add tower v2 PA control

variants/heltec_tower_v2/HeltecTowerV2Board.cpp

@@ -19,6 +19,7 @@ void HeltecTowerV2Board::initiateShutdown(uint8_t reason) {
   digitalWrite(PIN_GPS_STANDBY, LOW);
   pinMode(PIN_GPS_RESET, OUTPUT);
   digitalWrite(PIN_GPS_RESET, GPS_RESET_MODE);
+  loRaFEMControl.setSleepModeEnable();
 
   bool enable_lpcomp = (reason == SHUTDOWN_REASON_LOW_VOLTAGE ||
                         reason == SHUTDOWN_REASON_BOOT_PROTECT);
@@ -37,10 +38,8 @@ void HeltecTowerV2Board::initiateShutdown(uint8_t reason) {
 void HeltecTowerV2Board::begin() {
   NRF52Board::begin();
 
-#ifdef P_LORA_TX_LED
   pinMode(P_LORA_TX_LED, OUTPUT);
   digitalWrite(P_LORA_TX_LED, !LED_STATE_ON);
-#endif
 
   pinMode(PIN_BAT_CTL, OUTPUT);
   digitalWrite(PIN_BAT_CTL, LOW);
@@ -58,17 +57,18 @@ void HeltecTowerV2Board::begin() {
   digitalWrite(PIN_GPS_RESET, GPS_RESET_MODE);
   pinMode(PIN_GPS_STANDBY, OUTPUT);
   digitalWrite(PIN_GPS_STANDBY, HIGH);
+  loRaFEMControl.init();
 }
 
-#ifdef P_LORA_TX_LED
 void HeltecTowerV2Board::onBeforeTransmit() {
   digitalWrite(P_LORA_TX_LED, LED_STATE_ON);
+  loRaFEMControl.setTxModeEnable();
 }
 
 void HeltecTowerV2Board::onAfterTransmit() {
   digitalWrite(P_LORA_TX_LED, !LED_STATE_ON);
+  loRaFEMControl.setRxModeEnable();
 }
-#endif
 
 uint16_t HeltecTowerV2Board::getBattMilliVolts() {
   analogReadResolution(12);
@@ -95,6 +95,7 @@ void HeltecTowerV2Board::powerOff() {
   digitalWrite(PIN_GPS_STANDBY, LOW);
   pinMode(PIN_GPS_RESET, OUTPUT);
   digitalWrite(PIN_GPS_RESET, GPS_RESET_MODE);
+  loRaFEMControl.setSleepModeEnable();
   pinMode(PIN_BAT_CTL, OUTPUT);
   digitalWrite(PIN_BAT_CTL, LOW);
   variant_shutdown();

variants/heltec_tower_v2/HeltecTowerV2Board.h

@@ -3,6 +3,7 @@
 #include <Arduino.h>
 #include <MeshCore.h>
 #include <helpers/NRF52Board.h>
+#include "LoRaFEMControl.h"
 
 class HeltecTowerV2Board : public NRF52BoardDCDC {
 protected:
@@ -11,12 +12,12 @@ protected:
 #endif
 
 public:
+  LoRaFEMControl loRaFEMControl;
+
   HeltecTowerV2Board() : NRF52Board("TOWER_V2_OTA") {}
   void begin();
-#ifdef P_LORA_TX_LED
   void onBeforeTransmit() override;
   void onAfterTransmit() override;
-#endif
   uint16_t getBattMilliVolts() override;
   const char* getManufacturerName() const override;
   void powerOff() override;

variants/heltec_tower_v2/LoRaFEMControl.cpp

@@ -0,0 +1,40 @@
+#include "LoRaFEMControl.h"
+
+#include <Arduino.h>
+#include "variant.h"
+
+static void enableFEMPower() {
+  bool wasOff = digitalRead(LORA_KCT8103L_EN) != HIGH;
+  digitalWrite(LORA_KCT8103L_EN, HIGH);
+  if (wasOff) {
+    delay(5);
+  }
+}
+
+void LoRaFEMControl::init() {
+  pinMode(LORA_KCT8103L_EN, OUTPUT);
+  digitalWrite(LORA_KCT8103L_EN, HIGH);
+  delay(1);
+  pinMode(LORA_KCT8103L_TX_RX, OUTPUT);
+  digitalWrite(LORA_KCT8103L_TX_RX, LOW);
+}
+
+void LoRaFEMControl::setSleepModeEnable() {
+  pinMode(LORA_KCT8103L_EN, OUTPUT);
+  digitalWrite(LORA_KCT8103L_EN, LOW);
+}
+
+void LoRaFEMControl::setTxModeEnable() {
+  enableFEMPower();
+  digitalWrite(LORA_KCT8103L_TX_RX, HIGH);
+}
+
+void LoRaFEMControl::setRxModeEnable() {
+  enableFEMPower();
+  digitalWrite(LORA_KCT8103L_TX_RX, LOW);
+}
+
+void LoRaFEMControl::setRxModeEnableWhenMCUSleep() {
+  enableFEMPower();
+  digitalWrite(LORA_KCT8103L_TX_RX, LOW);
+}

