C++ (Cpp) ADI_DDS_INIT Exemples

Exemple #1

Fichier : dac_core.c Projet : 363546178/no-OS

/***************************************************************************//**
 * @brief dds_set_phase
*******************************************************************************/
void dds_set_phase(uint32_t chan, uint32_t phase)
{
	uint64_t val64;
	uint32_t reg;

	dds_st.cached_phase[chan] = phase;
	dac_stop();
	dac_read(ADI_REG_CHAN_CNTRL_2_IIOCHAN(chan), &reg);
	reg &= ~ADI_DDS_INIT(~0);
	val64 = (uint64_t) phase * 0x10000ULL + (360000 / 2);
	do_div(&val64, 360000);
	reg |= ADI_DDS_INIT(val64);
	dac_write(ADI_REG_CHAN_CNTRL_2_IIOCHAN(chan), reg);
	dac_start_sync(0);
}

Exemple #2

Fichier : dac_core.c Projet : randmax/no-OS

/***************************************************************************//**
 * @brief dds_default_setup
*******************************************************************************/
static int dds_default_setup(uint32_t chan, uint32_t phase,
                             uint32_t freq, uint32_t scale)
{
    uint64_t val64;
    uint32_t val;

    dds_st.cached_freq[chan] = freq;
    dds_st.cached_phase[chan] = phase;
    dds_st.cached_scale[chan] = scale;
    val64 = (u64) freq * 0xFFFFULL;
    do_div(val64, *dds_st.dac_clk);
    val = ADI_DDS_INCR(val64) | 1;

    val64 = (u64) phase * 0x10000ULL + (360000 / 2);
    do_div(val64, 360000);
    val |= ADI_DDS_INIT(val64);

    dac_write(ADI_REG_CHAN_CNTRL_1_IIOCHAN(chan), ADI_DDS_SCALE(scale));
    dac_write(ADI_REG_CHAN_CNTRL_2_IIOCHAN(chan), val);

    return 0;
}