diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 4fc84fa78..783791f0b 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -6,4 +6,4 @@
         "platformio.platformio-ide",
         "trunk.io"
     ],
-}
+}
\ No newline at end of file
diff --git a/arch/nrf52/nrf52.ini b/arch/nrf52/nrf52.ini
index 7f61a04c8..d1826a96a 100644
--- a/arch/nrf52/nrf52.ini
+++ b/arch/nrf52/nrf52.ini
@@ -1,6 +1,6 @@
 [nrf52_base]
 ; Instead of the standard nordicnrf52 platform, we use our fork which has our added variant files
-platform = platformio/nordicnrf52@^10.0.0
+platform = platformio/nordicnrf52@^10.1.0
 extends = arduino_base
 
 build_type = debug ; I'm debugging with ICE a lot now
diff --git a/platformio.ini b/platformio.ini
index 08b00fee3..0a5029f9d 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -88,7 +88,7 @@ check_flags =
 framework = arduino
 lib_deps =
   ${env.lib_deps}
-  mprograms/QMC5883LCompass@^1.1.1
+  mprograms/QMC5883LCompass@^1.2.0
   end2endzone/NonBlockingRTTTL@^1.3.0
   https://github.com/meshtastic/SparkFun_ATECCX08a_Arduino_Library.git#5cf62b36c6f30bc72a07bdb2c11fc9a22d1e31da
 
@@ -107,8 +107,8 @@ lib_deps =
 [environmental_base]
 lib_deps =
   adafruit/Adafruit BusIO@^1.11.4
-  adafruit/Adafruit Unified Sensor@^1.1.9
-  adafruit/Adafruit BMP280 Library@^2.6.6
+  adafruit/Adafruit Unified Sensor@^1.1.11
+  adafruit/Adafruit BMP280 Library@^2.6.8
   adafruit/Adafruit BME280 Library@^2.2.2
   https://github.com/boschsensortec/Bosch-BSEC2-Library#v1.5.2400
   boschsensortec/BME68x Sensor Library@^1.1.40407
@@ -117,7 +117,7 @@ lib_deps =
   adafruit/Adafruit INA219@^1.2.0
   adafruit/Adafruit SHTC3 Library@^1.0.0
   adafruit/Adafruit LPS2X@^2.0.4
-  adafruit/Adafruit SHT31 Library@^2.2.0
+  adafruit/Adafruit SHT31 Library@^2.2.2
   adafruit/Adafruit PM25 AQI Sensor@^1.0.6
   adafruit/Adafruit MPU6050@^2.2.4
   adafruit/Adafruit LIS3DH@^1.2.4
diff --git a/src/FSCommon.cpp b/src/FSCommon.cpp
index a458a9fcf..e7760c575 100644
--- a/src/FSCommon.cpp
+++ b/src/FSCommon.cpp
@@ -1,3 +1,13 @@
+/**
+ * @file FSCommon.cpp
+ * @brief This file contains functions for common filesystem operations such as copying, renaming, listing and deleting files and
+ * directories.
+ *
+ * The functions in this file are used to perform common filesystem operations such as copying, renaming, listing and deleting
+ * files and directories. These functions are used in the Meshtastic-device project to manage files and directories on the
+ * device's filesystem.
+ *
+ */
 #include "FSCommon.h"
 #include "configuration.h"
 
@@ -14,6 +24,13 @@ SPIClass SPI1(HSPI);
 
 #endif // HAS_SDCARD
 
+/**
+ * @brief Copies a file from one location to another.
+ *
+ * @param from The path of the source file.
+ * @param to The path of the destination file.
+ * @return true if the file was successfully copied, false otherwise.
+ */
 bool copyFile(const char *from, const char *to)
 {
 #ifdef FSCom
@@ -43,6 +60,14 @@ bool copyFile(const char *from, const char *to)
 #endif
 }
 
+/**
+ * Renames a file from pathFrom to pathTo.
+ *
+ * @param pathFrom The original path of the file.
+ * @param pathTo The new path of the file.
+ *
+ * @return True if the file was successfully renamed, false otherwise.
+ */
 bool renameFile(const char *pathFrom, const char *pathTo)
 {
 #ifdef FSCom
@@ -59,6 +84,13 @@ bool renameFile(const char *pathFrom, const char *pathTo)
 #endif
 }
 
+/**
+ * Lists the contents of a directory.
+ *
+ * @param dirname The name of the directory to list.
+ * @param levels The number of levels of subdirectories to list.
+ * @param del Whether or not to delete the contents of the directory after listing.
+ */
 void listDir(const char *dirname, uint8_t levels, bool del = false)
 {
 #ifdef FSCom
@@ -154,6 +186,13 @@ void listDir(const char *dirname, uint8_t levels, bool del = false)
 #endif
 }
 
+/**
+ * @brief Removes a directory and all its contents.
+ *
+ * This function recursively removes a directory and all its contents, including subdirectories and files.
+ *
+ * @param dirname The name of the directory to remove.
+ */
 void rmDir(const char *dirname)
 {
 #ifdef FSCom
@@ -182,6 +221,9 @@ void fsInit()
 #endif
 }
 
+/**
+ * Initializes the SD card and mounts the file system.
+ */
 void setupSDCard()
 {
 #ifdef HAS_SDCARD
@@ -212,4 +254,4 @@ void setupSDCard()
     LOG_DEBUG("Total space: %llu MB\n", SD.totalBytes() / (1024 * 1024));
     LOG_DEBUG("Used space: %llu MB\n", SD.usedBytes() / (1024 * 1024));
 #endif
-}
+}
\ No newline at end of file
diff --git a/src/OSTimer.cpp b/src/OSTimer.cpp
index 21744615f..f6739d75e 100644
--- a/src/OSTimer.cpp
+++ b/src/OSTimer.cpp
@@ -29,6 +29,16 @@ static void IRAM_ATTR onTimer()
     (*tCallback)(tParam1, tParam2);
 }
 
+/**
+ * Schedules a hardware callback function to be executed after a specified delay.
+ *
+ * @param callback The function to be executed.
+ * @param param1 The first parameter to be passed to the function.
+ * @param param2 The second parameter to be passed to the function.
+ * @param delayMsec The delay time in milliseconds before the function is executed.
+ *
+ * @return True if the function was successfully scheduled, false otherwise.
+ */
 bool scheduleHWCallback(PendableFunction callback, void *param1, uint32_t param2, uint32_t delayMsec)
 {
     if (!timer) {
diff --git a/src/Power.cpp b/src/Power.cpp
index a66ed4ec7..aad5b26ae 100644
--- a/src/Power.cpp
+++ b/src/Power.cpp
@@ -1,3 +1,15 @@
+/**
+ * @file Power.cpp
+ * @brief This file contains the implementation of the Power class, which is responsible for managing power-related functionality
+ * of the device. It includes battery level sensing, power management unit (PMU) control, and power state machine management. The
+ * Power class is used by the main device class to manage power-related functionality.
+ *
+ * The file also includes implementations of various battery level sensors, such as the AnalogBatteryLevel class, which assumes
+ * the battery voltage is attached via a voltage-divider to an analog input.
+ *
+ * This file is part of the Meshtastic project.
+ * For more information, see: https://meshtastic.org/
+ */
 #include "power.h"
 #include "NodeDB.h"
 #include "PowerFSM.h"
@@ -366,6 +378,11 @@ bool Power::analogInit()
 #endif
 }
 
