rename variant and add guard macros

variants/esp32s3/ELECROW-ThinkNode-M7/platformio.ini

@@ -1,17 +1,15 @@
-[env:thinknode_g3]
+[env:thinknode_m7]
 extends = esp32s3_base
 board = ESP32-S3-WROOM-1-N4
 board_build.psram_type = opi
 
 build_flags = 
   ${esp32s3_base.build_flags}
-  -D ELECROW_ThinkNode_G3
+  -D ELECROW_ThinkNode_M7
   -D HAS_UDP_MULTICAST=1
   -D BOARD_HAS_PSRAM
   -D PRIVATE_HW
-#  -D CONFIG_ETH_ENABLED=1
-#  -D CONFIG_ETH_USE_ESP32_EMAC=1
-  -I variants/esp32s3/ELECROW-ThinkNode-G3
+  -I variants/esp32s3/ELECROW-ThinkNode-M7
   -mfix-esp32-psram-cache-issue
 
 lib_ignore = 
@@ -19,4 +17,5 @@ lib_ignore =
 
 lib_deps = 
   ${esp32s3_base.lib_deps}
-#  file://../ESP32-CH390/ESP32-CH390-1.0.1.tar.gz
+  symlink://E:/dev/embedded/mt/ESP32-CH390-master
+  # https://github.com/caveman99/ESP32-CH390.git#c72bcd25f566b3ecd24f26893e70cc9d3211cd68

variants/esp32s3/ELECROW-ThinkNode-M7/variant.h

@@ -7,7 +7,7 @@
 
 #define LED_PIN 6 // The blue LORA LED
 #define LED_STATE_ON 0
-#define BUTTON_PIN 4 // the external user button of the device, BOOT and RESET are not accessible without opening it up.
+#define BUTTON_PIN 4 // the external user button of the device, BOOT and RESET are not accessible without opening it.
 
 #define USE_SX1262
 #define LORA_SCK 42
@@ -24,13 +24,13 @@
 #define SX126X_DIO3_TCXO_VOLTAGE 1.8
 #define PIN_POWER_EN 45
 
-// #define HAS_ETHERNET 1
-// #define USE_CH390D 1 // this driver uses the same stack as the ESP32 Wifi driver
+#define HAS_ETHERNET 1
+#define USE_CH390D 1 // this driver uses the same stack as the ESP32 Wifi driver
 
-// #define ETH_MISO_PIN 47
-// #define ETH_MOSI_PIN 21
-// #define ETH_SCLK_PIN 48
-// #define ETH_CS_PIN 45
-// #define ETH_INT_PIN 14
-// #define ETH_RST_PIN -1
-// #define ETH_ADDR 1
+#define ETH_MISO_PIN 12
+#define ETH_MOSI_PIN 11
+#define ETH_SCLK_PIN 13
+#define ETH_CS_PIN 14
+#define ETH_INT_PIN 10
+#define ETH_RST_PIN 9
+//#define ETH_ADDR 1