void rf_path_set_direction(const rf_path_direction_t direction) {
/* Turn off TX and RX amplifiers, then enable based on direction and bypass state. */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
switch(direction) {
case RF_PATH_DIRECTION_TX:
switchctrl |= SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* TX amplifier is in path, be sure to enable TX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_TX_AMP_PWR;
}
rffc5071_tx();
if( switchctrl & SWITCHCTRL_MIX_BYPASS ) {
rffc5071_disable();
} else {
rffc5071_enable();
}
ssp1_set_mode_max5864();
max5864_tx();
ssp1_set_mode_max2837();
max2837_tx();
sgpio_configure(SGPIO_DIRECTION_TX);
break;
case RF_PATH_DIRECTION_RX:
switchctrl &= ~SWITCHCTRL_TX;
if( (switchctrl & SWITCHCTRL_AMP_BYPASS) == 0 ) {
/* RX amplifier is in path, be sure to enable RX amplifier. */
switchctrl &= ~SWITCHCTRL_NO_RX_AMP_PWR;
}
rffc5071_rx();
if( switchctrl & SWITCHCTRL_MIX_BYPASS ) {
rffc5071_disable();
} else {
rffc5071_enable();
}
ssp1_set_mode_max5864();
max5864_rx();
ssp1_set_mode_max2837();
max2837_rx();
sgpio_configure(SGPIO_DIRECTION_RX);
break;
case RF_PATH_DIRECTION_OFF:
default:
#ifdef HACKRF_ONE
rf_path_set_antenna(0);
#endif
/* Set RF path to receive direction when "off" */
switchctrl &= ~SWITCHCTRL_TX;
rffc5071_disable();
ssp1_set_mode_max5864();
max5864_standby();
ssp1_set_mode_max2837();
max2837_set_mode(MAX2837_MODE_STANDBY);
sgpio_configure(SGPIO_DIRECTION_RX);
break;
}
switchctrl_set(switchctrl);
}
usb_request_status_t usb_vendor_request_set_antenna_enable(
usb_endpoint_t* const endpoint, const usb_transfer_stage_t stage)
{
if (stage == USB_TRANSFER_STAGE_SETUP) {
switch (endpoint->setup.value) {
case 0:
rf_path_set_antenna(&rf_path, 0);
usb_transfer_schedule_ack(endpoint->in);
return USB_REQUEST_STATUS_OK;
case 1:
rf_path_set_antenna(&rf_path, 1);
usb_transfer_schedule_ack(endpoint->in);
return USB_REQUEST_STATUS_OK;
default:
return USB_REQUEST_STATUS_STALL;
}
} else {
return USB_REQUEST_STATUS_OK;
}
}