+/**
+ * Initializes the Power class.
+ *
+ * @return true if the setup was successful, false otherwise.
+ */
 bool Power::setup()
 {
     bool found = axpChipInit();
diff --git a/src/PowerFSM.cpp b/src/PowerFSM.cpp
index 2d42ef655..6c6069365 100644
--- a/src/PowerFSM.cpp
+++ b/src/PowerFSM.cpp
@@ -1,3 +1,12 @@
+/**
+ * @file PowerFSM.cpp
+ * @brief Implements the finite state machine for power management.
+ *
+ * This file contains the implementation of the finite state machine (FSM) for power management.
+ * The FSM controls the power states of the device, including SDS (shallow deep sleep), LS (light sleep),
+ * NB (normal mode), and POWER (powered mode). The FSM also handles transitions between states and
+ * actions to be taken upon entering or exiting each state.
+ */
 #include "PowerFSM.h"
 #include "GPS.h"
 #include "MeshService.h"
@@ -137,7 +146,10 @@ static void nbEnter()
 {
     LOG_DEBUG("Enter state: NB\n");
     screen->setOn(false);
+#ifdef ARCH_ESP32
+    // Only ESP32 should turn off bluetooth
     setBluetoothEnable(false);
+#endif
 
     // FIXME - check if we already have packets for phone and immediately trigger EVENT_PACKETS_FOR_PHONE
 }
@@ -158,6 +170,8 @@ static void serialEnter()
 
 static void serialExit()
 {
+    // Turn bluetooth back on when we leave serial stream API
+    setBluetoothEnable(true);
     screen->print("Serial disconnected\n");
 }
 
@@ -242,7 +256,11 @@ void PowerFSM_setup()
 
     // wake timer expired or a packet arrived
     // if we are a router node, we go to NB (no need for bluetooth) otherwise we go to DARK (so we can send message to phone)
+#ifdef ARCH_ESP32
     powerFSM.add_transition(&stateLS, isRouter ? &stateNB : &stateDARK, EVENT_WAKE_TIMER, NULL, "Wake timer");
+#else // Don't go into a no-bluetooth state on low power platforms
+    powerFSM.add_transition(&stateLS, &stateDARK, EVENT_WAKE_TIMER, NULL, "Wake timer");
+#endif
 
     // We need this transition, because we might not transition if we were waiting to enter light-sleep, because when we wake from
     // light sleep we _always_ transition to NB or dark and
diff --git a/src/gps/GPS.cpp b/src/gps/GPS.cpp
index 737ad71d2..62536505d 100644
--- a/src/gps/GPS.cpp
+++ b/src/gps/GPS.cpp
@@ -213,8 +213,8 @@ bool GPS::setupGPS()
             // _serial_gps->begin(9600);    //The baud rate of 9600 has been initialized at the beginning of setupGPS, this line
             // is the redundant part delay(250);
 
-            // Initialize the L76K Chip, use GPS + GLONASS
-            _serial_gps->write("$PCAS04,5*1C\r\n");
+            // Initialize the L76K Chip, use GPS + GLONASS + BEIDOU
+            _serial_gps->write("$PCAS04,7*1E\r\n");
             delay(250);
             // only ask for RMC and GGA
             _serial_gps->write("$PCAS03,1,0,0,0,1,0,0,0,0,0,,,0,0*02\r\n");
diff --git a/src/gps/RTC.cpp b/src/gps/RTC.cpp
index b80fd04aa..2bfb66e12 100644
--- a/src/gps/RTC.cpp
+++ b/src/gps/RTC.cpp
@@ -17,6 +17,10 @@ static uint32_t
     timeStartMsec; // Once we have a GPS lock, this is where we hold the initial msec clock that corresponds to that time
 static uint64_t zeroOffsetSecs; // GPS based time in secs since 1970 - only updated once on initial lock
 
+/**
+ * Reads the current date and time from the RTC module and updates the system time.
+ * @return True if the RTC was successfully read and the system time was updated, false otherwise.
+ */
 void readFromRTC()
 {
     struct timeval tv; /* btw settimeofday() is helpful here too*/
@@ -83,7 +87,15 @@ void readFromRTC()
 #endif
 }
 
-/// If we haven't yet set our RTC this boot, set it from a GPS derived time
+/**
+ * Sets the RTC (Real-Time Clock) if the provided time is of higher quality than the current RTC time.
+ *
+ * @param q The quality of the provided time.
+ * @param tv A pointer to a timeval struct containing the time to potentially set the RTC to.
+ * @return True if the RTC was set, false otherwise.
+ *
+ * If we haven't yet set our RTC this boot, set it from a GPS derived time
+ */
 bool perhapsSetRTC(RTCQuality q, const struct timeval *tv)
 {
     static uint32_t lastSetMsec = 0;
@@ -151,6 +163,13 @@ bool perhapsSetRTC(RTCQuality q, const struct timeval *tv)
     }
 }
 
+/**
+ * Sets the RTC time if the provided time is of higher quality than the current RTC time.
+ *
+ * @param q The quality of the provided time.
+ * @param t The time to potentially set the RTC to.
+ * @return True if the RTC was set to the provided time, false otherwise.
+ */
 bool perhapsSetRTC(RTCQuality q, struct tm &t)
 {
     /* Convert to unix time
@@ -171,11 +190,22 @@ bool perhapsSetRTC(RTCQuality q, struct tm &t)
     }
 }
 
+/**
+ * Returns the current time in seconds since the Unix epoch (January 1, 1970).
+ *
+ * @return The current time in seconds since the Unix epoch.
+ */
 uint32_t getTime()
 {
     return (((uint32_t)millis() - timeStartMsec) / 1000) + zeroOffsetSecs;
 }
 
+/**
+ * Returns the current time from the RTC if the quality of the time is at least minQuality.
+ *
+ * @param minQuality The minimum quality of the RTC time required for it to be considered valid.
+ * @return The current time from the RTC if it meets the minimum quality requirement, or 0 if the time is not valid.
+ */
 uint32_t getValidTime(RTCQuality minQuality)
 {
     return (currentQuality >= minQuality) ? getTime() : 0;
diff --git a/src/graphics/EInkDisplay2.h b/src/graphics/EInkDisplay2.h
index c7ae6754b..2529b1f0e 100644
--- a/src/graphics/EInkDisplay2.h
+++ b/src/graphics/EInkDisplay2.h
@@ -3,7 +3,7 @@
 #include <OLEDDisplay.h>
 
