add pinout to post example for particle argon boards

Author: brentru

examples/espatcontrol_post.py

@@ -16,11 +16,21 @@
 
 URL = "https://io.adafruit.com/api/v2/webhooks/feed/"+settings['aio_feed_webhook']+"?value="
 
+# With a Metro or Feather M4
 resetpin = DigitalInOut(board.D5)
 rtspin = DigitalInOut(board.D9)
 uart = busio.UART(board.TX, board.RX, timeout=0.1)
 
-
+# With a Particle Argon
+# RX = board.ESP_TX
+# TX = board.ESP_RX
+# resetpin = DigitalInOut(board.ESP_WIFI_EN)
+# rtspin = DigitalInOut(board.ESP_CTS)
+# uart = busio.UART(TX, RX, timeout=0.1)
+# esp_boot = DigitalInOut(board.ESP_BOOT_MODE)
+# from digitalio import Direction
+# esp_boot.direction = Direction.OUTPUT
+# esp_boot.value = True
 
 print("Post to a URL", URL)