Add support for new NRF52 board, MeshLink

boards/meshlink.json

@@ -0,0 +1,52 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v6.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_NRF52840_FEATHER -DNRF52840_XXAA",
+    "f_cpu": "64000000L",
+    "hwids": [
+      ["0x239A", "0x00B3"],
+      ["0x239A", "0x8029"],
+      ["0x239A", "0x0029"],
+      ["0x239A", "0x002A"],
+      ["0x239A", "0x802A"]
+    ],
+    "usb_product": "MeshLink",
+    "mcu": "nrf52840",
+    "variant": "meshlink",
+    "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"
+  },
+  "frameworks": ["arduino"],
+  "name": "MeshLink",
+  "upload": {
+    "maximum_ram_size": 248832,
+    "maximum_size": 815104,
+    "speed": 115200,
+    "protocol": "nrfutil",
+    "protocols": ["nrfutil", "jlink", "nrfjprog", "stlink"],
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://www.loraitalia.it",
+  "vendor": "LoraItalia"
+}

src/graphics/EInkDisplay2.cpp

@@ -140,6 +140,15 @@ bool EInkDisplay::connect()
         adafruitDisplay->setRotation(3);
         adafruitDisplay->setPartialWindow(0, 0, displayWidth, displayHeight);
     }
+#elif defined(MESHLINK)
+    {
+        auto lowLevel = new EINK_DISPLAY_MODEL(PIN_EINK_CS, PIN_EINK_DC, PIN_EINK_RES, PIN_EINK_BUSY, SPI1);
+
+        adafruitDisplay = new GxEPD2_BW<EINK_DISPLAY_MODEL, EINK_DISPLAY_MODEL::HEIGHT>(*lowLevel);
+        adafruitDisplay->init();
+        adafruitDisplay->setRotation(3);
+        adafruitDisplay->setPartialWindow(0, 0, displayWidth, displayHeight);
+    }
 #elif defined(RAK4630) || defined(MAKERPYTHON)
     {
         if (eink_found) {

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

@@ -223,6 +223,8 @@ typedef enum _meshtastic_HardwareModel {
     /* Mesh-Tab, esp32 based
  https://github.com/valzzu/Mesh-Tab */
     meshtastic_HardwareModel_MESH_TAB = 86,
+    /*MeshLink board developed by LoraItalia. NRF52840, eByte E22900M22S (Will also come with other frequencies), 25w MPPT solar charger (5v,12v,18v selectable), support for gps, buzzer, oled or e-ink display, 10 gpios, hardware watchdog*/
+    meshtastic_HardwareModel_MESHLINK = 87,
     /* ------------------------------------------------------------------------------------------------------------------------------------------
  Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.
  ------------------------------------------------------------------------------------------------------------------------------------------ */

src/modules/SerialModule.cpp

@@ -60,7 +60,7 @@
 SerialModule *serialModule;
 SerialModuleRadio *serialModuleRadio;
 
-#if defined(TTGO_T_ECHO) || defined(CANARYONE)
+#if defined(TTGO_T_ECHO) || defined(CANARYONE) || defined(MESHLINK)
 SerialModule::SerialModule() : StreamAPI(&Serial), concurrency::OSThread("Serial") {}
 static Print *serialPrint = &Serial;
 #elif defined(CONFIG_IDF_TARGET_ESP32C6)
@@ -158,7 +158,7 @@ int32_t SerialModule::runOnce()
                 Serial.begin(baud);
                 Serial.setTimeout(moduleConfig.serial.timeout > 0 ? moduleConfig.serial.timeout : TIMEOUT);
             }
-#elif !defined(TTGO_T_ECHO) && !defined(CANARYONE)
+#elif !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(MESHLINK)
             if (moduleConfig.serial.rxd && moduleConfig.serial.txd) {
 #ifdef ARCH_RP2040
                 Serial2.setFIFOSize(RX_BUFFER);
@@ -214,7 +214,7 @@ int32_t SerialModule::runOnce()
                 }
             }
 
-#if !defined(TTGO_T_ECHO) && !defined(CANARYONE)
+#if !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(MESHLINK)
             else if ((moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_WS85)) {
                 processWXSerial();
 
