add heltec_v4 board.

9 months ago · 669bea04a0
8 changed files with 555 additions and 1 deletions
--- a/boards/heltec_v4.json
+++ b/boards/heltec_v4.json
@ -0,0 +1,43 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "esp32s3_out.ld",
+      "partitions": "default_16MB.csv",
+      "memory_type": "qio_qspi"
+      },
+    "core": "esp32",
+    "extra_flags": [
+      "-DBOARD_HAS_PSRAM",
+      "-DARDUINO_USB_CDC_ON_BOOT=1",
+      "-DARDUINO_USB_MODE=0",
+      "-DARDUINO_RUNNING_CORE=1",
+      "-DARDUINO_EVENT_RUNNING_CORE=1"
+    ],
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "psram_type": "qspi",
+    "hwids": [["0x303A", "0x1001"]],
+    "mcu": "esp32s3",
+    "variant": "heltec_v4"
+  },
+  "connectivity": ["wifi", "bluetooth", "lora"],
+  "debug": {
+    "default_tool": "esp-builtin",
+    "onboard_tools": ["esp-builtin"],
+    "openocd_target": "esp32s3.cfg"
+  },
+  "frameworks": ["arduino", "espidf"],
+  "name": "heltec_wifi_lora_32 v4 (16 MB FLASH, 2 MB PSRAM)",
+  "upload": {
+    "flash_size": "16MB",
+    "maximum_ram_size": 2097152,
+    "maximum_size": 16777216,
+    "use_1200bps_touch": true,
+    "wait_for_upload_port": true,
+    "require_upload_port": true,
+    "speed": 921600
+  },
+  "url": "https://heltec.org/",
+  "vendor": "heltec"
+}
--- a/src/helpers/sensors/EnvironmentSensorManager.cpp
+++ b/src/helpers/sensors/EnvironmentSensorManager.cpp
@ -433,8 +433,19 @@ void EnvironmentSensorManager::initBasicGPS() {
  // Try to detect if GPS is physically connected to determine if we should expose the setting
  #ifdef PIN_GPS_EN
    pinMode(PIN_GPS_EN, OUTPUT);
+  #ifdef PIN_GPS_EN_ACTIVE
+    digitalWrite(PIN_GPS_EN, PIN_GPS_EN_ACTIVE);   // Power on GPS
+  #else
    digitalWrite(PIN_GPS_EN, HIGH);   // Power on GPS
  #endif
+  #endif
+
+#ifdef PIN_GPS_RESET
+    pinMode(PIN_GPS_RESET, OUTPUT);
+    digitalWrite(PIN_GPS_RESET, PIN_GPS_RESET_ACTIVE); // assert for 10ms
+    delay(10);
+    digitalWrite(PIN_GPS_RESET, !PIN_GPS_RESET_ACTIVE);
+#endif

  #ifndef PIN_GPS_EN
    MESH_DEBUG_PRINTLN("No GPS wake/reset pin found for this board. Continuing on...");
@ -456,8 +467,12 @@ void EnvironmentSensorManager::initBasicGPS() {
    MESH_DEBUG_PRINTLN("No GPS detected");
  }
  #ifdef PIN_GPS_EN
+  #ifdef PIN_GPS_EN_ACTIVE
+    digitalWrite(PIN_GPS_EN, !PIN_GPS_EN_ACTIVE);  
+  #else
    digitalWrite(PIN_GPS_EN, LOW);  // Power off GPS until the setting is changed
  #endif
+  #endif
  gps_active = false; //Set GPS visibility off until setting is changed
 }

@ -542,9 +557,23 @@ void EnvironmentSensorManager::start_gps() {
  #endif
  #ifdef PIN_GPS_EN
    pinMode(PIN_GPS_EN, OUTPUT);
+  #ifdef PIN_GPS_EN_ACTIVE
+    digitalWrite(PIN_GPS_EN, PIN_GPS_EN_ACTIVE);  
+  #else
    digitalWrite(PIN_GPS_EN, HIGH);
+  #endif
+  #ifndef PIN_GPS_RESET
    return;
  #endif
+  #endif
+
+#ifdef PIN_GPS_RESET
+    pinMode(PIN_GPS_RESET, OUTPUT);
+    digitalWrite(PIN_GPS_RESET, PIN_GPS_RESET_ACTIVE); // assert for 10ms
