Fix: No OpenDTU startup of CDC (like Pico or ESP32-S3) devices if no …

…usb host is connected Should also fix #826
hoylabs · May 3, 2023 · 65b728e · 65b728e
1 parent 7c80fe2
commit 65b728e
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/platformio.ini b/platformio.ini
@@ -213,4 +213,5 @@ build_flags = ${env.build_flags}
     -DCMT_GPIO2=3
     -DCMT_GPIO3=8
     -DCMT_SDIO=5
-    -DARDUINO_USB_MODE=1
+    -DARDUINO_USB_MODE=1
+    -DARDUINO_USB_CDC_ON_BOOT=1
diff --git a/src/main.cpp b/src/main.cpp
@@ -26,8 +26,13 @@ void setup()
 {
     // Initialize serial output
     Serial.begin(SERIAL_BAUDRATE);
+#if ARDUINO_USB_CDC_ON_BOOT
+    Serial.setTxTimeoutMs(0);
+    delay(100);
+#else
     while (!Serial)
         yield();
+#endif
     MessageOutput.println();
     MessageOutput.println("Starting OpenDTU");