 /**
- * An adapter class that allows using the TFT_eSPI library as if it was an OLEDDisplay implementation.
+ * An adapter class that allows using the GxEPD2 library as if it was an OLEDDisplay implementation.
  *
  * Remaining TODO:
  * optimize display() to only draw changed pixels (see other OLED subclasses for examples)
diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index fbd99d252..ce6b7d5dd 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -103,7 +103,8 @@ static uint16_t displayWidth, displayHeight;
 #define SCREEN_WIDTH displayWidth
 #define SCREEN_HEIGHT displayHeight
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16  // Height: 19
 #define FONT_MEDIUM ArialMT_Plain_24 // Height: 28
@@ -493,7 +494,8 @@ static void drawNodes(OLEDDisplay *display, int16_t x, int16_t y, NodeStatus *no
 {
     char usersString[20];
     snprintf(usersString, sizeof(usersString), "%d/%d", nodeStatus->getNumOnline(), nodeStatus->getNumTotal());
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
     display->drawFastImage(x, y + 3, 8, 8, imgUser);
 #else
     display->drawFastImage(x, y, 8, 8, imgUser);
@@ -1527,7 +1529,8 @@ void DebugInfo::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
 #ifdef ARCH_ESP32
         if (millis() - storeForwardModule->lastHeartbeat >
             (storeForwardModule->heartbeatInterval * 1200)) { // no heartbeat, overlap a bit
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
             display->drawFastImage(x + SCREEN_WIDTH - 14 - display->getStringWidth(ourId), y + 3 + FONT_HEIGHT_SMALL, 12, 8,
                                    imgQuestionL1);
             display->drawFastImage(x + SCREEN_WIDTH - 14 - display->getStringWidth(ourId), y + 11 + FONT_HEIGHT_SMALL, 12, 8,
@@ -1537,7 +1540,8 @@ void DebugInfo::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
                                    imgQuestion);
 #endif
         } else {
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
             display->drawFastImage(x + SCREEN_WIDTH - 18 - display->getStringWidth(ourId), y + 3 + FONT_HEIGHT_SMALL, 16, 8,
                                    imgSFL1);
             display->drawFastImage(x + SCREEN_WIDTH - 18 - display->getStringWidth(ourId), y + 11 + FONT_HEIGHT_SMALL, 16, 8,
@@ -1549,7 +1553,8 @@ void DebugInfo::drawFrame(OLEDDisplay *display, OLEDDisplayUiState *state, int16
         }
 #endif
     } else {
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
         display->drawFastImage(x + SCREEN_WIDTH - 14 - display->getStringWidth(ourId), y + 3 + FONT_HEIGHT_SMALL, 12, 8,
                                imgInfoL1);
         display->drawFastImage(x + SCREEN_WIDTH - 14 - display->getStringWidth(ourId), y + 11 + FONT_HEIGHT_SMALL, 12, 8,
diff --git a/src/graphics/TFTDisplay.cpp b/src/graphics/TFTDisplay.cpp
index 4c9196b2f..186887457 100644
--- a/src/graphics/TFTDisplay.cpp
+++ b/src/graphics/TFTDisplay.cpp
@@ -217,7 +217,96 @@ class LGFX : public lgfx::LGFX_Device
 
 static LGFX tft;
 
-#elif defined(ST7735_CS) || defined(ILI9341_DRIVER)
+#elif defined(ILI9341_DRIVER)
+
+#include <LovyanGFX.hpp> // Graphics and font library for ILI9341 driver chip
+
+#if defined(ILI9341_BACKLIGHT_EN) && !defined(TFT_BL)
+#define TFT_BL ILI9341_BACKLIGHT_EN
+#endif
+
+class LGFX : public lgfx::LGFX_Device
+{
+    lgfx::Panel_ILI9341 _panel_instance;
+    lgfx::Bus_SPI _bus_instance;
+    lgfx::Light_PWM _light_instance;
+
+  public:
+    LGFX(void)
+    {
+        {
+            auto cfg = _bus_instance.config();
+
+            // configure SPI
+            cfg.spi_host = ILI9341_SPI_HOST; // ESP32-S2,S3,C3 : SPI2_HOST or SPI3_HOST / ESP32 : VSPI_HOST or HSPI_HOST
+            cfg.spi_mode = 0;
+            cfg.freq_write = SPI_FREQUENCY; // SPI clock for transmission (up to 80MHz, rounded to the value obtained by dividing
+                                            // 80MHz by an integer)
+            cfg.freq_read = SPI_READ_FREQUENCY; // SPI clock when receiving
+            cfg.spi_3wire = false;              // Set to true if reception is done on the MOSI pin
+            cfg.use_lock = true;                // Set to true to use transaction locking
+            cfg.dma_channel = SPI_DMA_CH_AUTO;  // SPI_DMA_CH_AUTO; // Set DMA channel to use (0=not use DMA / 1=1ch / 2=ch /
+                                                // SPI_DMA_CH_AUTO=auto setting)
+            cfg.pin_sclk = TFT_SCLK;            // Set SPI SCLK pin number
+            cfg.pin_mosi = TFT_MOSI;            // Set SPI MOSI pin number
+            cfg.pin_miso = TFT_MISO;            // Set SPI MISO pin number (-1 = disable)
+            cfg.pin_dc = TFT_DC;                // Set SPI DC pin number (-1 = disable)
+
+            _bus_instance.config(cfg);              // applies the set value to the bus.
+            _panel_instance.setBus(&_bus_instance); // set the bus on the panel.
+        }
+
+        {                                        // Set the display panel control.
+            auto cfg = _panel_instance.config(); // Gets a structure for display panel settings.
+
+            cfg.pin_cs = TFT_CS;     // Pin number where CS is connected (-1 = disable)
+            cfg.pin_rst = TFT_RST;   // Pin number where RST is connected  (-1 = disable)
+            cfg.pin_busy = TFT_BUSY; // Pin number where BUSY is connected (-1 = disable)
+
+            // The following setting values ​​are general initial values ​​for each panel, so please comment out any
+            // unknown items and try them.
+
+            cfg.panel_width = TFT_WIDTH;   // actual displayable width
+            cfg.panel_height = TFT_HEIGHT; // actual displayable height
+            cfg.offset_x = TFT_OFFSET_X;   // Panel offset amount in X direction
+            cfg.offset_y = TFT_OFFSET_Y;   // Panel offset amount in Y direction
+            cfg.offset_rotation = 0;       // Rotation direction value offset 0~7 (4~7 is upside down)
+            cfg.dummy_read_pixel = 8;      // Number of bits for dummy read before pixel readout
+            cfg.dummy_read_bits = 1;       // Number of bits for dummy read before non-pixel data read
+            cfg.readable = true;           // Set to true if data can be read
+            cfg.invert = false;            // Set to true if the light/darkness of the panel is reversed
+            cfg.rgb_order = false;         // Set to true if the panel's red and blue are swapped
+            cfg.dlen_16bit =
+                false;             // Set to true for panels that transmit data length in 16-bit units with 16-bit parallel or SPI
+            cfg.bus_shared = true; // If the bus is shared with the SD card, set to true (bus control with drawJpgFile etc.)
+
+            // Set the following only when the display is shifted with a driver with a variable number of pixels, such as the
+            // ST7735 or ILI9163.
+            cfg.memory_width = TFT_WIDTH;   // Maximum width supported by the driver IC
+            cfg.memory_height = TFT_HEIGHT; // Maximum height supported by the driver IC
+            _panel_instance.config(cfg);
+        }
+
+        // Set the backlight control
+        {
+            auto cfg = _light_instance.config(); // Gets a structure for backlight settings.
+
+            cfg.pin_bl = TFT_BL; // Pin number to which the backlight is connected
+            cfg.invert = false;  // true to invert the brightness of the backlight
+            // cfg.freq = 44100;    // PWM frequency of backlight
+            // cfg.pwm_channel = 1; // PWM channel number to use
+
+            _light_instance.config(cfg);
+            _panel_instance.setLight(&_light_instance); // Set the backlight on the panel.
+        }
+
+        setPanel(&_panel_instance);
+    }
+};
+
+static LGFX tft;
+
+#elif defined(ST7735_CS)
 #include <TFT_eSPI.h> // Graphics and font library for ILI9341 driver chip
 
