ESP32 Nano reboot when Wi-Fi disconnects using Arduino InfluxDB Cloud example

InfluxDB 2
,
1

void IRAM_ATTR timer_1ms() {

timer_20ms++;

timer_100ms++;

if(timer_20ms / 20)

{

can_flag = true;

timer_20ms = 0;

}

if(timer_100ms / 5000)

{

DB_flag = true;

timer_100ms = 0;

}

}

void timer_Int() {

timer = timerBegin(0, 80, true);

timerAttachInterrupt(timer, &timer_1ms, true);

timerAlarmWrite(timer, 1000, true);

timerAlarmEnable(timer);

timer_flag = true;

}

void setup() {

Serial.begin(115200);

ESP32Can_Init();

WiFi_Init(WIFI_SSID, WIFI_PASSWORD);

timeSync(TZ_INFO, “pool.ntp.org”, “time.nis.gov”);

InfluxDB_Init(client, SN);

timer_Int();

}

void loop() {

if(DB_flag) {

DB_flag = false;

fuelcellsystem.clearFields();



point.addField("rssi", WiFi.RSSI());



Serial.print("Writing");

Serial.println(point.toLineProtocol());



if (!client.writePoint(point)) {

  Serial.print("InfluxDB write failed: ");

  Serial.println(client.getLastErrorMessage());

}

count++;

Serial.println(count);

}

if (wifiMulti.run() != WL_CONNECTED) {

Serial.println("Wifi connection lost");

timerAlarmDisable(timer);

timer_flag = false;



timer_20ms = 0;

timer_100ms = 0;

can_flag = false;

DB_flag = false;

}

else {

if(timer_flag == false) {

  timerAlarmEnable(timer);

  timer_flag = true;

}

}

}
I want to fix the issue where the ESP32 Nano reboots during client.writePoint(point) when the Wi-Fi connection is lost and then reconnected, typically after 2–3 write attempts