added test

src/main.cpp

@@ -2,6 +2,7 @@
 #include <Wire.h>
 
 #include "PCA9685.h"
+#include <GDBStub.h>
 
 #define ESP12_LED 2
 #define NODEMCU_LED 16
@@ -178,7 +179,9 @@ void setup_pwm_pca9685() {
 }
 
 void setup() {
-  Serial.begin(115200);
+  Serial.begin(460800);
+  gdbstub_init();
+
   Serial.println(F("Booting ...."));
 
   pinMode(NODEMCU_LED, OUTPUT);