 static TFT_eSPI tft = TFT_eSPI(); // Invoke library, pins defined in User_Setup.h
@@ -335,9 +424,9 @@ bool TFTDisplay::connect()
 #endif
 
     tft.init();
-#if defined(M5STACK) || defined(T_DECK)
+#if defined(T_DECK)
     tft.setRotation(1); // M5Stack/T-Deck have the TFT in landscape
-#elif defined(T_WATCH_S3)
+#elif defined(M5STACK) || defined(T_WATCH_S3)
     tft.setRotation(0); // T-Watch S3 has the TFT in portrait
 #else
     tft.setRotation(3); // Orient horizontal and wide underneath the silkscreen name label
diff --git a/src/graphics/TFTDisplay.h b/src/graphics/TFTDisplay.h
index 325765b1f..dee31acf1 100644
--- a/src/graphics/TFTDisplay.h
+++ b/src/graphics/TFTDisplay.h
@@ -3,7 +3,7 @@
 #include <OLEDDisplay.h>
 
 /**
- * An adapter class that allows using the TFT_eSPI library as if it was an OLEDDisplay implementation.
+ * An adapter class that allows using the LovyanGFX library as if it was an OLEDDisplay implementation.
  *
  * Remaining TODO:
  * optimize display() to only draw changed pixels (see other OLED subclasses for examples)
diff --git a/src/graphics/images.h b/src/graphics/images.h
index 46c9118b1..a1191076b 100644
--- a/src/graphics/images.h
+++ b/src/graphics/images.h
@@ -14,7 +14,8 @@ const uint8_t imgUser[] PROGMEM = {0x3C, 0x42, 0x99, 0xA5, 0xA5, 0x99, 0x42, 0x3
 const uint8_t imgPositionEmpty[] PROGMEM = {0x20, 0x30, 0x28, 0x24, 0x42, 0xFF};
 const uint8_t imgPositionSolid[] PROGMEM = {0x20, 0x30, 0x38, 0x3C, 0x7E, 0xFF};
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
 const uint8_t imgQuestionL1[] PROGMEM = {0xff, 0x01, 0x01, 0x32, 0x7b, 0x49, 0x49, 0x6f, 0x26, 0x01, 0x01, 0xff};
 const uint8_t imgQuestionL2[] PROGMEM = {0x0f, 0x08, 0x08, 0x08, 0x06, 0x0f, 0x0f, 0x06, 0x08, 0x08, 0x08, 0x0f};
 const uint8_t imgInfoL1[] PROGMEM = {0xff, 0x01, 0x01, 0x01, 0x1e, 0x7f, 0x1e, 0x01, 0x01, 0x01, 0x01, 0xff};
diff --git a/src/memGet.cpp b/src/memGet.cpp
index 9f59d29ff..0575da279 100644
--- a/src/memGet.cpp
+++ b/src/memGet.cpp
@@ -1,8 +1,21 @@
+/**
+ * @file memGet.cpp
+ * @brief Implementation of MemGet class that provides functions to get memory information.
+ *
+ * This file contains the implementation of MemGet class that provides functions to get
+ * information about free heap, heap size, free psram and psram size. The functions are
+ * implemented for ESP32 and NRF52 architectures. If the platform does not have heap
+ * management function implemented, the functions return UINT32_MAX or 0.
+ */
 #include "memGet.h"
 #include "configuration.h"
 
 MemGet memGet;
 
+/**
+ * Returns the amount of free heap memory in bytes.
+ * @return uint32_t The amount of free heap memory in bytes.
+ */
 uint32_t MemGet::getFreeHeap()
 {
 #ifdef ARCH_ESP32
@@ -15,6 +28,10 @@ uint32_t MemGet::getFreeHeap()
 #endif
 }
 
+/**
+ * Returns the size of the heap memory in bytes.
+ * @return uint32_t The size of the heap memory in bytes.
+ */
 uint32_t MemGet::getHeapSize()
 {
 #ifdef ARCH_ESP32
@@ -27,6 +44,11 @@ uint32_t MemGet::getHeapSize()
 #endif
 }
 
+/**
+ * Returns the amount of free psram memory in bytes.
+ *
+ * @return The amount of free psram memory in bytes.
+ */
 uint32_t MemGet::getFreePsram()
 {
 #ifdef ARCH_ESP32
@@ -36,6 +58,11 @@ uint32_t MemGet::getFreePsram()
 #endif
 }
 
+/**
+ * @brief Returns the size of the PSRAM memory.
+ *
+ * @return uint32_t The size of the PSRAM memory.
+ */
 uint32_t MemGet::getPsramSize()
 {
 #ifdef ARCH_ESP32
@@ -43,4 +70,4 @@ uint32_t MemGet::getPsramSize()
 #else
     return 0;
 #endif
-}
+}
\ No newline at end of file
diff --git a/src/mesh/NodeDB.cpp b/src/mesh/NodeDB.cpp
index 956067865..e7526505a 100644
--- a/src/mesh/NodeDB.cpp
+++ b/src/mesh/NodeDB.cpp
@@ -106,7 +106,6 @@ bool NodeDB::resetRadioConfig(bool factory_reset)
         config.lora.region = meshtastic_Config_LoRaConfig_RegionCode_TW;
 
         // Enter super deep sleep soon and stay there not very long
-        // radioConfig.preferences.mesh_sds_timeout_secs = 10;
         // radioConfig.preferences.sds_secs = 60;
     }
 
@@ -208,7 +207,6 @@ void NodeDB::initConfigIntervals()
     config.position.position_broadcast_secs = default_broadcast_interval_secs;
 
     config.power.ls_secs = default_ls_secs;
-    config.power.mesh_sds_timeout_secs = default_mesh_sds_timeout_secs;
     config.power.min_wake_secs = default_min_wake_secs;
     config.power.sds_secs = default_sds_secs;
     config.power.wait_bluetooth_secs = default_wait_bluetooth_secs;
diff --git a/src/mesh/NodeDB.h b/src/mesh/NodeDB.h
index bb1610114..ab0ec8288 100644
--- a/src/mesh/NodeDB.h
+++ b/src/mesh/NodeDB.h
@@ -159,7 +159,6 @@ extern NodeDB nodeDB;
 
