GPS fix for M4

boards/ThinkNode-M4.json

@@ -0,0 +1,53 @@
+{
+  "build": {
+    "arduino": {
+      "ldscript": "nrf52840_s140_v6.ld"
+    },
+    "core": "nRF5",
+    "cpu": "cortex-m4",
+    "extra_flags": "-DARDUINO_NRF52840_ELECROW_M4 -DNRF52840_XXAA",
+    "f_cpu": "64000000L",
+    "hwids": [
+      ["0x239A", "0x4405"],
+      ["0x239A", "0x0029"],
+      ["0x239A", "0x002A"]
+    ],
+    "usb_product": "elecrow_thinknode_m4",
+    "mcu": "nrf52840",
+    "variant": "ELECROW-ThinkNode-M4",
+    "variants_dir": "variants",
+    "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",
+    "onboard_tools": ["jlink"],
+    "svd_path": "nrf52840.svd",
+    "openocd_target": "nrf52840-mdk-rs"
+  },
+  "frameworks": ["arduino"],
+  "name": "ELECROW ThinkNode m4",
+  "upload": {
+    "maximum_ram_size": 248832,
+    "maximum_size": 815104,
+    "speed": 115200,
+    "protocol": "nrfutil",
+    "protocols": ["jlink", "nrfjprog", "nrfutil", "stlink"],
+    "use_1200bps_touch": true,
+    "require_upload_port": true,
+    "wait_for_upload_port": true
+  },
+  "url": "https://www.elecrow.com/thinknode-m4-power-bank-lora-device-with-meshtastic-lora-tracker-function-powered-by-nrf52840.html",
+  "vendor": "ELECROW"
+}

src/gps/GPS.cpp

@@ -896,14 +896,11 @@ void GPS::writePinEN(bool on)
 void GPS::writePinStandby(bool standby)
 {
 #ifdef PIN_GPS_STANDBY // Specifically the standby pin for L76B, L76K and clones
-
-// Determine the new value for the pin
-// Normally: active HIGH for awake
-#ifdef PIN_GPS_STANDBY_INVERTED
-    bool val = standby;
-#else
-    bool val = !standby;
-#endif
+    bool val;
+    if (standby)
+        val = GPS_STANDBY_ACTIVE;
+    else
+        val = !GPS_STANDBY_ACTIVE;
 
     // Write and log
     pinMode(PIN_GPS_STANDBY, OUTPUT);

src/gps/GPS.h

@@ -16,6 +16,11 @@
 #define GPS_EN_ACTIVE 1
 #endif
 
+// Allow defining the polarity of the STANDBY output.  default is LOW for standby
+#ifndef GPS_STANDBY_ACTIVE
+#define GPS_STANDBY_ACTIVE LOW
+#endif
+
 static constexpr uint32_t GPS_UPDATE_ALWAYS_ON_THRESHOLD_MS = 10 * 1000UL;
 static constexpr uint32_t GPS_FIX_HOLD_MAX_MS = 20000;
 

src/modules/SerialModule.cpp

@@ -64,8 +64,9 @@ SerialModule *serialModule;
 SerialModuleRadio *serialModuleRadio;
 
 #if defined(TTGO_T_ECHO) || defined(CANARYONE) || defined(MESHLINK) || defined(ELECROW_ThinkNode_M1) ||                          \
-    defined(ELECROW_ThinkNode_M5) || defined(HELTEC_MESH_SOLAR) || defined(T_ECHO_LITE) || defined(ELECROW_ThinkNode_M3) ||      \
-    defined(MUZI_BASE)
+    defined(ELECROW_ThinkNode_M4) || defined(ELECROW_ThinkNode_M5) || defined(HELTEC_MESH_SOLAR) || defined(T_ECHO_LITE) ||      \
+    defined(ELECROW_ThinkNode_M3) || defined(MUZI_BASE)
+
 SerialModule::SerialModule() : StreamAPI(&Serial), concurrency::OSThread("Serial")
 {
     api_type = TYPE_SERIAL;
@@ -205,7 +206,9 @@ int32_t SerialModule::runOnce()
                 Serial.setTimeout(moduleConfig.serial.timeout > 0 ? moduleConfig.serial.timeout : TIMEOUT);
             }
 #elif !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(MESHLINK) &&                             \
-    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M5) && !defined(MUZI_BASE)
+    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M4) &&                        \
+    !defined(ELECROW_ThinkNode_M5) && !defined(MUZI_BASE)
+
             if (moduleConfig.serial.rxd && moduleConfig.serial.txd) {
 #ifdef ARCH_RP2040
                 Serial2.setFIFOSize(RX_BUFFER);
@@ -262,7 +265,8 @@ int32_t SerialModule::runOnce()
             }
 
