Hey together,
I have a question regarding the UART RX on the ADSP-21569. I managed to build a continous DMA receiver by using 2 descriptors pointing circular to each other, thats perfect. The size of the buffers are 32 byte. So this means I always get an callback when i received 32 bytes via UART. But what happens when I only receive 31 bytes for whatever reason. I will not get any callback and the data stays in the buffer forever. Is there a way to detect, for example after 100ms, that there is data in the buffer and to read it out?
On some know MCUs this is done via the UART IDLE detection. Meaning when there is silence for more that 1 byte on the bus the UART IDLE interrupt is triggered and the data can be flushed from the DMA. I cant find any information about the IDLE interrupt but maybe there is a way to do it via polling, every 100ms or so.
Best regards,
Eric
