Hello everyone,
I would like to customize the board of the BBB to add a wifi module (f.e. the esp8622). Did someone know a little tutorial or could give a little advice how to do that?
Thanks very much for your help.
best regards
Eric
Hi Eric!
I guess you mean ESP8266. You’ll not need to customize the BBB. Just connect an Esp module to the BBB headers and use a serial port for communication. The pins depend on the serial port in use. I recommend UART-4. The following commands work on a ‘bone’ kernel supporting the capemgr:
Activate and initiate the serial port by
sudo su echo BB-UART4 > /sys/devices/platform/bone_capemgr/slots exit stty -F /dev/ttyS4 115200 raw -echo
Wire the module
- ESP GND → BBB P9_01 (ground)
- ESP VDD → BBB P9_03 (3V3)
- ESP EN → BBB P9_03 (3V3, only some modules like Esp-12e)
- ESP TXD → BBB P9_11 (UART-4 RX)
- ESP RXD → BBB P9_13 (UART-4 TX)
Then you can send data to the Esp
echo $'AT\r' > /dev/ttyS4
And receive data by
cat /dev/ttyS4
It’s more convenient to use tools like nodempu-uploader.py to communicate (option -terminal) or load files to the Esp file system.
To upload firmware use esptool.py.
Good luck!