Add MuziWorks Base Duo board support (nRF52840 + LR1121)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: Vladimir Zaytsev

boards/muziworks-duo.json

@@ -0,0 +1,59 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v6.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_MUZIWORKS_DUO -DNRF52840_XXAA",
+    "f_cpu": "64000000L",
+    "hwids": [
+      ["0x239A", "0x8029"],
+      ["0x239A", "0x0029"],
+      ["0x239A", "0x002A"],
+      ["0x239A", "0x802A"]
+    ],
+    "usb_product": "MuziWorks-Duo-BOOT",
+    "mcu": "nrf52840",
+    "variant": "muziworks_duo",
+    "bsp": {
+      "name": "adafruit"
+    },
+    "softdevice": {
+      "sd_flags": "-DS140",
+      "sd_name": "s140",
+      "sd_version": "6.1.1",
+      "sd_fwid": "0x00B6"
+    },
+    "bootloader": {
+      "settings_addr": "0xFF000"
+    }
+  },
+  "connectivity": ["bluetooth"],
+  "debug": {
+    "jlink_device": "nRF52840_xxAA",
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52.cfg"
+  },
+  "frameworks": ["arduino"],
+  "name": "MuziWorks Base Duo",
+  "upload": {
+    "maximum_ram_size": 235520,
+    "maximum_size": 811008,
+    "speed": 115200,
+    "protocol": "nrfutil",
+    "protocols": [
+      "jlink",
+      "nrfjprog",
+      "nrfutil",
+      "stlink",
+      "cmsis-dap",
+      "blackmagic"
+    ],
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://www.muziworks.com",
+  "vendor": "MuziWorks"
+}

src/helpers/radiolib/CustomLR1121.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <RadioLib.h>
+#include "MeshCore.h"
+
+class CustomLR1121 : public LR1121 {
+  bool _rx_boosted = false;
+
+  public:
+    CustomLR1121(Module *mod) : LR1121(mod) { }
+
+    size_t getPacketLength(bool update) override {
+      size_t len = LR1121::getPacketLength(update);
+      if (len == 0 && getIrqStatus() & RADIOLIB_LR11X0_IRQ_HEADER_ERR) {
+        MESH_DEBUG_PRINTLN("LR1121: got header err, calling standby()");
+        standby();
+      }
+      return len;
+    }
+
+    float getFreqMHz() const { return freqMHz; }
+
+    int16_t setRxBoostedGainMode(bool en) {
+      _rx_boosted = en;
+      return LR1121::setRxBoostedGainMode(en);
+    }
+
+    bool getRxBoostedGainMode() const { return _rx_boosted; }
+
+    bool isReceiving() {
+      uint16_t irq = getIrqStatus();
+      bool detected = ((irq & RADIOLIB_LR11X0_IRQ_SYNC_WORD_HEADER_VALID) || (irq & RADIOLIB_LR11X0_IRQ_PREAMBLE_DETECTED));
+      return detected;
+    }
+};

src/helpers/radiolib/CustomLR1121Wrapper.h

@@ -0,0 +1,34 @@
+#pragma once
+
+#include "CustomLR1121.h"
+#include "RadioLibWrappers.h"
+#include "LR11x0Reset.h"
+
+class CustomLR1121Wrapper : public RadioLibWrapper {
+public:
+  CustomLR1121Wrapper(CustomLR1121& radio, mesh::MainBoard& board) : RadioLibWrapper(radio, board) { }
+  void doResetAGC() override { lr11x0ResetAGC((LR11x0 *)_radio, ((CustomLR1121 *)_radio)->getFreqMHz()); }
+  bool isReceivingPacket() override {
+    return ((CustomLR1121 *)_radio)->isReceiving();
+  }
+  float getCurrentRSSI() override {
+    float rssi = -110;
+    ((CustomLR1121 *)_radio)->getRssiInst(&rssi);
+    return rssi;
+  }
+
+  void onSendFinished() override {
+    RadioLibWrapper::onSendFinished();
+    _radio->setPreambleLength(16); // overcomes weird issues with small and big pkts
+  }
+
+  float getLastRSSI() const override { return ((CustomLR1121 *)_radio)->getRSSI(); }
+  float getLastSNR() const override { return ((CustomLR1121 *)_radio)->getSNR(); }
+
+  void setRxBoostedGainMode(bool en) override {
+    ((CustomLR1121 *)_radio)->setRxBoostedGainMode(en);
+  }
+  bool getRxBoostedGainMode() const override {
+    return ((CustomLR1121 *)_radio)->getRxBoostedGainMode();
+  }
+};

variants/muziworks_duo/MuziWorksDuoBoard.cpp

@@ -0,0 +1,28 @@
+#ifdef MUZIWORKS_DUO
+
+#include "MuziWorksDuoBoard.h"
+
+#include <Arduino.h>
+#include <Wire.h>
+
+void MuziWorksDuoBoard::begin() {
+  NRF52BoardDCDC::begin();
+
+  pinMode(PIN_VBAT_READ, INPUT);
+  pinMode(LED_GREEN, OUTPUT);
+  pinMode(LED_BLUE, OUTPUT);
+
+  // LEDs off (active LOW)
+  digitalWrite(LED_GREEN, !LED_STATE_ON);
+  digitalWrite(LED_BLUE, LED_STATE_ON);
+
+#if defined(PIN_WIRE_SDA) && defined(PIN_WIRE_SCL)
+  Wire.setPins(PIN_WIRE_SDA, PIN_WIRE_SCL);
+#endif
+
+  Wire.begin();
+
+  delay(10);
+}
+
+#endif

