I have just upgraded to the latest OS Raspbian Pixel and my serial connection has stopped working. I know that the hardware is configured correctly as it worked pre-update. I have updated to the latest firmware as well.
sudo apt-get update sudo apt-get upgrade sudo rpi-update
I have verified that the pi3 is getting serial information. I have employed the
dtoverlay=pi3-disable-bt in the /boot/config.txt.
The /boot/cmdline.txt it is as follows:
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p7 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait quiet splash plymouth.ignore-serial-consoles
I have then run
sudo systemctl disable hciuart
sudo minicom -D /dev/ttyS0 -b19200
yields no results. I have already read all the posts, like this one, How do I make serial work on the Raspberry Pi3 and tried everything to no avail. Thank you for your help.