Add MeshCore relay_radio firmware for Heltec T114

variants/lilygo_techo_card/TechoCardBoard.cpp

@@ -0,0 +1,97 @@
+#include <Arduino.h>
+#include <Wire.h>
+
+
+#include "TechoCardBoard.h"
+
+#ifdef LILYGO_TECHO_CARD
+
+Adafruit_NeoPixel Led_A(1, WS2812_DATA_2, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel Led_B(1, WS2812_DATA_3, NEO_GRB + NEO_KHZ800);
+Adafruit_NeoPixel Led_C(1, WS2812_DATA_1, NEO_GRB + NEO_KHZ800);
+
+Adafruit_NeoPixel *Led[] =
+    {
+        &Led_A,
+        &Led_B,
+        &Led_C,
+};
+
+
+void TechoCardBoard::begin() {
+    NRF52BoardDCDC::begin();
+    Wire.begin();
+
+    for (uint8_t i = 0; i < sizeof(Led) / sizeof(Led[0]); i++)
+    {
+        Led[i]->begin();
+        delay(3); // allow the LEDs to initialise, otherwise they can get stuck
+        Led[i]->setPixelColor(0, Led[i]->Color(0, 0, 0));
+        Led[i]->show();
+    }
+    
+    // put IMU20948 to sleep
+    // see https://product.tdk.com/system/files/dam/doc/product/sensor/mortion-inertial/imu/data_sheet/ds-000189-icm-20948-v1.5.pdf
+    Wire.beginTransmission(0x68);
+    Wire.write(0x06);   // PWR_MGMT_1 register
+    Wire.write(0x40);   // set SLEEP bit
+    Wire.endTransmission();
+
+}
+
+uint16_t TechoCardBoard::getBattMilliVolts() {
+  int adcvalue = 0;
+
+  analogReference(AR_INTERNAL_3_0);
+  analogReadResolution(12);
+  
+  digitalWrite(PIN_BAT_CTL, HIGH); // enable vbat vdiv
+  delay(10);
+
+  // ADC range is 0..3000mV and resolution is 12-bit (0..4095)
+  adcvalue = analogRead(PIN_VBAT_READ);
+  digitalWrite(PIN_BAT_CTL, LOW);
+
+  // Convert the raw value to compensated mv, taking the resistor-
+  // divider into account (providing the actual LIPO voltage)
+  return (uint16_t)((float)adcvalue * REAL_VBAT_MV_PER_LSB);
+}
+
+void TechoCardBoard::onBeforeTransmit() {
+    Led_A.setPixelColor(0, 20, 20, 20);   // turn TX LED on
+    Led_A.show();
+}
+
+void TechoCardBoard::onAfterTransmit() {
+    Led_A.setPixelColor(0, 0, 0, 0);   // turn TX LED off
+    Led_A.show();
+}
+
+void TechoCardBoard::toggleTorch() {
+    if (!_torchStatus) {
+        Led_C.setPixelColor(0, 255, 255, 255);
+        Led_C.show();
+        _torchStatus = true;
+    } else {
+        Led_C.setPixelColor(0, 0, 0, 0);
+        Led_C.show();
+        _torchStatus = false;
+        }
+}
+
+void TechoCardBoard::turnOffLeds() {
+    for (uint8_t i = 0; i < sizeof(Led) / sizeof(*Led); i++)
+    {
+        Led[i]->setPixelColor(0, 0, 0, 0);
+        Led[i]->show();
+    }
+}
+
+void TechoCardBoard::powerOff() {
+  nrf_gpio_cfg_sense_input(BUTTON_PIN, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
+  turnOffLeds();
+  digitalWrite(PIN_PWR_EN, LOW);
+  sd_power_system_off();
+}
+
+#endif