Remove GPS Baudrate locking for Seeed Xiao S3 Kit

The Seeed Xiao S3 Kit's default GPS is an L76K which operates at 9600 baud, so when this variant was defined that baud rate was specified.

However, this is a development board and it is expected that users can attach their own devices. This includes GPS, which may operate at a different baud rate. The current fixed baud rate prevents this, so this patch removes that setting.

This will revert to the regular automatic probe method. This will successfully detect the L76K as before (the same speed as before since 9600 baud is the first baud rate checked), but also allow other GPSes at other baud rates to be detected.

Thanks to @ScarpMarc for the report

Fixes https://github.com/meshtastic/firmware/issues/9373#issuecomment-3774802763

platformio.ini

@@ -212,3 +212,30 @@ lib_deps =
 	sensirion/Sensirion Core@0.7.2
 	# renovate: datasource=custom.pio depName=Sensirion I2C SCD4x packageName=sensirion/library/Sensirion I2C SCD4x
 	sensirion/Sensirion I2C SCD4x@1.1.0
+; Same as environmental_extra but without BSEC (saves ~3.5KB DRAM for original ESP32 targets)
+[environmental_extra_no_bsec]
+lib_deps =
+	# renovate: datasource=custom.pio depName=Adafruit BMP3XX packageName=adafruit/library/Adafruit BMP3XX Library
+	adafruit/Adafruit BMP3XX Library@2.1.6
+	# renovate: datasource=custom.pio depName=Adafruit MAX1704X packageName=adafruit/library/Adafruit MAX1704X
+	adafruit/Adafruit MAX1704X@1.0.3
+	# renovate: datasource=custom.pio depName=Adafruit SHTC3 packageName=adafruit/library/Adafruit SHTC3 Library
+	adafruit/Adafruit SHTC3 Library@1.0.2
+	# renovate: datasource=custom.pio depName=Adafruit LPS2X packageName=adafruit/library/Adafruit LPS2X
+	adafruit/Adafruit LPS2X@2.0.6
+	# renovate: datasource=custom.pio depName=Adafruit SHT31 packageName=adafruit/library/Adafruit SHT31 Library
+	adafruit/Adafruit SHT31 Library@2.2.2
+	# renovate: datasource=custom.pio depName=Adafruit VEML7700 packageName=adafruit/library/Adafruit VEML7700 Library
+	adafruit/Adafruit VEML7700 Library@2.1.6
+	# renovate: datasource=custom.pio depName=Adafruit SHT4x packageName=adafruit/library/Adafruit SHT4x Library
+	adafruit/Adafruit SHT4x Library@1.0.5
+	# renovate: datasource=custom.pio depName=SparkFun Qwiic Scale NAU7802 packageName=sparkfun/library/SparkFun Qwiic Scale NAU7802 Arduino Library
+	sparkfun/SparkFun Qwiic Scale NAU7802 Arduino Library@1.0.6
+	# renovate: datasource=custom.pio depName=ClosedCube OPT3001 packageName=closedcube/library/ClosedCube OPT3001
+	closedcube/ClosedCube OPT3001@1.1.2
+	# renovate: datasource=git-refs depName=meshtastic-DFRobot_LarkWeatherStation packageName=https://github.com/meshtastic/DFRobot_LarkWeatherStation gitBranch=master
+	https://github.com/meshtastic/DFRobot_LarkWeatherStation/archive/4de3a9cadef0f6a5220a8a906cf9775b02b0040d.zip
+	# renovate: datasource=custom.pio depName=Sensirion Core packageName=sensirion/library/Sensirion Core
+	sensirion/Sensirion Core@0.7.2
+	# renovate: datasource=custom.pio depName=Sensirion I2C SCD4x packageName=sensirion/library/Sensirion I2C SCD4x
+	sensirion/Sensirion I2C SCD4x@1.1.0

src/mesh/generated/meshtastic/admin.pb.h

@@ -77,7 +77,9 @@ typedef enum _meshtastic_AdminMessage_ModuleConfigType {
     /* TODO: REPLACE */
     meshtastic_AdminMessage_ModuleConfigType_DETECTIONSENSOR_CONFIG = 11,
     /* TODO: REPLACE */
-    meshtastic_AdminMessage_ModuleConfigType_PAXCOUNTER_CONFIG = 12
+    meshtastic_AdminMessage_ModuleConfigType_PAXCOUNTER_CONFIG = 12,
+    /* TODO: REPLACE */
+    meshtastic_AdminMessage_ModuleConfigType_STATUSMESSAGE_CONFIG = 13
 } meshtastic_AdminMessage_ModuleConfigType;
 
 typedef enum _meshtastic_AdminMessage_BackupLocation {
@@ -323,8 +325,8 @@ extern "C" {
 #define _meshtastic_AdminMessage_ConfigType_ARRAYSIZE ((meshtastic_AdminMessage_ConfigType)(meshtastic_AdminMessage_ConfigType_DEVICEUI_CONFIG+1))
 
