Adds Rx fan support

src/include/target/Unified_ESP_RX.h

@@ -146,4 +146,6 @@
 #define VPD_VALUES_100MW hardware_u16_array(HARDWARE_vtx_amp_vpd_100mW)
 #define PWM_VALUES_25MW hardware_u16_array(HARDWARE_vtx_amp_pwm_25mW)
 #define PWM_VALUES_100MW hardware_u16_array(HARDWARE_vtx_amp_pwm_100mW)
-#endif
+#endif
+
+#define GPIO_PIN_FAN_EN hardware_pin(HARDWARE_misc_fan_en)

src/lib/OPTIONS/options.cpp

@@ -72,6 +72,11 @@ __attribute__ ((used)) static firmware_options_t flashedOptions = {
 #else
     .flash_discriminator = 0,
 #endif
+#if defined(FAN_MIN_RUNTIME)
+    .fan_min_runtime = FAN_MIN_RUNTIME,
+#else
+    .fan_min_runtime = 30,
+#endif
 #if defined(PLATFORM_ESP32) || defined(PLATFORM_ESP8266)
     #if defined(AUTO_WIFI_ON_INTERVAL)
         .wifi_auto_on_interval = AUTO_WIFI_ON_INTERVAL * 1000,
@@ -123,11 +128,6 @@ __attribute__ ((used)) static firmware_options_t flashedOptions = {
     .tlm_report_interval = TLM_REPORT_INTERVAL_MS,
 #else
     .tlm_report_interval = 240U,
-#endif
-#if defined(FAN_MIN_RUNTIME)
-    .fan_min_runtime = FAN_MIN_RUNTIME,
-#else
-    .fan_min_runtime = 30,
 #endif
     ._unused1 = false,
 #if defined(UNLOCK_HIGHER_POWER)

src/lib/OPTIONS/options.h

@@ -26,6 +26,7 @@ typedef struct _options {
     uint8_t     uid[6];         // MY_UID derived from MY_BINDING_PHRASE
     uint32_t    flash_discriminator;    // Discriminator value used to determine if the device has been reflashed and therefore
                                         // the SPIFSS settings are obsolete and the flashed settings should be used in preference
+    uint32_t    fan_min_runtime;
 #if defined(PLATFORM_ESP32) || defined(PLATFORM_ESP8266)
     int32_t     wifi_auto_on_interval;
     char        home_wifi_ssid[33];
@@ -40,7 +41,6 @@ typedef struct _options {
 #endif
 #if defined(TARGET_TX) || defined(UNIT_TEST)
     uint32_t    tlm_report_interval;
-    uint32_t    fan_min_runtime;
     bool        _unused1:1;
     bool        unlock_higher_power:1;
     bool        is_airport:1;

src/lib/THERMAL/devThermal.cpp

@@ -3,16 +3,14 @@
 
 #if defined(HAS_THERMAL) || defined(HAS_FAN)
 
-#if defined(TARGET_RX)
-    #error "devThermal not supported on RX"
-#endif
-
-#include "targets.h"
+#include "config.h"
 #include "logging.h"
 
-#include "config.h"
+#if defined(TARGET_RX)
+extern RxConfig config;
+#else
 extern TxConfig config;
-
+#endif
 #define THERMAL_DURATION 1000
 
 #if defined(HAS_THERMAL)
@@ -100,6 +98,7 @@ static void timeoutThermal()
 }
 
 #if defined(PLATFORM_ESP32)
+#ifndef TARGET_RX
 static void setFanSpeed()
 {
     const uint8_t defaultFanSpeeds[] = {
@@ -118,6 +117,7 @@ static void setFanSpeed()
     DBGLN("Fan speed: %d (power) -> %u (pwm)", POWERMGNT::currPower(), speed);
 }
 #endif
+#endif
 
 /*
  * For enable-only fans:
@@ -133,13 +133,17 @@ static void timeoutFan()
 #if defined(HAS_FAN)
     static uint8_t fanStateDuration;
     static bool fanIsOn;
+#if defined(TARGET_RX)
+    bool fanShouldBeOn = true;
+#else
     bool fanShouldBeOn = POWERMGNT::currPower() >= (PowerLevels_e)config.GetPowerFanThreshold();
-
+#endif
     if (fanIsOn)
     {
         if (fanShouldBeOn)
         {
 #if defined(PLATFORM_ESP32)
+#ifndef TARGET_RX
             if (GPIO_PIN_FAN_PWM != UNDEF_PIN)
             {
                 static PowerLevels_e lastPower = MinPower;
@@ -155,6 +159,7 @@ static void timeoutFan()
                 }
             }
             else
+#endif
 #endif
             {
                 fanStateDuration = 0; // reset the timeout

src/lib/THERMAL/rpm.cpp

@@ -1,6 +1,6 @@
 #include "targets.h"
 
-#if defined(PLATFORM_ESP32)
+#if defined(PLATFORM_ESP32) && !defined(PLATFORM_ESP32_C3)
 #include "logging.h"
 #include <driver/pcnt.h>
 #include <soc/pcnt_struct.h>

src/src/rx_main.cpp

@@ -37,6 +37,7 @@
 #include "devSerialUpdate.h"
 #include "devBaro.h"
 #include "devMSPVTX.h"
+#include "devThermal.h"
 
 #if defined(PLATFORM_ESP8266)
 #include <user_interface.h>
@@ -95,6 +96,9 @@ device_affinity_t ui_devices[] = {
 #ifdef HAS_MSP_VTX
   {&MSPVTx_device, 0}, // dependency on VTxSPI_device
 #endif
+#if defined(HAS_THERMAL) || defined(HAS_FAN)
+  {&Thermal_device, 0},
+#endif
 };
 
 uint8_t antenna = 0;    // which antenna is currently in use