Question

These PowerBurst times are used in the sample code referenced in the TMS37157 Development Tool FAQ, but there seems to be no clue as to what these values are. It looks like they are provided by the desktop app, but I only have the binary for that.

struct stLFpacket               
{
    unsigned short usPowerBurst[4];
    ...
struct stLFpacket aLFpacket;
...
void DoPowerBurst(char number)
{
    if ((command1.field.PPM_PWM == 1) && (number == 2))
        SetOutput(&P1OUT, P1_TXCT, HIGH, BLCtimes.usToff, USEC, HALT);      
    SetOutput(&P1OUT, P1_TXCT, LOW, aLFpacket.usPowerBurst[number-1], MSEC, 
        HALT);
}
...
void GetPowerBurst(char number, char* Index)
{
    if (command1.field.TwoPB_OnePB == ONE_BYTE)
            aLFpacket.usPowerBurst[number-1] = USB_Buffer.ucData[*Index];
    else
            aLFpacket.usPowerBurst[number-1] = 16 * USB_Buffer.ucData[*Index] 
                + USB_Buffer.ucData[(*Index)+1];
    *Index++;
}

Answer 1

According to [e-mail],

The power burst times used for
TMS37157 should be 15-50ms for PB1 and
50ms for PB2. In the base station
source code, dopowerburst(2),
dopowerburst(3), dopowerburst(4)
appear to be used for wake patterns in
some of our other automotive
transponders that operate a little
different from TMS37157.