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Discussion Groups | TMS320C28x | UART, easy prob.

Technical discussions about the TI C28x DSPs (including the C2810, C2811, C2812, F2801, F2806, F2808, F2810,, F2811, F2812, R2811 and R2812).

  

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UART, easy prob. - hasan mustafa - Jul 28 13:29:12 2010

hi everyone

im using 2811,,,,the problem,is im trying to receive and send the same char
8-bit .from other processor

Uint16 Rx_UART, Tx_UART;

//Transmit&Receive
while ( ScibRegs.SCIFFRX.bit.RXFIFST != 0 ) {

        Rx_UART = ScibRegs.SCIRXBUF.all;

    Tx_UART = Rx_UART;
       }

    while (ScibRegs.SCIFFTX.bit.TXFFST != 0);
    ScibRegs.SCITXBUF = Tx_UART;
SciaRegs.SCIFFRX.bit.RXFFOVRCLR=1;   // Clear Overflow flag

its not working,,,,im sure about the baud rate,,,,,,

in the other processor,,,,i keep sending the same value,,,over and  over
______________________________
StarterWare provides C-based no-OS platform support for the C6000 DSP devices.
Click here for details.



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Re: UART, easy prob. - dengzhibin2007 - Jul 31 11:19:31 2010

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______________________________
StarterWare provides C-based no-OS platform support for the C6000 DSP devices.
Click here for details.



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Re: UART, easy prob. - hasan mustafa - Jul 31 11:19:55 2010

i think the baud rate is right,,,,because its working fine if i hashed the
condition of the receiving,,,while (ScibRegs.SCIFFTX.bit.TXFFST != 0);

also if you familiar with 97J60 controller,,,,its working only when i hash
the condition of the receiving,,,, the interrupt flag,,,,like here,,,
////////
        while(!DataRdyUART());
        c = ReadUART();
//////////////

// working only when i hash while(!DataRdyUART());,,,although its suppose to
be before Read instruction,,,,, so strange, i dont know why,,,,

the HW connection is cross,
Tx->Rx
Rx->Tx
just two pins connected

any help will be highly appreciated,,,

BR
Hasan




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