         # prefs.position_broadcast_secs = FIXME possibly broadcast only once an hr
         prefs.wait_bluetooth_secs = 1  # Don't stay in bluetooth mode
-        prefs.mesh_sds_timeout_secs = never
         # try to stay in light sleep one full day, then briefly wake and sleep again
 
         prefs.ls_secs = oneday
@@ -187,7 +186,6 @@ extern NodeDB nodeDB;
 #define default_gps_update_interval IF_ROUTER(ONE_DAY, 2 * 60)
 #define default_broadcast_interval_secs IF_ROUTER(ONE_DAY / 2, 15 * 60)
 #define default_wait_bluetooth_secs IF_ROUTER(1, 60)
-#define default_mesh_sds_timeout_secs IF_ROUTER(NODE_DELAY_FOREVER, 2 * 60 * 60)
 #define default_sds_secs IF_ROUTER(ONE_DAY, UINT32_MAX) // Default to forever super deep sleep
 #define default_ls_secs IF_ROUTER(ONE_DAY, 5 * 60)
 #define default_min_wake_secs 10
diff --git a/src/mesh/Router.cpp b/src/mesh/Router.cpp
index e605cfc94..03aa57351 100644
--- a/src/mesh/Router.cpp
+++ b/src/mesh/Router.cpp
@@ -153,7 +153,12 @@ void Router::setReceivedMessage()
 
 meshtastic_QueueStatus Router::getQueueStatus()
 {
-    return iface->getQueueStatus();
+    if (!iface) {
+        meshtastic_QueueStatus qs;
+        qs.res = qs.mesh_packet_id = qs.free = qs.maxlen = 0;
+        return qs;
+    } else
+        return iface->getQueueStatus();
 }
 
 ErrorCode Router::sendLocal(meshtastic_MeshPacket *p, RxSource src)
diff --git a/src/modules/CannedMessageModule.cpp b/src/modules/CannedMessageModule.cpp
index b788d6a06..3ca718e99 100644
--- a/src/modules/CannedMessageModule.cpp
+++ b/src/modules/CannedMessageModule.cpp
@@ -18,7 +18,9 @@
 #include "graphics/fonts/OLEDDisplayFontsUA.h"
 #endif
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
+
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16
 #define FONT_MEDIUM ArialMT_Plain_24
@@ -59,7 +61,8 @@ CannedMessageModule::CannedMessageModule()
 {
     if (moduleConfig.canned_message.enabled) {
         this->loadProtoForModule();
-        if ((this->splitConfiguredMessages() <= 0) && (cardkb_found.address != CARDKB_ADDR)) {
+        if ((this->splitConfiguredMessages() <= 0) && (cardkb_found.address != CARDKB_ADDR) &&
+            (cardkb_found.address != TDECK_KB_ADDR)) {
             LOG_INFO("CannedMessageModule: No messages are configured. Module is disabled\n");
             this->runState = CANNED_MESSAGE_RUN_STATE_DISABLED;
             disable();
diff --git a/src/modules/ExternalNotificationModule.cpp b/src/modules/ExternalNotificationModule.cpp
index 7dd6dd1ce..cbcf4e452 100644
--- a/src/modules/ExternalNotificationModule.cpp
+++ b/src/modules/ExternalNotificationModule.cpp
@@ -1,3 +1,18 @@
+/**
+ * @file ExternalNotificationModule.cpp
+ * @brief Implementation of the ExternalNotificationModule class.
+ *
+ * This file contains the implementation of the ExternalNotificationModule class, which is responsible for handling external
+ * notifications such as vibration, buzzer, and LED lights. The class provides methods to turn on and off the external
+ * notification outputs and to play ringtones using PWM buzzer. It also includes default configurations and a runOnce() method to
+ * handle the module's behavior.
+ *
+ * Documentation:
+ * https://meshtastic.org/docs/settings/moduleconfig/external-notification
+ *
+ * @author Jm Casler & Meshtastic Team
+ * @date [Insert Date]
+ */
 #include "ExternalNotificationModule.h"
 #include "MeshService.h"
 #include "NodeDB.h"
@@ -113,6 +128,11 @@ int32_t ExternalNotificationModule::runOnce()
     }
 }
 
+/**
+ * Sets the external notification on for the specified index.
+ *
+ * @param index The index of the external notification to turn on.
+ */
 void ExternalNotificationModule::setExternalOn(uint8_t index)
 {
     externalCurrentState[index] = 1;
diff --git a/src/modules/RangeTestModule.cpp b/src/modules/RangeTestModule.cpp
index 28835406d..ecf4b70c7 100644
--- a/src/modules/RangeTestModule.cpp
+++ b/src/modules/RangeTestModule.cpp
@@ -1,3 +1,13 @@
+/**
+ * @file RangeTestModule.cpp
+ * @brief Implementation of the RangeTestModule class and RangeTestModuleRadio class.
+ *
+ * As a sender, this module sends packets every n seconds with an incremented PacketID.
+ * As a receiver, this module receives packets from multiple senders and saves them to the Filesystem.
+ *
+ * The RangeTestModule class is an OSThread that runs the module.
+ * The RangeTestModuleRadio class handles sending and receiving packets.
+ */
 #include "RangeTestModule.h"
 #include "FSCommon.h"
 #include "MeshService.h"
@@ -10,11 +20,6 @@
 #include "gps/GeoCoord.h"
 #include <Arduino.h>
 
-/*
-    As a sender, I can send packets every n seconds. These packets include an incremented PacketID.
-    As a receiver, I can receive packets from multiple senders. These packets can be saved to the Filesystem.
-*/
-
 RangeTestModule *rangeTestModule;
 RangeTestModuleRadio *rangeTestModuleRadio;
 
@@ -97,6 +102,12 @@ int32_t RangeTestModule::runOnce()
     return disable();
 }
 
+/**
+ * Sends a payload to a specified destination node.
+ *
+ * @param dest The destination node number.
+ * @param wantReplies Whether or not to request replies from the destination node.
+ */
 void RangeTestModuleRadio::sendPayload(NodeNum dest, bool wantReplies)
 {
     meshtastic_MeshPacket *p = allocDataPacket();
diff --git a/src/modules/SerialModule.cpp b/src/modules/SerialModule.cpp
index 1caae69a3..4482aae90 100644
--- a/src/modules/SerialModule.cpp
+++ b/src/modules/SerialModule.cpp
@@ -86,7 +86,13 @@ SerialModuleRadio::SerialModuleRadio() : MeshModule("SerialModuleRadio")
     }
 }
 
-// For the serial2 port we can't really detect if any client is on the other side, so instead just look for recent messages
+/**
+ * @brief Checks if the serial connection is established.
+ *
+ * @return true if the serial connection is established, false otherwise.
+ *
+ * For the serial2 port we can't really detect if any client is on the other side, so instead just look for recent messages
+ */
 bool SerialModule::checkIsConnected()
 {
     uint32_t now = millis();
@@ -191,6 +197,11 @@ int32_t SerialModule::runOnce()
     }
 }
 
+/**
+ * Allocates a new mesh packet for use as a reply to a received packet.
+ *
+ * @return A pointer to the newly allocated mesh packet.
+ */
 meshtastic_MeshPacket *SerialModuleRadio::allocReply()
 {
     auto reply = allocDataPacket(); // Allocate a packet for sending
@@ -198,6 +209,12 @@ meshtastic_MeshPacket *SerialModuleRadio::allocReply()
     return reply;
 }
 