+    delay(10);
+    digitalWrite(PIN_GPS_RESET, !PIN_GPS_RESET_ACTIVE);
+    return;
+#endif

  MESH_DEBUG_PRINTLN("Start GPS is N/A on this board. Actual GPS state unchanged");
 }
@ -558,8 +587,12 @@ void EnvironmentSensorManager::stop_gps() {
  #endif
  #ifdef PIN_GPS_EN
    pinMode(PIN_GPS_EN, OUTPUT);
+  #ifdef PIN_GPS_EN_ACTIVE
+    digitalWrite(PIN_GPS_EN, !PIN_GPS_EN_ACTIVE);  
+  #else
    digitalWrite(PIN_GPS_EN, LOW);
-    return;
+  #endif   
+  return;
  #endif

  MESH_DEBUG_PRINTLN("Stop GPS is N/A on this board. Actual GPS state unchanged");
--- a/variants/heltec_v4/HeltecV4Board.cpp
+++ b/variants/heltec_v4/HeltecV4Board.cpp
@ -0,0 +1,90 @@
+#include "HeltecV4Board.h"
+
+void HeltecV4Board::begin() {
+    ESP32Board::begin();
+
+
+    pinMode(PIN_ADC_CTRL, OUTPUT);
+    digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
+
+    pinMode(P_LORA_PA_POWER, OUTPUT);
+    digitalWrite(P_LORA_PA_POWER,HIGH);
+
+    rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
+    pinMode(P_LORA_PA_EN, OUTPUT);
+    digitalWrite(P_LORA_PA_EN,HIGH);
+    pinMode(P_LORA_PA_TX_EN, OUTPUT);
+    digitalWrite(P_LORA_PA_TX_EN,LOW);
+
+
+    periph_power.begin();
+
+    esp_reset_reason_t reason = esp_reset_reason();
+    if (reason == ESP_RST_DEEPSLEEP) {
+      long wakeup_source = esp_sleep_get_ext1_wakeup_status();
+      if (wakeup_source & (1 << P_LORA_DIO_1)) {  // received a LoRa packet (while in deep sleep)
+        startup_reason = BD_STARTUP_RX_PACKET;
+      }
+
+      rtc_gpio_hold_dis((gpio_num_t)P_LORA_NSS);
+      rtc_gpio_deinit((gpio_num_t)P_LORA_DIO_1);
+    }
+  }
+
+  void HeltecV4Board::onBeforeTransmit(void) {
+    digitalWrite(P_LORA_TX_LED, HIGH);   // turn TX LED on
+    digitalWrite(P_LORA_PA_TX_EN,HIGH);
+  }
+
+  void HeltecV4Board::onAfterTransmit(void) {
+    digitalWrite(P_LORA_TX_LED, LOW);   // turn TX LED off
+    digitalWrite(P_LORA_PA_TX_EN,LOW);
+  }
+
+  void HeltecV4Board::enterDeepSleep(uint32_t secs, int pin_wake_btn) {
+    esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
+
+    // Make sure the DIO1 and NSS GPIOs are hold on required levels during deep sleep
+    rtc_gpio_set_direction((gpio_num_t)P_LORA_DIO_1, RTC_GPIO_MODE_INPUT_ONLY);
+    rtc_gpio_pulldown_en((gpio_num_t)P_LORA_DIO_1);
+
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_NSS);
+
+    rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN); //It also needs to be enabled in receive mode
+
+    if (pin_wake_btn < 0) {
+      esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet
+    } else {
+      esp_sleep_enable_ext1_wakeup( (1L << P_LORA_DIO_1) | (1L << pin_wake_btn), ESP_EXT1_WAKEUP_ANY_HIGH);  // wake up on: recv LoRa packet OR wake btn
+    }
+
+    if (secs > 0) {
+      esp_sleep_enable_timer_wakeup(secs * 1000000);
+    }
+
+    // Finally set ESP32 into sleep
+    esp_deep_sleep_start();   // CPU halts here and never returns!