 #define _meshtastic_AdminMessage_ModuleConfigType_MIN meshtastic_AdminMessage_ModuleConfigType_MQTT_CONFIG
-#define _meshtastic_AdminMessage_ModuleConfigType_MAX meshtastic_AdminMessage_ModuleConfigType_PAXCOUNTER_CONFIG
+#define _meshtastic_AdminMessage_ModuleConfigType_MAX meshtastic_AdminMessage_ModuleConfigType_STATUSMESSAGE_CONFIG
-#define _meshtastic_AdminMessage_ModuleConfigType_ARRAYSIZE ((meshtastic_AdminMessage_ModuleConfigType)(meshtastic_AdminMessage_ModuleConfigType_PAXCOUNTER_CONFIG+1))
+#define _meshtastic_AdminMessage_ModuleConfigType_ARRAYSIZE ((meshtastic_AdminMessage_ModuleConfigType)(meshtastic_AdminMessage_ModuleConfigType_STATUSMESSAGE_CONFIG+1))
 
 #define _meshtastic_AdminMessage_BackupLocation_MIN meshtastic_AdminMessage_BackupLocation_FLASH
 #define _meshtastic_AdminMessage_BackupLocation_MAX meshtastic_AdminMessage_BackupLocation_SD

src/mesh/generated/meshtastic/deviceonly.pb.h

@@ -361,7 +361,7 @@ extern const pb_msgdesc_t meshtastic_BackupPreferences_msg;
 /* Maximum encoded size of messages (where known) */
 /* meshtastic_NodeDatabase_size depends on runtime parameters */
 #define MESHTASTIC_MESHTASTIC_DEVICEONLY_PB_H_MAX_SIZE meshtastic_BackupPreferences_size
-#define meshtastic_BackupPreferences_size        2279
+#define meshtastic_BackupPreferences_size        2362
 #define meshtastic_ChannelFile_size              718
 #define meshtastic_DeviceState_size              1737
 #define meshtastic_NodeInfoLite_size             196

src/mesh/generated/meshtastic/localonly.pb.h

@@ -87,6 +87,9 @@ typedef struct _meshtastic_LocalModuleConfig {
     /* Paxcounter Config */
     bool has_paxcounter;
     meshtastic_ModuleConfig_PaxcounterConfig paxcounter;
+    /* StatusMessage Config */
+    bool has_statusmessage;
+    meshtastic_ModuleConfig_StatusMessageConfig statusmessage;
 } meshtastic_LocalModuleConfig;
 
