<![CDATA[CAN BUS Error with M5Stack and COMMU Module]]>Hi, I send the command via canbus to the M5stack but receive a different message.

Example:
I send 00 00 00 D8 0D 06 01
I receive 00 00 00 D8 r 08 01

It doesn't seem to like '0D' and sees it as CR

Is this a bug? Any ideas on how to fix it?

thank you!

]]>https://community.m5stack.com/topic/5258/can-bus-error-with-m5stack-and-commu-moduleRSS for NodeWed, 29 Apr 2026 19:10:57 GMTSat, 29 Apr 2023 18:30:58 GMT60<![CDATA[Reply to CAN BUS Error with M5Stack and COMMU Module on Sun, 30 Apr 2023 21:06:50 GMT]]>Solved with the code ;-)

message = com.commu_can_read_message(0)
hex_list = []
for b in message:
hex_str = hex(b)[2:]
if len(hex_str) < 2:
hex_str = '0' + hex_str
hex_list.append(hex_str)

]]>https://community.m5stack.com/post/20717https://community.m5stack.com/post/20717Sun, 30 Apr 2023 21:06:50 GMT<![CDATA[Reply to CAN BUS Error with M5Stack and COMMU Module on Sun, 30 Apr 2023 10:10:04 GMT]]>Hi,
I also have a bug with the COMMU module and the CAN BUS.
The code I have is working with the firmware 1.11.6, but not anymore with the 1.11.7.
I get the following error message "function takes 4 positional arguments but 3 were given". This is the python command "com.commu_can_init(3, 3)".

Any update on that ?

]]>https://community.m5stack.com/post/20714https://community.m5stack.com/post/20714Sun, 30 Apr 2023 10:10:04 GMT