+/**
+ * Sends a payload to a specified destination node.
+ *
+ * @param dest The destination node number.
+ * @param wantReplies Whether or not to request replies from the destination node.
+ */
 void SerialModuleRadio::sendPayload(NodeNum dest, bool wantReplies)
 {
     meshtastic_Channel *ch = (boundChannel != NULL) ? &channels.getByName(boundChannel) : NULL;
@@ -216,6 +233,12 @@ void SerialModuleRadio::sendPayload(NodeNum dest, bool wantReplies)
     service.sendToMesh(p);
 }
 
+/**
+ * Handle a received mesh packet.
+ *
+ * @param mp The received mesh packet.
+ * @return The processed message.
+ */
 ProcessMessage SerialModuleRadio::handleReceived(const meshtastic_MeshPacket &mp)
 {
     if (moduleConfig.serial.enabled) {
@@ -277,6 +300,11 @@ ProcessMessage SerialModuleRadio::handleReceived(const meshtastic_MeshPacket &mp
     return ProcessMessage::CONTINUE; // Let others look at this message also if they want
 }
 
+/**
+ * @brief Returns the baud rate of the serial module from the module configuration.
+ *
+ * @return uint32_t The baud rate of the serial module.
+ */
 uint32_t SerialModule::getBaudRate()
 {
     if (moduleConfig.serial.baud == meshtastic_ModuleConfig_SerialConfig_Serial_Baud_BAUD_110) {
diff --git a/src/modules/Telemetry/EnvironmentTelemetry.cpp b/src/modules/Telemetry/EnvironmentTelemetry.cpp
index 8a4747114..1f1a0cbf9 100644
--- a/src/modules/Telemetry/EnvironmentTelemetry.cpp
+++ b/src/modules/Telemetry/EnvironmentTelemetry.cpp
@@ -31,7 +31,9 @@ SHT31Sensor sht31Sensor;
 #define FAILED_STATE_SENSOR_READ_MULTIPLIER 10
 #define DISPLAY_RECEIVEID_MEASUREMENTS_ON_SCREEN true
 
-#ifdef USE_EINK
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
+
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16
 #define FONT_MEDIUM ArialMT_Plain_24
diff --git a/src/modules/esp32/AudioModule.cpp b/src/modules/esp32/AudioModule.cpp
index 4a154878d..a2e43347a 100644
--- a/src/modules/esp32/AudioModule.cpp
+++ b/src/modules/esp32/AudioModule.cpp
@@ -48,7 +48,9 @@ AudioModule *audioModule;
 #define YIELD_FROM_ISR(x) portYIELD_FROM_ISR(x)
 #endif
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS)
+#if (defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS) || defined(ST7789_CS)) &&                                \
+    !defined(DISPLAY_FORCE_SMALL_FONTS)
+
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16
 #define FONT_MEDIUM ArialMT_Plain_24
diff --git a/src/modules/esp32/StoreForwardModule.cpp b/src/modules/esp32/StoreForwardModule.cpp
index fccbd7199..de4d4da3b 100644
--- a/src/modules/esp32/StoreForwardModule.cpp
+++ b/src/modules/esp32/StoreForwardModule.cpp
@@ -1,3 +1,17 @@
+/**
+ * @file StoreForwardModule.cpp
+ * @brief Implementation of the StoreForwardModule class.
+ *
+ * This file contains the implementation of the StoreForwardModule class, which is responsible for managing the store and forward
+ * functionality of the Meshtastic device. The class provides methods for sending and receiving messages, as well as managing the
+ * message history queue. It also initializes and manages the data structures used for storing the message history.
+ *
+ * The StoreForwardModule class is used by the MeshService class to provide store and forward functionality to the Meshtastic
+ * device.
+ *
+ * @author Jm Casler
+ * @date [Insert Date]
+ */
 #include "StoreForwardModule.h"
 #include "MeshService.h"
 #include "NodeDB.h"
@@ -52,9 +66,9 @@ int32_t StoreForwardModule::runOnce()
     return disable();
 }
 
-/*
-    Create our data structure in the PSRAM.
-*/
+/**
+ * Populates the PSRAM with data to be sent later when a device is out of range.
+ */
 void StoreForwardModule::populatePSRAM()
 {
     /*
@@ -82,6 +96,12 @@ void StoreForwardModule::populatePSRAM()
     LOG_DEBUG("*** numberOfPackets for packetHistory - %u\n", numberOfPackets);
 }
 
+/**
+ * Sends messages from the message history to the specified recipient.
+ *
+ * @param msAgo The number of milliseconds ago from which to start sending messages.
+ * @param to The recipient ID to send the messages to.
+ */
 void StoreForwardModule::historySend(uint32_t msAgo, uint32_t to)
 {
     uint32_t queueSize = storeForwardModule->historyQueueCreate(msAgo, to);
@@ -101,6 +121,13 @@ void StoreForwardModule::historySend(uint32_t msAgo, uint32_t to)
     storeForwardModule->sendMessage(to, sf);
 }
 
+/**
+ * Creates a new history queue with messages that were received within the specified time frame.
+ *
+ * @param msAgo The number of milliseconds ago to start the history queue.
+ * @param to The maximum number of messages to include in the history queue.
+ * @return The ID of the newly created history queue.
+ */
 uint32_t StoreForwardModule::historyQueueCreate(uint32_t msAgo, uint32_t to)
 {
 
@@ -141,6 +168,11 @@ uint32_t StoreForwardModule::historyQueueCreate(uint32_t msAgo, uint32_t to)
     return this->packetHistoryTXQueue_size;
 }
 
+/**
+ * Adds a mesh packet to the history buffer for store-and-forward functionality.
+ *
+ * @param mp The mesh packet to add to the history buffer.
+ */
 void StoreForwardModule::historyAdd(const meshtastic_MeshPacket &mp)
 {
     const auto &p = mp.decoded;
@@ -162,6 +194,12 @@ meshtastic_MeshPacket *StoreForwardModule::allocReply()
     return reply;
 }
 
+/**
+ * Sends a payload to a specified destination node using the store and forward mechanism.
+ *
+ * @param dest The destination node number.
+ * @param packetHistory_index The index of the packet in the packet history buffer.
+ */
 void StoreForwardModule::sendPayload(NodeNum dest, uint32_t packetHistory_index)
 {
     LOG_INFO("*** Sending S&F Payload\n");
@@ -183,6 +221,12 @@ void StoreForwardModule::sendPayload(NodeNum dest, uint32_t packetHistory_index)
     service.sendToMesh(p);
 }
 
+/**
+ * Sends a message to a specified destination node using the store and forward protocol.
+ *
+ * @param dest The destination node number.
+ * @param payload The message payload to be sent.
+ */
 void StoreForwardModule::sendMessage(NodeNum dest, meshtastic_StoreAndForward &payload)
 {
     meshtastic_MeshPacket *p = allocDataProtobuf(payload);
@@ -203,6 +247,12 @@ void StoreForwardModule::sendMessage(NodeNum dest, meshtastic_StoreAndForward &p
     service.sendToMesh(p);
 }
 
+/**
+ * Sends a store-and-forward message to the specified destination node.
+ *
+ * @param dest The destination node number.
+ * @param rr The store-and-forward request/response message to send.
+ */
 void StoreForwardModule::sendMessage(NodeNum dest, meshtastic_StoreAndForward_RequestResponse rr)
 {
     // Craft an empty response, save some bytes in flash
@@ -211,6 +261,11 @@ void StoreForwardModule::sendMessage(NodeNum dest, meshtastic_StoreAndForward_Re
     storeForwardModule->sendMessage(dest, sf);
 }
 
