Merge pull request #35 from pennam/flashing_fix

UNOR4USBBridge: disconnect WiFi in programming mode

Author: pennam

UNOR4USBBridge/UNOR4USBBridge.ino

@@ -220,6 +220,7 @@ void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id,
       case ARDUINO_USB_CDC_LINE_CODING_EVENT:
         auto baud = data->line_coding.bit_rate;
         if (baud == 1200) {
+          WiFi.disconnect();
           digitalWrite(GPIO_BOOT, HIGH);
           digitalWrite(GPIO_RST, LOW);
           delay(100);
@@ -229,6 +230,7 @@ void usbEventCallback(void* arg, esp_event_base_t event_base, int32_t event_id,
           delay(100);
           digitalWrite(GPIO_RST, HIGH);
         } else if (baud == 2400) {
+          WiFi.disconnect();
           digitalWrite(GPIO_BOOT, LOW);
           digitalWrite(GPIO_RST, HIGH);
           delay(100);