variants/heltec_tower_v2/LoRaFEMControl.h

@@ -0,0 +1,13 @@
+#pragma once
+
+class LoRaFEMControl {
+public:
+  LoRaFEMControl() {}
+  virtual ~LoRaFEMControl() {}
+
+  void init();
+  void setSleepModeEnable();
+  void setTxModeEnable();
+  void setRxModeEnable();
+  void setRxModeEnableWhenMCUSleep();
+};

variants/heltec_tower_v2/platformio.ini

@@ -11,7 +11,7 @@ build_flags = ${nrf52_base.build_flags}
   -D NRF52_POWER_MANAGEMENT
   -D RADIO_CLASS=CustomSX1262
   -D WRAPPER_CLASS=CustomSX1262Wrapper
-  -D LORA_TX_POWER=22
+  -D LORA_TX_POWER=12
   -D SX126X_CURRENT_LIMIT=140
   -D SX126X_RX_BOOSTED_GAIN=1
 build_src_filter = ${nrf52_base.build_src_filter}

variants/heltec_tower_v2/variant.cpp

@@ -19,7 +19,22 @@ void initVariant()
 
 void variant_shutdown()
 {
+  nrf_gpio_cfg_default(PIN_GPS_EN);
   nrf_gpio_cfg_default(PIN_GPS_PPS);
+  nrf_gpio_cfg_default(PIN_GPS_RESET);
+  nrf_gpio_cfg_default(PIN_GPS_STANDBY);
+  nrf_gpio_cfg_default(GPS_RX_PIN);
+  nrf_gpio_cfg_default(GPS_TX_PIN);
+  nrf_gpio_cfg_default(LORA_KCT8103L_TX_RX);
+  nrf_gpio_cfg_default(RF_PA_DETECT_PIN);
+  nrf_gpio_cfg_default(SX126X_CS);
+  nrf_gpio_cfg_default(SX126X_DIO1);
+  nrf_gpio_cfg_default(SX126X_BUSY);
+  nrf_gpio_cfg_default(SX126X_RESET);
+  nrf_gpio_cfg_default(PIN_SPI_MISO);
+  nrf_gpio_cfg_default(PIN_SPI_MOSI);
+  nrf_gpio_cfg_default(PIN_SPI_SCK);
+  nrf_gpio_cfg_default(PIN_LED);
   detachInterrupt(PIN_GPS_PPS);
   detachInterrupt(PIN_BUTTON1);
 }

variants/heltec_tower_v2/variant.h

@@ -11,8 +11,8 @@
 #define NUM_ANALOG_OUTPUTS (0)
 
 #define WIRE_INTERFACES_COUNT (1)
-#define PIN_WIRE_SDA (0 + 11)
+#define PIN_WIRE_SDA (0 + 30)
-#define PIN_WIRE_SCL (0 + 12)
+#define PIN_WIRE_SCL (0 + 5)
 #define PIN_BOARD_SDA PIN_WIRE_SDA
 #define PIN_BOARD_SCL PIN_WIRE_SCL
 
@@ -52,6 +52,13 @@
 #define P_LORA_MOSI  PIN_SPI_MOSI
 #define P_LORA_SCLK  PIN_SPI_SCK
 
+#define USE_KCT8103L_PA_ONLY
+#define LORA_KCT8103L_EN      (0 + 15)
+#define LORA_KCT8103L_TX_RX   (0 + 16)
+#define LORA_PA_POWER         LORA_KCT8103L_EN
+#define RF_PA_DETECT_PIN      (0 + 13)
+#define RF_PA_HIGH_POWER_VALUE HIGH
+
 #define GPS_L76K
 #define GPS_RESET_MODE LOW
 #define PIN_GPS_RESET (32 + 6)