+  }
+
+  void HeltecV4Board::powerOff()  {
+    enterDeepSleep(0);
+  }
+
+  uint16_t HeltecV4Board::getBattMilliVolts()  {
+    analogReadResolution(10);
+    digitalWrite(PIN_ADC_CTRL, HIGH);
+    delay(10);
+    uint32_t raw = 0;
+    for (int i = 0; i < 8; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / 8;
+
+    digitalWrite(PIN_ADC_CTRL, LOW);
+
+    return (5.42 * (3.3 / 1024.0) * raw) * 1000;
+  }
+
+  const char* HeltecV4Board::getManufacturerName() const {
+    return "Heltec V4";
+  }
--- a/variants/heltec_v4/HeltecV4Board.h
+++ b/variants/heltec_v4/HeltecV4Board.h
@ -0,0 +1,23 @@
+#pragma once
+
+#include <Arduino.h>
+#include <helpers/RefCountedDigitalPin.h>
+#include <helpers/ESP32Board.h>
+#include <driver/rtc_io.h>
+
+class HeltecV4Board : public ESP32Board {
+
+public:
+  RefCountedDigitalPin periph_power;
+
+  HeltecV4Board() : periph_power(PIN_VEXT_EN,PIN_VEXT_EN_ACTIVE) { }
+
+  void begin();
+  void onBeforeTransmit(void) override;
+  void onAfterTransmit(void) override;
+  void enterDeepSleep(uint32_t secs, int pin_wake_btn = -1);
+  void powerOff() override;
+  uint16_t getBattMilliVolts() override;
+  const char* getManufacturerName() const override ;
+
+};
--- a/variants/heltec_v4/pins_arduino.h
+++ b/variants/heltec_v4/pins_arduino.h
@ -0,0 +1,67 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+static const uint8_t LED_BUILTIN = 35;
+#define BUILTIN_LED  LED_BUILTIN // backward compatibility
+#define LED_BUILTIN LED_BUILTIN  // allow testing #ifdef LED_BUILTIN
+
+static const uint8_t TX = 43;
+static const uint8_t RX = 44;
+
+static const uint8_t SDA = 3;
+static const uint8_t SCL = 4;
+
+static const uint8_t SS    = 8;
+static const uint8_t MOSI  = 10;
+static const uint8_t MISO  = 11;
+static const uint8_t SCK   = 9;
+
+static const uint8_t A0 = 1;
+static const uint8_t A1 = 2;
+static const uint8_t A2 = 3;
+static const uint8_t A3 = 4;
+static const uint8_t A4 = 5;
+static const uint8_t A5 = 6;
+static const uint8_t A6 = 7;
+static const uint8_t A7 = 8;
+static const uint8_t A8 = 9;
+static const uint8_t A9 = 10;
+static const uint8_t A10 = 11;
+static const uint8_t A11 = 12;
+static const uint8_t A12 = 13;
+static const uint8_t A13 = 14;
+static const uint8_t A14 = 15;
+static const uint8_t A15 = 16;
+static const uint8_t A16 = 17;
+static const uint8_t A17 = 18;
+static const uint8_t A18 = 19;
+static const uint8_t A19 = 20;
+
+static const uint8_t T1 = 1;
+static const uint8_t T2 = 2;
+static const uint8_t T3 = 3;
+static const uint8_t T4 = 4;
+static const uint8_t T5 = 5;
+static const uint8_t T6 = 6;
+static const uint8_t T7 = 7;
+static const uint8_t T8 = 8;
+static const uint8_t T9 = 9;
+static const uint8_t T10 = 10;
+static const uint8_t T11 = 11;
+static const uint8_t T12 = 12;
+static const uint8_t T13 = 13;
+static const uint8_t T14 = 14;
+
+static const uint8_t Vext = 36;
+static const uint8_t LED  = 35;
+static const uint8_t RST_OLED = 21;
+static const uint8_t SCL_OLED = 18;
+static const uint8_t SDA_OLED = 17;
+
+static const uint8_t RST_LoRa = 12;
+static const uint8_t BUSY_LoRa = 13;
+static const uint8_t DIO0 = 14;
+
+#endif /* Pins_Arduino_h */
--- a/variants/heltec_v4/platformio.ini
+++ b/variants/heltec_v4/platformio.ini