 #if !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(MESHLINK) &&                               \
-    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M5) && !defined(MUZI_BASE)
+    !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M4) &&                        \
+    !defined(ELECROW_ThinkNode_M5) && !defined(MUZI_BASE)
             else if ((moduleConfig.serial.mode == meshtastic_ModuleConfig_SerialConfig_Serial_Mode_WS85)) {
                 processWXSerial();
 
@@ -537,8 +541,9 @@ ParsedLine parseLine(const char *line)
 void SerialModule::processWXSerial()
 {
 #if !defined(TTGO_T_ECHO) && !defined(T_ECHO_LITE) && !defined(CANARYONE) && !defined(CONFIG_IDF_TARGET_ESP32C6) &&              \
-    !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M5) &&  \
-    !defined(ARCH_STM32WL) && !defined(MUZI_BASE)
+    !defined(MESHLINK) && !defined(ELECROW_ThinkNode_M1) && !defined(ELECROW_ThinkNode_M3) && !defined(ELECROW_ThinkNode_M4) &&  \
+    !defined(ELECROW_ThinkNode_M5) && !defined(ARCH_STM32WL) && !defined(MUZI_BASE)
+
     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

@@ -72,6 +72,8 @@
 #define HW_VENDOR meshtastic_HardwareModel_THINKNODE_M3
 #elif defined(ELECROW_ThinkNode_M6)
 #define HW_VENDOR meshtastic_HardwareModel_THINKNODE_M6
+#elif defined(ELECROW_ThinkNode_M4)
+#define HW_VENDOR meshtastic_HardwareModel_THINKNODE_M4
 #elif defined(NANO_G2_ULTRA)
 #define HW_VENDOR meshtastic_HardwareModel_NANO_G2_ULTRA
 #elif defined(CANARYONE)

variants/nrf52840/ELECROW-ThinkNode-M4/platformio.ini

@@ -0,0 +1,15 @@
+; ThinkNode M4 - Powerbank nrf52840/LR1110 by Elecrow
+[env:thinknode_m4]
+extends = nrf52840_base
+board = ThinkNode-M4
+board_check = true
+debug_tool = jlink
+
+build_flags = ${nrf52840_base.build_flags}
+  -Ivariants/nrf52840/ELECROW-ThinkNode-M4
+  -DELECROW_ThinkNode_M4
+
+build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nrf52840/ELECROW-ThinkNode-M4>
+lib_deps =
+  ${nrf52840_base.lib_deps}
+  lewisxhe/PCF8563_Library@^1.0.1

variants/nrf52840/ELECROW-ThinkNode-M4/rfswitch.h

@@ -0,0 +1,11 @@
+#include "RadioLib.h"
+
+static const uint32_t rfswitch_dio_pins[] = {RADIOLIB_LR11X0_DIO5, RADIOLIB_LR11X0_DIO6, RADIOLIB_NC, RADIOLIB_NC, RADIOLIB_NC};
+
+static const Module::RfSwitchMode_t rfswitch_table[] = {
+    // mode                  DIO5  DIO6
+    {LR11x0::MODE_STBY, {LOW, LOW}},  {LR11x0::MODE_RX, {HIGH, LOW}},
+    {LR11x0::MODE_TX, {HIGH, HIGH}},  {LR11x0::MODE_TX_HP, {LOW, HIGH}},
+    {LR11x0::MODE_TX_HF, {LOW, LOW}}, {LR11x0::MODE_GNSS, {LOW, LOW}},
+    {LR11x0::MODE_WIFI, {LOW, LOW}},  END_OF_MODE_TABLE,
+};

variants/nrf52840/ELECROW-ThinkNode-M4/variant.cpp

@@ -0,0 +1,40 @@
+/*
+  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 - pins 0 and 1 are hardwired for xtal and should never be enabled
+    0xff, 0xff, 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()
+{
+    pinMode(LED_CHARGE, OUTPUT);
+    ledOff(LED_CHARGE);
+
+    pinMode(LED_PAIRING, OUTPUT);
+    ledOff(LED_PAIRING);
+}

