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32 Commits

Author SHA1 Message Date
Matthias Wientapper
4da42d02d4 Disable flood adverts 2026-03-03 20:13:23 +01:00
Matthias Wientapper
16faa821eb Set RAK boot lock voltage to 0V 2026-03-03 20:13:23 +01:00
Matthias Wientapper
08341eb27a Integration of upstrem PR #1810 2026-03-03 20:13:23 +01:00
Matthias Wientapper
4d352d646a Integration of upstrem PR #1338 2026-03-03 20:13:23 +01:00
Matthias Wientapper
aee066dd0f Integration of upstrem PR #1297 2026-03-03 20:13:22 +01:00
Liam Cottle
cdd3d5f34e Merge pull request #1841 from weebl2000/nit-prefs
prefs is 5 char length :nerd:
2026-03-04 01:39:55 +13:00
ripplebiz
7c594ebc50 Merge pull request #1743 from weebl2000/fixagcreset
fix agc reset on SX126x, SX1276 & LR11x0 chips
2026-03-03 22:19:34 +11:00
Liam Cottle
ba3d9e264e Merge pull request #1836 from weebl2000/fix-rak3401-sky66122-11-fem
Fix RAK3401 SKY66122-11 FEM control: enable CSD/CPS for proper PA/LNA operation
2026-03-03 23:51:42 +13:00
Liam Cottle
d7ad89046b Merge pull request #1633 from weebl2000/fix/gps-uart-power-leak
Fix GPS UART consuming +8mA when disabled (nRF52)
2026-03-03 23:26:58 +13:00
Liam Cottle
67779aded8 Merge pull request #1600 from weebl2000/heltec_deep_sleep_lna
Hold GC1109 PA_POWER during deep sleep for LNA RX wake
2026-03-03 23:20:22 +13:00
Liam Cottle
bbd621ba85 Merge pull request #1351 from weebl2000/heltec_wireless_tracker_gps
Support GPS properly on Heltec Wireless Tracker v1.x
2026-03-03 23:11:46 +13:00
ripplebiz
6431cd2d47 Merge pull request #1900 from wbijen/feature/contact-filter-by-hops
Add configurable max hops filter for auto-add contacts
2026-03-03 21:05:44 +11:00
Wouter Bijen
1d190ad944 Clamp max_hops to 64 to cover full protocol hop range (0-63) 2026-03-03 09:05:53 +01:00
Wouter Bijen
2cb08775c0 Clarify comment wording: 1 = direct (0 hops)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-03 08:40:17 +01:00
Wouter Bijen
c016db86d5 Address PR review: subtract-1 encoding and clamp max_hops
- Change > to >= so stored value 1 means direct/0-hop only (liamcottle)
- Clamp max_hops to 63 on write since getPathHashCount() caps at 63 (robekl)
- Update comments to reflect encoding: 0=no limit, 1=direct only, N=up to N-1 hops

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-03 08:37:22 +01:00
Wouter Bijen
00566741f6 Add configurable max hops filter for auto-add contacts
Filter auto-add of new contacts by hop count (issues #1533, #1546).
Setting is configurable from the companion app via extended
CMD_SET/GET_AUTOADD_CONFIG protocol (0 = no limit, 1-63 = max hops).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-02 20:41:41 +01:00
Wessel Nieboer
8a9a0dca5f Fix GPS +8mA power leak when disabled (nRF52)
On the T114, GPS_RESET (pin 38) is the same pin as PIN_3V3_EN.
MicroNMEALocationProvider::begin() sets pin 38 HIGH (powering the 3V3
rail) but stop() never set it back LOW, leaving the GPS module powered
even when disabled.

Assert reset pin in stop() to mirror begin(), and guard
_location->loop() behind gps_active check.