@ -0,0 +1,208 @@
+[Heltec_lora32_v4]
+extends = esp32_base
+board = heltec_v4
+build_flags =
+  ${esp32_base.build_flags}
+  ${sensor_base.build_flags}
+  -I variants/heltec_v4
+  -D HELTEC_LORA_V4
+  -D ESP32_CPU_FREQ=80
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D P_LORA_TX_LED=35
+  -D P_LORA_DIO_1=14
+  -D P_LORA_NSS=8
+  -D P_LORA_RESET=12
+  -D P_LORA_BUSY=13
+  -D P_LORA_SCLK=9
+  -D P_LORA_MISO=11
+  -D P_LORA_MOSI=10
+  -D P_LORA_PA_POWER=7   ;power en
+  -D P_LORA_PA_EN=2
+  -D P_LORA_PA_TX_EN=46  ;enable tx
+  -D PIN_BOARD_SDA=17
+  -D PIN_BOARD_SCL=18
+  -D PIN_USER_BTN=0
+  -D PIN_VEXT_EN=36
+  -D PIN_VEXT_EN_ACTIVE=HIGH
+  -D LORA_TX_POWER=10 ;If it is configured as 10 here, the final output will be 22 dbm.
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_CURRENT_LIMIT=140
+  -D SX126X_RX_BOOSTED_GAIN=1
+  -D PIN_GPS_RX=38
+  -D PIN_GPS_TX=39
+  -D PIN_GPS_RESET=42
+  -D PIN_GPS_RESET_ACTIVE=LOW
+  -D PIN_GPS_EN=34
+  -D PIN_GPS_EN_ACTIVE=LOW
+  -D ENV_INCLUDE_GPS=1
+  -D PIN_ADC_CTRL=37
+  -D PIN_VBAT_READ=1
+build_src_filter = ${esp32_base.build_src_filter}
+  +<../variants/heltec_v4>
+  +<helpers/sensors>
+lib_deps =
+  ${esp32_base.lib_deps}
+  ${sensor_base.lib_deps}
+
+[env:heltec_v4_repeater]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -D DISPLAY_CLASS=SSD1306Display
+  -D ADVERT_NAME='"Heltec Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<../examples/simple_repeater>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  ${esp32_ota.lib_deps}
+  bakercp/CRC32 @ ^2.0.0
+
+[env:heltec_v4_repeater_bridge_espnow]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -D DISPLAY_CLASS=SSD1306Display
+  -D ADVERT_NAME='"ESPNow Bridge"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=8
+  -D WITH_ESPNOW_BRIDGE=1
+  -D WITH_ESPNOW_BRIDGE_SECRET='"shared-secret"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/bridges/ESPNowBridge.cpp>
+  +<helpers/ui/SSD1306Display.cpp>
+  +<../examples/simple_repeater>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:heltec_v4_room_server]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -D DISPLAY_CLASS=SSD1306Display
+  -D ADVERT_NAME='"Heltec Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<../examples/simple_room_server>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:heltec_v4_terminal_chat]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -D MAX_CONTACTS=300
+  -D MAX_GROUP_CHANNELS=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:heltec_v4_companion_radio_usb]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=300
+  -D MAX_GROUP_CHANNELS=8
+  -D DISPLAY_CLASS=SSD1306Display
+; NOTE: DO NOT ENABLE -->  -D MESH_PACKET_LOGGING=1
+; NOTE: DO NOT ENABLE -->  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:heltec_v4_companion_radio_ble]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=300
+  -D MAX_GROUP_CHANNELS=8
+  -D DISPLAY_CLASS=SSD1306Display
+  -D BLE_PIN_CODE=123456   ; dynamic, random PIN
+  -D AUTO_SHUTDOWN_MILLIVOLTS=3400
+  -D BLE_DEBUG_LOGGING=1
+  -D OFFLINE_QUEUE_SIZE=256
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<helpers/esp32/*.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:heltec_v4_companion_radio_wifi]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -I examples/companion_radio/ui-new
