Add MeshCore relay_radio firmware for Heltec T114

variants/ikoka_handheld_nrf/IkokaNrf52Board.cpp

@@ -0,0 +1,40 @@
+#ifdef IKOKA_NRF52
+
+#include <Arduino.h>
+#include <Wire.h>
+
+#include "IkokaNrf52Board.h"
+
+void IkokaNrf52Board::begin() {
+  NRF52Board::begin();
+
+  // ensure we have pull ups on the screen i2c, this isn't always available
+  // in hardware and it should only be 20k ohms. Disable the pullups if we
+  // are using the rotated lcd breakout board
+  #if defined(DISPLAY_CLASS) && DISPLAY_ROTATION == 0
+    pinMode(PIN_WIRE_SDA, INPUT_PULLUP);
+    pinMode(PIN_WIRE_SCL, INPUT_PULLUP);
+  #endif
+
+  pinMode(PIN_VBAT, INPUT);
+  pinMode(VBAT_ENABLE, OUTPUT);
+  digitalWrite(VBAT_ENABLE, HIGH);
+
+  // required button pullup is handled as part of button initilization
+  // in target.cpp
+
+#if defined(PIN_WIRE_SDA) && defined(PIN_WIRE_SCL)
+  Wire.setPins(PIN_WIRE_SDA, PIN_WIRE_SCL);
+#endif
+
+  Wire.begin();
+
+#ifdef P_LORA_TX_LED
+  pinMode(P_LORA_TX_LED, OUTPUT);
+  digitalWrite(P_LORA_TX_LED, HIGH);
+#endif
+
+  delay(10); // give sx1262 some time to power up
+}
+
+#endif