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Author: ladyada

Adafruit_ESP32_Arduino_Demos/ESP32_sleeptest/.esp32.test.only

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+#include <Adafruit_NeoPixel.h>
+Adafruit_NeoPixel pixel(1, PIN_NEOPIXEL, NEO_GRB + NEO_KHZ800);
+
+
+void setup() {
+  Serial.begin(115200);
+
+  // Turn on any internal power switches for TFT, NeoPixels, I2C, etc!
+  enableInternalPower();
+
+  pixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
+  pixel.setBrightness(20); // not so bright
+}
+
+void loop() {
+  pixel.setPixelColor(0, 0xFFFFFF);
+  pixel.show();
+  delay(1000);
+  
+  disableInternalPower();
+  esp_sleep_enable_timer_wakeup(1000000); // 1 sec
+  esp_light_sleep_start();
+  // we'll wake from light sleep here
+
+  // wake up 1 second later and then go into deep sleep
+  esp_sleep_enable_timer_wakeup(1000000); // 1 sec
+  esp_deep_sleep_start(); 
+  // we never reach here
+}
+
+void enableInternalPower() {
+#if defined(ARDUINO_ADAFRUIT_QTPY_ESP32_PICO)
+  pinMode(NEOPIXEL_POWER, OUTPUT);
+  digitalWrite(NEOPIXEL_POWER, HIGH);
+#endif
+}
+
+void disableInternalPower() {
+#if defined(ARDUINO_ADAFRUIT_QTPY_ESP32_PICO)
+  pinMode(NEOPIXEL_POWER, OUTPUT);
+  digitalWrite(NEOPIXEL_POWER, LOW);
+#endif
+}