+  -D MAX_CONTACTS=300
+  -D MAX_GROUP_CHANNELS=8
+  -D DISPLAY_CLASS=SSD1306Display
+  -D WIFI_DEBUG_LOGGING=1
+  -D WIFI_SSID='"myssid"'
+  -D WIFI_PWD='"mypwd"'
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<helpers/ui/MomentaryButton.cpp>
+  +<helpers/esp32/*.cpp>
+  +<../examples/companion_radio/*.cpp>
+  +<../examples/companion_radio/ui-new/*.cpp>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:heltec_v4_sensor]
+extends = Heltec_lora32_v4
+build_flags =
+  ${Heltec_lora32_v4.build_flags}
+  -D ADVERT_NAME='"Heltec v3 Sensor"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ENV_PIN_SDA=3
+  -D ENV_PIN_SCL=4
+  -D DISPLAY_CLASS=SSD1306Display
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_lora32_v4.build_src_filter}
+  +<helpers/ui/SSD1306Display.cpp>
+  +<../examples/simple_sensor>
+lib_deps =
+  ${Heltec_lora32_v4.lib_deps}
+  ${esp32_ota.lib_deps}
--- a/variants/heltec_v4/target.cpp
+++ b/variants/heltec_v4/target.cpp
@ -0,0 +1,60 @@
+#include <Arduino.h>
+#include "target.h"
+
+HeltecV4Board board;
+
+#if defined(P_LORA_SCLK)
+  static SPIClass spi;
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
+#else
+  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
+#endif
+
+WRAPPER_CLASS radio_driver(radio, board);
+
+ESP32RTCClock fallback_clock;
+AutoDiscoverRTCClock rtc_clock(fallback_clock);
+
+#if ENV_INCLUDE_GPS
+  #include <helpers/sensors/MicroNMEALocationProvider.h>
+  MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1);
+  EnvironmentSensorManager sensors = EnvironmentSensorManager(nmea);
+#else
+  EnvironmentSensorManager sensors;
+#endif
+
+#ifdef DISPLAY_CLASS
+  DISPLAY_CLASS display;
+  MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
+#endif
+
+bool radio_init() {
+  fallback_clock.begin();
+  rtc_clock.begin(Wire);
+  
+#if defined(P_LORA_SCLK)
+  return radio.std_init(&spi);
+#else
+  return radio.std_init();
+#endif
+}
+
+uint32_t radio_get_rng_seed() {
+  return radio.random(0x7FFFFFFF);
+}
+
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
+  radio.setFrequency(freq);
+  radio.setSpreadingFactor(sf);
+  radio.setBandwidth(bw);
+  radio.setCodingRate(cr);
+}
+
+void radio_set_tx_power(uint8_t dbm) {
+  radio.setOutputPower(dbm);
+}
+
+mesh::LocalIdentity radio_new_identity() {
+  RadioNoiseListener rng(radio);
+  return mesh::LocalIdentity(&rng);  // create new random identity
+}
--- a/variants/heltec_v4/target.h
+++ b/variants/heltec_v4/target.h
@ -0,0 +1,30 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include <HeltecV4Board.h>
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/AutoDiscoverRTCClock.h>
+#include <helpers/SensorManager.h>
+#include <helpers/sensors/EnvironmentSensorManager.h>
+#ifdef DISPLAY_CLASS
+  #include <helpers/ui/SSD1306Display.h>
+  #include <helpers/ui/MomentaryButton.h>
+#endif
+
+extern HeltecV4Board board;
+extern WRAPPER_CLASS radio_driver;
+extern AutoDiscoverRTCClock rtc_clock;
+extern EnvironmentSensorManager sensors;
+
+#ifdef DISPLAY_CLASS
+  extern DISPLAY_CLASS display;
+  extern MomentaryButton user_btn;
+#endif
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();