variants/nrf52840/ELECROW-ThinkNode-M4/variant.h

@@ -0,0 +1,136 @@
+/*
+ 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
+*/
+
+#ifndef _VARIANT_ELECROW_THINKNODE_M4_
+#define _VARIANT_ELECROW_THINKNODE_M4_
+
+/** Master clock frequency */
+#define VARIANT_MCK (64000000ul)
+
+#define USE_LFXO
+
+/*----------------------------------------------------------------------------
+ *        Headers
+ *----------------------------------------------------------------------------*/
+
+#include "WVariant.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+#define PINS_COUNT (48)
+#define NUM_DIGITAL_PINS (48)
+#define NUM_ANALOG_INPUTS (1)
+#define NUM_ANALOG_OUTPUTS (0)
+
+// LEDs
+#define LED_BUILTIN -1
+#define LED_BLUE -1
+#define LED_CHARGE (32 + 9)
+#define LED_PAIRING (13)
+
+#define LED_STATE_ON 1
+
+// USB / power detection
+#define EXT_PWR_DETECT (32 + 3) // P1.03 USB present sense
+
+// Button
+#define PIN_BUTTON1 (4)
+
+// Battery ADC
+#define PIN_A0 (2)
+#define BATTERY_PIN PIN_A0
+#define BATTERY_SENSE_SAMPLES 30
+#define ADC_RESOLUTION 14
+#define BATTERY_SENSE_RESOLUTION_BITS 12
+#define BATTERY_SENSE_RESOLUTION 4096.0
+#define ADC_MULTIPLIER (2.00F)
+#undef AREF_VOLTAGE
+#define AREF_VOLTAGE 3.0
+#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
+
+static const uint8_t A0 = PIN_A0;
+
+#define PIN_NFC1 (9)
+#define PIN_NFC2 (10)
+
+// I2C
+#define WIRE_INTERFACES_COUNT 1
+#define PIN_WIRE_SDA (23)
+#define PIN_WIRE_SCL (25)
+
+// actually the LORA Radio
+#define PIN_POWER_EN (11)
+
+// charger status
+#define EXT_CHRG_DETECT (32 + 6)
+#define EXT_CHRG_DETECT_VALUE LOW
+
+// SPI
+#define SPI_INTERFACES_COUNT 1
+#define PIN_SPI_MISO (8)
+#define PIN_SPI_MOSI (7)
+#define PIN_SPI_SCK (6)
+
+#define LORA_RESET (32 + 8)
+#define LORA_DIO1 (12)
+#define LORA_DIO2 (26)
+#define LORA_SCK PIN_SPI_SCK
+#define LORA_MISO PIN_SPI_MISO
+#define LORA_MOSI PIN_SPI_MOSI
+#define LORA_CS (27)
+
+#define USE_LR1110
+#define LR1110_IRQ_PIN LORA_DIO1
+#define LR1110_NRESET_PIN LORA_RESET
+#define LR1110_BUSY_PIN LORA_DIO2
+#define LR1110_SPI_NSS_PIN LORA_CS
+#define LR1110_SPI_SCK_PIN LORA_SCK
+#define LR1110_SPI_MOSI_PIN LORA_MOSI
+#define LR1110_SPI_MISO_PIN LORA_MISO
+
+#define LR11X0_DIO3_TCXO_VOLTAGE 1.6
+#define LR11X0_DIO_AS_RF_SWITCH
+
+// Peripherals on I2C bus. Active Low
+#define VEXT_ENABLE (32)
+#define VEXT_ON_VALUE LOW
+
+// GPS L76K
+#define HAS_GPS 1
+#define GPS_L76K
+#define GPS_BAUDRATE 9600
+#define PIN_GPS_EN (32 + 11)
+#define GPS_EN_ACTIVE LOW
+#define PIN_GPS_RESET (3)
+#define GPS_RESET_MODE HIGH
+#define PIN_GPS_STANDBY (28)
+#define GPS_STANDBY_ACTIVE HIGH
+#define GPS_TX_PIN (32 + 12)
+#define GPS_RX_PIN (32 + 14)
+#define GPS_THREAD_INTERVAL 50
+
+#define PIN_SERIAL1_RX GPS_RX_PIN
+#define PIN_SERIAL1_TX GPS_TX_PIN
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif