SIO Command $DF Set External SIO Clock - FujiNetWIFI/fujinet-firmware GitHub Wiki
This is a command for Device $70 - The FujiNet Device itself (see SIO-Commands-for-Device-ID-$70).
Set External SIO Clock Rate. ($DF)
Description
Tells FujiNet to turn on an external clock using the aux1/aux2 bytes, the rate given is in kHz. This can be used to initiate synchronous serial transfer with such routines as UHSIO.
Parameters
| DCB | Value |
|---|---|
| DDEVIC | $70 |
| DUNIT | $01 |
| DCOMND | $DF |
| DSTATS | $00 |
| DBUF | NULL |
| DTIMLO | $0F |
| DBYT | 0 |
| DAUX | 16-bit value, LSB, rate in kHz. |
Examples
CC65
/**
* Set CLOCKIN clock rate to rate.
*/
void fuji_sio_set_sio_external_clock(unsigned short rate)
{
OS.dcb.ddevic=0x70;
OS.dcb.dunit=1;
OS.dcb.dcomnd=0xDF;
OS.dcb.dstats=0x00;
OS.dcb.dbuf=NULL;
OS.dcb.dtimlo=0x0F;
OS.dcb.dbyt=0;
OS.dcb.daux=rate;
siov();
}