请通过使用RTC_DATA_ATTR属性来定义全局变量，将其存储在RTC内存中。例如，RTC_DATA_ATTR int myVar =...
For example, RTC_DATA_ATTR int myVar = 0; When the chip wakes up from deep sleep, it performs a reset and begins program execution from the beginning. When waking up from deep sleep, the ESP32 can run a deep sleep wake stub. It’s a piece of code that executes as soon as the ...
使用定时器唤醒的示例代码 #include<Arduino.h>#include<esp_sleep.h>RTC_DATA_ATTRintbootCount=0;voidsetup(){Serial.begin(115200);Serial.printf("ESP32 is restart now! It's the %d time\r\n",++bootCount);delay(5000);esp_sleep_enable_timer_wakeup(20000000);Serial.println(esp_sleep_get_wakeup...
RTC_DATA_ATTR int bootCount = 0; // RTC 内存上定义深度睡眠中唤醒的次数 bootCount // 唤醒原因 void print_wakeup_reason() { esp_sleep_wakeup_cause_t wakeup_reason; wakeup_reason = esp_sleep_get_wakeup_cause(); switch(wakeup_reason) { case ESP_SLEEP_WAKEUP_EXT0 : Serial.println("Wakeu...
RTC_DATA_ATTR 静态 time_t 最后; RTC_DATA_ATTR 静态 uint32_t 引导计数; 然后定义 BLE 广告类型。定义如下。 BLEAdvertising *pAdvertising; timeval被定义为访问当前时间的结构。 现在构造timeval; 还定义了 UUID。可以从此链接生成 UUID 。 #define BEACON_UUID "87b99b2c-9XXd-11e9-bXX2-526XXXX64f64"...
RTC_DATA_ATTR int bootCount = 0; /* Method to print the reason by which ESP32 has been awaken from sleep */ void print_wakeup_reason(){ esp_deep_sleep_wakeup_cause_t wakeup_reason; wakeup_reason = esp_deep_sleep_get_wakeup_cause(); ...
RTC_DATA_ATTRintbootCount=0; /* 方法:打印 ESP32 唤醒的原因 */ voidprint_wakeup_reason(){ esp_sleep_wakeup_cause_t wakeup_reason; wakeup_reason=esp_sleep_get_wakeup_cause(); switch(wakeup_reason) { caseESP_SLEEP_WAKEUP_EXT0:Serial.println("通过外部信号 RTC_IO 唤醒");break; ...
RTC Memory ESP32在进入DeepSleep时内存中所有的数据将无法保持,如果我们需要将某些数据进行存储的话使用RTC Memory是不错的选择。ESP32有快速和慢速两片RTC内存区域,各8K大小。对于我们用户引用来说用来存储数据主要用到慢速的RTC内存。 使用RTC_DATA_ATTR标记的数据将被放置在RTC内存中,比如RTC_DATA_ATTR int data...
但是,RTC内存保持通电状态。因此,它的内容在深度睡眠时被保存下来,在我们叫醒芯片后可以取回。这就是原因,该芯片在禁用Wi-Fi和蓝牙连接数据之前,会将其存储在RTC内存中。 因此,如果要在重新启动时使用数据,请通过定义具有RTC_DATA_ATTR属性的全局变量将其存储到RTC内存中。例如,RTC_DATA_ATTR int bootCount = 0...
RTC_DATA_ATTRintbootCount=0; /* Method to print the reason by which ESP32 has been awaken from sleep */ voidprint_wakeup_reason(){ esp_sleep_wakeup_cause_t wakeup_reason; wakeup_reason=esp_sleep_get_wakeup_cause(); switch(wakeup_reason) ...