Fixes meshcore-dev/MeshCore#1628
2026-02-28 19:13:42 +01:00
Wessel Nieboer
59d9770ab9 Add GPS support Heltec Wireless Tracker v1.x
Pin mapping verified against HTIT-Tracker V0.5 schematic:
- GPIO35 (GPS_EN): N-ch MOSFET drives P-ch high-side switch, active HIGH
- GPIO36 (GPS_RST): hardware reset, active LOW
- GPIO33/34: UART TX/RX

Delegates power management to MicroNMEALocationProvider begin()/stop()
which independently controls GPS power via GPS_EN and shares VEXT with
the display through RefCountedDigitalPin.
2026-02-28 19:09:28 +01:00
Wessel Nieboer
9bae9d0ed2 fix comment, we know the band now after checking LR1110 user manual 2026-02-28 19:09:25 +01:00
Wessel Nieboer
85f764a114 Calibrate configured frequency for AGC reset 2026-02-28 19:09:25 +01:00
Wessel Nieboer
f54948e06d Also implement LR11x10 AGC reset
Similar to SX126x but simpler.
2026-02-28 19:09:25 +01:00
Wessel Nieboer
b2032e11b6 make it more dry 2026-02-28 19:09:25 +01:00
Wessel Nieboer
9106ab46e1 reset noise_floor sampling after agc reset 2026-02-28 19:09:25 +01:00
Wessel Nieboer
a2dc2eb50c when doing AGC reset, call Calibrate(0x7F)
1. warm sleep
2. wake to stdby
3. Calibrate(0x7F) to reset all internal blocks
4. re-apply DIO2 RF / boosted gain & register patch to make sure
everything is as it was
2026-02-28 19:09:25 +01:00
Wessel Nieboer
f81ec4b14c fix agc reset 2026-02-28 19:09:25 +01:00
Wessel Nieboer
49d8313501 Fix pin mapping & TX switch (it's DIO2) 2026-02-28 19:09:06 +01:00
Wessel Nieboer
5a5568ed56 Drive CTX low first 2026-02-28 19:09:06 +01:00
Wessel Nieboer
ac2aa03b09 Add SX126X_REGISTER_PATCH for RAK3401 2026-02-28 19:09:06 +01:00
Wessel Nieboer
70f1ad4aeb Fix RAK3401 SKY66122-11 FEM control: enable CSD/CPS for proper PA and LNA operation
The RAK13302 1W module uses a Skyworks SKY66122-11 front-end module with
three digital control pins (CSD, CTX, CPS) that must be actively driven
by the host MCU. The previous code only managed CTX (GPIO 31) — toggling
it for TX/RX — but never initialized CSD (GPIO 24) or CPS (GPIO 21),
leaving them floating with no pull-up/pull-down resistors on the PCB.

With floating CSD and CPS, the SKY66122 was in an undefined operating
mode:
- The 30 dB TX PA may not have been reliably engaging
- The 16 dB RX LNA was never reliably active, degrading receive
sensitivity
2026-02-28 19:09:06 +01:00
Wessel Nieboer
d9e67222f5 prefs is 5 char length :nerd: 2026-02-28 19:07:38 +01:00
Wessel Nieboer
2bb6f636a4 Add 1ms delay after powering PA (cold-boot) 2026-02-28 19:05:31 +01:00
Wessel Nieboer
329e408197 Hold GC1109 PA_POWER during deep sleep for LNA RX wake
The GC1109 FEM needs its VFEM_Ctrl pin held HIGH during deep sleep
to keep the LNA active, enabling proper RX sensitivity for
wake-on-packet. Without this, the LNA is unpowered during sleep
and RX wake sensitivity is degraded by ~17dB.

Release RTC holds in begin() after configuring GPIO registers
(not before) to ensure glitch-free pin transitions on wake.

