USART1 IN DMA

[omid hamdi]

WHEN USED CIRCULAR DMA NO HAVE PROBLEM

BOUT IF USED NORMAL DMA AFTER SEND BUFER NEXT TIME WHEN ENABLE DMA STRIM BIT NEW TRANSFER NOT WORK IN RECIVED MODE EXACTLY SAME ONLY RECIVED ONE TIME

[Tesla DeLorean]

MAKE SURE NO ERROR STATUS ON USART, LIKE FRAMING OR OVERRUN, MUST CLEAR FOR RECEIVE TO WORK AGAIN