stm32_mcp4552.c

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/**
 * \file heivs/stm32_mcp4552.c
 *
 * \author marc dot pignat at hevs dot ch
 */

#include "heivs/stm32_mcp4552.h"

status_e mcp4552_set(const struct mcp4552_t *dev, uint32_t value)
{
    status_e status;

    const uint8_t cmd[] =
    {
        /* The write command */
        0x00 | ((value >> 8) & 0x3),
        value & 0xff,
    };

    status = bus_init(dev->bus);
    if (status != NO_ERROR)
    {
        return status;
    }

    status = bus_get(dev->bus);
    if (status != NO_ERROR)
    {
        return status;
    }

    status = bus_write(dev->bus, dev->i2c_address, cmd, ARRAY_SIZE(cmd));
    if (status != NO_ERROR)
    {
        return status;
    }

    status = bus_release(dev->bus);
    if (status != NO_ERROR)
    {
        return status;
    }

    return status;
}