STM32F051K8U6控制esp8266用STM32CubeMX编写详细代码,不用esp8266库函数,并输出到uart1中
时间: 2024-02-28 14:52:09 浏览: 74
好的,以下是使用STM32F051K8U6控制esp8266的详细代码,并将esp8266的响应输出到UART1中。
1. 首先,请确保您已经在STM32CubeMX中配置了正确的引脚,以便将STM32F051K8U6的串口连接到esp8266。在本例中,我们将使用PA2和PA3作为TX和RX引脚,PB6和PB7作为TX和RX引脚。此外,还需要在STM32CubeMX中启用USART2和USART1。
2. 接下来,请编写代码以初始化USART2和USART1,将其配置为与esp8266进行通信和输出响应。以下是示例初始化代码:
```c
RCC->APB1ENR |= RCC_APB1ENR_USART2EN; // enable USART2 clock
RCC->APB2ENR |= RCC_APB2ENR_USART1EN; // enable USART1 clock
GPIOA->MODER |= GPIO_MODER_MODE2_1 | GPIO_MODER_MODE3_1; // set PA2 and PA3 to alternate function mode
GPIOA->AFR[0] |= (1 << GPIO_AFRL_AFSEL2_Pos) | (1 << GPIO_AFRL_AFSEL3_Pos); // set PA2 and PA3 to AF1
GPIOB->MODER |= GPIO_MODER_MODE6_1 | GPIO_MODER_MODE7_1; // set PB6 and PB7 to alternate function mode
GPIOB->AFR[0] |= (1 << GPIO_AFRL_AFSEL6_Pos) | (1 << GPIO_AFRL_AFSEL7_Pos); // set PB6 and PB7 to AF1
USART2->BRR = 16000000 / 115200; // set USART2 baud rate to 115200
USART1->BRR = 16000000 / 115200; // set USART1 baud rate to 115200
USART2->CR1 |= USART_CR1_TE | USART_CR1_RE | USART_CR1_UE; // enable transmitter, receiver, and USART2
USART1->CR1 |= USART_CR1_TE | USART_CR1_RE | USART_CR1_UE; // enable transmitter, receiver, and USART1
```
3. 接下来,请编写代码以发送AT指令并读取模块的响应。以下是示例代码:
```c
void send_at_command(char* command) {
char response[100];
int response_index = 0;
int response_length = 0;
// send command
while (*command != 0) {
USART2->TDR = *command++;
while (!(USART2->ISR & USART_ISR_TXE));
}
// read response
while (1) {
while (!(USART2->ISR & USART_ISR_RXNE));
char c = USART2->RDR;
response[response_index++] = c;
if (c == '\n' && response[response_index-2] == '\r') {
response_length = response_index;
break;
}
}
// process response
USART1->TDR = '\r';
USART1->TDR = '\n';
for (int i = 0; i < response_length; i++) {
USART1->TDR = response[i];
while (!(USART1->ISR & USART_ISR_TXE));
}
USART1->TDR = '\r';
USART1->TDR = '\n';
}
```
4. 最后,请根据需要编写代码,以处理esp8266发送的数据并将其发送到其他设备。这可能涉及到使用Wi-Fi连接到其他设备,或将数据存储在本地文件系统中。以下是示例代码:
```c
void process_data_from_esp8266() {
// read data from esp8266
// ...
// send data to other device
// ...
}
```
请注意,以上代码仅供参考,并可能需要进行适当的修改以适应您的具体应用程序。此外,还应该考虑添加错误检查和处理代码,以确保代码在出现问题时能够正确地处理异常情况。
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