UART initialization failed on Raspberry Pi 4
matsujirushi opened this issue · comments
Hi,
When I try to use UART on Raspberry Pi 4, the following error occurs.
Error message:
$ sudo python3 uart-test.py
Traceback (most recent call last):
File "/home/pi/work/uart-test.py", line 6, in <module>
uart = mraa.Uart(0)
File "/usr/local/lib/python3.9/dist-packages/mraa.py", line 601, in __init__
_mraa.Uart_swiginit(self, _mraa.new_Uart(*args))
ValueError: Error initialising UART
Code:
#!/usr/bin/env python3
import mraa
import time
uart = mraa.Uart(0)
It seems that device_path is not set.
Line 240 in 046bdd0
path == NULL
Line 217 in 046bdd0
plat->uart_dev[index].device_path == NULL
Does anyone know the cause?