 
@@ -96,9 +99,9 @@ extern "C" {
 
 /* Initializer values for message structs */
 #define meshtastic_LocalConfig_init_default      {false, meshtastic_Config_DeviceConfig_init_default, false, meshtastic_Config_PositionConfig_init_default, false, meshtastic_Config_PowerConfig_init_default, false, meshtastic_Config_NetworkConfig_init_default, false, meshtastic_Config_DisplayConfig_init_default, false, meshtastic_Config_LoRaConfig_init_default, false, meshtastic_Config_BluetoothConfig_init_default, 0, false, meshtastic_Config_SecurityConfig_init_default}
-#define meshtastic_LocalModuleConfig_init_default {false, meshtastic_ModuleConfig_MQTTConfig_init_default, false, meshtastic_ModuleConfig_SerialConfig_init_default, false, meshtastic_ModuleConfig_ExternalNotificationConfig_init_default, false, meshtastic_ModuleConfig_StoreForwardConfig_init_default, false, meshtastic_ModuleConfig_RangeTestConfig_init_default, false, meshtastic_ModuleConfig_TelemetryConfig_init_default, false, meshtastic_ModuleConfig_CannedMessageConfig_init_default, 0, false, meshtastic_ModuleConfig_AudioConfig_init_default, false, meshtastic_ModuleConfig_RemoteHardwareConfig_init_default, false, meshtastic_ModuleConfig_NeighborInfoConfig_init_default, false, meshtastic_ModuleConfig_AmbientLightingConfig_init_default, false, meshtastic_ModuleConfig_DetectionSensorConfig_init_default, false, meshtastic_ModuleConfig_PaxcounterConfig_init_default}
+#define meshtastic_LocalModuleConfig_init_default {false, meshtastic_ModuleConfig_MQTTConfig_init_default, false, meshtastic_ModuleConfig_SerialConfig_init_default, false, meshtastic_ModuleConfig_ExternalNotificationConfig_init_default, false, meshtastic_ModuleConfig_StoreForwardConfig_init_default, false, meshtastic_ModuleConfig_RangeTestConfig_init_default, false, meshtastic_ModuleConfig_TelemetryConfig_init_default, false, meshtastic_ModuleConfig_CannedMessageConfig_init_default, 0, false, meshtastic_ModuleConfig_AudioConfig_init_default, false, meshtastic_ModuleConfig_RemoteHardwareConfig_init_default, false, meshtastic_ModuleConfig_NeighborInfoConfig_init_default, false, meshtastic_ModuleConfig_AmbientLightingConfig_init_default, false, meshtastic_ModuleConfig_DetectionSensorConfig_init_default, false, meshtastic_ModuleConfig_PaxcounterConfig_init_default, false, meshtastic_ModuleConfig_StatusMessageConfig_init_default}
 #define meshtastic_LocalConfig_init_zero         {false, meshtastic_Config_DeviceConfig_init_zero, false, meshtastic_Config_PositionConfig_init_zero, false, meshtastic_Config_PowerConfig_init_zero, false, meshtastic_Config_NetworkConfig_init_zero, false, meshtastic_Config_DisplayConfig_init_zero, false, meshtastic_Config_LoRaConfig_init_zero, false, meshtastic_Config_BluetoothConfig_init_zero, 0, false, meshtastic_Config_SecurityConfig_init_zero}
-#define meshtastic_LocalModuleConfig_init_zero   {false, meshtastic_ModuleConfig_MQTTConfig_init_zero, false, meshtastic_ModuleConfig_SerialConfig_init_zero, false, meshtastic_ModuleConfig_ExternalNotificationConfig_init_zero, false, meshtastic_ModuleConfig_StoreForwardConfig_init_zero, false, meshtastic_ModuleConfig_RangeTestConfig_init_zero, false, meshtastic_ModuleConfig_TelemetryConfig_init_zero, false, meshtastic_ModuleConfig_CannedMessageConfig_init_zero, 0, false, meshtastic_ModuleConfig_AudioConfig_init_zero, false, meshtastic_ModuleConfig_RemoteHardwareConfig_init_zero, false, meshtastic_ModuleConfig_NeighborInfoConfig_init_zero, false, meshtastic_ModuleConfig_AmbientLightingConfig_init_zero, false, meshtastic_ModuleConfig_DetectionSensorConfig_init_zero, false, meshtastic_ModuleConfig_PaxcounterConfig_init_zero}
+#define meshtastic_LocalModuleConfig_init_zero   {false, meshtastic_ModuleConfig_MQTTConfig_init_zero, false, meshtastic_ModuleConfig_SerialConfig_init_zero, false, meshtastic_ModuleConfig_ExternalNotificationConfig_init_zero, false, meshtastic_ModuleConfig_StoreForwardConfig_init_zero, false, meshtastic_ModuleConfig_RangeTestConfig_init_zero, false, meshtastic_ModuleConfig_TelemetryConfig_init_zero, false, meshtastic_ModuleConfig_CannedMessageConfig_init_zero, 0, false, meshtastic_ModuleConfig_AudioConfig_init_zero, false, meshtastic_ModuleConfig_RemoteHardwareConfig_init_zero, false, meshtastic_ModuleConfig_NeighborInfoConfig_init_zero, false, meshtastic_ModuleConfig_AmbientLightingConfig_init_zero, false, meshtastic_ModuleConfig_DetectionSensorConfig_init_zero, false, meshtastic_ModuleConfig_PaxcounterConfig_init_zero, false, meshtastic_ModuleConfig_StatusMessageConfig_init_zero}
 