Trade-off: ~6.5mA additional sleep current for significantly
improved wake-on-packet range.
2026-02-28 19:05:31 +01:00
19 changed files with 108 additions and 41 deletions

View File

@@ -229,6 +229,7 @@ void DataStore::loadPrefsInt(const char *filename, NodePrefs& _prefs, double& no
file.read((uint8_t *)&_prefs.gps_enabled, sizeof(_prefs.gps_enabled)); // 85
file.read((uint8_t *)&_prefs.gps_interval, sizeof(_prefs.gps_interval)); // 86
file.read((uint8_t *)&_prefs.autoadd_config, sizeof(_prefs.autoadd_config)); // 87
file.read((uint8_t *)&_prefs.autoadd_max_hops, sizeof(_prefs.autoadd_max_hops)); // 88
file.close();
}
@@ -265,6 +266,7 @@ void DataStore::savePrefs(const NodePrefs& _prefs, double node_lat, double node_
file.write((uint8_t *)&_prefs.gps_enabled, sizeof(_prefs.gps_enabled)); // 85
file.write((uint8_t *)&_prefs.gps_interval, sizeof(_prefs.gps_interval)); // 86
file.write((uint8_t *)&_prefs.autoadd_config, sizeof(_prefs.autoadd_config)); // 87
file.write((uint8_t *)&_prefs.autoadd_max_hops, sizeof(_prefs.autoadd_max_hops)); // 88
file.close();
}

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@@ -318,6 +318,10 @@ bool MyMesh::shouldOverwriteWhenFull() const {
return (_prefs.autoadd_config & AUTO_ADD_OVERWRITE_OLDEST) != 0;
}
uint8_t MyMesh::getAutoAddMaxHops() const {
return _prefs.autoadd_max_hops;
}
void MyMesh::onContactOverwrite(const uint8_t* pub_key) {
_store->deleteBlobByKey(pub_key, PUB_KEY_SIZE); // delete from storage
if (_serial->isConnected()) {
@@ -1785,12 +1789,16 @@ void MyMesh::handleCmdFrame(size_t len) {
}
} else if (cmd_frame[0] == CMD_SET_AUTOADD_CONFIG) {
_prefs.autoadd_config = cmd_frame[1];
if (len >= 3) {
_prefs.autoadd_max_hops = min(cmd_frame[2], (uint8_t)64);
}
savePrefs();
writeOKFrame();
writeOKFrame();
} else if (cmd_frame[0] == CMD_GET_AUTOADD_CONFIG) {
int i = 0;
out_frame[i++] = RESP_CODE_AUTOADD_CONFIG;
out_frame[i++] = _prefs.autoadd_config;
out_frame[i++] = _prefs.autoadd_max_hops;
_serial->writeFrame(out_frame, i);
} else if (cmd_frame[0] == CMD_GET_ALLOWED_REPEAT_FREQ) {
int i = 0;

View File

@@ -119,6 +119,7 @@ protected:
bool isAutoAddEnabled() const override;
bool shouldAutoAddContactType(uint8_t type) const override;
bool shouldOverwriteWhenFull() const override;
uint8_t getAutoAddMaxHops() const override;
void onContactsFull() override;
void onContactOverwrite(const uint8_t* pub_key) override;
bool onContactPathRecv(ContactInfo& from, uint8_t* in_path, uint8_t in_path_len, uint8_t* out_path, uint8_t out_path_len, uint8_t extra_type, uint8_t* extra, uint8_t extra_len) override;

View File

@@ -30,4 +30,5 @@ struct NodePrefs { // persisted to file
uint8_t autoadd_config; // bitmask for auto-add contacts config
uint8_t client_repeat;
uint8_t path_hash_mode; // which path mode to use when sending
uint8_t autoadd_max_hops; // 0 = no limit, 1 = direct (0 hops), N = up to N-1 hops (max 64)
};

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@@ -141,6 +141,15 @@ void BaseChatMesh::onAdvertRecv(mesh::Packet* packet, const mesh::Identity& id,
return;
}
// check hop limit for new contacts (0 = no limit, 1 = direct (0 hops), N = up to N-1 hops)
uint8_t max_hops = getAutoAddMaxHops();
if (max_hops > 0 && packet->getPathHashCount() >= max_hops) {
ContactInfo ci;
populateContactFromAdvert(ci, id, parser, timestamp);
onDiscoveredContact(ci, true, packet->path_len, packet->path); // let UI know
return;
}
from = allocateContactSlot();
if (from == NULL) {
ContactInfo ci;