@@ -416,7 +416,7 @@ uint32_t SerialModule::getBaudRate()
  */
 void SerialModule::processWXSerial()
 {
-#if !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6)
+#if !defined(TTGO_T_ECHO) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6) && !defined(MESHLINK)
     static unsigned int lastAveraged = 0;
     static unsigned int averageIntervalMillis = 300000; // 5 minutes hard coded.
     static double dir_sum_sin = 0;

src/platform/nrf52/architecture.h

@@ -75,6 +75,8 @@
 #define HW_VENDOR meshtastic_HardwareModel_PRIVATE_HW
 #elif defined(HELTEC_T114)
 #define HW_VENDOR meshtastic_HardwareModel_HELTEC_MESH_NODE_T114
+#elif defined(MESHLINK)
+#define HW_VENDOR meshtastic_HardwareModel_MESHLINK
 #else
 #define HW_VENDOR meshtastic_HardwareModel_NRF52_UNKNOWN
 #endif

src/platform/nrf52/main-nrf52.cpp

@@ -254,6 +254,11 @@ void cpuDeepSleep(uint32_t msecToWake)
     nrf_gpio_cfg_default(WB_I2C1_SDA);
 #endif
 #endif
+#ifdef MESHLINK
+#ifdef PIN_3V3_EN
+    digitalWrite(PIN_3V3_EN, LOW);
+#endif
+#endif
 
 #ifdef HELTEC_MESH_NODE_T114
     nrf_gpio_cfg_default(PIN_GPS_PPS);

variants/meshlink/platformio.ini

@@ -0,0 +1,128 @@
+; The very slick RAK wireless RAK 4631 / 4630 board - Unified firmware for 5005/19003, with or without OLED RAK 1921
+[env:meshlink]
+extends = nrf52840_base
+board = meshlink
+;board_check = true
+build_flags = ${nrf52840_base.build_flags} -I variants/meshlink -D MESHLINK
+  -L "${platformio.libdeps_dir}/${this.__env__}/bsec2/src/cortex-m4/fpv4-sp-d16-hard"
+  -D GPS_POWER_TOGGLE ; comment this line to disable triple press function on the user button to turn off gps entirely.
+  -D EINK_DISPLAY_MODEL=GxEPD2_213_B74
+  -D EINK_WIDTH=250
+  -D EINK_HEIGHT=122
+  -D USE_EINK_DYNAMICDISPLAY            ; Enable Dynamic EInk
+  -D EINK_LIMIT_FASTREFRESH=5           ; How many consecutive fast-refreshes are permitted
+  -D EINK_LIMIT_RATE_BACKGROUND_SEC=30  ; Minimum interval between BACKGROUND updates
+  -D EINK_LIMIT_RATE_RESPONSIVE_SEC=1   ; Minimum interval between RESPONSIVE updates
+  -D EINK_LIMIT_GHOSTING_PX=2000        ; (Optional) How much image ghosting is tolerated
+  -D EINK_BACKGROUND_USES_FAST         ; (Optional) Use FAST refresh for both BACKGROUND and RESPONSIVE, until a limit is reached.
+  -D EINK_HASQUIRK_VICIOUSFASTREFRESH   ; Identify that pixels drawn by fast-refresh are harder to clear
+
+
+build_src_filter = ${nrf52_base.build_src_filter} +<../variants/meshlink>
+lib_deps = 
+  ${nrf52840_base.lib_deps}
+  https://github.com/meshtastic/GxEPD2#55f618961db45a23eff0233546430f1e5a80f63a
+  melopero/Melopero RV3028@^1.1.0
+  rakwireless/RAKwireless NCP5623 RGB LED library@^1.0.2
+  beegee-tokyo/RAKwireless RAK12034@^1.0.0
+debug_tool = jlink
+
+
+
+; If not set we will default to uploading over serial (first it forces bootloader entry by talking 1200bps to cdcacm)
+; Note: as of 6/2013 the serial/bootloader based programming takes approximately 30 seconds
+;upload_protocol = jlink
+
+; Allows programming and debug via the RAK NanoDAP as the default debugger tool for the RAK4631 (it is only $10!)
+; programming time is about the same as the bootloader version.
+; For information on this see the meshtastic developers documentation for "Development on the NRF52"
+[env:meshlink_dbg]
+extends = env:meshlink
+board_level = extra
+
+; if the builtin version of openocd has a buggy version of semihosting, so use the external version
+; platform_packages = platformio/tool-openocd@^3.1200.0
+
+build_flags =
+  ${env:meshlink.build_flags}
+  -D USE_SEMIHOSTING
+
+lib_deps =
+  ${env:meshlink.lib_deps}
+  https://github.com/geeksville/Armduino-Semihosting.git#35b538fdf208c3530c1434cd099a08e486672ee4
+
+; NOTE: the pyocd support for semihosting is buggy.  So I switched to using the builtin platformio support for the stlink adapter which worked much better.
+; However the built in openocd version in platformio has buggy support for TCP to semihosting. 
+;
+; So I'm now trying the external openocd - but the openocd scripts for nrf52.cfg assume you are using a DAP adapter not an STLINK adapter.
+; In theory I could change those scripts.  But for now I'm trying going back to a DAP adapter but with the external openocd.
+
+upload_protocol = stlink
+; eventually use platformio/tool-pyocd@^2.3600.0 instad
+;upload_protocol = custom
+;upload_command = pyocd flash -t nrf52840 $UPLOADERFLAGS $SOURCE
+
+; We want the initial breakpoint at setup() instead of main().  Also we want to enable semihosting at that point so instead of
+; debug_init_break = tbreak setup
+; we just turn off the platformio tbreak and do it in .gdbinit (where we have more flexibility for scripting)
+; also we use a permanent breakpoint so it gets reused each time we restart the debugging session?
+debug_init_break = tbreak setup
+
+; Note: add "monitor arm semihosting_redirect tcp 4444 all" if you want the stdout from the device to go to that port number instead
+; (for use by meshtastic command line)
+;  monitor arm semihosting disable
+;  monitor debug_level 3
+;
+; IMPORTANT: fileio must be disabled before using port 5555 - openocd ver 0.12 has a bug where if enabled it never properly parses the special :tt name
+; for stdio access.
+;   monitor arm semihosting_redirect tcp 5555 stdio
+
+; Also note: it is _impossible_ to do non blocking reads on the semihost console port (an oversight when ARM specified the semihost API).
+; So we'll neve be able to general purpose bi-directional communication with the device over semihosting.
+debug_extra_cmds =
+  echo Running .gdbinit script
+  monitor arm semihosting enable
+  monitor arm semihosting_fileio enable
+  monitor arm semihosting_redirect disable
+  commands 1
+  echo Breakpoint at setup() has semihosting console, connect to it with "telnet localhost 5555"
+  set wantSemihost = true
+  set useSoftDevice = false
+  end
+
+
+; Only reprogram the board if the code has changed
+debug_load_mode = modified
+;debug_load_mode = manual
+debug_tool = stlink
+;debug_tool = custom
+; debug_server =
+;  openocd
+;  -f
+;  /usr/local/share/openocd/scripts/interface/stlink.cfg
+;  -f
+;  /usr/local/share/openocd/scripts/target/nrf52.cfg
+; $PLATFORMIO_CORE_DIR/packages/tool-openocd/openocd/scripts/interface/cmsis-dap.cfg
+
+; Allows programming and debug via the RAK NanoDAP as the default debugger tool for the RAK4631 (it is only $10!)
+; programming time is about the same as the bootloader version.
+; For information on this see the meshtastic developers documentation for "Development on the NRF52"
+; We manually pass in the elf file so that pyocd can reverse engineer FreeRTOS data (running threads, etc...)
+;debug_server =
+;  pyocd
+;  gdbserver
+;  -j
+;  ${platformio.workspace_dir}/..
+;  -t
+;  nrf52840
+;  --semihosting
+;  --elf
+;  ${platformio.build_dir}/${this.__env__}/firmware.elf
+
+; If you want to debug the semihosting support you can turn on extra logging in pyocd with
+;   -L
+;   pyocd.debug.semihost.trace=debug
+
+; The following is not needed because it automatically tries do this
+;debug_server_ready_pattern = -.*GDB server started on port \d+.*
+;debug_port = localhost:3333

