Squashed commit of the following:

commit 2e25bff15413f2365f1b18c901f93297ce07c645
Author: jeremy <jeremy@ubuntu>
Date:   Thu Sep 12 10:19:07 2024 -0400

    Adds t-echo support

commit aa44625847179c5b3c4d03b9f7e062f409da0d8a
Author: jeremy <jeremy@ubuntu>
Date:   Thu Sep 12 10:19:07 2024 -0400

    Adds t-echo support

.vscode/settings.json

@@ -0,0 +1,16 @@
+{
+    "files.associations": {
+        "array": "cpp",
+        "deque": "cpp",
+        "list": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "unordered_set": "cpp",
+        "vector": "cpp",
+        "string_view": "cpp",
+        "initializer_list": "cpp",
+        "ranges": "cpp",
+        "span": "cpp",
+        "format": "cpp"
+    }
+}

Boards.h

@@ -39,6 +39,7 @@
   #define BOARD_RNODE_NG_20   0x40
   #define BOARD_RNODE_NG_21   0x41
   #define BOARD_T3S3   0x42
+  #define BOARD_TECHO         0x43
   #define BOARD_GENERIC_NRF52 0x50
   #define BOARD_RAK4631       0x51
 
@@ -50,7 +51,7 @@
   #if defined(ESP32)
     #define PLATFORM PLATFORM_ESP32
     #define MCU_VARIANT MCU_ESP32
-  #elif defined(NRF52840_XXAA)
+  #elif defined(NRF52840_XXAA) || defined(_VARIANT_PCA10056_)
     #include <variant.h>
     #define PLATFORM PLATFORM_NRF52
     #define MCU_VARIANT MCU_NRF52
@@ -629,7 +630,66 @@
     #endif
   
   #elif MCU_VARIANT == MCU_NRF52
-    #if BOARD_MODEL == BOARD_RAK4631 || BOARD_MODEL == BOARD_FREENODE
+     #if BOARD_MODEL == BOARD_TECHO
+      #define VALIDATE_FIRMWARE false
+      //#define GPS_BAUD_RATE 115200
+      //#define PIN_GPS_TX 41
+      //#define PIN_GPS_RX 40
+      #define EEPROM_SIZE 296
+      #define EEPROM_OFFSET EEPROM_SIZE-EEPROM_RESERVED
+      //#define HAS_EEPROM true
+      //#define HAS_SD true
+      //#define HAS_DISPLAY true
+      //#define HAS_CONSOLE true
+      //#define HAS_TXCO true
+      //#define DISPLAY EINK_BW
+      //#define HAS_BLE true
+      //#define HAS_PMU true
+      #define CONFIG_UART_BUFFER_SIZE 40000
+      #define CONFIG_QUEUE_0_SIZE 6144
+      #define CONFIG_QUEUE_MAX_LENGTH 200
+      #define BLE_MANUFACTURER "LilyGO"
+      #define BLE_MODEL "T-Echo"
+      #define INTERFACE_COUNT 1
+      //#define I2C_SDA 26
+      //#define I2C_SCL 27
+      #define CONFIG_QUEUE_1_SIZE 40000
+      // first interface in list is the primary
+      const uint8_t interfaces[INTERFACE_COUNT] = {SX126X};
+      const bool interface_cfg[INTERFACE_COUNT][3] = { 
+                  // SX1262
+          {
+              false, // DEFAULT_SPI
+              true, // HAS_TCXO
+              true  // DIO2_AS_RF_SWITCH
+          }
+      };
+
+      const int8_t interface_pins[INTERFACE_COUNT][10] = { 
+                  // SX1262
+          {
+              24, // pin_ss 
+              19, // pin_sclk
+              22, // pin_mosi
+              23, // pin_miso
+              17, // pin_busy
+              20, // pin_dio
+              25, // pin_reset
+              -1, // pin_txen
+              -1, // pin_rxen
+              21  // pin_tcxo_enable
+          }
+      };
+
+      const int pin_disp_cs = 30;
+      const int pin_disp_dc = 28;
+      const int pin_disp_reset = 2;
+      const int pin_disp_busy = 3;
+      const int pin_disp_en = 43;
+
+      const int pin_led_rx = LED_BLUE;
+      const int pin_led_tx = LED_RED;
+    #elif BOARD_MODEL == BOARD_RAK4631 || BOARD_MODEL == BOARD_FREENODE
       #define HAS_EEPROM false
       #define HAS_DISPLAY true
       #define DISPLAY EINK_BW

