TM4C123G UART Interrupt Problem

Xbee

I am having a problem with UART interrupt flags. When I remove the connection from the UART pin its suppose to raise the break error flag. Well it does raise the break error flag but also raises the frame error flag along with it.

How can I rectify this error?

Thanks.

over 9 years ago

0 QJ Wang over 9 years ago

TI__Guru**** 196776 points

Hello,

Clear the bit 7 (FEIM) of UARTIM register to not sent frame error interrupt to the interrupt controller. You can use the API (UARTIntDisable) to disable the INT source.

Regards,

0 Xbee over 9 years ago in reply to QJ Wang

Prodigy 230 points

I basically want both error checks. The frame error works fine. The break error gives an additional frame error flag. Is there any other solution?

Also do you know why thats happening?

Thanks.

0 Amit Ashara over 9 years ago in reply to Xbee

TI__Guru**** 244400 points

Hello AM95,

There can be a break and frame error when the cable is removed, so it is logical for both interrupts to be asserted.

Regards
Amit

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TM4C123G UART Interrupt Problem