cancel
Showing results for 
Search instead for 
Did you mean: 

polling interrupt flag, without activate interrupt

JCuna.1
Senior

I was working with SPI dma transmision. I config two channels for transmit and receive, however I didn't enable interrupt option in dma, however, before each transmision I cleared tc flag, and then enable spi while polling the tc flag. This works really well.

Now I am trying to do the same for usart, I config the dma peripheral before transmission and reception, and I don't activate the interrupt, but I clear the tc flag for each dma channel. This works well the first time, but second time, rx line does not generate tc flag rise.

This discussion is locked. Please start a new topic to ask your question.
1 ACCEPTED SOLUTION

Accepted Solutions
TDK
Guru

The behavior of the TC flag is not dependent on whether or not interrupts are enabled.

If you feel a post has answered your question, please click "Accept as Solution".

View solution in original post

1 REPLY 1
TDK
Guru

The behavior of the TC flag is not dependent on whether or not interrupts are enabled.

If you feel a post has answered your question, please click "Accept as Solution".