WIP: Nomad Gemini !!!Needs PA and GPIO verification

platformio.ini

@@ -24,6 +24,7 @@ build_flags = -Wno-missing-field-initializers
 	-DUSE_THREAD_NAMES
 	-DTINYGPS_OPTION_NO_CUSTOM_FIELDS
 	-DPB_ENABLE_MALLOC=1
+	-DRADIOLIB_LOW_LEVEL=1
 	-DRADIOLIB_EXCLUDE_CC1101=1
 	-DRADIOLIB_EXCLUDE_NRF24=1
 	-DRADIOLIB_EXCLUDE_RF69=1

src/main.cpp

@@ -168,6 +168,8 @@ bool pauseBluetoothLogging = false;
 
 bool pmu_found;
 
+uint8_t pa_fan_percentage = 50;
+
 #if !MESHTASTIC_EXCLUDE_I2C
 // Array map of sensor types with i2c address and wire as we'll find in the i2c scan
 std::pair<uint8_t, TwoWire *> nodeTelemetrySensorsMap[_meshtastic_TelemetrySensorType_MAX + 1] = {};
@@ -1072,16 +1074,36 @@ void setup()
     mqttInit();
 #endif
 
-#ifdef RF95_FAN_EN
-    // Ability to disable FAN if PIN has been set with RF95_FAN_EN.
+#ifdef RADIO_FAN_EN
+    // Ability to disable FAN if PIN has been set with RADIO_FAN_EN.
     // Make sure LoRa has been started before disabling FAN.
-    if (config.lora.pa_fan_disabled)
-        digitalWrite(RF95_FAN_EN, LOW ^ 0);
+#ifdef RADIO_FAN_PWM
+#if defined(ARCH_ESP32)
+    // Set up PWM at Channel 1 at 25KHz, using 8-bit resolution
+    // Turn ON/OFF fan to the specified value if enabled by config.
+    // code by https://github.com/gjelsoe/
+    if (ledcSetup(1, 25000, 8)) {
+        ledcAttachPin(RADIO_FAN_EN, 1);
+        LOG_INFO("PWM init C1 P%d\n", RADIO_FAN_EN);
+        // Set PWM duty cycle based on fan disabled state
+        ledcWrite(1, config.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+    } else {
+        LOG_WARN("PWM init fail P%d\n", RADIO_FAN_EN);
+    }
+#elif defined(ARCH_NRF52)
+    pinMode(RADIO_FAN_EN, OUTPUT);
+    analogWrite(RADIO_FAN_EN, config.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+#endif
+#else
+    // Set up as ON/OFF switch of fan
+    pinMode(RADIO_FAN_EN, OUTPUT);
+    digitalWrite(RADIO_FAN_EN, LOW ^ 0);
+#endif
 #endif
 
 #ifndef ARCH_PORTDUINO
 
-        // Initialize Wifi
+    // Initialize Wifi
 #if HAS_WIFI
     initWifi();
 #endif

src/main.h

@@ -71,6 +71,8 @@ extern uint32_t shutdownAtMsec;
 
 extern uint32_t serialSinceMsec;
 
+extern uint8_t pa_fan_percentage;
+
 // If a thread does something that might need for it to be rescheduled ASAP it can set this flag
 // This will suppress the current delay and instead try to run ASAP.
 extern bool runASAP;

src/mesh/LR11x0Interface.cpp

@@ -3,6 +3,7 @@
 #include "Throttle.h"
 #include "configuration.h"
 #include "error.h"
+#include "main.h"
 #include "mesh/NodeDB.h"
 #ifdef LR11X0_DIO_AS_RF_SWITCH
 #include "rfswitch.h"
@@ -48,6 +49,8 @@ template <typename T> bool LR11x0Interface<T>::init()
     digitalWrite(LR11X0_POWER_EN, HIGH);
 #endif
 
+    enableFan();
+
 #if ARCH_PORTDUINO
     float tcxoVoltage = (float)settingsMap[dio3_tcxo_voltage] / 1000;
 // FIXME: correct logic to default to not using TCXO if no voltage is specified for LR11x0_DIO3_TCXO_VOLTAGE
@@ -277,6 +280,19 @@ template <typename T> bool LR11x0Interface<T>::isActivelyReceiving()
                            RADIOLIB_LR11X0_IRQ_PREAMBLE_DETECTED);
 }
 
