First experimental support for Olimex ESP32 POE board

Ethernet is NOT implemented for now

platformio.ini

@@ -9,16 +9,13 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [platformio]
-default_envs = esp32
+default_envs = generic
 
 [env]
 framework = arduino
-
-[env:esp32]
 platform = espressif32@>4
 
 build_flags =
-    ${env.build_flags}
     -D=${PIOENV}
     -DCOMPONENT_EMBED_FILES=webapp_dist/index.html.gz:webapp_dist/zones.json.gz:webapp_dist/favicon.ico:webapp_dist/js/app.js.gz
 
@@ -31,12 +28,26 @@ lib_deps =
 extra_scripts =
     pre:auto_firmware_version.py
 
-board = esp32dev
 board_build.partitions = partitions_custom.csv
 board_build.filesystem = littlefs
 monitor_filters = time, colorize, log2file, esp32_exception_decoder
 monitor_port = COM4
 monitor_speed = 115200
 
 upload_protocol = esptool
-upload_port = COM4
+upload_port = COM4
+
+[env:generic]
+board = esp32dev
+
+[env:olimex_esp32_poe]
+; https://www.olimex.com/Products/IoT/ESP32/ESP32-POE/open-source-hardware
+
+board = esp32-poe
+build_flags = ${env.build_flags}
+    -DHOYMILES_PIN_MISO=15
+    -DHOYMILES_PIN_MOSI=2
+    -DHOYMILES_PIN_SCLK=14
+    -DHOYMILES_PIN_IRQ=13
+    -DHOYMILES_PIN_CE=16
+    -DHOYMILES_PIN_CS=5