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Hello, In polling mode uart works fine but when I try to use Uart interrupts in C5407 theres something wrong while reading data. I do this way: 1) I set up the register IER (interrupt enable register) and enable receive interrupt (IER=1) 2) I don't use FIFO. 3) In function uart_isr() I read RBR (receive buffer reg.) in such way: // USAR = RBR_SUBADDR; // rword = (USDR & 0x00FF); 4) I don't use CSL. I receive interrupt only ones, but the buffer is not being read, and data is still in RBR. Next time uart doesn't interrupt. What should I do? I tried to insert a small delay before reading RBR in uart_isr() but still the same. Does anyone know what is going on? Thanks for any help. Maciek |
uart interrupt trouble in C5407
Started by ●February 20, 2005