+/**
+ * Sends statistics about the store and forward module to the specified node.
+ *
+ * @param to The node ID to send the statistics to.
+ */
 void StoreForwardModule::statsSend(uint32_t to)
 {
     meshtastic_StoreAndForward sf = meshtastic_StoreAndForward_init_zero;
@@ -231,6 +286,12 @@ void StoreForwardModule::statsSend(uint32_t to)
     storeForwardModule->sendMessage(to, sf);
 }
 
+/**
+ * Handles a received mesh packet, potentially storing it for later forwarding.
+ *
+ * @param mp The received mesh packet.
+ * @return A `ProcessMessage` indicating whether the packet was successfully handled.
+ */
 ProcessMessage StoreForwardModule::handleReceived(const meshtastic_MeshPacket &mp)
 {
 #ifdef ARCH_ESP32
@@ -287,6 +348,13 @@ ProcessMessage StoreForwardModule::handleReceived(const meshtastic_MeshPacket &m
     return ProcessMessage::CONTINUE; // Let others look at this message also if they want
 }
 
+/**
+ * Handles a received protobuf message for the Store and Forward module.
+ *
+ * @param mp The received MeshPacket to handle.
+ * @param p A pointer to the StoreAndForward object.
+ * @return True if the message was successfully handled, false otherwise.
+ */
 bool StoreForwardModule::handleReceivedProtobuf(const meshtastic_MeshPacket &mp, meshtastic_StoreAndForward *p)
 {
     if (!moduleConfig.store_forward.enabled) {
@@ -488,4 +556,4 @@ StoreForwardModule::StoreForwardModule()
         disable();
     }
 #endif
-}
+}
\ No newline at end of file
diff --git a/src/xmodem.cpp b/src/xmodem.cpp
index e8727c468..852ff3453 100644
--- a/src/xmodem.cpp
+++ b/src/xmodem.cpp
@@ -1,3 +1,21 @@
+/**
+ * @file xmodem.cpp
+ * @brief Implementation of XMODEM protocol for Meshtastic devices.
+ *
+ * This file contains the implementation of the XMODEM protocol for Meshtastic devices. It is based on the XMODEM implementation
+ * by Georges Menie (www.menie.org) and has been adapted for protobuf encapsulation.
+ *
+ * The XMODEM protocol is used for reliable transmission of binary data over a serial connection. This implementation supports
+ * both sending and receiving of data.
+ *
+ * The XModemAdapter class provides the main functionality for the protocol, including CRC calculation, packet handling, and
+ * control signal sending.
+ *
+ * @copyright Copyright (c) 2001-2019 Georges Menie
+ * @author
+ * @author
+ * @date
+ */
 /***********************************************************************************************************************
  * based on XMODEM implementation by Georges Menie (www.menie.org)
  ***********************************************************************************************************************
@@ -36,6 +54,13 @@ XModemAdapter xModem;
 
 XModemAdapter::XModemAdapter() {}
 
+/**
+ * Calculates the CRC-16 CCITT checksum of the given buffer.
+ *
+ * @param buffer The buffer to calculate the checksum for.
+ * @param length The length of the buffer.
+ * @return The calculated checksum.
+ */
 unsigned short XModemAdapter::crc16_ccitt(const pb_byte_t *buffer, int length)
 {
     unsigned short crc16 = 0;
@@ -52,6 +77,15 @@ unsigned short XModemAdapter::crc16_ccitt(const pb_byte_t *buffer, int length)
     return crc16;
 }
 
+/**
+ * Calculates the checksum of the given buffer and compares it to the given
+ * expected checksum. Returns 1 if the checksums match, 0 otherwise.
+ *
+ * @param buf The buffer to calculate the checksum of.
+ * @param sz The size of the buffer.
+ * @param tcrc The expected checksum.
+ * @return 1 if the checksums match, 0 otherwise.
+ */
 int XModemAdapter::check(const pb_byte_t *buf, int sz, unsigned short tcrc)
 {
     return crc16_ccitt(buf, sz) == tcrc;
@@ -214,4 +248,4 @@ void XModemAdapter::handlePacket(meshtastic_XModem xmodemPacket)
         // Unknown control character
         break;
     }
-}
+}
\ No newline at end of file
diff --git a/variants/heltec_wireless_tracker/platformio.ini b/variants/heltec_wireless_tracker/platformio.ini
index 92e76a981..45be3bf98 100644
--- a/variants/heltec_wireless_tracker/platformio.ini
+++ b/variants/heltec_wireless_tracker/platformio.ini
@@ -8,4 +8,4 @@ build_flags =
 
 lib_deps =
   ${esp32s3_base.lib_deps}
-  lovyan03/LovyanGFX@^1.1.7
\ No newline at end of file
+  lovyan03/LovyanGFX@^1.1.8
\ No newline at end of file
diff --git a/variants/heltec_wireless_tracker/variant.h b/variants/heltec_wireless_tracker/variant.h
index 318454522..83f41ecdf 100644
--- a/variants/heltec_wireless_tracker/variant.h
+++ b/variants/heltec_wireless_tracker/variant.h
@@ -21,6 +21,7 @@
 #define TFT_OFFSET_Y 0
 #define VTFT_CTRL 46                  // Heltec Tracker needs this pulled low for TFT
 #define SCREEN_TRANSITION_FRAMERATE 1 // fps
+#define DISPLAY_FORCE_SMALL_FONTS
 
 #define VEXT_ENABLE Vext // active low, powers the oled display and the lora antenna boost
 #define BUTTON_PIN 0
diff --git a/variants/m5stack_core/platformio.ini b/variants/m5stack_core/platformio.ini
index a2330922e..84fb9f251 100644
--- a/variants/m5stack_core/platformio.ini
+++ b/variants/m5stack_core/platformio.ini
@@ -2,8 +2,6 @@
 extends = esp32_base
 board = m5stack-core-esp32
 board_level = extra
-upload_port = COM8
-monitor_port = COM8
 monitor_filters = esp32_exception_decoder
 build_src_filter = 
   ${esp32_base.build_src_filter}
@@ -28,4 +26,4 @@ lib_ignore =
   m5stack-core
 lib_deps = 
   ${esp32_base.lib_deps}
-  bodmer/TFT_eSPI@^2.4.76
\ No newline at end of file
+  lovyan03/LovyanGFX@^1.1.8
diff --git a/variants/m5stack_core/variant.h b/variants/m5stack_core/variant.h
index d9ef9ab28..22fa323d7 100644
--- a/variants/m5stack_core/variant.h
+++ b/variants/m5stack_core/variant.h
@@ -34,8 +34,13 @@
 #define GPS_RX_PIN 16
 #define GPS_TX_PIN 17
 
-// Define if screen should be mirrored left to right
-#define SCREEN_ROTATE
+#define TFT_HEIGHT 240
+#define TFT_WIDTH 320
+#define TFT_OFFSET_X 0
+#define TFT_OFFSET_Y 0
+#define TFT_BUSY -1
 