+template <typename T> void LR11x0Interface<T>::regulateFan()
+{
+    float pa_temp = 0;
+    lora.getTemp(&pa_temp);
+    if (pa_temp > 40) {
+        pa_fan_percentage = max(pa_fan_percentage + 1, 100);
+        enableFan();
+    } else {
+        pa_fan_percentage = max(pa_fan_percentage - 1, 100);
+        enableFan();
+    }
+}
+
 template <typename T> bool LR11x0Interface<T>::sleep()
 {
     // \todo Display actual typename of the adapter, not just `LR11x0`

src/mesh/LR11x0Interface.h

@@ -65,5 +65,7 @@ template <class T> class LR11x0Interface : public RadioLibInterface
     virtual void addReceiveMetadata(meshtastic_MeshPacket *mp) override;
 
     virtual void setStandby() override;
+
+    void regulateFan();
 };
 #endif

src/mesh/RF95Interface.cpp

@@ -154,10 +154,7 @@ bool RF95Interface::init()
     digitalWrite(RF95_TXEN, 0);
 #endif
 
-#ifdef RF95_FAN_EN
-    pinMode(RF95_FAN_EN, OUTPUT);
-    digitalWrite(RF95_FAN_EN, 1);
-#endif
+    enableFan();
 
 #ifdef RF95_RXEN
     pinMode(RF95_RXEN, OUTPUT);
@@ -330,10 +327,7 @@ bool RF95Interface::sleep()
     // put chipset into sleep mode
     setStandby(); // First cancel any active receiving/sending
     lora->sleep();
-
-#ifdef RF95_FAN_EN
-    digitalWrite(RF95_FAN_EN, 0);
-#endif
+    disableFan();
 
     return true;
 }

src/mesh/RadioLibInterface.cpp

@@ -511,4 +511,37 @@ bool RadioLibInterface::startSend(meshtastic_MeshPacket *txp)
 
         return res == RADIOLIB_ERR_NONE;
     }
+}
+
+void RadioLibInterface::enableFan()
+{
+#ifdef RADIO_FAN_EN
+
+#ifdef RADIO_FAN_PWM
+#if defined(ARCH_ESP32)
+    ledcWrite(1, config.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+#elif defined(ARCH_NRF52)
+    analogWrite(RADIO_FAN_EN, config.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+#endif
+#else
+    pinMode(RADIO_FAN_EN, OUTPUT);
+    digitalWrite(RADIO_FAN_EN, 1);
+#endif
+#endif
+}
+
+void RadioLibInterface::disableFan()
+{
+#ifdef RADIO_FAN_EN
+#ifdef RADIO_FAN_PWM
+#if defined(ARCH_ESP32)
+    ledcWrite(1, 0);
+#elif defined(ARCH_NRF52)
+    analogWrite(RADIO_FAN_EN, 0);
+#endif
+#else
+    pinMode(RADIO_FAN_EN, OUTPUT);
+    digitalWrite(RADIO_FAN_EN, 0);
+#endif
+#endif
 }

src/mesh/RadioLibInterface.h

@@ -135,6 +135,9 @@ class RadioLibInterface : public RadioInterface, protected concurrency::Notified
     /** Attempt to cancel a previously sent packet.  Returns true if a packet was found we could cancel */
     virtual bool cancelSending(NodeNum from, PacketId id) override;
 
+    void enableFan();
+    void disableFan();
+
   private:
     /** if we have something waiting to send, start a short (random) timer so we can come check for collision before actually
      * doing the transmit */

src/mesh/SX126xInterface.cpp

@@ -49,6 +49,8 @@ template <typename T> bool SX126xInterface<T>::init()
     pinMode(SX126X_POWER_EN, OUTPUT);
 #endif
 