variants/muziworks_duo/MuziWorksDuoBoard.h

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <MeshCore.h>
+#include <Arduino.h>
+#include <helpers/NRF52Board.h>
+
+#ifdef MUZIWORKS_DUO
+
+#define PIN_VBAT_READ       BATTERY_PIN
+#define BATTERY_SAMPLES     8
+
+class MuziWorksDuoBoard : public NRF52BoardDCDC {
+public:
+  MuziWorksDuoBoard() : NRF52Board("MuziWorksDuo_OTA") {}
+  void begin();
+
+  uint16_t getBattMilliVolts() override {
+    analogReadResolution(12);
+
+    uint32_t raw = 0;
+    for (int i = 0; i < BATTERY_SAMPLES; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / BATTERY_SAMPLES;
+    return (ADC_MULTIPLIER * raw);
+  }
+
+  const char* getManufacturerName() const override {
+    return "MuziWorks Duo";
+  }
+
+#if defined(LED_GREEN)
+  void onBeforeTransmit() override {
+    digitalWrite(LED_GREEN, LED_STATE_ON);
+  }
+  void onAfterTransmit() override {
+    digitalWrite(LED_GREEN, !LED_STATE_ON);
+  }
+#endif
+};
+
+#endif

variants/muziworks_duo/platformio.ini

@@ -0,0 +1,113 @@
+; ----------------- MuziWorks Base Duo (nRF52840 + LR1121) ---------------------
+[muziworks_duo]
+extends = nrf52_base
+board = muziworks-duo
+board_build.ldscript = boards/nrf52840_s140_v6.ld
+build_flags = ${nrf52_base.build_flags}
+  ${sensor_base.build_flags}
+  -I src/helpers/nrf52
+  -I lib/nrf52/s140_nrf52_6.1.1_API/include
+  -I lib/nrf52/s140_nrf52_6.1.1_API/include/nrf52
+  -I variants/muziworks_duo
+  -D NRF52_PLATFORM
+  -D MUZIWORKS_DUO
+  -D ENV_INCLUDE_GPS=0
+  -D CONFIG_NFCT_PINS_AS_GPIOS=1
+  -D RADIO_CLASS=CustomLR1121
+  -D WRAPPER_CLASS=CustomLR1121Wrapper
+  -D LORA_TX_POWER=22
+  -D MAX_LORA_TX_POWER=22
+  -D RX_BOOSTED_GAIN=true
+  -D RF_SWITCH_TABLE
+  -D P_LORA_DIO_1=40
+  -D P_LORA_RESET=42
+  -D P_LORA_BUSY=43
+  -D P_LORA_NSS=44
+  -D P_LORA_SCLK=45
+  -D P_LORA_MOSI=46
+  -D P_LORA_MISO=47
+  -D LR11X0_DIO_AS_RF_SWITCH=true
+  -D LR11X0_DIO3_TCXO_VOLTAGE=3.0
+build_src_filter = ${nrf52_base.build_src_filter}
+  +<helpers/*.cpp>
+  +<helpers/sensors>
+  +<../variants/muziworks_duo>
+debug_tool = jlink
+upload_protocol = nrfutil
+lib_deps = ${nrf52_base.lib_deps}
+  ${sensor_base.lib_deps}
+
+[env:muziworks_duo_repeater]
+extends = muziworks_duo
+build_flags =
+  ${muziworks_duo.build_flags}
+  -D ADVERT_NAME='"MuziDuo Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+build_src_filter = ${muziworks_duo.build_src_filter}
+  +<../examples/simple_repeater/*.cpp>
+
+[env:muziworks_duo_room_server]
+extends = muziworks_duo
+build_flags =
+  ${muziworks_duo.build_flags}
+  -D ADVERT_NAME='"MuziDuo Room"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+build_src_filter = ${muziworks_duo.build_src_filter}
+  +<../examples/simple_room_server/*.cpp>
+
+[env:muziworks_duo_companion_radio_usb]
+extends = muziworks_duo
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 708608
+build_flags =
+  ${muziworks_duo.build_flags}
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=256
+build_src_filter = ${muziworks_duo.build_src_filter}
+  +<helpers/nrf52/*.cpp>
+  +<../examples/companion_radio/*.cpp>
+lib_deps =
+  ${muziworks_duo.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:muziworks_duo_terminal_chat]
+extends = muziworks_duo
+build_flags =
+  ${muziworks_duo.build_flags}
+  -D ADVERT_NAME='"MuziDuo Chat"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D ROOM_PASSWORD='"hello"'
+  -D MAX_CONTACTS=100
+  -D MAX_GROUP_CHANNELS=8
+build_src_filter = ${muziworks_duo.build_src_filter}
+  +<../examples/simple_secure_chat/main.cpp>
+lib_deps =
+  ${muziworks_duo.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:muziworks_duo_companion_radio_ble]
+extends = muziworks_duo
+board_build.ldscript = boards/nrf52840_s140_v6_extrafs.ld
+board_upload.maximum_size = 708608
+build_flags =
+  ${muziworks_duo.build_flags}
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D BLE_PIN_CODE=123456
+  -D QSPIFLASH=1
+  -D OFFLINE_QUEUE_SIZE=256
+build_src_filter = ${muziworks_duo.build_src_filter}
+  +<helpers/nrf52/SerialBLEInterface.cpp>
+  +<../examples/companion_radio/*.cpp>
+lib_deps =
+  ${muziworks_duo.lib_deps}
+  densaugeo/base64 @ ~1.4.0