 /* Field tags (for use in manual encoding/decoding) */
 #define meshtastic_LocalConfig_device_tag        1
@@ -124,6 +127,7 @@ extern "C" {
 #define meshtastic_LocalModuleConfig_ambient_lighting_tag 12
 #define meshtastic_LocalModuleConfig_detection_sensor_tag 13
 #define meshtastic_LocalModuleConfig_paxcounter_tag 14
+#define meshtastic_LocalModuleConfig_statusmessage_tag 15
 
 /* Struct field encoding specification for nanopb */
 #define meshtastic_LocalConfig_FIELDLIST(X, a) \
@@ -161,7 +165,8 @@ X(a, STATIC,   OPTIONAL, MESSAGE,  remote_hardware,  10) \
 X(a, STATIC,   OPTIONAL, MESSAGE,  neighbor_info,    11) \
 X(a, STATIC,   OPTIONAL, MESSAGE,  ambient_lighting,  12) \
 X(a, STATIC,   OPTIONAL, MESSAGE,  detection_sensor,  13) \
-X(a, STATIC,   OPTIONAL, MESSAGE,  paxcounter,       14)
+X(a, STATIC,   OPTIONAL, MESSAGE,  paxcounter,       14) \
+X(a, STATIC,   OPTIONAL, MESSAGE,  statusmessage,    15)
 #define meshtastic_LocalModuleConfig_CALLBACK NULL
 #define meshtastic_LocalModuleConfig_DEFAULT NULL
 #define meshtastic_LocalModuleConfig_mqtt_MSGTYPE meshtastic_ModuleConfig_MQTTConfig
@@ -177,6 +182,7 @@ X(a, STATIC,   OPTIONAL, MESSAGE,  paxcounter,       14)
 #define meshtastic_LocalModuleConfig_ambient_lighting_MSGTYPE meshtastic_ModuleConfig_AmbientLightingConfig
 #define meshtastic_LocalModuleConfig_detection_sensor_MSGTYPE meshtastic_ModuleConfig_DetectionSensorConfig
 #define meshtastic_LocalModuleConfig_paxcounter_MSGTYPE meshtastic_ModuleConfig_PaxcounterConfig
+#define meshtastic_LocalModuleConfig_statusmessage_MSGTYPE meshtastic_ModuleConfig_StatusMessageConfig
 
 extern const pb_msgdesc_t meshtastic_LocalConfig_msg;
 extern const pb_msgdesc_t meshtastic_LocalModuleConfig_msg;
@@ -186,9 +192,9 @@ extern const pb_msgdesc_t meshtastic_LocalModuleConfig_msg;
 #define meshtastic_LocalModuleConfig_fields &meshtastic_LocalModuleConfig_msg
 
 /* Maximum encoded size of messages (where known) */
-#define MESHTASTIC_MESHTASTIC_LOCALONLY_PB_H_MAX_SIZE meshtastic_LocalConfig_size
+#define MESHTASTIC_MESHTASTIC_LOCALONLY_PB_H_MAX_SIZE meshtastic_LocalModuleConfig_size
 #define meshtastic_LocalConfig_size              749
-#define meshtastic_LocalModuleConfig_size        675
+#define meshtastic_LocalModuleConfig_size        758
 
 #ifdef __cplusplus
 } /* extern "C" */

src/mesh/generated/meshtastic/telemetry.pb.h

@@ -361,6 +361,8 @@ typedef struct _meshtastic_LocalStats {
     uint32_t heap_free_bytes;
     /* Number of packets that were dropped because the transmit queue was full. */
     uint16_t num_tx_dropped;
+    /* Noise floor value measured in dBm */
+    int32_t noise_floor;
 } meshtastic_LocalStats;
 