+    enableFan();
+
 #if ARCH_PORTDUINO
     float tcxoVoltage = (float)settingsMap[dio3_tcxo_voltage] / 1000;
     if (settingsMap[sx126x_ant_sw_pin] != RADIOLIB_NC) {

src/mesh/SX128xInterface.cpp

@@ -32,10 +32,7 @@ template <typename T> bool SX128xInterface<T>::init()
     digitalWrite(SX128X_POWER_EN, HIGH);
 #endif
 
-#ifdef RF95_FAN_EN
-    pinMode(RF95_FAN_EN, OUTPUT);
-    digitalWrite(RF95_FAN_EN, 1);
-#endif
+    enableFan();
 
 #if ARCH_PORTDUINO
     if (settingsMap[rxen_pin] != RADIOLIB_NC) {

src/modules/AdminModule.cpp

@@ -588,13 +588,21 @@ void AdminModule::handleSetConfig(const meshtastic_Config &c)
             requiresReboot = false;
         }
 
-#ifdef RF95_FAN_EN
+#ifdef RADIO_FAN_EN
+#ifdef RADIO_FAN_PWM
+#if defined(ARCH_ESP32)
+        ledcWrite(1, c.payload_variant.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+#elif defined(ARCH_NFR52)
+        analogWrite(RADIO_FAN_EN, c.payload_variant.lora.pa_fan_disabled ? 0 : (pa_fan_percentage * 2.55));
+#endif
+#else
         // Turn PA off if disabled by config
         if (c.payload_variant.lora.pa_fan_disabled) {
-            digitalWrite(RF95_FAN_EN, LOW ^ 0);
+            digitalWrite(RADIO_FAN_EN, LOW ^ 0);
         } else {
-            digitalWrite(RF95_FAN_EN, HIGH ^ 0);
+            digitalWrite(RADIO_FAN_EN, HIGH ^ 0);
         }
+#endif
 #endif
         config.lora = c.payload_variant.lora;
         // If we're setting region for the first time, init the region

variants/betafpv_2400_tx_micro/variant.h

@@ -12,7 +12,7 @@
 #define LORA_MISO 19
 #define LORA_MOSI 23
 #define LORA_CS 5
-#define RF95_FAN_EN 17
+#define RADIO_FAN_EN 17
 
 // #define LED_PIN 16 // This is a LED_WS2812 not a standard LED
 #define HAS_NEOPIXEL                         // Enable the use of neopixels

variants/radiomaster_900_bandit/variant.h

@@ -46,7 +46,8 @@
   FAN is active at 250mW on it's ExpressLRS Firmware.
   This FAN has TACHO signal on Pin 27 for use with PWM.
 */
-#define RF95_FAN_EN 2
+#define RADIO_FAN_EN 2
+#define RADIO_FAN_PWM
 
 /*
   LED PIN setup and it has a NeoPixel LED.

variants/radiomaster_900_bandit_nano/variant.h

@@ -32,7 +32,7 @@
   This unit has a FAN built-in.
   FAN is active at 250mW on it's ExpressLRS Firmware.
 */
-#define RF95_FAN_EN 2
+#define RADIO_FAN_EN 2
 
 /*
   LED PIN setup.

variants/radiomaster_nomad_gemini/platformio.ini

@@ -0,0 +1,20 @@
+[env:radiomaster_nomad_gemini]
+extends = esp32_base
+board = esp32doit-devkit-v1
+build_flags =
+  ${esp32_base.build_flags}
+  -DRADIOMASTER_NOMAD_GEMINI
+  -DPRIVATE_HW
+  -DVTABLES_IN_FLASH=1
+  -DCONFIG_DISABLE_HAL_LOCKS=1
+  -O2
+  -Ivariants/radiomaster_nomad_gemini
+  -DMESHTASTIC_EXCLUDE_ENVIRONMENTAL_SENSOR=1
+  -DMESHTASTIC_EXCLUDE_I2C=1
+  -DRADIOLIB_EXCLUDE_SX128X=1
+  -DRADIOLIB_EXCLUDE_SX127X=1
+  -DRADIOLIB_EXCLUDE_SX126X=1
+board_build.f_cpu = 240000000L
+upload_protocol = esptool
+lib_deps =
+  ${esp32_base.lib_deps}

