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Hi
I found a weird thing happening with the UART controller in the MSP430F5510.
UCA0CTL1 |= UCSWRST; // Put state machine in reset UCA0CTL0 = 0; // no parity, LSB first, 8 bit data, one stop bit, UART mode, asynchronous UCA0CTL1 |= UiUart.Clk ; // SMCLK UCA0BR0 = UiUart.Br0; // 32Khz, 9600 baud, UCA0BR1 = UiUart.Br1; // 32Khz, 9600 baud, UCA0MCTL |= UiUart.Mctl; // Modulation UCBRSx=1, UCBRFx=0 use for 9600 baud, 32Khz xtal UCA0CTL1 &= ~UCSWRST; // Initialize USCI state machine UCA0IE |= UCRXIE;
Im initializing the UART with the above configuration and RX interrupt enabled
I was able to receive bytes with RX interrupt enabled without any problem
But in one part of code i have to receive bytes without enabling the RX interrupt
so First I had reset the uart state machine with the following config before receiving further bytes
UCA0CTL1 |= UCSWRST;
delay_us(10);
UCA0CTL1 &= ~UCSWRST;
Then used the following code to copy the received byte by checkin RXIFG
if ( UCA0IFG & UCRXIFG ) { /* Read the register */ bCommnErrorFlag = UCA0STAT & UCRXERR; /* if no error */ if (!bCommnErrorFlag) { /* get the data,if available */ *pu8Data = UCA0RXBUF; } }
But UCRXIFG flag is never set even though bytes were sent to this UART from the other end(transmitter end)
Can anyone point out what might be the problem?
Thanks.
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