 /* Health telemetry metrics */
@@ -458,7 +460,7 @@ extern "C" {
 #define meshtastic_EnvironmentMetrics_init_default {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define meshtastic_PowerMetrics_init_default     {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define meshtastic_AirQualityMetrics_init_default {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
-#define meshtastic_LocalStats_init_default       {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+#define meshtastic_LocalStats_init_default       {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define meshtastic_HealthMetrics_init_default    {false, 0, false, 0, false, 0}
 #define meshtastic_HostMetrics_init_default      {0, 0, 0, false, 0, false, 0, 0, 0, 0, false, ""}
 #define meshtastic_Telemetry_init_default        {0, 0, {meshtastic_DeviceMetrics_init_default}}
@@ -467,7 +469,7 @@ extern "C" {
 #define meshtastic_EnvironmentMetrics_init_zero  {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define meshtastic_PowerMetrics_init_zero        {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
 #define meshtastic_AirQualityMetrics_init_zero   {false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0, false, 0}
-#define meshtastic_LocalStats_init_zero          {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+#define meshtastic_LocalStats_init_zero          {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
 #define meshtastic_HealthMetrics_init_zero       {false, 0, false, 0, false, 0}
 #define meshtastic_HostMetrics_init_zero         {0, 0, 0, false, 0, false, 0, 0, 0, 0, false, ""}
 #define meshtastic_Telemetry_init_zero           {0, 0, {meshtastic_DeviceMetrics_init_zero}}
@@ -556,6 +558,7 @@ extern "C" {
 #define meshtastic_LocalStats_heap_total_bytes_tag 12
 #define meshtastic_LocalStats_heap_free_bytes_tag 13
 #define meshtastic_LocalStats_num_tx_dropped_tag 14
+#define meshtastic_LocalStats_noise_floor_tag    15
 #define meshtastic_HealthMetrics_heart_bpm_tag   1
 #define meshtastic_HealthMetrics_spO2_tag        2
 #define meshtastic_HealthMetrics_temperature_tag 3
@@ -678,7 +681,8 @@ X(a, STATIC,   SINGULAR, UINT32,   num_tx_relay,     10) \
 X(a, STATIC,   SINGULAR, UINT32,   num_tx_relay_canceled,  11) \
 X(a, STATIC,   SINGULAR, UINT32,   heap_total_bytes,  12) \
 X(a, STATIC,   SINGULAR, UINT32,   heap_free_bytes,  13) \
-X(a, STATIC,   SINGULAR, UINT32,   num_tx_dropped,   14)
+X(a, STATIC,   SINGULAR, UINT32,   num_tx_dropped,   14) \
+X(a, STATIC,   SINGULAR, INT32,    noise_floor,      15)
 #define meshtastic_LocalStats_CALLBACK NULL
 #define meshtastic_LocalStats_DEFAULT NULL
 
@@ -755,7 +759,7 @@ extern const pb_msgdesc_t meshtastic_Nau7802Config_msg;
 #define meshtastic_EnvironmentMetrics_size       113
 #define meshtastic_HealthMetrics_size            11
 #define meshtastic_HostMetrics_size              264
-#define meshtastic_LocalStats_size               76
+#define meshtastic_LocalStats_size               87
 #define meshtastic_Nau7802Config_size            16
 #define meshtastic_PowerMetrics_size             81
 #define meshtastic_Telemetry_size                272

variants/esp32/esp32.ini

@@ -7,3 +7,22 @@ custom_esp32_kind = esp32
 build_flags =
   ${esp32_common.build_flags}
   -DMESHTASTIC_EXCLUDE_AUDIO=1
+; Override lib_deps to use environmental_extra_no_bsec instead of environmental_extra
+; BSEC library uses ~3.5KB DRAM which causes overflow on original ESP32 targets
+lib_deps =
+  ${arduino_base.lib_deps}
+  ${networking_base.lib_deps}
+  ${networking_extra.lib_deps}
+  ${environmental_base.lib_deps}
+  ${environmental_extra_no_bsec.lib_deps}
+  ${radiolib_base.lib_deps}
+  # renovate: datasource=git-refs depName=meshtastic-esp32_https_server packageName=https://github.com/meshtastic/esp32_https_server gitBranch=master
+  https://github.com/meshtastic/esp32_https_server/archive/3223704846752e6d545139204837bdb2a55459ca.zip
+  # renovate: datasource=custom.pio depName=NimBLE-Arduino packageName=h2zero/library/NimBLE-Arduino
+  h2zero/NimBLE-Arduino@^1.4.3
+  # renovate: datasource=git-refs depName=libpax packageName=https://github.com/dbinfrago/libpax gitBranch=master
+  https://github.com/dbinfrago/libpax/archive/3cdc0371c375676a97967547f4065607d4c53fd1.zip
+  # renovate: datasource=github-tags depName=XPowersLib packageName=lewisxhe/XPowersLib
+  https://github.com/lewisxhe/XPowersLib/archive/v0.3.2.zip
+  # renovate: datasource=custom.pio depName=rweather/Crypto packageName=rweather/library/Crypto
+  rweather/Crypto@0.4.0