variants/radiomaster_nomad_gemini/rfswitch.h

@@ -0,0 +1,21 @@
+#include "RadioLib.h"
+
+static const uint32_t rfswitch_dio_pins[] = {RADIOLIB_LR11X0_DIO5, RADIOLIB_LR11X0_DIO6, RADIOLIB_LR11X0_DIO7,
+                                             RADIOLIB_LR11X0_DIO8, RADIOLIB_NC};
+
+static const Module::RfSwitchMode_t rfswitch_table[] = {
+    // mode                  DIO5  DIO6 DIO7 DIO8
+    {LR11x0::MODE_STBY, {LOW, LOW, LOW, LOW}},   {LR11x0::MODE_RX, {LOW, LOW, HIGH, LOW}},
+    {LR11x0::MODE_TX, {LOW, LOW, LOW, HIGH}},    {LR11x0::MODE_TX_HP, {LOW, LOW, LOW, HIGH}},
+    {LR11x0::MODE_TX_HF, {LOW, HIGH, LOW, LOW}}, {LR11x0::MODE_GNSS, {LOW, LOW, LOW, LOW}},
+    {LR11x0::MODE_WIFI, {LOW, LOW, LOW, LOW}},   END_OF_MODE_TABLE,
+};
+
+/*
+
+DIO5: RXEN 2.4GHz
+DIO6: TXEN 2.4GHz
+DIO7: RXEN 900MHz
+DIO8: TXEN 900MHz
+
+*/

variants/radiomaster_nomad_gemini/variant.h

@@ -0,0 +1,59 @@
+#define HAS_SCREEN 0
+#define HAS_WIRE 0
+#define HAS_GPS 0
+#undef GPS_RX_PIN
+#undef GPS_TX_PIN
+
+#define PIN_SPI_MISO 33
+#define PIN_SPI_MOSI 32
+#define PIN_SPI_SCK 25
+#define PIN_SPI_NSS 27
+
+#define LORA_RESET 15
+#define LORA_DIO1 37
+#define LORA_DIO2 36
+#define LORA_SCK PIN_SPI_SCK
+#define LORA_MISO PIN_SPI_MISO
+#define LORA_MOSI PIN_SPI_MOSI
+#define LORA_CS PIN_SPI_NSS
+
+// supported modules list
+#define USE_LR1121
+
+#define LR1121_IRQ_PIN LORA_DIO1
+#define LR1121_NRESET_PIN LORA_RESET
+#define LR1121_BUSY_PIN LORA_DIO2
+#define LR1121_SPI_NSS_PIN LORA_CS
+#define LR1121_SPI_SCK_PIN LORA_SCK
+#define LR1121_SPI_MOSI_PIN LORA_MOSI
+#define LR1121_SPI_MISO_PIN LORA_MISO
+
+// not yet implemented
+#define JANUS_RADIO
+#define LR1121_IRQ2_PIN 34
+#define LR1121_NRESET2_PIN 21
+#define LR1121_BUSY2_PIN 39
+#define LR1121_SPI_NSS2_PIN 13
+
+// #define LR11X0_DIO3_TCXO_VOLTAGE 1.6
+#define LR11X0_DIO_AS_RF_SWITCH
+
+#define HAS_NEOPIXEL                         // Enable the use of neopixels
+#define NEOPIXEL_COUNT 2                     // How many neopixels are connected
+#define NEOPIXEL_DATA 22                     // GPIO pin used to send data to the neopixels
+#define NEOPIXEL_TYPE (NEO_GRB + NEO_KHZ800) // Type of neopixels in use
+#define ENABLE_AMBIENTLIGHTING               // Turn on Ambient Lighting
+
+#define BUTTON_PIN 34
+#define BUTTON_NEED_PULLUP
+
+#undef EXT_NOTIFY_OUT
+
+// #define BAT_MEASURE_ADC_UNIT
+// #define BATTERY_PIN 26
+// #define ADC_CHANNEL ADC2_GPIO26_CHANNEL
+// #define BATTERY_SENSE_SAMPLES 30
+
+#define RADIO_FAN_EN 2
+// this board does need PWM on the FAN PIN
+#define RADIO_FAN_PWM