helper script for uploading uf2, flashing firmware, openin uart

esp_helper.py

@@ -0,0 +1,35 @@
+import time
+import os
+import subprocess
+import argparse
+
+parser = argparse.ArgumentParser()
+
+parser.add_argument('-p', action='store', dest='port_num',
+                    help='Board port name')
+parser.add_argument('-uf2', action='store', dest='uf2',
+                    help='.UF2 file')
+
+results = parser.parse_args()
+dest_port = results.port_num
+uf2_file = results.uf2
+
+def search_ports():
+	proc = subprocess.Popen(["ls /dev/cu.* | grep cu.usbmodem"], stdout=subprocess.PIPE, shell=True)
+	(out, err) = proc.communicate()
+	avail_ports = out.decode('utf-8')
+	return avail_ports
+
+# Scan all ports for FEATHERBOOT
+avail_ports = search_ports()
+while not avail_ports:
+	search_ports()
+	print("Board not found, double-tap RESET to enter the bootloader...")
+	time.sleep(1)
+
+# cp provided uf2 to featherboot
+
+# wait for featherboot to pop back up as a usbmodem
+
+# execute esptool on port with compiled fw, the start up miniterm.py
+