variants/esp32s3/seeed_xiao_s3/variant.h

@@ -50,7 +50,6 @@ L76K GPS Module Information : https://www.seeedstudio.com/L76K-GNSS-Module-for-S
 #define GPS_RX_PIN 44
 #define GPS_TX_PIN 43
 #define HAS_GPS 1
-#define GPS_BAUDRATE 9600
 #define GPS_THREAD_INTERVAL 50
 #define PIN_SERIAL1_RX PIN_GPS_TX
 #define PIN_SERIAL1_TX PIN_GPS_RX

variants/stm32/russell/platformio.ini

@@ -0,0 +1,21 @@
+; Russell is a board designed to mount on an ER34615/IFR32700 cell and go Up! on a balloon
+; Hardware repository: https://github.com/Meshtastic-Malaysia/russell
+; - RAK3172 STM32WLE5CCU6 MCU + integrated SX1262 LoRa
+; - CDtop CD-PA1010D GPS
+; - Bosch Sensortec BME280 sensor
+; - Consonance CN3158 LiFePO4 solar charger
+[env:russell]
+extends = stm32_base
+board = wiscore_rak3172
+board_level = extra
+board_upload.maximum_size = 233472 ; reserve the last 28KB for filesystem
+build_flags =
+  ${stm32_base.build_flags}
+  -Ivariants/stm32/russell
+  -DPRIVATE_HW
+lib_deps =
+  ${stm32_base.lib_deps}
+	# renovate: datasource=custom.pio depName=Adafruit BME280 packageName=adafruit/library/Adafruit BME280 Library
+	adafruit/Adafruit BME280 Library@2.3.0
+
+upload_port = stlink

variants/stm32/russell/rfswitch.h

@@ -0,0 +1,7 @@
+// Pins from https://forum.rakwireless.com/t/rak3172-internal-schematic/4557/2
+// PB8, PC13
+
+static const RADIOLIB_PIN_TYPE rfswitch_pins[5] = {PB8, PC13, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};
+
+static const Module::RfSwitchMode_t rfswitch_table[4] = {
+    {STM32WLx::MODE_IDLE, {LOW, LOW}}, {STM32WLx::MODE_RX, {HIGH, LOW}}, {STM32WLx::MODE_TX_HP, {LOW, HIGH}}, END_OF_MODE_TABLE};

variants/stm32/russell/variant.h

@@ -0,0 +1,41 @@
+#ifndef _VARIANT_RUSSELL_
+#define _VARIANT_RUSSELL_
+
+#define USE_STM32WLx
+
+// I/O
+#define LED_PIN PA0 // Red LED
+#define LED_STATE_ON 1
+#define BUTTON_PIN PH3 // Shared with BOOT0
+#define BUTTON_NEED_PULLUP
+// Charger IC charge/standby pins are open-drain with no hardware pull-up:
+// Internal pull-up is needed on STM32 (TODO)
+// #define EXT_CHRG_DETECT PA5
+// #define EXT_PWR_DETECT PA4
+
+// Bosch Sensortec BME280
+#define HAS_SENSOR 1
+
+// CDtop CD-PA1010D
+#define ENABLE_HWSERIAL1
+#define PIN_SERIAL1_RX PB7
+#define PIN_SERIAL1_TX PB6
+#define HAS_GPS 1
+#define PIN_GPS_STANDBY PA15
+#define GPS_RX_PIN PB7
+#define GPS_TX_PIN PB6
+
+// LoRa
+/*
+ * RAK3172   (-20–85°C) -> No TCXO
+ * RAK3172-T (-40–85°C) -> 3.0V TCXO
+ * https://github.com/RAKWireless/RAK-STM32-RUI/blob/e5a28be8fab1a492bd9223dd425ca33a8a297d90/variants/WisDuo_RAK3172-T_Board/radio_conf.h#L91
+ */
+#define TCXO_OPTIONAL
+#define SX126X_DIO3_TCXO_VOLTAGE 3.0
+
+// Required to avoid Serial1 conflicts due to board definition here:
+// https://github.com/stm32duino/Arduino_Core_STM32/blob/main/variants/STM32WLxx/WL54CCU_WL55CCU_WLE4C(8-B-C)U_WLE5C(8-B-C)U/variant_RAK3172_MODULE.h
+#define RAK3172
+
+#endif