View File

@@ -98,6 +98,7 @@ protected:
virtual bool shouldAutoAddContactType(uint8_t type) const { return true; }
virtual void onContactsFull() {};
virtual bool shouldOverwriteWhenFull() const { return false; }
virtual uint8_t getAutoAddMaxHops() const { return 0; } // 0 = no limit, 1 = direct (0 hops), N = up to N-1 hops
virtual void onContactOverwrite(const uint8_t* pub_key) {};
virtual void onDiscoveredContact(ContactInfo& contact, bool is_new, uint8_t path_len, const uint8_t* path) = 0;
virtual ContactInfo* processAck(const uint8_t *data) = 0;

View File

@@ -766,7 +766,7 @@ void CommonCLI::handleCommand(uint32_t sender_timestamp, const char* command, ch
_prefs->advert_loc_policy = ADVERT_LOC_SHARE;
savePrefs();
strcpy(reply, "ok");
} else if (memcmp(command+11, "prefs", 4) == 0) {
} else if (memcmp(command+11, "prefs", 5) == 0) {
_prefs->advert_loc_policy = ADVERT_LOC_PREFS;
savePrefs();
strcpy(reply, "ok");

View File

@@ -707,7 +707,9 @@ void EnvironmentSensorManager::loop() {
static long next_gps_update = 0;
#if ENV_INCLUDE_GPS
_location->loop();
if (gps_active) {
_location->loop();
}
if (millis() > next_gps_update) {
if(gps_active){

View File

@@ -79,7 +79,10 @@ public :
if (_pin_en != -1) {
digitalWrite(_pin_en, !PIN_GPS_EN_ACTIVE);
}
if (_peripher_power) _peripher_power->release();
if (_pin_reset != -1) {
digitalWrite(_pin_reset, GPS_RESET_FORCE);
}
if (_peripher_power) _peripher_power->release();
}
bool isEnabled() override {

View File

@@ -32,6 +32,11 @@ build_flags =
-D PIN_TFT_LEDA_CTL=21 ; LEDK (switches on/off via mosfet to create the ground)
-D PIN_GPS_RX=33
-D PIN_GPS_TX=34
-D PIN_GPS_EN=35 ; N-ch MOSFET Q2 drives P-ch high-side switch → active HIGH (default)
-D PIN_GPS_RESET=36
-D PIN_GPS_RESET_ACTIVE=LOW
-D GPS_BAUD_RATE=115200
-D ENV_INCLUDE_GPS=1
-D SX126X_DIO2_AS_RF_SWITCH=true
-D SX126X_DIO3_TCXO_VOLTAGE=1.8
-D SX126X_CURRENT_LIMIT=140

View File

@@ -16,7 +16,8 @@ WRAPPER_CLASS radio_driver(radio, board);
ESP32RTCClock fallback_clock;
AutoDiscoverRTCClock rtc_clock(fallback_clock);
MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1);
// GPS_EN (GPIO35) drives N-ch MOSFET → P-ch high-side switch; GPS_RESET (GPIO36) active LOW
MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock, GPS_RESET, GPS_EN, &board.periph_power);
HWTSensorManager sensors = HWTSensorManager(nmea);
#ifdef DISPLAY_CLASS
@@ -58,18 +59,16 @@ mesh::LocalIdentity radio_new_identity() {
void HWTSensorManager::start_gps() {
if (!gps_active) {
board.periph_power.claim();
_location->begin(); // Claims periph_power via RefCountedDigitalPin
gps_active = true;
Serial1.println("$CFGSYS,h35155*68");
Serial1.println("$CFGSYS,h35155*68"); // Configure GPS for all constellations
}
}
void HWTSensorManager::stop_gps() {
if (gps_active) {
gps_active = false;
board.periph_power.release();
_location->stop(); // Releases periph_power via RefCountedDigitalPin
}
}

View File

@@ -28,6 +28,7 @@ public:
const char* getSettingName(int i) const override;
const char* getSettingValue(int i) const override;
bool setSettingValue(const char* name, const char* value) override;
LocationProvider* getLocationProvider() override { return _location; }
};
extern HeltecV3Board board;

