/**
 * @file laser_dac.c
 * @brief External DAC access for laser-current and TEC channels.
 */

#include "laser_dac.h"

#include "board_io.h"
#include "main.h"

void laser_dac_write_channel(uint8_t channel, uint16_t value)
{
    uint32_t timeout;

    if ((channel == 1u) || (channel == 3u))
    {
        board_io_configure_spi2_mode(LL_SPI_POLARITY_HIGH, LL_SPI_PHASE_2EDGE);
        HAL_GPIO_WritePin(AD9102_CS_GPIO_Port, AD9102_CS_Pin, GPIO_PIN_SET);
    }

    switch (channel)
    {
        case 1u:
            HAL_GPIO_WritePin(DAC_LD1_CS_GPIO_Port, DAC_LD1_CS_Pin, GPIO_PIN_RESET);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_TXE(SPI2)) && (timeout <= 500u))
            {
                ++timeout;
            }
            LL_SPI_TransmitData16(SPI2, value);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_RXNE(SPI2)) && (timeout <= 500u))
            {
                ++timeout;
            }
            (void)SPI2->DR;
            break;

        case 2u:
            if (!LL_SPI_IsEnabled(SPI6))
            {
                LL_SPI_Enable(SPI6);
            }
            HAL_GPIO_WritePin(DAC_LD2_CS_GPIO_Port, DAC_LD2_CS_Pin, GPIO_PIN_RESET);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_TXE(SPI6)) && (timeout <= 500u))
            {
                ++timeout;
            }
            LL_SPI_TransmitData16(SPI6, value);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_RXNE(SPI6)) && (timeout <= 500u))
            {
                ++timeout;
            }
            (void)SPI6->DR;
            break;

        case 3u:
            HAL_GPIO_WritePin(DAC_TEC1_CS_GPIO_Port, DAC_TEC1_CS_Pin, GPIO_PIN_RESET);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_TXE(SPI2)) && (timeout <= 500u))
            {
                ++timeout;
            }
            LL_SPI_TransmitData16(SPI2, value);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_RXNE(SPI2)) && (timeout <= 500u))
            {
                ++timeout;
            }
            (void)SPI2->DR;
            break;

        case 4u:
            if (!LL_SPI_IsEnabled(SPI6))
            {
                LL_SPI_Enable(SPI6);
            }
            HAL_GPIO_WritePin(DAC_TEC2_CS_GPIO_Port, DAC_TEC2_CS_Pin, GPIO_PIN_RESET);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_TXE(SPI6)) && (timeout <= 500u))
            {
                ++timeout;
            }
            LL_SPI_TransmitData16(SPI6, value);
            timeout = 0u;
            while ((!LL_SPI_IsActiveFlag_RXNE(SPI6)) && (timeout <= 500u))
            {
                ++timeout;
            }
            (void)SPI6->DR;
            break;

        default:
            break;
    }

    HAL_GPIO_WritePin(DAC_LD1_CS_GPIO_Port, DAC_LD1_CS_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(DAC_LD2_CS_GPIO_Port, DAC_LD2_CS_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(DAC_TEC1_CS_GPIO_Port, DAC_TEC1_CS_Pin, GPIO_PIN_SET);
    HAL_GPIO_WritePin(DAC_TEC2_CS_GPIO_Port, DAC_TEC2_CS_Pin, GPIO_PIN_SET);
}