uart唤醒esp32cam的示例代码
时间: 2023-09-08 09:08:20 浏览: 122
以下是一个基于ESP-IDF的示例代码,用于使用UART唤醒ESP32-CAM:
```c
#include "driver/uart.h"
#include "esp_sleep.h"
#define UART_NUM UART_NUM_0
void app_main()
{
uart_config_t uart_config = {
.baud_rate = 115200,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE
};
uart_param_config(UART_NUM, &uart_config);
uart_set_pin(UART_NUM, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE);
esp_sleep_enable_uart_wakeup();
while (1) {
// 深度睡眠
esp_deep_sleep_start();
}
}
```
在这个示例代码中,我们首先配置了UART的参数,然后开启了UART唤醒功能。在主循环中,我们进入深度睡眠状态,等待UART唤醒信号的到来。当收到UART信号时,ESP32-CAM将会被唤醒并从深度睡眠状态中恢复。
阅读全文