====== Radio Programmer ======
The Radio Programmer is a black-box unit that automatically uploads a firmware to a device (radio) when connected.

This unit is based on a Raspberry Pi and a USB hub which connects to the devices. It detects the device connected and starts the firmware upload immediately. 

===== Auto detecting =====
Udev is used to auto detect the devices when connected.

Put this file in ''/etc/udev/rules.d/90-compass.rules''
<code>
# Run script when ESP device is connected
ACTION=="add", SUBSYSTEM=="tty", KERNEL=="ttyUSB*", RUN+="/opt/CG3/udev.sh"
</code>

===== Programming the device =====
Put this file in ''/opt/CG3/udev.sh''
<code>
#!/bin/sh

esptool.py -p /dev/$1 chip_id >> /tmp/udev.log
#esptool.py -p /dev/ttyUSB0 --baud 460800 write_flash -fm dio -fs 16m 0x00000 /opt/CG3/firmware.bin
</code>

Remember to make the file executable ''chmod +x /opt/CG3/udev.sh''
===== Updating FW to be uploaded =====