int bladerf_dac_write(struct bladerf *dev, uint16_t val)
{
int status;
MUTEX_LOCK(&dev->ctrl_lock);
status = DAC_WRITE(dev, val);
MUTEX_UNLOCK(&dev->ctrl_lock);
return status;
}
int init_device(struct bladerf *dev)
{
int status;
uint32_t val;
/* Readback the GPIO values to see if they are default or already set */
status = CONFIG_GPIO_READ( dev, &val );
if (status != 0) {
log_debug("Failed to read GPIO config %s\n", bladerf_strerror(status));
return status;
}
if ((val & 0x7f) == 0) {
log_verbose( "Default GPIO value found - initializing device\n" );
/* Set the GPIO pins to enable the LMS and select the low band */
status = CONFIG_GPIO_WRITE(dev, 0x57);
if (status != 0) {
return status;
}
/* Disable the front ends */
status = lms_enable_rffe(dev, BLADERF_MODULE_TX, false);
if (status != 0) {
return status;
}
status = lms_enable_rffe(dev, BLADERF_MODULE_RX, false);
if (status != 0) {
return status;
}
/* Set the internal LMS register to enable RX and TX */
status = LMS_WRITE(dev, 0x05, 0x3e);
if (status != 0) {
return status;
}
/* LMS FAQ: Improve TX spurious emission performance */
status = LMS_WRITE(dev, 0x47, 0x40);
if (status != 0) {
return status;
}
/* LMS FAQ: Improve ADC performance */
status = LMS_WRITE(dev, 0x59, 0x29);
if (status != 0) {
return status;
}
/* LMS FAQ: Common mode voltage for ADC */
status = LMS_WRITE(dev, 0x64, 0x36);
if (status != 0) {
return status;
}
/* LMS FAQ: Higher LNA Gain */
status = LMS_WRITE(dev, 0x79, 0x37);
if (status != 0) {
return status;
}
/* Set a default samplerate */
status = si5338_set_sample_rate(dev, BLADERF_MODULE_TX, 1000000, NULL);
if (status != 0) {
return status;
}
status = si5338_set_sample_rate(dev, BLADERF_MODULE_RX, 1000000, NULL);
if (status != 0) {
return status;
}
/* Set a default frequency of 1GHz */
status = tuning_set_freq(dev, BLADERF_MODULE_TX, 1000000000);
if (status != 0) {
return status;
}
status = tuning_set_freq(dev, BLADERF_MODULE_RX, 1000000000);
if (status != 0) {
return status;
}
/* Set the calibrated VCTCXO DAC value */
status = DAC_WRITE(dev, dev->dac_trim);
if (status != 0) {
return status;
}
/* Set up LMS DC offset register calibration and initial IQ settings,
* if any tables have been loaded already */
status = apply_lms_dc_cals(dev);
}
return status;
}
