code-image-backup-public/fastbee
1
0
Fork 0
mirror of https://gitee.com/beecue/fastbee.git synced 2025-12-17 16:36:03 +08:00
Code Issues Packages Projects Releases Wiki Activity

初始版本

Browse Source
This commit is contained in:
yueming
2021-09-01 14:03:46 +08:00
parent 4e0dc1ed9d
commit 975adfb602
123 changed files with 59901 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

109
firmware/stm32-esp/user/drive/bsp_uart3.c Normal file
View File

@@ -0,0 +1,109 @@
#include "bsp_uart3.h"
// 串口3 PB10 TX PB11 RX
void BSP_UART3SendStr(char *ch){
uint16_t i = 0,j = 0;
j = strlen(ch);
for(i = 0;i < j;i++)
{
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)==RESET){};
USART_SendData(USART3,ch[i]);
}
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)==RESET);
}
// 发送数据
void BSP_UART3SendData(uint8_t *ch,uint16_t len){
uint16_t i = 0;
for(i = 0;i < len;i++)
{
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)==RESET){};
USART_SendData(USART3,ch[i]);
}
while(USART_GetFlagStatus(USART3,USART_FLAG_TC)==RESET);
}
void BSP_UART3Init(uint32_t bound){
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
//使能USART3,GPIOB
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
//USART3_TX GPIOB10
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//USART3_RX GPIOB11
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
//Usart3 NVIC 配置
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority= 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//USART 初始化设置
USART_InitStructure.USART_BaudRate = bound;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART3, &USART_InitStructure);
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启串口接受中断
USART_Cmd(USART3, ENABLE); //使能串口
}
// 读取USARTx->SR能避免莫名其妙的错误
uint8_t Usart3ReadBuf[60] = {0};
uint16_t Usart3ReadFlag = 0;
void USART3_IRQHandler(void)
{
uint8_t res = 0;
if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)
{
res = USART_ReceiveData(USART3);
// 是否存在数据没有处理
if( (Usart3ReadFlag&0x8000)==0 )
{
Usart3ReadBuf[Usart3ReadFlag] = res;
Usart3ReadFlag++;
if(Usart3ReadFlag>=59)
{
Usart3ReadFlag |= (1 << 15);
}
}
}
//溢出-如果发生溢出需要先读SR,再读DR寄存器则可清除不断入中断的问题
if( USART_GetFlagStatus(USART3,USART_FLAG_ORE)==SET )
{
USART_ReceiveData(USART3);
USART_ClearFlag(USART3,USART_FLAG_ORE);
}
USART_ClearFlag(USART3,USART_IT_RXNE);
}