG_USARTx_Tx_GPIO, DEBUG_USARTx_Tx_GPIO_PIN); HAL_GPIO_DeInit(DEBUG_USARTx_Rx_GPIO, DEBUG_USARTx_Rx_GPIO_PIN); /* 串口中断禁用 */ HAL_NVIC_DisableIRQ(DEBUG_USART_IRQn); } } /** * 函数功能: 串口参数配置. * 输入参数: 无 * 返 回 值: 无 * 说 明:无 */ void MX_DEBUG_USART_Init(void) { int ret = -1; __HAL_RCC_USART1_FORCE_RESET( ); __HAL_RCC_USART1_RELEASE_RESET( ); __HAL_RCC_USART1_CLK_ENABLE( ); /* 使能串口功能引脚GPIO时钟 */ DEBUG_USARTx_GPIO_ClK_ENABLE(); husart_debug.Instance = DEBUG_USARTx; husart_debug.Init.BaudRate = DEBUG_USARTx_BAUDRATE; husart_debug.Init.WordLength = UART_WORDLENGTH_8B; husart_debug.Init.StopBits = UART_STOPBITS_1; husart_debug.Init.Parity = UART_PARITY_NONE; husart_debug.Init.Mode = UART_MODE_TX_RX; husart_debug.Init.HwFlowCtl = UART_HWCONTROL_NONE; husart_debug.Init.OverSampling = UART_OVERSAMPLING_16; ret = HAL_UART_Init(&husart_debug); if(ret != HAL_OK) { GpioWrite(&Led2,0); } else { GpioWrite(&Led3,1); } /* 串口中断起用 */ HAL_NVIC_SetPriority( USART1_IRQn, 1, 0 ); HAL_NVIC_EnableIRQ( USART1_IRQn ); /* Enable the UART Data Register not empty Interrupt */ HAL_UART_Receive_IT( &husart_debug, &RxDatabuf, 1 ); } UART.H /****************************************************************************** * Copyright 2017-2030 DaPu Co. * FileName: uart_new.h * Desc: * * * Author: CGH * Date: 2017/10/12 * Notes: * * ----------------------------------------------------------------- * Histroy: v1.0 2017/10/12, CGH create this file * ******************************************************************************/ #ifndef UART_NEW_H #define UART_NEW_H /*------------------------------- Includes ----------------------------------*/ #include "stm32l0xx_hal.h" #include /*----------------------------- Global Defines ------------------------------*/ #define DEBUG_USARTx USART1 #define DEBUG_USARTx_BAUDRATE 9600 #define DEBUG_USART_RCC_CLK_ENABLE() __HAL_RCC_USART1_FORCE_RESET();\ __HAL_RCC_USART1_RELEASE_RESET();\ __HAL_RCC_USART1_CLK_ENABLE() #define DEBUG_USART_RCC_CLK_DISABLE() __HAL_RCC_USART1_CLK_DISABLE() #define DEBUG_USARTx_GPIO_ClK_ENABLE() __HAL_RCC_GPIOA_CLK_ENABLE() #define DEBUG_USARTx_Tx_GPIO_PIN GPIO_PIN_9 #define DEBUG_USARTx_Tx_GPIO GPIOA #define DEBUG_USARTx_Rx_GPIO_PIN GPIO_PIN_10 #define DEBUG_USARTx_Rx_GPIO GPIOA #define DEBUG_USART_IRQn USART1_IRQn /*----------------------------- Global Typedefs -----------------------------*/ /*----------------------------- External Variables --------------------------*/ extern UART_HandleTypeDef husart_debug; /*------------------------ Global Function Prototypes -----------------------*/ extern void MX_DEBUG_USART_Init(void); #endif |
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