void pin_setup(void)
{
int i;
#ifdef AIRSPY_NOS
#else /* AIRSPY One/Demo */
uint8_t serial_clock_rate;
uint8_t clock_prescale_rate;
#endif
/* Configure all GPIO as Input (safe state) */
GPIO0_DIR = 0;
GPIO1_DIR = 0;
GPIO2_DIR = 0;
GPIO3_DIR = 0;
GPIO4_DIR = 0;
GPIO5_DIR = 0;
GPIO6_DIR = 0;
GPIO7_DIR = 0;
/* Pin configuration for all pins */
for(i = 0; i < GPIO_CONF_NB; i++)
{
scu_pinmux(gpio_conf[i].group_pin, gpio_conf[i].scu_conf);
}
/* GPIO1[7] on P1_14 as output. */
GPIO1_DIR |= PIN_EN_R820T;
disable_r820t_power();
/* GPIO1[13] on P2_13 as output. */
GPIO1_DIR |= PIN_EN_BIAST;
disable_biast_power();
#ifdef AIRSPY_NOS
/* GPIO0[12] on P1_17 as output. */
GPIO0_DIR |= PIN_EN_LED1;
#else /* AIRSPY One/Demo */
/* Configure SSP1 Peripheral */
#define SCU_SSP1_SCK (P1_19) /* P1_19 */
scu_pinmux(SCU_SSP1_SCK, (SCU_SSP_IO | SCU_CONF_FUNCTION1));
/* Freq About 1.12MHz => Freq = PCLK / (CPSDVSR * [SCR+1]) with PCLK=PLL1=288MHz */
clock_prescale_rate = 2;
serial_clock_rate = 128;
ssp_init(SSP1_NUM,
SSP_DATA_8BITS,
SSP_FRAME_SPI,
SSP_CPOL_0_CPHA_0,
serial_clock_rate,
clock_prescale_rate,
SSP_MODE_NORMAL,
SSP_MASTER,
SSP_SLAVE_OUT_ENABLE);
#endif
led_off();
}
void ADCHS_stop(airspy_samplerate_t conf_num)
{
start_stop_adchs_m4(conf_num, STOP_ADCHS_CMD);
/* Re-Init I2C0 & I2C1 after PLL1 frequency is modified */
i2c0_init(AIRSPY_I2C0_PLL1_LS_HS_CONF_VAL); /* Si5351C I2C peripheral */
i2c1_init(AIRSPY_I2C1_PLL1_LS_CONF_VAL); /* R820T I2C peripheral */
disable_r820t_power();
}
