#include "ad5303.h"

void ad5303_init(ad5303_handle_t *hdac, SPI_HandleTypeDef *hspi, cs_handle_t *hcs, ad5303_res_t res)
{
    hdac->hspi = hspi;
    hdac->hcs = hcs;
    hdac->res = res;

    ad5303_gain(hdac, AD_GAIN_X1);
    ad5303_mode(hdac, AD_NORAMAL);
    ad5303_set_value(hdac, 0, AD_DAC1);
    ad5303_set_value(hdac, 0, AD_DAC2);
}

void ad5303_set_value(ad5303_handle_t *hdac, uint16_t value, ad5303_dac_t dac)
{
    uint16_t data;
    uint8_t data8;
    switch (dac)
    {
    case AD_DAC1:
        hdac->_regCtl &= ~(1 << 15);
        break;
    case AD_DAC2:
        hdac->_regCtl |= (1 << 15);
        break;

    default:
        break;
    }

    data = hdac->_regCtl | (value << hdac->res);

    hdac->hcs->cs_on(hdac->hcs);

    data8 = (uint8_t)((data >> 8) & 0x00FF);
    HAL_SPI_Transmit(hdac->hspi, &data8, 1, HAL_MAX_DELAY);
    data8 = (uint8_t)(data & 0x00FF);
    HAL_SPI_Transmit(hdac->hspi, &data8, 1, HAL_MAX_DELAY);

    hdac->hcs->cs_off(hdac->hcs);
}

void ad5303_mode(ad5303_handle_t *hdac, ad5303_mode_t mode)
{
    switch (mode)
    {
    case AD_NORAMAL:
        hdac->_regCtl &= ~(11 << 12);
        break;
    case AD_LOWZ:
        hdac->_regCtl |= (1 << 12);
        hdac->_regCtl &= ~(1 << 13);
        break;
    case AD_HIGHZ:
        hdac->_regCtl &= ~(1 << 12);
        hdac->_regCtl |= (1 << 13);
        break;
    case AD_OFF:
        hdac->_regCtl |= (11 << 12);
        break;

    default:
        break;
    }
}

void ad5303_gain(ad5303_handle_t *hdac, ad5303_gain_t gain)
{
    switch (gain)
    {
    case AD_GAIN_X1:
        hdac->_regCtl &= ~(1 << 14);
        break;
    case AD_GAIN_X2:
        hdac->_regCtl |= (1 << 14);
        break;
    default:
        break;
    }
}