Heltec v4: Add cli command to toggle gpio48

src/helpers/CommonCLI.cpp

@@ -264,6 +264,15 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
     } else if (memcmp(command, "clear stats", 11) == 0) {
       _callbacks->clearStats();
       strcpy(reply, "(OK - stats reset)");
+    #ifdef PIN_GPIO
+    } else if (memcmp(command, "gpio 1", 6) == 0) {
+        digitalWrite(PIN_GPIO, HIGH);
+        strcpy(reply, "(OK - gpio HIGH)");
+    } else if (memcmp(command, "gpio 0", 6) == 0) {
+        digitalWrite(PIN_GPIO, LOW);   
+        strcpy(reply, "(OK - gpio LOW)");
+
+    #endif
     /*
      * GET commands
      */

variants/heltec_v4/HeltecV4Board.cpp

@@ -16,6 +16,10 @@ void HeltecV4Board::begin() {
     pinMode(P_LORA_PA_TX_EN, OUTPUT);
     digitalWrite(P_LORA_PA_TX_EN,LOW);
 
+    #ifdef PIN_GPIO
+    pinMode(PIN_GPIO, OUTPUT);
+    digitalWrite(PIN_GPIO, LOW);
+    #endif
 
     periph_power.begin();
 

variants/heltec_v4/platformio.ini

@@ -40,6 +40,7 @@ build_flags =
   -D ENV_INCLUDE_GPS=1
   -D PIN_ADC_CTRL=37
   -D PIN_VBAT_READ=1
+  -D PIN_GPIO=48
 build_src_filter = ${esp32_base.build_src_filter}
   +<../variants/heltec_v4>
   +<helpers/sensors>