After installation of homegear-gateway in version 0.7.39-2773 with a SCC on a RPiZero 1.3 with Raspbian stretch 9.8 the GPIO17 and GPIO18 by default both do not get initialized as OUTPUTs. It seems like the default https://www.raspberrypi.org/documentation/configuration/pin-configuration.md initialized them as INPUTs and do remain.
Because of that the SCC will not be initialized and will not work.
Solution:
add to https://www.raspberrypi.org/documentation/configuration/config-txt/gpio.md:
# Set GPIO direction for GPIO17 & GPIO18
gpio=17=op,dl
gpio=18=op,dl
sorry, can’t edit links in upper post because too restrict editing rules of this forum…
After installation of homegear-gateway in version 0.7.39-2773 with a SCC on a RPiZero 1.3 with Raspbian stretch 9.8 the GPIO17 and GPIO18 by default both do not get initialized as OUTPUTs. It seems like the default dt-blob.bin initialized them as INPUTs and they do remain.
Because of that the SCC will not be initialized and will not work.
Solution:
add to boot/config.txt:
# Set GPIO direction for GPIO17 & GPIO18
gpio=17=op,dl
gpio=18=op,dl
after next boot the SCC got initialized correct.
after debugging of hours, hope this will help somebody else as well