UART handler error

[michalt38]

Hello,
When I call uart irq like this:
uart.irq(trigger = UART.RX_ANY, handler = hand)
and hand function looks like this:
def hand():
return

I've got this error:
Uncaught exception in callback handler
TypeError:

And another thing is that when I write: bytes = UART.read() I've got this error:
argument num/types mismatch

What can cause those problems?

[michalt38]

This post is deleted!

[livius]

@michalt38 said in UART handler error:

I've got WiPy 1

I can not help more because i have only Wipy2.0.
Maybe someone else...

[michalt38]

@livius I've got WiPy 1

[livius]

@michalt38
Do you have Wipy1 or Wipy2.0?

And I found UART.irq doc here: http://docs.micropython.org/en/latest/wipy/library/machine.UART.html#machine.UART.irq

This doc is for Wipy1.
For Wipy2.0 doc are here
https://docs.pycom.io/pycom_esp32/index.html
uart is here
https://docs.pycom.io/pycom_esp32/library/machine.UART.html

[michalt38]

@livius Sorry, it was UART.read() and it is solved
And I found UART.irq doc here: http://docs.micropython.org/en/latest/wipy/library/machine.UART.html#machine.UART.irq

[livius]

@michalt38

Where do you found uart.irq docs?

and what do you pass as argument of UART.write() ?
It can not be empty - and it must by bytes()