/**
* \brief Get state of Push to Talk from Parallel Port
* \param p
* \param pttx return value (must be non NULL)
* \return RIG_OK or < 0 error
*/
int par_ptt_get(hamlib_port_t *p, ptt_t *pttx)
{
switch (p->type.ptt) {
case RIG_PTT_PARALLEL: {
unsigned char ctl;
int status;
par_lock(p);
status = par_read_control(p, &ctl);
par_unlock(p);
*pttx = (ctl & PARPORT_CONTROL_INIT) &&
!(ctl & PARPORT_CONTROL_STROBE) ?
RIG_PTT_ON : RIG_PTT_OFF;
return status;
}
default:
rig_debug(RIG_DEBUG_ERR, "Unsupported PTT type %d\n",
p->type.ptt);
return -RIG_ENAVAIL;
}
return RIG_OK;
}
/**
* \brief Set or unset Push to talk bit on Parallel Port
* \param p
* \param pttx RIG_PTT_ON --> Set PTT
* \return RIG_OK or < 0 error
*/
int par_ptt_set(hamlib_port_t *p, ptt_t pttx)
{
switch(p->type.ptt) {
case RIG_PTT_PARALLEL:
{
unsigned char ctl;
int status;
par_lock (p);
status = par_read_control(p, &ctl);
if (status != RIG_OK)
return status;
/* Enable CW & PTT - /STROBE bit (pin 1) */
ctl &= ~PARPORT_CONTROL_STROBE;
/* TODO: kill parm.parallel.pin? */
/* PTT keying - /INIT bit (pin 16) (inverted) */
if (pttx == RIG_PTT_ON)
ctl |= PARPORT_CONTROL_INIT;
else
ctl &= ~PARPORT_CONTROL_INIT;
status = par_write_control(p, ctl);
par_unlock (p);
return status;
}
default:
rig_debug(RIG_DEBUG_ERR,"Unsupported PTT type %d\n",
p->type.ptt);
return -RIG_EINVAL;
}
return RIG_OK;
}
