你写一个代码,esp8266nodemcu与stm32串口通信,arduino编写
时间: 2024-03-10 09:51:08 浏览: 82
好的,以下是一个简单的Arduino代码示例,演示如何通过ESP8266 NodeMCU和STM32之间的串口进行通信。在这个例子中,ESP8266 NodeMCU将发送一个字符串到STM32,然后等待STM32的回复。STM32将接收ESP8266 NodeMCU发送的数据,并将其转换为大写字母后回复ESP8266 NodeMCU。
ESP8266 NodeMCU代码:
```
void setup() {
Serial.begin(9600); // 初始化串口
}
void loop() {
String message = "Hello STM32!"; // 要发送的消息
Serial.println(message); // 发送消息到STM32
delay(1000); // 延时1秒钟
while (Serial.available()) { // 等待STM32的回复
String response = Serial.readString(); // 读取STM32的回复
Serial.println("Received response from STM32: " + response); // 输出STM32的回复
}
}
```
STM32代码:
```
#include <string.h>
#include <ctype.h>
void USART1_IRQHandler(void)
{
if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) {
char received_char = (char)USART_ReceiveData(USART1); // 读取ESP8266 NodeMCU发送的数据
char uppercase_char = toupper(received_char); // 将接收到的数据转换为大写字母
USART_SendData(USART1, uppercase_char); // 将转换后的数据发送回ESP8266 NodeMCU
}
}
int main(void)
{
USART_InitTypeDef USART_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_1);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
USART_InitStructure.USART_BaudRate = 9600;
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(USART1, &USART_InitStructure);
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE);
while (1) {
}
}
```
请注意,这只是一个简单的示例代码,你需要根据你的具体需求进行修改和调整。同时,你也需要确保两个设备之间的波特率和其他串口设置是一致的。
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