Hello…I’ve inserted code to force my XIAO ESP32S3 into deep sleep mode for 60 secs, followed by 30 secs of awake time. When I run this sketch, the sleep and awake intervals happen as expected, but the code I’ve included in void loop() does not appear to be executing. There are no volts or amps values displayed in serial monitor, nor on the screen of an Android app I created to connect to the ESP32 via Bluetooth LE. Note that the volts and amps display as expected in both serial monitor and in my mobile app when the sleep mode code is commented out. Does anyone have any suggestions for why this is happening?
#include <BLEDevice.h>
#include <BLEServer.h>
#include <BLEUtils.h>
#include <BLE2902.h>
#include <Adafruit_INA260.h>
#define uS_TO_S_FACTOR 1000000ULL // Conversion factor for micro seconds to seconds
#define TIME_TO_SLEEP 60 // Time ESP32 will go to sleep (in seconds)
#define WAKE_UP_TIME 30 // Time ESP32 will stay awake (in seconds)
Adafruit_INA260 ina260 = Adafruit_INA260();
BLEServer* pServer = NULL;
BLECharacteristic* pVoltsCharacteristic = NULL;
BLECharacteristic* pAmpsCharacteristic = NULL;
bool deviceConnected = false;
bool oldDeviceConnected = false;
// See the following for generating UUIDs:
// https://www.uuidgenerator.net/
static BLEUUID BLESERVICE_UUID("4fafc201-1fb5-459e-8fcc-c5c9c331914b");
#define VOLTS_CHARACTERISTIC_UUID "7dd120c3-5d28-4264-88f9-f62233315f45"
#define AMPS_CHARACTERISTIC_UUID "3e37576d-9603-4637-b7b7-1d703e113268"
class MyServerCallbacks : public BLEServerCallbacks {
void onConnect(BLEServer* pServer) {
deviceConnected = true;
}
void onDisconnect(BLEServer* pServer) {
deviceConnected = false;
}
};
void setup() {
Serial.begin(115200);
ina260.begin();
// Create the BLE Device
BLEDevice::init("XIAO ESP32S3");
// Create the BLE Server
pServer = BLEDevice::createServer();
pServer->setCallbacks(new MyServerCallbacks());
// Create the BLE Services
BLEService* pService = pServer->createService(BLESERVICE_UUID, 7, 0); // Can specify the number of characteristics (minimum 7)
// Create BLE Characteristics
pVoltsCharacteristic = pService->createCharacteristic(
VOLTS_CHARACTERISTIC_UUID,
BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY
);
pAmpsCharacteristic = pService->createCharacteristic(
AMPS_CHARACTERISTIC_UUID,
BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY
);
// Create BLE Descriptors
pVoltsCharacteristic->addDescriptor(new BLE2902());
pAmpsCharacteristic->addDescriptor(new BLE2902());
// Start the service
pService->start();
// Start advertising
BLEAdvertising* pAdvertising = BLEDevice::getAdvertising();
pAdvertising->addServiceUUID(BLESERVICE_UUID);
pAdvertising->setScanResponse(false);
pAdvertising->setMinPreferred(0x0); // Set value to 0x00 to not advertise this parameter
BLEDevice::startAdvertising();
// Sleep configuration
esp_sleep_enable_timer_wakeup(TIME_TO_SLEEP * uS_TO_S_FACTOR);
delay(WAKE_UP_TIME * 1000); // Delay for the specified wake-up time
Serial.flush();
esp_deep_sleep_start();
}
void loop() {
// notify changed value
float voltsValue = (ina260.readBusVoltage() / 1000);
float ampsValue = (ina260.readCurrent() / 1000);
Serial.println(voltsValue, 3);
Serial.println(ampsValue, 3);
if (deviceConnected) {
pVoltsCharacteristic->setValue(voltsValue);
pVoltsCharacteristic->notify();
pAmpsCharacteristic->setValue(ampsValue);
pAmpsCharacteristic->notify();
delay(2000); // Bluetooth stack will go into congestion if too many packets are sent
}
// Disconnecting
if (!deviceConnected && oldDeviceConnected) {
delay(500); // Give the Bluetooth stack the chance to get things ready
pServer->startAdvertising(); // Restart advertising
Serial.println("Start advertising...");
oldDeviceConnected = deviceConnected;
}
// Connecting
if (deviceConnected && !oldDeviceConnected) {
// Do stuff here on connecting
oldDeviceConnected = deviceConnected;
}
}
PJ