Posted on July 03, 2005 at 22:53Dear all:
I'm new in STR71x.After reading UART section,I have some question about UARTn interrupt driver as follow:
1: after reset ,UARTn_SR=0X06(default value,TxHalfEmpty and TxEmpty bit set 1),if I set TxEmptyIE,it will immediately generate a interrupter request although I don't write anything to UARTn_TxBUFR??
2: after sending data by interrupt ,the TxEmpty set 1,uart interrupt request will be generated one by one unless I disable TxEmptyIE bit.Is that rignt?
Coud you tell me the reason and how you deal with it?If you have example code about UART interrupt ,Please help.Thanks
