About the button

[kalajiao]

When I use a key, I assign a value to a variable using keys 1 and 2 respectively, but it's strange why I can assign a value only on the first press. I added the ability to assign a value to a variable in the key action section of the can_pal demo, in which I receive a new value every time. Why is that? It's Fang's where I use the buttons

[Robin_Shen]

Seems that you forget Clear interrupt flag.

You can set a breakpoint in the buttonisr function to check whether it will enter this function every time you press a key.

Best Regards,
Robin
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