tlv5618.c

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#include "tlv5618.h"
#include "hw/hw_tlv5618.h"

#include <io/kfile.h>

#include <string.h> //memset


static void tlv5618_write(Tlv5618 *ctx, uint16_t val)
{
    TLV5618_CSLOW(ctx->cs_pin);
    kfile_putc(val >> 8, ctx->ch);
    kfile_putc(val & 0xFF, ctx->ch);
    kfile_flush(ctx->ch);
    TLV5618_CSHIGH(ctx->cs_pin);
}

#define POWERDOWN 0x2000
#define OUTA 0xC000
#define OUTB 0x4000

void tlv5618_setOutA(Tlv5618 *ctx, uint16_t val)
{
    val &= 0x0FFF;
    tlv5618_write(ctx, val | OUTA);
}

void tlv5618_setOutB(Tlv5618 *ctx, uint16_t val)
{
    val &= 0x0FFF;
    tlv5618_write(ctx, val | OUTB);
}

void tlv5618_setPowerDown(Tlv5618 *ctx)
{
    tlv5618_write(ctx, POWERDOWN);
}


void tlv5618_init(Tlv5618 *ctx, KFile *ch, int cs_pin)
{
    memset(ctx, 0, sizeof(*ctx));
    ctx->cs_pin = cs_pin;
    ctx->ch = ch;
    TLV5618_CSINIT(cs_pin);
    tlv5618_setPowerDown(ctx);
}