variants/meshlink/variant.cpp

@@ -0,0 +1,56 @@
+/*
+  Copyright (c) 2014-2015 Arduino LLC.  All right reserved.
+  Copyright (c) 2016 Sandeep Mistry All right reserved.
+  Copyright (c) 2018, Adafruit Industries (adafruit.com)
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#include "variant.h"
+#include "nrf.h"
+#include "wiring_constants.h"
+#include "wiring_digital.h"
+
+const uint32_t g_ADigitalPinMap[] = {
+    // P0
+    0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+
+    // P1
+    32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47};
+
+void initVariant()
+{
+    // LED1 & LED2
+    //pinMode(PIN_LED1, OUTPUT);
+    //ledOff(PIN_LED1);
+
+    //pinMode(PIN_LED2, OUTPUT);
+    //ledOff(PIN_LED2);
+    //pinMode(PIN_LED1, OUTPUT);
+    //digitalWrite(PIN_LED1, LOW);
+    pinMode(24,OUTPUT);
+    digitalWrite(24, HIGH);
+    //pinMode(25,OUTPUT);
+    //digitalWrite(25, HIGH);
+
+    // 3V3 Power Rail
+    pinMode(PIN_3V3_EN, OUTPUT);
+    digitalWrite(PIN_3V3_EN, HIGH);
+    //pinMode(PIN_GPS_EN, OUTPUT);
+    //digitalWrite(PIN_GPS_EN, HIGH);
+    //pinMode(GPS_TX_PIN, OUTPUT);
+    //pinMode(GPS_RX_PIN, INPUT_PULLUP);
+
+}