Add rs485 atom board

lib/hardware/GwHardware.h

@@ -80,6 +80,29 @@
 #define GWLED_BRIGHTNESS 64
 #endif
 
+#ifdef BOARD_M5ATOM_RS485_CANUNIT
+#define ESP32_CAN_TX_PIN GPIO_NUM_26
+#define ESP32_CAN_RX_PIN GPIO_NUM_32
+//if using rs232
+#define GWSERIAL_TX 19
+#define GWSERIAL_RX 22
+#define GWSERIAL_MODE "UNI"
+#define GWBUTTON_PIN GPIO_NUM_39
+#define GWBUTTON_ACTIVE LOW
+//if GWBUTTON_PULLUPDOWN we enable a pulup/pulldown
+#define GWBUTTON_PULLUPDOWN 
+//led handling
+//if we define GWLED_FASTNET the arduino fastnet lib is used
+#define GWLED_FASTLED
+#define GWLED_TYPE SK6812
+//color schema for fastled
+#define GWLED_SCHEMA GRB
+#define GWLED_PIN  GPIO_NUM_27
+//brightness 0...255
+#define GWLED_BRIGHTNESS 64
+#endif
+
+
 #ifdef BOARD_M5STICK_CANUNIT
 #define ESP32_CAN_TX_PIN GPIO_NUM_32
 #define ESP32_CAN_RX_PIN GPIO_NUM_33

platformio.ini

@@ -68,6 +68,15 @@ build_flags =
 upload_port = /dev/esp32
 upload_protocol = esptool
 
+[env:m5stack-atom-rs485-canunit]
+board = m5stack-atom
+lib_deps = ${env.lib_deps}
+build_flags = 
+        -D BOARD_M5ATOM_RS485_CANUNIT
+        ${env.build_flags}
+upload_port = /dev/esp32
+upload_protocol = esptool
+
 
 [env:m5stickc-atom-canunit]
 board = m5stick-c