RE: SCI Receicve is not working TMS570LS

Chuck Wong

Other Parts Discussed in Thread: HALCOGEN

Hi Jean-Marc,

I'm working with the TMS570 HDK and the LS3137 MCU, with VCLK configured to use 60 MHz. For some reason the while() loop of the following code never end.

If I omit the while() loop, then the IDLE bit is set and I can't TX nor RX.

Any clue?

void tagRs232::Init()
{
    SCI2GCR0    = 0x00000001;       // bring SCI2 out of reset to configure SCI registers
    SCI2GCR1    = 0x03020022;       // TX/RX enabled, continue, ready, internal SCICLK, asynchronous timing mode, 1 stop bit, non parity
    SCI2SETINT = 0x00000300;       // enable TX/RX interrupts
    SCI2FORMAT = 0x00000007;       // SCI mode character length is 8 bits
    SCI2BRS     = 0x00000040;       // baudrate is 57600 bps
    SCI2PIO0    = 0x00000006;       // SCIRX and SCITX as SCI function pins
    SCI2GCR1    = 0x030200A2;       // set SW_nRST=1 to enable SCI

    while ((SCI2FLR & 0x4) == 0x4) // wait for the IDLE bit to be cleared
        continue;
}