/**************************************************************************//**
* @brief Calibrates the ADC DCO clock delay
*
* @return If success, returns DCO clock delay code. If the DCO clock is
* inverted 0x100 is added to the returned DCO value
* if error,return -1
******************************************************************************/
int32_t XCOMM_CalibrateAdcDco(void)
{
int32_t ret;
ADC_Core_Write(ADC_CORE_DMA_CHAN_SEL,0x00);
ad9643_dco_clock_invert(0);
ret = ad9643_dco_calibrate_2c();
ADC_Core_Write(ADC_CORE_DMA_CHAN_SEL,0x02);
return ret;
}
/**************************************************************************//**
* @brief Calibrates the ADC DCO clock delay
*
* @return If success, returns DCO clock delay code
* if error,return -1
******************************************************************************/
int32_t XCOMM_CalibrateAdcDco(void)
{
int32_t ret;
ADC_Core_Write(ADC_CORE_DMA_CHAN_SEL,0x00);
ad9643_dco_clock_invert(0);
ret = ad9643_dco_calibrate_2c();
if(ret<0)
{
ad9643_dco_clock_invert(1);
ret = ad9643_dco_calibrate_2c();
if (!(ret<0))
{
ret |= 0x0100;
}
}
ADC_Core_Write(ADC_CORE_DMA_CHAN_SEL,0x02);
return ret;
}
/***************************************************************************//**
* @brief Initializes the AD9643.
*
* @return Negative error code or 0 in case of success.
*******************************************************************************/
int32_t ad9643_setup()
{
int32_t ret = 0;
ad9643_reset();
ad9643_write(AD9643_REG_CLK_PHASE_CTRL, AD9643_CLK_PHASE_CTRL_EVEN_ODD_MODE_EN);
ADC_Core_Write(ADC_CORE_ADC_CTRL,ADC_CORE_SIGNEXTEND | ADC_CORE_SCALE_OFFSET_EN);
ADC_Core_Write(ADC_CORE_CA_OFFS_SCALE,ADC_CORE_OFFSET(0) | ADC_CORE_SCALE(0x8000));
ADC_Core_Write(ADC_CORE_CB_OFFS_SCALE,ADC_CORE_OFFSET(0) | ADC_CORE_SCALE(0x8000));
ad9643_write(AD9643_REG_OUTPUT_MODE, AD9643_OUTPUT_MODE_DEF | AD9643_OUTPUT_MODE_TWOS_COMPLEMENT);
ad9643_write(AD9643_REG_TEST_MODE, AD9643_TEST_MODE_OFF);
ad9643_write(AD9643_REG_TRANSFER, AD9643_TRANSFER_EN);
ret = ad9643_dco_calibrate_2c();
if(ret < 0)
{
ad9643_dco_clock_invert(1);
ret = ad9643_dco_calibrate_2c();
}
ADC_Core_Write(ADC_CORE_DMA_CHAN_SEL,0x02);
return ret < 0 ? -1 : 0;
}