Add T-Beam BPF (144-148 Mhz LoRa)

boards/t-beam-bpf.json

@@ -0,0 +1,39 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "esp32s3_out.ld",
+      "memory_type": "qio_opi"
+    },
+    "core": "esp32",
+    "extra_flags": [
+      "-DBOARD_HAS_PSRAM",
+      "-DLILYGO_TBEAM_BPF",
+      "-DARDUINO_USB_CDC_ON_BOOT=1",
+      "-DARDUINO_USB_MODE=0",
+      "-DARDUINO_RUNNING_CORE=1",
+      "-DARDUINO_EVENT_RUNNING_CORE=1"
+    ],
+    "f_cpu": "240000000L",
+    "f_flash": "80000000L",
+    "flash_mode": "qio",
+    "psram_type": "opi",
+    "hwids": [["0x303A", "0x1001"]],
+    "mcu": "esp32s3",
+    "variant": "t-beam-bpf"
+  },
+  "connectivity": ["wifi", "bluetooth", "lora"],
+  "debug": {
+    "openocd_target": "esp32s3.cfg"
+  },
+  "frameworks": ["arduino"],
+  "name": "LilyGo TBeam-BPF",
+  "upload": {
+    "flash_size": "16MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 16777216,
+    "require_upload_port": true,
+    "speed": 921600
+  },
+  "url": "http://www.lilygo.cn/",
+  "vendor": "LilyGo"
+}

src/mesh/RF95Interface.cpp

@@ -113,6 +113,11 @@ void RF95Interface::setTransmitEnable(bool txon)
 /// \return true if initialisation succeeded.
 bool RF95Interface::init()
 {
+#ifdef RF95_POWER_EN
+    digitalWrite(RF95_POWER_EN, HIGH);
+    pinMode(RF95_POWER_EN, OUTPUT);
+#endif
+
     RadioLibInterface::init();
 
 #if defined(RADIOMASTER_900_BANDIT_NANO) || defined(RADIOMASTER_900_BANDIT)
@@ -336,6 +341,10 @@ bool RF95Interface::sleep()
     setStandby(); // First cancel any active receiving/sending
     lora->sleep();
 
+#ifdef RF95_POWER_EN
+    digitalWrite(RF95_POWER_EN, LOW);
+#endif
+
 #ifdef RF95_FAN_EN
     digitalWrite(RF95_FAN_EN, 0);
 #endif

src/platform/esp32/architecture.h

@@ -194,6 +194,9 @@
 #define HW_VENDOR meshtastic_HardwareModel_T_DECK_PRO
 #elif defined(T_BEAM_1W)
 #define HW_VENDOR meshtastic_HardwareModel_TBEAM_1_WATT
+// Awaiting protobuf merge
+// #elif defined(T_BEAM_BPF)
+// #define HW_VENDOR meshtastic_HardwareModel_TBEAM_BPF
 #elif defined(T_LORA_PAGER)
 #define HW_VENDOR meshtastic_HardwareModel_T_LORA_PAGER
 #elif defined(HELTEC_V4)

variants/esp32s3/t-beam-bpf/pins_arduino.h

@@ -0,0 +1,26 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define USB_VID 0x303a
+#define USB_PID 0x1001
+
+// UART1 (qwiic)
+static const uint8_t TX = 43;
+static const uint8_t RX = 44;
+
+// I2C for OLED and sensors
+static const uint8_t SDA = 8;
+static const uint8_t SCL = 9;
+
+// Default SPI mapped to Radio/SD
+static const uint8_t SS = 15; // LoRa CS
+static const uint8_t MOSI = 11;
+static const uint8_t MISO = 13;
+static const uint8_t SCK = 12;
+
+// SD Card CS
+#define SDCARD_CS 10
+
+#endif /* Pins_Arduino_h */

variants/esp32s3/t-beam-bpf/platformio.ini

@@ -0,0 +1,23 @@
+; LilyGo T-Beam-BPF (144-148Mhz)
+[env:t-beam-bpf]
+custom_meshtastic_hw_model = 124
+custom_meshtastic_hw_model_slug = TBEAM_BPF
+custom_meshtastic_architecture = esp32s3
+custom_meshtastic_actively_supported = true
+custom_meshtastic_support_level = 3
+custom_meshtastic_display_name = LILYGO T-Beam BPF
+custom_meshtastic_images = tbeam-1w.svg
+custom_meshtastic_tags = LilyGo
+
+extends = esp32s3_base
+board = t-beam-bpf
+board_build.partitions = default_16MB.csv
+board_check = true
+
+lib_deps =
+  ${esp32s3_base.lib_deps}
+
+build_flags = 
+  ${esp32s3_base.build_flags} 
+  -I variants/esp32s3/t-beam-bpf
+  -D T_BEAM_BPF

variants/esp32s3/t-beam-bpf/variant.h

@@ -0,0 +1,65 @@
+// LilyGo T-Beam-BPF variant.h
+// Configuration based on LilyGO utilities.h and RF documentation
+
+// TODO Lock to 2M (144mhz) ham "region"
+// #define REGULATORY_LORA_REGIONCODE meshtastic_Config_LoRaConfig_RegionCode_HAM_2M
+
+// I2C for OLED display (SH1106 at 0x3C)
+#define I2C_SDA 8
+#define I2C_SCL 9
+
+// GPS - Quectel L76K
+#define GPS_RX_PIN 5
+#define GPS_TX_PIN 6
+#define GPS_1PPS_PIN 7
+#define HAS_GPS 1
+#define GPS_BAUDRATE 9600
+
+// Buttons
+#define BUTTON_PIN 0     // BUTTON 1
+#define ALT_BUTTON_PIN 3 // BUTTON 2
+
+// SPI (shared by LoRa and SD)
+#define SPI_MOSI 11
+#define SPI_SCK 12
+#define SPI_MISO 13
+#define SPI_CS 10
+
+// SD Card
+#define HAS_SDCARD
+#define SDCARD_USE_SPI1
+#define SDCARD_CS SPI_CS
+
+// LoRa Radio - SX1278 144-148Mhz
+#define USE_RF95
+#define LORA_SCK SPI_SCK
+#define LORA_MISO SPI_MISO
+#define LORA_MOSI SPI_MOSI
+#define LORA_CS 1
+#define LORA_RESET 18
+#define LORA_IRQ 14
+#define LORA_DIO0 LORA_IRQ
+#define LORA_DIO1 21
+#define RF95_RXEN 39 // LNA enable - HIGH during RX
+
+// CRITICAL: Radio power enable - MUST be HIGH before lora.begin()!
+// GPIO 16 powers the SX1278 via LDO
+#define RF95_POWER_EN 16
+
+// "+27dBm"? PA! Investigate further (poorly documented)
+// LilyGo Docs specify SX1278 power must be capped at 10
+#define RF95_MAX_POWER 10
+// TODO map PA output curve
+// #define TX_GAIN_LORA 17
+
+// Display - SH1106 OLED (128x64)
+#define USE_SH1106
+#define OLED_WIDTH 128
+#define OLED_HEIGHT 64
+
+// 32768 Hz crystal present
+#define HAS_32768HZ 1
+
+// PMU
+#define HAS_AXP2101
+// #define PMU_IRQ 4 // Leave disabled for now