 // LCD screens are slow, so slowdown the wipe so it looks better
 #define SCREEN_TRANSITION_FRAMERATE 1 // fps
+
+#define ILI9341_SPI_HOST VSPI_HOST // VSPI_HOST or HSPI_HOST
diff --git a/variants/m5stack_coreink/variant.h b/variants/m5stack_coreink/variant.h
index 3abf16be7..5ec1a81a3 100644
--- a/variants/m5stack_coreink/variant.h
+++ b/variants/m5stack_coreink/variant.h
@@ -39,7 +39,9 @@
 #undef RF95_MOSI
 #undef RF95_NSS
 #define USE_RF95
+//#define USE_SX1280
 
+#ifdef USE_RF95
 #define RF95_SCK 18
 #define RF95_MISO 34
 #define RF95_MOSI 23
@@ -48,6 +50,22 @@
 #define LORA_RESET 26
 #define LORA_DIO1 RADIOLIB_NC
 #define LORA_DIO2 RADIOLIB_NC
+#endif
+
+#ifdef USE_SX1280
+#define RF95_SCK 18
+#define RF95_MISO 34
+#define RF95_MOSI 23
+#define RF95_NSS 14
+#define LORA_RESET 26
+#define LORA_DIO1 25
+#define LORA_DIO2 13
+#define SX128X_CS RF95_NSS
+#define SX128X_DIO1 LORA_DIO1
+#define SX128X_BUSY LORA_DIO2
+#define SX128X_RESET LORA_RESET
+#define SX128X_MAX_POWER 13 // 10
+#endif
 
 #define USE_EINK
 // https://docs.m5stack.com/en/core/coreink
@@ -59,3 +77,18 @@
 #define PIN_EINK_RES -1  // Connected but not needed
 #define PIN_EINK_SCLK 18 // EPD_SCLK
 #define PIN_EINK_MOSI 23 // EPD_MOSI
+
+#define BATTERY_PIN 35
+#define ADC_CHANNEL ADC1_GPIO35_CHANNEL
+// https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/schematic/Core/m5paper/M5_PAPER_SCH.pdf
+// https://github.com/m5stack/M5Core-Ink/blob/master/examples/Basics/FactoryTest/FactoryTest.ino#L58
+//  VBAT
+//   |
+//  R83 (3K)
+//   +
+//  R86 (11K)
+//   |
+//  GND
+// https://github.com/m5stack/M5Core-Ink/blob/master/examples/Basics/FactoryTest/FactoryTest.ino#L58
+#define ADC_MULTIPLIER 5 // Just a guess for now... more detailed getBatVoltage above
+// https://embeddedexplorer.com/esp32-adc-esp-idf-tutorial/
diff --git a/variants/nano-g2-ultra/platformio.ini b/variants/nano-g2-ultra/platformio.ini
index c00a9e5ac..d5e5a6137 100644
--- a/variants/nano-g2-ultra/platformio.ini
+++ b/variants/nano-g2-ultra/platformio.ini
@@ -4,10 +4,6 @@ extends = nrf52840_base
 board = nano-g2-ultra
 debug_tool = jlink
 
-# add our variants files to the include and src paths
-# define build flags for the TFT_eSPI library - NOTE: WE NOT LONGER USE TFT_eSPI, it was for an earlier version of the TTGO eink screens
-# -DBUSY_PIN=3 -DRST_PIN=2 -DDC_PIN=28 -DCS_PIN=30
-# add -DCFG_SYSVIEW if you want to use the Segger systemview tool for OS profiling.
 build_flags = ${nrf52840_base.build_flags} -Ivariants/nano-g2-ultra -D NANO_G2_ULTRA
   -L "${platformio.libdeps_dir}/${this.__env__}/BSEC2 Software Library/src/cortex-m4/fpv4-sp-d16-hard"
 build_src_filter = ${nrf52_base.build_src_filter} +<../variants/nano-g2-ultra>
diff --git a/variants/nano-g2-ultra/variant.h b/variants/nano-g2-ultra/variant.h
index da46f311d..4c1720af8 100644
--- a/variants/nano-g2-ultra/variant.h
+++ b/variants/nano-g2-ultra/variant.h
@@ -114,9 +114,8 @@ External serial flash W25Q16JV_IQ
 #define SX126X_CS (32 + 13) // FIXME - we really should define LORA_CS instead
 #define SX126X_DIO1 (32 + 10)
 // Note DIO2 is attached internally to the module to an analog switch for TX/RX switching
-//#define SX1262_DIO3 \
-    (0 + 21) // This is used as an *output* from the sx1262 and connected internally to power the tcxo, do not drive from the main
-// CPU?
+//#define SX1262_DIO3 (0 + 21)
+// This is used as an *output* from the sx1262 and connected internally to power the tcxo, do not drive from the main CPU?
 #define SX126X_BUSY (32 + 11)
 #define SX126X_RESET (32 + 15)
 #define SX126X_E22 //  DIO2 controlls an antenna switch and the TCXO voltage is controlled by DIO3
diff --git a/variants/t-deck/platformio.ini b/variants/t-deck/platformio.ini
index 8344fb990..c3c508a0f 100644
--- a/variants/t-deck/platformio.ini
+++ b/variants/t-deck/platformio.ini
@@ -11,4 +11,4 @@ build_flags = ${esp32_base.build_flags}
   -Ivariants/t-deck
 
 lib_deps = ${esp32s3_base.lib_deps}
-	lovyan03/LovyanGFX@^1.1.7
\ No newline at end of file
+	lovyan03/LovyanGFX@^1.1.8
\ No newline at end of file
diff --git a/variants/t-echo/platformio.ini b/variants/t-echo/platformio.ini
index 2f043108c..2555032df 100644
--- a/variants/t-echo/platformio.ini
+++ b/variants/t-echo/platformio.ini
@@ -4,9 +4,6 @@ extends = nrf52840_base
 board = t-echo
 debug_tool = jlink
 
-# add our variants files to the include and src paths
-# define build flags for the TFT_eSPI library - NOTE: WE NOT LONGER USE TFT_eSPI, it was for an earlier version of the TTGO eink screens
-# -DBUSY_PIN=3 -DRST_PIN=2 -DDC_PIN=28 -DCS_PIN=30
 # add -DCFG_SYSVIEW if you want to use the Segger systemview tool for OS profiling.
 build_flags = ${nrf52840_base.build_flags} -Ivariants/t-echo
   -L "${platformio.libdeps_dir}/${this.__env__}/BSEC2 Software Library/src/cortex-m4/fpv4-sp-d16-hard"
diff --git a/variants/t-watch-s3/platformio.ini b/variants/t-watch-s3/platformio.ini
index 709ea89ee..08751d463 100644
--- a/variants/t-watch-s3/platformio.ini
+++ b/variants/t-watch-s3/platformio.ini
@@ -12,6 +12,6 @@ build_flags = ${esp32_base.build_flags}
   -DPCF8563_RTC=0x51
 
 lib_deps = ${esp32s3_base.lib_deps}
-	lovyan03/LovyanGFX@^1.1.7
+	lovyan03/LovyanGFX@^1.1.8
   lewisxhe/PCF8563_Library@1.0.1
   adafruit/Adafruit DRV2605 Library@^1.2.2
\ No newline at end of file