STM32L0 HAL 串口问题

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("123456\n");printf("testing\n");

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* ******************************************************************************/#ifndefUART_NEW_H#defineUART_NEW_H/*------------------------------- Includes ----------------------------------*/#include "stm32l0xx_hal.h"#include <stdio.h>/*----------------------------- 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

希望各路兄台帮忙看看！！！感谢不尽！