View File

@@ -6,18 +6,26 @@ void HeltecTrackerV2Board::begin() {
pinMode(PIN_ADC_CTRL, OUTPUT);
digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
// Set up digital GPIO registers before releasing RTC hold. The hold latches
// the pad state including function select, so register writes accumulate
// without affecting the pad. On hold release, all changes apply atomically
// (IO MUX switches to digital GPIO with output already HIGH — no glitch).
pinMode(P_LORA_PA_POWER, OUTPUT);
digitalWrite(P_LORA_PA_POWER,HIGH);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_POWER);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
pinMode(P_LORA_PA_EN, OUTPUT);
digitalWrite(P_LORA_PA_EN,HIGH);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
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) {
delay(1); // GC1109 startup time after cold power-on
}
periph_power.begin();
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)
@@ -48,7 +56,9 @@ void HeltecTrackerV2Board::begin() {
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
// Hold GC1109 FEM pins during sleep to keep LNA active for RX wake
rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN);
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

View File

@@ -17,11 +17,11 @@ build_flags =
-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=4
-D P_LORA_PA_TX_EN=46 ;enable tx
-D LORA_TX_POWER=10 ;If it is configured as 10 here, the final output will be 22 dbm.
-D MAX_LORA_TX_POWER=22 ;Max SX1262 output
-D P_LORA_PA_POWER=7 ; VFEM_Ctrl - GC1109 LDO power enable
-D P_LORA_PA_EN=4 ; CSD - GC1109 chip enable (HIGH=on)
-D P_LORA_PA_TX_EN=46 ; CPS - GC1109 PA mode (HIGH=full PA, LOW=bypass)
-D LORA_TX_POWER=10 ; 10dBm + ~11dB GC1109 gain = ~21dBm output
-D MAX_LORA_TX_POWER=22 ; Max SX1262 output -> ~28dBm at antenna
-D SX126X_DIO2_AS_RF_SWITCH=true
-D SX126X_DIO3_TCXO_VOLTAGE=1.8
-D SX126X_CURRENT_LIMIT=140

View File

@@ -7,19 +7,26 @@ void HeltecV4Board::begin() {
pinMode(PIN_ADC_CTRL, OUTPUT);
digitalWrite(PIN_ADC_CTRL, LOW); // Initially inactive
// Set up digital GPIO registers before releasing RTC hold. The hold latches
// the pad state including function select, so register writes accumulate
// without affecting the pad. On hold release, all changes apply atomically
// (IO MUX switches to digital GPIO with output already HIGH — no glitch).
pinMode(P_LORA_PA_POWER, OUTPUT);
digitalWrite(P_LORA_PA_POWER,HIGH);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_POWER);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
pinMode(P_LORA_PA_EN, OUTPUT);
digitalWrite(P_LORA_PA_EN,HIGH);
rtc_gpio_hold_dis((gpio_num_t)P_LORA_PA_EN);
pinMode(P_LORA_PA_TX_EN, OUTPUT);
digitalWrite(P_LORA_PA_TX_EN,LOW);
esp_reset_reason_t reason = esp_reset_reason();
if (reason != ESP_RST_DEEPSLEEP) {
delay(1); // GC1109 startup time after cold power-on
}
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)
@@ -50,7 +57,9 @@ void HeltecV4Board::begin() {
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
// Hold GC1109 FEM pins during sleep to keep LNA active for RX wake
rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_POWER);
rtc_gpio_hold_en((gpio_num_t)P_LORA_PA_EN);
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

