Arduino Quick Start
APIs and example program for Air Quality sleep and wakeup functionality.
#include <M5Unified.h>#include <esp_sleep.h> void setup() { auto cfg = M5.config(); M5.begin(cfg); // Initialize display, buttons, RTC, etc. M5.Display.fillScreen(TFT_WHITE); M5.Display.setTextSize(2); M5.Display.setTextColor(TFT_BLACK); M5.Display.setTextDatum(middle_center); esp_sleep_wakeup_cause_t cause = esp_sleep_get_wakeup_cause(); int cx = M5.Display.width() / 2; int cy = M5.Display.height() / 2; if (cause == ESP_SLEEP_WAKEUP_TIMER) { M5.Display.drawString("Woken up!", cx, cy - 20); M5.Display.drawString("Press BtnA", cx, cy + 20); } else { M5.Display.drawString("Press BtnA", cx, cy - 20); M5.Display.drawString("to sleep 5s", cx, cy + 20); }} void loop() { M5.update(); // Refresh button state // Press BtnA to enter 5-second timed sleep if (M5.BtnA.wasPressed()) { int cx = M5.Display.width() / 2; int cy = M5.Display.height() / 2; M5.Display.fillScreen(TFT_WHITE); M5.Display.setTextDatum(middle_center); M5.Display.drawString("Sleeping...", cx, cy); delay(500); M5.Power.timerSleep(5); // Wake up after 5 seconds }}
After uploading, press the button to see the following effects:
The power section uses the Power_Class
from the M5Unified library. For more related APIs, refer to the following documentation: