/***************************************************************************//**
* @brief Initializes the ADF4351.
*
* @param channel - 0 = RX channel, 1 = TX channel
*
* @return Returns 0 in case of success or negative error code.
*******************************************************************************/
int32_t adf4351_setup(int8_t channel)
{
struct adf4351_state *st = &adf4351_st[(int32_t)channel];
st->pdata = &adf4351_pdata_lpc;
adf4351_out_altvoltage0_refin_frequency(st->pdata->clkin, channel);
adf4351_out_altvoltage0_frequency_resolution(st->pdata->channel_spacing, channel);
st->regs[ADF4351_REG5] = ADF4351_REG5_LD_PIN_MODE_DIGITAL + 0x00180000;
st->regs[ADF4351_REG4] = ADF4351_REG4_FEEDBACK_FUND +
ADF4351_REG4_8BIT_BAND_SEL_CLKDIV(246) +
ADF4351_REG4_RF_OUT_EN +
ADF4351_REG4_OUTPUT_PWR(3);
st->regs[ADF4351_REG3] = ADF4351_REG3_12BIT_CLKDIV(150);
st->regs[ADF4351_REG2] = ADF4351_REG2_10BIT_R_CNT(4) +
ADF4351_REG2_CHARGE_PUMP_CURR_uA(2496) +
ADF4351_REG2_PD_POLARITY_POS +
ADF4351_REG2_POWER_DOWN_EN;
st->regs[ADF4351_REG1] = ADF4351_REG1_PRESCALER +
ADF4351_REG1_MOD(307);
st->regs[ADF4351_REG0] = ADF4351_REG0_FRACT(39) +
ADF4351_REG0_INT(78);
return adf4351_sync_config(st, channel);
}
/**************************************************************************//**
* @brief Sets the Tx center frequency resolution
*
* @param resolution: desired frequency resolution in Hz
*
* @return If success, return exact calculated resolution in Hz,
* if error, return -1
******************************************************************************/
int32_t XCOMM_SetTxResolution(uint32_t resolution)
{
int32_t res = adf4351_out_altvoltage0_frequency_resolution(resolution,
ADF4351_TX_CHANNEL);
if(res < 0)
return -1;
XCOMM_State.txResolution = res;
XCOMM_State.txResolutionValid = 1;
return XCOMM_State.txResolution;
}
/**************************************************************************//**
* @brief Gets the Tx center frequency resolution
*
* @param readMode: read frequency resolution from driver or HW
*
* @return If success, return frequency resolution in Hz,
* if error, return -1
******************************************************************************/
int32_t XCOMM_GetTxResolution(XCOMM_ReadMode readMode)
{
int32_t res;
if(readMode == XCOMM_ReadMode_FromHW)
{
res = adf4351_out_altvoltage0_frequency_resolution(INT32_MAX,
ADF4351_TX_CHANNEL);
if(res < 0)
return -1;
XCOMM_State.txResolution = res;
XCOMM_State.txResolutionValid = 1;
}
return XCOMM_State.txResolutionValid ? XCOMM_State.txResolution : -1;
}
