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);
}
void set_transceiver_mode(const transceiver_mode_t new_transceiver_mode) {
baseband_streaming_disable();
transceiver_mode = new_transceiver_mode;
usb_init_buffers_bulk();
if( transceiver_mode == TRANSCEIVER_MODE_RX ) {
gpio_clear(PORT_LED1_3, PIN_LED3);
gpio_set(PORT_LED1_3, PIN_LED2);
usb_endpoint_init(&usb_endpoint_bulk_in);
rffc5071_rx(switchctrl);
//rffc5071_set_frequency(1700, 0); // 2600 MHz IF - 1700 MHz LO = 900 MHz RF
max2837_start();
max2837_rx();
} else if (transceiver_mode == TRANSCEIVER_MODE_TX) {
gpio_clear(PORT_LED1_3, PIN_LED2);
gpio_set(PORT_LED1_3, PIN_LED3);
usb_endpoint_init(&usb_endpoint_bulk_out);
rffc5071_tx(switchctrl);
//rffc5071_set_frequency(1700, 0); // 2600 MHz IF - 1700 MHz LO = 900 MHz RF
max2837_start();
max2837_tx();
} else {
gpio_clear(PORT_LED1_3, PIN_LED2);
gpio_clear(PORT_LED1_3, PIN_LED3);
max2837_stop();
return;
}
sgpio_configure(transceiver_mode, true);
nvic_set_priority(NVIC_SGPIO_IRQ, 0);
nvic_enable_irq(NVIC_SGPIO_IRQ);
SGPIO_SET_EN_1 = (1 << SGPIO_SLICE_A);
sgpio_cpld_stream_enable();
}
