esp32 esp_timer_get_time 过多久回到0 esp32 时间 1. 之前的尝试(失败的尝试) 咸鱼买了3块ESP32开发板。背面写了NODEMCU v1.1,好像这玩意可以直接写lua,也可以刷Micropython写python,还可以用Arduino IDE写c。我想直接用官方库写C。 和乐鑫的这块开发板(ESP32-DevKitC)外观还挺像的(外观和引脚),可以参考这...
#include "esp_timer.h" void measure_important_function(void) { const unsigned MEASUREMENTS = 5000; uint64_t start = esp_timer_get_time(); uint64_t retries = 0; while(retries < MEASUREMENTS) { important_function(); retires++; } uint64_t end = esp_timer_get_time(); printf("%u iter...
int64_t time_since_boot = esp_timer_get_time(); printf("heartBeat timer called, time since boot: %lld us", time_since_boot); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32...
void test_timer_periodic_cb(void*arg) { int64_t tick=esp_timer_get_time(); printf("方法回调名字: %s , 距离定时器开启时间间隔 = %lld\r\n", __func__, tick);if(tick>100000000) {//停止定时器工作,并获取是否停止成功esp_err_t err=esp_timer_stop(test_p_handle); printf("要停止的定...
esp_timer 还提供了一个便捷函数 esp_timer_get_time() 以获取自启动以来经过的时间,可精确到微秒。这个函数通常会在 app_main 函数即将被调用前,返回自 esp_timer 启动以来的微秒数。 不同于 gettimeofday 函数,esp_timer_get_time() 返回的值: 芯片从 Deep-sleep 中唤醒后,从零开始 没有应用时区...
ds18b20_write_byte(GETTEMP); unsigned long start = esp_timer_get_time() / 1000ULL; while (!isConversionComplete() && ((esp_timer_get_time() / 1000ULL) - start < millisToWaitForConversion())) vPortYield(); } bool isConversionComplete() { uint8_t b = ds18b20_read(); return (b ...
以下软件定时器接口位于esp_timer/include/esp_timer.h。 2.1 esp_timer_init 2.2 esp_timer_deinit 2.3 esp_timer_create 2.4 esp_timer_start_once 2.5 esp_timer_start_periodic 2.6 esp_timer_stop 2.7 esp_timer_delete 2.8 esp_timer_get_time ...
#include<soc/rtc.h>voidsetup(){ Serial.begin(115200); Serial.printf("rtc_time: %d", rtc_time_get()); Serial.flush(); esp_sleep_enable_timer_wakeup(5000000ULL); esp_deep_sleep_start(); }voidloop(){} cyberman54 Posts:27 Joined:Sun Jan 14, 2018 7:47 pm ...
DHT11_Init(DHT11_GPIO);while(1){if(DHT11_StartGet(&temp, &hum)){ ESP_LOGI(TAG,"[%lld] temp->%i.%i C hum->%i%%", esp_timer_get_time(), temp /10, temp %10, hum); } vTaskDelay(500/portTICK_PERIOD_MS); } }
I am looking for a way to get the time since boot with nanoseconds precision. Currently, the best I can do is esp_timer_get_time() which returns time with microsecond precision. I connected my board to an oscilloscope and found out that it takes around 1.29 us for the esp_timer_get_...