Device.h

@@ -275,6 +275,7 @@ bool device_firmware_ok() {
 
 #if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
 bool device_init() {
+  #if VALIDATE_FIRMWARE
   if (bt_ready) {
     #if MCU_VARIANT == MCU_ESP32
     for (uint8_t i=0; i<EEPROM_SIG_LEN; i++){dev_eeprom_signature[i]=EEPROM.read(eeprom_addr(ADDR_SIGNATURE+i));}
@@ -310,9 +311,9 @@ bool device_init() {
 
     hash.end(dev_hash);
     #endif
+
     device_load_signature();
     device_validate_signature();
-
     device_validate_partitions();
 
     #if MCU_VARIANT == MCU_NRF52
@@ -323,5 +324,8 @@ bool device_init() {
   } else {
     return false;
   }
+  #else //if VALIDATE_FIRMWARE is false
+  return true;
+  #endif
 }
 #endif

Makefile

@@ -37,6 +37,7 @@ prep-samd:
 
 prep-nrf:
 	arduino-cli core update-index --config-file arduino-cli.yaml
+	arduino-cli core install adafruit:nrf52 --config-file arduino-cli.yaml
 	arduino-cli core install rakwireless:nrf52 --config-file arduino-cli.yaml
 	arduino-cli lib install "Crypto"
 	arduino-cli lib install "Adafruit GFX Library"
@@ -62,6 +63,14 @@ firmware-tbeam:
 firmware-tbeam_sx126x:
 	arduino-cli compile --fqbn esp32:esp32:t-beam -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x33\" \"-DMODEM=0x03\""
 
+firmware-techo: firmware-techo4 firmware-techo9
+
+firmware-techo4:
+	arduino-cli compile --fqbn adafruit:nrf52:pca10056 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x43\" \"-DBOARD_VARIANT=0x16\""
+
+firmware-techo9:
+	arduino-cli compile --fqbn adafruit:nrf52:pca10056 -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x43\"  \"-DBOARD_VARIANT=0x17\""
+
 firmware-t3s3_sx1262:
 	arduino-cli compile --fqbn "esp32:esp32:esp32s3:CDCOnBoot=cdc" -e --build-property "build.partitions=no_ota" --build-property "upload.maximum_size=2097152" --build-property "compiler.cpp.extra_flags=\"-DBOARD_MODEL=0x42\" \"-DBOARD_VARIANT=0xA1\""
 
@@ -123,6 +132,12 @@ upload-tbeam:
 	@sleep 3
 	python3 ./Release/esptool/esptool.py --chip esp32 --port $(or $(port), /dev/ttyACM0) --baud 921600 --before default_reset --after hard_reset write_flash -z --flash_mode dio --flash_freq 80m --flash_size 4MB 0x210000 ./Release/console_image.bin
 
+upload-techo:
+	arduino-cli upload -p $(or $(port), /dev/ttyACM0) --fqbn adafruit:nrf52:pca10056
+	unzip -o build/adafruit.nrf52.pca10056/RNode_Firmware_CE.ino.zip -d build/adafruit.nrf52.pca10056
+	#rnodeconf $(or $(port), /dev/ttyACM0) --firmware-hash $$(sha256sum ./build/adafruit.nrf52.pca10056/RNode_Firmware_CE.ino.bin | grep -o '^\S*')
+	../Reticulum/RNS/Utilities/rnodeconf.py $(or $(port), /dev/ttyACM0) --firmware-hash $$(sha256sum ./build/adafruit.nrf52.pca10056/RNode_Firmware_CE.ino.bin | grep -o '^\S*')
+
 upload-lora32_v10:
 	arduino-cli upload -p $(or $(port), /dev/ttyUSB0) --fqbn esp32:esp32:ttgo-lora32
 	@sleep 1

RNode_Firmware_CE.ino

@@ -19,6 +19,7 @@
 
 #if MCU_VARIANT == MCU_NRF52
   #define INTERFACE_SPI
+  #if BOARD_MODEL == BOARD_RAK4631 
         // Required because on RAK4631, non-default SPI pins must be initialised when class is declared.
       SPIClass interface_spi[1] = {
             // SX1262
@@ -29,6 +30,17 @@
                 interface_pins[0][2]
                )
       };
+  #elif BOARD_MODEL == BOARD_TECHO
+    SPIClass interface_spi[1] = {
+            // SX1262
+            SPIClass(
+                NRF_SPIM3, 
+                interface_pins[0][3], 
+                interface_pins[0][1], 
+                interface_pins[0][2]
+               )
+      };
+  #endif
 #endif
 
