/**
* Disconnects antenna from the rx path.
*/
void rf_path_set_disconnect_rx_antenna(const uint_fast8_t enable)
{
//todo also disable rx amp when active?
if (switchctrl & SWITCHCTRL_TX)
return;
if (enable)
{
/**
* open all switches in RX path
*/
/*
gpio_clear(PORT_TX, PIN_TX);
gpio_clear(PORT_RX, PIN_RX);
*/
gpio_clear(PORT_AMP_BYPASS, PIN_AMP_BYPASS);
gpio_clear(PORT_TX_AMP, PIN_TX_AMP);
gpio_set(PORT_NO_TX_AMP_PWR, PIN_NO_TX_AMP_PWR);
gpio_clear(PORT_RX_AMP, PIN_RX_AMP);
gpio_set(PORT_NO_RX_AMP_PWR, PIN_NO_RX_AMP_PWR);
}
else
{
switchctrl_set(switchctrl);
}
}
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);
}
/* antenna port power control */
void rf_path_set_antenna(const uint_fast8_t enable) {
if (enable) {
switchctrl |= SWITCHCTRL_ANT_PWR;
} else {
switchctrl &= ~(SWITCHCTRL_ANT_PWR);
}
switchctrl_set(switchctrl);
}
/* antenna port power control */
void rf_path_set_antenna(rf_path_t* const rf_path, const uint_fast8_t enable) {
if (enable) {
rf_path->switchctrl |= SWITCHCTRL_ANT_PWR;
} else {
rf_path->switchctrl &= ~(SWITCHCTRL_ANT_PWR);
}
switchctrl_set(rf_path, rf_path->switchctrl);
}
void rf_path_init(void) {
ssp1_set_mode_max5864();
max5864_shutdown();
ssp1_set_mode_max2837();
max2837_setup();
max2837_start();
rffc5071_setup();
switchctrl_set(switchctrl);
}
void rf_path_init(rf_path_t* const rf_path) {
ssp1_set_mode_max5864();
max5864_setup(&max5864);
max5864_shutdown(&max5864);
ssp1_set_mode_max2837();
max2837_setup(&max2837);
max2837_start(&max2837);
rffc5071_setup(&rffc5072);
switchctrl_set(rf_path, switchctrl);
}
void rf_path_set_lna(const uint_fast8_t enable) {
if( enable ) {
if( switchctrl & SWITCHCTRL_TX ) {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=0 */
switchctrl |= SWITCHCTRL_NO_RX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR);
} else {
/* AMP_BYPASS=0, NO_RX_AMP_PWR=0, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_NO_TX_AMP_PWR;
switchctrl &= ~(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_RX_AMP_PWR);
}
} else {
/* AMP_BYPASS=1, NO_RX_AMP_PWR=1, NO_TX_AMP_PWR=1 */
switchctrl |= SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_NO_TX_AMP_PWR | SWITCHCTRL_NO_RX_AMP_PWR;
}
switchctrl_set(switchctrl);
}
void rf_path_pin_setup(rf_path_t* const rf_path) {
#ifdef HACKRF_ONE
/* Configure RF switch control signals */
scu_pinmux(SCU_HP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_LP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX_MIX_BP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_NO_MIX_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_RX_MIX_BP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX_AMP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_MIX_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_RX, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_NO_TX_AMP_PWR, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_AMP_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_RX_AMP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_NO_RX_AMP_PWR, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
/* Configure RF power supply (VAA) switch */
scu_pinmux(SCU_NO_VAA_ENABLE, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
/* Configure RF switch control signals as outputs */
gpio_output(rf_path->gpio_amp_bypass);
gpio_output(rf_path->gpio_no_mix_bypass);
gpio_output(rf_path->gpio_rx_amp);
gpio_output(rf_path->gpio_no_rx_amp_pwr);
gpio_output(rf_path->gpio_hp);
gpio_output(rf_path->gpio_lp);
gpio_output(rf_path->gpio_tx_mix_bp);
gpio_output(rf_path->gpio_rx_mix_bp);
gpio_output(rf_path->gpio_tx_amp);
gpio_output(rf_path->gpio_no_tx_amp_pwr);
gpio_output(rf_path->gpio_tx);
gpio_output(rf_path->gpio_mix_bypass);
gpio_output(rf_path->gpio_rx);
/*
* Safe (initial) switch settings turn off both amplifiers and antenna port
* power and enable both amp bypass and mixer bypass.
*/
switchctrl_set(rf_path, SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_MIX_BYPASS);
#endif
}
void rf_path_pin_setup() {
#ifdef HACKRF_ONE
/* Configure RF switch control signals */
scu_pinmux(SCU_HP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_LP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX_MIX_BP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_NO_MIX_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_RX_MIX_BP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX_AMP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_TX, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_MIX_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_RX, SCU_GPIO_FAST | SCU_CONF_FUNCTION4);
scu_pinmux(SCU_NO_TX_AMP_PWR, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_AMP_BYPASS, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_RX_AMP, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
scu_pinmux(SCU_NO_RX_AMP_PWR, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
/* Configure RF power supply (VAA) switch */
scu_pinmux(SCU_NO_VAA_ENABLE, SCU_GPIO_FAST | SCU_CONF_FUNCTION0);
/* Configure RF switch control signals as outputs */
GPIO0_DIR |= PIN_AMP_BYPASS;
GPIO1_DIR |= (PIN_NO_MIX_BYPASS | PIN_RX_AMP | PIN_NO_RX_AMP_PWR);
GPIO2_DIR |= (PIN_HP | PIN_LP | PIN_TX_MIX_BP | PIN_RX_MIX_BP | PIN_TX_AMP);
GPIO3_DIR |= PIN_NO_TX_AMP_PWR;
GPIO5_DIR |= (PIN_TX | PIN_MIX_BYPASS | PIN_RX);
/*
* Safe (initial) switch settings turn off both amplifiers and antenna port
* power and enable both amp bypass and mixer bypass.
*/
switchctrl_set(SWITCHCTRL_AMP_BYPASS | SWITCHCTRL_MIX_BYPASS);
/* Configure RF power supply (VAA) switch control signal as output */
GPIO_DIR(PORT_NO_VAA_ENABLE) |= PIN_NO_VAA_ENABLE;
/* Safe state: start with VAA turned off: */
disable_rf_power();
#endif
}
void rf_path_set_filter(const rf_path_filter_t filter) {
switch(filter) {
default:
case RF_PATH_FILTER_BYPASS:
switchctrl |= SWITCHCTRL_MIX_BYPASS;
rffc5071_disable();
break;
case RF_PATH_FILTER_LOW_PASS:
switchctrl &= ~(SWITCHCTRL_HP | SWITCHCTRL_MIX_BYPASS);
rffc5071_enable();
break;
case RF_PATH_FILTER_HIGH_PASS:
switchctrl &= ~SWITCHCTRL_MIX_BYPASS;
switchctrl |= SWITCHCTRL_HP;
rffc5071_enable();
break;
}
switchctrl_set(switchctrl);
}
