// USART GPIO 引腳宏定義
#define DEBUG_USART_GPIO_CLK (RCC_APB2Periph_GPIOB)
#define DEBUG_USART_GPIO_APBxClkCmd RCC_APB2PeriphClockCmd
#define DEBUG_USART_TX_GPIO_PORT GPIOB
#define DEBUG_USART_TX_GPIO_PIN GPIO_Pin_10
#define DEBUG_USART_RX_GPIO_PORT GPIOB
#define DEBUG_USART_RX_GPIO_PIN GPIO_Pin_11
#define DEBUG_USART_IRQ USART3_IRQn
#define DEBUG_USART_IRQHandler USART3_IRQHandler
#elif DEBUG_USART4
//串口4-UART4
#define DEBUG_USARTx UART4
#define DEBUG_USART_CLK RCC_APB1Periph_UART4
#define DEBUG_USART_APBxClkCmd RCC_APB1PeriphClockCmd
#define DEBUG_USART_BAUDRATE 115200
// USART GPIO 引腳宏定義
#define DEBUG_USART_GPIO_CLK (RCC_APB2Periph_GPIOC)
#define DEBUG_USART_GPIO_APBxClkCmd RCC_APB2PeriphClockCmd
#define DEBUG_USART_TX_GPIO_PORT GPIOC
#define DEBUG_USART_TX_GPIO_PIN GPIO_Pin_10
#define DEBUG_USART_RX_GPIO_PORT GPIOC
#define DEBUG_USART_RX_GPIO_PIN GPIO_Pin_11
#define DEBUG_USART_IRQ UART4_IRQn
#define DEBUG_USART_IRQHandler UART4_IRQHandler
#elif DEBUG_USART5
//串口5-UART5
#define DEBUG_USARTx UART5
#define DEBUG_USART_CLK RCC_APB1Periph_UART5
#define DEBUG_USART_APBxClkCmd RCC_APB1PeriphClockCmd
#define DEBUG_USART_BAUDRATE 115200
// USART GPIO 引腳宏定義
#define DEBUG_USART_GPIO_CLK (RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD)
#define DEBUG_USART_GPIO_APBxClkCmd RCC_APB2PeriphClockCmd
#define DEBUG_USART_TX_GPIO_PORT GPIOC
#define DEBUG_USART_TX_GPIO_PIN GPIO_Pin_12
#define DEBUG_USART_RX_GPIO_PORT GPIOD
#define DEBUG_USART_RX_GPIO_PIN GPIO_Pin_2
#define DEBUG_USART_IRQ UART5_IRQn
#define DEBUG_USART_IRQHandler UART5_IRQHandler
#endif
void USART_Config(void);
void Usart_SendByte(USART_TypeDef* pUSARTx, uint8_t data);
void Usart_SendHalfWord(USART_TypeDef* pUSARTx, uint16_t data);
void Usart_SendArray(USART_TypeDef* pUSARTx, uint8_t *array,uint8_t num);
void Usart_SendStr(USART_TypeDef* pUSARTx, char *str);
#endif /* __BSP_USART_H */
psb_usart.c
#include 'psb_usart.h'
static void NVIC_Config(void)
{
NVIC_InitTypeDef NVIC_InitStruct;//中斷初始化結(jié)構(gòu)體
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);//先設(shè)組
NVIC_InitStruct.NVIC_IRQChannel = DEBUG_USART_IRQ;//中斷源
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority = 1;//主優(yōu)先級(jí)
NVIC_InitStruct.NVIC_IRQChannelSubPriority=7;//從優(yōu)先級(jí)
NVIC_InitStruct.NVIC_IRQChannelCmd= ENABLE; //中斷使能
NVIC_Init(&NVIC_InitStruct); //中斷初始化
}
void USART_Config(void)
{
//0.變量定義區(qū)
GPIO_InitTypeDef GPIO_InitStructure; //創(chuàng)建一個(gè)GPIO_InitTypeDef類型的數(shù)據(jù)
USART_InitTypeDef USART_InitStruct;//串口初始化結(jié)構(gòu)體
//1.配置GPIO
DEBUG_USART_GPIO_APBxClkCmd(DEBUG_USART_GPIO_CLK, ENABLE); //開啟時(shí)鐘
// 將USART Tx的GPIO配置為推挽復(fù)用模式
GPIO_InitStructure.GPIO_Pin = DEBUG_USART_TX_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(DEBUG_USART_TX_GPIO_PORT, &GPIO_InitStructure);
// 將USART Rx的GPIO配置為浮空輸入模式
GPIO_InitStructure.GPIO_Pin = DEBUG_USART_RX_GPIO_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(DEBUG_USART_RX_GPIO_PORT, &GPIO_InitStructure);
//2.初始化串口
DEBUG_USART_APBxClkCmd(RCC_APB2Periph_USART1,ENABLE);
USART_InitStruct.USART_BaudRate = DEBUG_USART_BAUDRATE; //波特率
USART_InitStruct.USART_WordLength = USART_WordLength_8b;//8位數(shù)據(jù)為
USART_InitStruct.USART_StopBits = USART_StopBits_1; //停止位1
USART_InitStruct.USART_Parity = USART_Parity_No; //無(wú)奇偶校驗(yàn)
USART_InitStruct.USART_Mode = USART_Mode_Rx | USART_Mode_Tx; //發(fā)送接收都使能
USART_InitStruct.USART_HardwareFlowControl = USART_HardwareFlowControl_None; //無(wú)硬件流
USART_Init(USART1, &USART_InitStruct);//初始化串口
//3.中斷配置
NVIC_Config();
// 使能串口接收中斷
USART_ITConfig(DEBUG_USARTx, USART_IT_RXNE, ENABLE);
//4. 使能串口
USART_Cmd(DEBUG_USARTx, ENABLE);
}
/*----------------------------------------------------------------------*/
//5. 編寫發(fā)送函數(shù)
//發(fā)送一個(gè)字節(jié)
void Usart_SendByte(USART_TypeDef* USARTx,uint8_t data)
{
USART_SendData(USARTx, data);
while(USART_GetFlagStatus(USARTx, USART_FLAG_TXE)==RESET);
}
//發(fā)送兩個(gè)字節(jié)
void Usart_SendHalfWord(USART_TypeDef* USARTx,uint16_t data)
{
uint8_t tempH, tempL;
tempL = data & 0xFF;
tempH = (data>>8) & 0xFF;
Usart_SendByte(USARTx,tempH);
Usart_SendByte(USARTx,tempL);
}
//發(fā)送一個(gè)數(shù)組
void Usart_SendArray(USART_TypeDef* USARTx,uint8_t *array, uint8_t num)
{
uint8_t i;
for(i=0;i Usart_SendByte(USARTx,*array++); } while(USART_GetFlagStatus(USARTx, USART_FLAG_TC)==RESET); } //發(fā)送一個(gè)字符串 void Usart_SendStr(USART_TypeDef* pUSARTx, char *str) { uint8_t i=0; do { Usart_SendByte(pUSARTx, *(str+i)); i++; }while(*(str+i) != '