 #ifndef INTERFACE_SPI

ROM.h

@@ -32,6 +32,9 @@
     #define MODEL_12 0x12
     #define MODEL_13 0x13 // RAK4631 LF with WisBlock SX1280 module (LIBSYS002)
     #define MODEL_14 0x14 // RAK4631 HF with WisBlock SX1280 module (LIBSYS002)
+	#define PRODUCT_TECHO 0x15
+	#define MODEL_16 0x16 // T-Echo 433
+	#define MODEL_17 0x17 // T-Echo 915
     #define MODEL_21 0x21 // European band, 868MHz
 	#define MODEL_A1 0xA1
     #define MODEL_A5 0xA5 // T3S3 SX1280 PA

Radio.cpp

@@ -744,6 +744,8 @@ void sx126x::enableTCXO() {
       uint8_t buf[4] = {MODE_TCXO_3_3V_6X, 0x00, 0x00, 0xFF};
     #elif BOARD_MODEL == BOARD_TBEAM
       uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};
+    #elif BOARD_MODEL == BOARD_TECHO
+      uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};
     #elif BOARD_MODEL == BOARD_T3S3
       uint8_t buf[4] = {MODE_TCXO_1_8V_6X, 0x00, 0x00, 0xFF};
     #else
@@ -2563,6 +2565,9 @@ void sx128x::disableCrc()
 byte sx128x::random()
 {
     // todo: implement
+    return 0x4; //chosen  by fair die roll
+                //guarenteed to be random
+                //https://xkcd.com/221/
 }
 
 void sx128x::setSPIFrequency(uint32_t frequency)

Utilities.h

@@ -210,6 +210,11 @@ uint8_t boot_vector = 0x00;
 		void led_rx_off() {	digitalWrite(pin_led_rx, LOW); }
 		void led_tx_on()  { digitalWrite(pin_led_tx, HIGH); }
 		void led_tx_off() { digitalWrite(pin_led_tx, LOW); }
+	#elif BOARD_MODEL == BOARD_TECHO
+		void led_rx_on()  { digitalWrite(pin_led_rx, HIGH); }
+		void led_rx_off() {	digitalWrite(pin_led_rx, LOW); }
+		void led_tx_on()  { digitalWrite(pin_led_tx, HIGH); }
+		void led_tx_off() { digitalWrite(pin_led_tx, LOW); }
 	#endif
 #endif
 
@@ -1160,6 +1165,8 @@ uint16_t getQueueSize(uint8_t index) {
         case 11:
             return CONFIG_QUEUE_11_SIZE;
         #endif
+		default:
+            return CONFIG_QUEUE_0_SIZE;
     }
 }
 
@@ -1334,7 +1341,7 @@ bool eeprom_product_valid() {
 	#if PLATFORM == PLATFORM_ESP32
 	if (rval == PRODUCT_RNODE || rval == BOARD_RNODE_NG_20 || rval == BOARD_RNODE_NG_21 || rval == PRODUCT_HMBRW || rval == PRODUCT_TBEAM || rval == PRODUCT_T32_10 || rval == PRODUCT_T32_20 || rval == PRODUCT_T32_21 || rval == PRODUCT_H32_V2 || rval == PRODUCT_H32_V3) {
 	#elif PLATFORM == PLATFORM_NRF52
-	if (rval == PRODUCT_RAK4631 || rval == PRODUCT_HMBRW || rval == PRODUCT_FREENODE) {
+	if (rval == PRODUCT_TECHO || rval == MODEL_16 || rval == MODEL_17 || rval == PRODUCT_RAK4631 || rval == PRODUCT_HMBRW || rval == PRODUCT_FREENODE) {
 	#else
 	if (false) {
 	#endif
@@ -1362,6 +1369,8 @@ bool eeprom_model_valid() {
 	if (model == MODEL_FF || model == MODEL_FE) {
 	#elif BOARD_MODEL == BOARD_TBEAM
 	if (model == MODEL_E4 || model == MODEL_E9 || model == MODEL_E3 || model == MODEL_E8) {
+	#elif BOARD_MODEL == BOARD_TECHO
+	if (model == MODEL_16 || model == MODEL_17) {
 	#elif BOARD_MODEL == BOARD_LORA32_V1_0
 	if (model == MODEL_BA || model == MODEL_BB) {
 	#elif BOARD_MODEL == BOARD_LORA32_V2_0