ESP32: Initial sort variants by platform (#7340)

variants/esp32/radiomaster_900_bandit_nano/variant.h

@@ -0,0 +1,81 @@
+/*
+ Initial settings and work by https://github.com/uberhalit and re-work by https://github.com/gjelsoe
+ Unit provided by Radio Master RC
+ https://radiomasterrc.com/products/bandit-nano-expresslrs-rf-module with 0.96" OLED display
+*/
+
+/*
+  I2C SDA and SCL.
+*/
+#define I2C_SDA 14
+#define I2C_SCL 12
+
+/*
+  No GPS - but free solder pads are available inside the case.
+*/
+#undef GPS_RX_PIN
+#undef GPS_TX_PIN
+
+/*
+  Pin connections from ESP32-D0WDQ6 to SX1276.
+*/
+#define LORA_DIO0 22
+#define LORA_DIO1 21
+#define LORA_SCK 18
+#define LORA_MISO 19
+#define LORA_MOSI 23
+#define LORA_CS 4
+#define LORA_RESET 5
+#define LORA_TXEN 33
+
+/*
+  This unit has a FAN built-in.
+  FAN is active at 250mW on it's ExpressLRS Firmware.
+*/
+#define RF95_FAN_EN 2
+
+/*
+  LED PIN setup.
+*/
+#define LED_PIN 15
+
+/*
+  Five way button when using ADC.
+  https://github.com/ExpressLRS/targets/blob/f3215b5ec891108db1a13523e4163950cfcadaac/TX/Radiomaster%20Bandit.json#L41
+*/
+#define INPUTBROKER_EXPRESSLRSFIVEWAY_TYPE
+#define PIN_JOYSTICK 39
+#define JOYSTICK_ADC_VALS /*UP*/ 3227, /*DOWN*/ 0, /*LEFT*/ 1961, /*RIGHT*/ 2668, /*OK*/ 1290, /*IDLE*/ 4095
+
+#define DISPLAY_FLIP_SCREEN
+
+/*
+  No External notification.
+*/
+#undef EXT_NOTIFY_OUT
+
+/*
+  Remapping PIN Names.
+  Note, that this unit uses RFO
+*/
+#define USE_RF95
+#define USE_RF95_RFO
+#define RF95_CS LORA_CS
+#define RF95_DIO1 LORA_DIO1
+#define RF95_TXEN LORA_TXEN
+#define RF95_RESET LORA_RESET
+#define RF95_MAX_POWER 12
+
+/*
+  This module has Skyworks SKY66122 controlled by dacWrite
+  power rangeing from 100mW to 1000mW.
+
+  Mapping of PA_LEVEL to Power output: GPIO26/dacWrite
+  168 -> 100mW  -> 2.11v
+  148 -> 250mW  -> 1.87v
+  128 -> 500mW  -> 1.63v
+  90  -> 1000mW -> 1.16v
+*/
+#define RF95_PA_EN 26
+#define RF95_PA_DAC_EN
+#define RF95_PA_LEVEL 90