Posted on May 17, 2011 at 09:35 The Following code may show you a bug of STR912.
if Run the following program segment, the LED will be on
SSP0->DR=0; //1 Send Data To SSP0
Delay_us(100); //2 Wait 100 us for the end of data transfer
for (i=0; i
T0= SSP0->DR;
StartDMA_Rx(RxBu,1); //4 Start DMA to receive the Data from SSPO
DMA_Rx_WaitEnd; //5 Waiting the end of DMA operation
LED_ON(LED3); //6 Turn On LED
The result is LED on. It means I can't clear Rx FIFO of SSP0 by reading SSP0->DR, it will alway remain one data for DMA Rx operation.
can any one give me a explanation?
[ This message was edited by: seawwh on 31-01-2007 15:19 ]
