UARTE in circular mode

[Martijn]

Hi,

I have a question about the UARTE peripheral. is it possible to keep the DMA running and let it write to ram in a circular way? I used DMA on the stm32 before and there we can set it in a circular mode. When the ptr reached the last configured ram address it automatically starts from the front. And while the DMA is running, is there any way to get the current amount in the buffer? Now i have to stop rx before the amount register becomes valid.

[Ole Bauck]

You are correct, sorry for that, the AMOUNT will only be updated at the ENDRX event. I don't know of any other way to count the bytes other than the one you have suggested.