STR912 UART2 - No RX IRQ after 1 byte (FIFO disabled)

[regulus]

Posted on March 10, 2009 at 06:57

STR912 UART2 - No RX IRQ after 1 byte (FIFO disabled)

[regulus]

Posted on May 17, 2011 at 09:58

Hi Everybody!

I cannot reach receiver IRQ on UART2 (STR912FAW44 rev.H) after one byte!

I have configured UART with FIFO disabled. Everything works fine when the received answers are longer than 1 byte. But when answer is one byte long, the STR912 UART2 does not generate RX IRQ.

I need interrupt after each byte to service STM32 Cortex boot loader protocol, that (unfortunately) gives such (1 byte length) results, ex. 0x79 or 0x1F.

Earlier i have done receiving in polling (works OK), but now i want to have IRQ.

Can someone help me ??

P.S. STR912 Documentation is - like always - completely poor...