I have run into a problem following the tutorial https://learn.adafruit.com/adding-a-rea ... 2026484-18.
After inputting echo pcf8523 0x68 > /sys/class/i2c-adapter/i2c-1/new_device, I bumped into the error
bash: echo: write error: Device or resource busy
I have googled around and found no luck in resolving the issue. Could anyone provide some insights?
Thanks,
Mengjia