[dev] R1 Neo: disable buzzer

variants/muziworks_r1_neo/R1NeoBoard.cpp

@@ -47,8 +47,8 @@ void R1NeoBoard::begin() {
   // button is active high and passed through from I/O controller
   pinMode(PIN_USER_BTN, INPUT);
 
-  pinMode(PIN_BUZZER, OUTPUT);
+  pinMode(3, OUTPUT);  // buzzer drive pin (P0.03) - pull low to avoid power draw, beeper is disabled
-  digitalWrite(PIN_BUZZER, LOW);
+  digitalWrite(3, LOW);
 
   // battery pins
   pinMode(PIN_BAT_CHG, INPUT);

variants/muziworks_r1_neo/platformio.ini

@@ -13,7 +13,6 @@ build_flags = ${nrf52_base.build_flags}
   -D LORA_TX_POWER=22
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
-  -D PIN_BUZZER=3
   -D PIN_USER_BTN=26
   -D USER_BTN_PRESSED=HIGH
   -D PIN_GPS_TX=25

variants/muziworks_r1_neo/variant.h

@@ -94,7 +94,7 @@ extern "C"
 #define PIN_USER_BTN (26)
 
 /* Buzzer */
-#define PIN_BUZZER    (3)
+// #define PIN_BUZZER    (3) // Disabled: beeper is undesirable on this device
 
 /* Analog pins */
 // Arduino makes me angry