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Last active February 15, 2019 11:47
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serial.md

Setting up serial on Raspberry Pi 3

Disable bluetooth and setup serial on /dev/ttyAMA0

  1. /boot/config.txt must contain:
enable_uart=1
dtoverlay=pi3-disable-bt

  1. Remove console=serial0,115200 entry from /boot/cmdline.txt

  2. Disable hciuart

$ sudo systemctl disable hciuart
  1. Reboot
$ sudo systemctl reboot
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Note: When setting up a Raspberry Pi 3 I failed to do step 2 which resulted in the port intermittently failing. I could send some commands but after that communication would fail and require re-opening.

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