View File

@@ -20,13 +20,29 @@ void RAK3401Board::begin() {
Wire.begin();
// PIN_3V3_EN (WB_IO2, P0.34) controls the 3V3_S switched peripheral rail
// AND the 5V boost regulator (U5) on the RAK13302 that powers the SKY66122 PA.
// Must stay HIGH during radio operation — do not toggle for power saving.
pinMode(PIN_3V3_EN, OUTPUT);
digitalWrite(PIN_3V3_EN, HIGH);
#ifdef P_LORA_PA_EN
// Initialize RAK13302 1W LoRa transceiver module PA control pin
pinMode(P_LORA_PA_EN, OUTPUT);
digitalWrite(P_LORA_PA_EN, LOW); // Start with PA disabled
delay(10); // Allow PA module to initialize
// Enable SKY66122-11 FEM on the RAK13302 module.
// CSD and CPS are tied together on the RAK13302 PCB, routed to IO3 (P0.21).
// HIGH = FEM active (LNA for RX, PA path available for TX).
// TX/RX switching (CTX) is handled by SX1262 DIO2 via SetDIO2AsRfSwitchCtrl.
pinMode(SX126X_POWER_EN, OUTPUT);
digitalWrite(SX126X_POWER_EN, HIGH);
delay(1); // SKY66122 turn-on settling time (tON = 3us typ)
}
#ifdef NRF52_POWER_MANAGEMENT
void RAK3401Board::initiateShutdown(uint8_t reason) {
// Disable SKY66122 FEM (CSD+CPS LOW = shutdown, <1 uA)
digitalWrite(SX126X_POWER_EN, LOW);
// Disable 3V3 switched peripherals and 5V boost
digitalWrite(PIN_3V3_EN, LOW);
enterSystemOff(reason);
}
#endif
}

View File

@@ -38,13 +38,6 @@ public:
return "RAK 3401";
}
#ifdef P_LORA_PA_EN
void onBeforeTransmit() override {
digitalWrite(P_LORA_PA_EN, HIGH); // Enable PA before transmission
}
void onAfterTransmit() override {
digitalWrite(P_LORA_PA_EN, LOW); // Disable PA after transmission to save power
}
#endif
// TX/RX switching is handled by SX1262 DIO2 -> SKY66122 CTX (hardware-timed).
// No onBeforeTransmit/onAfterTransmit overrides needed.
};

View File

@@ -11,6 +11,7 @@ build_flags = ${nrf52_base.build_flags}
-D LORA_TX_POWER=22
-D SX126X_CURRENT_LIMIT=140
-D SX126X_RX_BOOSTED_GAIN=1
-D SX126X_REGISTER_PATCH=1 ; Patch register 0x8B5 for improved RX with SKY66122 FEM
build_src_filter = ${nrf52_base.build_src_filter}
+<../variants/rak3401>
+<helpers/sensors>

View File

@@ -147,8 +147,15 @@ static const uint8_t AREF = PIN_AREF;
#define SX126X_BUSY (9)
#define SX126X_RESET (4)
#define SX126X_POWER_EN (21)
// DIO2 controlls an antenna switch and the TCXO voltage is controlled by DIO3
// SKY66122-11 FEM control on the RAK13302 module:
// CSD + CPS are tied together on the PCB, routed to WisBlock IO3 (P0.21).
// Setting IO3 HIGH enables the FEM (LNA for RX, PA path for TX).
// CTX is connected to SX1262 DIO2 — the radio handles TX/RX switching
// in hardware via SetDIO2AsRfSwitchCtrl (microsecond-accurate, no GPIO needed).
// The 5V boost for the PA is enabled by WB_IO2 (P0.34 = PIN_3V3_EN).
#define SX126X_POWER_EN (21) // P0.21 = IO3 -> SKY66122 CSD+CPS (FEM enable)
// CTX is driven by SX1262 DIO2, not a GPIO
#define SX126X_DIO2_AS_RF_SWITCH
#define SX126X_DIO3_TCXO_VOLTAGE 1.8
@@ -159,7 +166,6 @@ static const uint8_t AREF = PIN_AREF;
#define P_LORA_DIO_1 SX126X_DIO1
#define P_LORA_BUSY SX126X_BUSY
#define P_LORA_RESET SX126X_RESET
#define P_LORA_PA_EN 31
// enables 3.3V periphery like GPS or IO Module
// Do not toggle this for GPS power savings