Added RAK11200 board variant support (meshtastic#1177)

* Added RAK11200 board variant support

boards/wiscore_rak11200.json

@@ -0,0 +1,39 @@
+{
+  "build": {
+    "arduino":{
+      "ldscript": "esp32_out.ld"
+    },
+    "core": "esp32",
+    "extra_flags": "-DARDUINO_ESP32_DEV",
+    "f_cpu": "240000000L",
+    "f_flash": "40000000L",
+    "flash_mode": "dio",
+    "mcu": "esp32",
+    "variant": "WisCore_RAK11200_Board"
+  },
+  "connectivity": [
+    "wifi",
+    "bluetooth",
+    "ethernet",
+    "can"
+  ],
+  "frameworks": [
+    "arduino",
+    "espidf"
+  ],
+  "name": "WisCore RAK11200 Board",
+  "upload": {
+    "flash_size": "4MB",
+    "maximum_ram_size": 327680,
+    "maximum_size": 4194304,
+    "protocols": [
+      "esptool",
+      "espota",
+      "ftdi"
+    ],
+    "require_upload_port": true,
+    "speed": 460800
+  },
+  "url": "https://www.rakwireless.com",
+  "vendor": "RAKwireless"
+}

src/configuration.h

@@ -161,6 +161,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // This string must exactly match the case used in release file names or the android updater won't work
 #define HW_VENDOR HardwareModel_DIY_V1
 
+#elif defined(RAK_11200)
+// This string must exactly match the case used in release file names or the android updater won't work
+#define HW_VENDOR HardwareModel_RAK11200
+
 #elif defined(ARDUINO_HELTEC_WIFI_LORA_32_V2)
 
 #ifdef HELTEC_V2_0

variants/WisCore_RAK11200_Board/platformio.ini

@@ -0,0 +1,5 @@
+[env:rak11200]
+extends = esp32_base
+board = wiscore_rak11200
+build_flags = 
+  ${esp32_base.build_flags} -D RAK_11200 -I variants/WisCore_RAK11200_Board

variants/WisCore_RAK11200_Board/variant.h

@@ -0,0 +1,80 @@
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+
+#define EXTERNAL_NUM_INTERRUPTS 16
+#define NUM_DIGITAL_PINS 40
+#define NUM_ANALOG_INPUTS 16
+
+#define analogInputToDigitalPin(p) (((p) < 20) ? (esp32_adc2gpio[(p)]) : -1)
+#define digitalPinToInterrupt(p) (((p) < 40) ? (p) : -1)
+#define digitalPinHasPWM(p) (p < 34)
+
+#define LED_GREEN 12
+#define LED_BLUE 2
+
+#define LED_BUILTIN LED_GREEN
+
+static const uint8_t TX = 1;
+static const uint8_t RX = 3;
+
+#define TX1 21
+#define RX1 19
+
+#define WB_IO1 14
+#define WB_IO2 27
+#define WB_IO3 26
+#define WB_IO4 23
+#define WB_IO5 13
+#define WB_IO6 22
+#define WB_SW1 34
+#define WB_A0 36
+#define WB_A1 39
+#define WB_CS 32
+#define WB_LED1 12
+#define WB_LED2 2
+
+static const uint8_t SDA = 4;
+static const uint8_t SCL = 5;
+
+static const uint8_t SS = 32;
+static const uint8_t MOSI = 25;
+static const uint8_t MISO = 35;
+static const uint8_t SCK = 33;
+
+/* -------- Meshtastic pins -------- */
+
+#define I2C_SDA SDA
+#define I2C_SCL SCL
+
+#define GPS_RX_PIN RX
+#define GPS_RX_PIN TX
+
+#define LED_PIN LED_BLUE
+
+#define PIN_VBAT WB_A0
+
+// https://docs.rakwireless.com/Product-Categories/WisBlock/RAK13300/
+
+#define LORA_DIO0 26  // a No connect on the SX1262/SX1268 module
+#define LORA_RESET WB_IO4 // RST for SX1276, and for SX1262/SX1268
+#define LORA_DIO1 WB_IO6  // IRQ for SX1262/SX1268
+#define LORA_DIO2 WB_IO5  // BUSY for SX1262/SX1268
+#define LORA_DIO3     // Not connected on PCB, but internally on the TTGO SX1262/SX1268, if DIO3 is high the TXCO is enabled
+
+// This is a hack for the radio pin run-around with ESP32 variants
+#define RF95_SCK SCK
+#define RF95_MISO MISO
+#define RF95_MOSI MOSI
+#define RF95_NSS SS
+
+#define USE_SX1262
+#define SX126X_CS (RF95_NSS)// NSS for SX126X
+#define SX126X_DIO1 (LORA_DIO1)
+#define SX126X_BUSY (LORA_DIO2)
+#define SX126X_RESET (LORA_RESET)
+#define SX126X_TXEN (-1)
+#define SX126X_RXEN (WB_IO3)
+#define SX126X_E22 // DIO2 controlls an antenna switch and the TCXO voltage is controlled by DIO3
+#endif /* Pins_Arduino_h */