ra8_io_i2c_bus_riic.c

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#include "ra8_io_i2c_bus_riic.h"
 
#include <stdint.h>
 
#include "ra8_attributes.h"
#include "ra8_check.h"
#include "ra8_err.h"
#include "ra8_i2c.h"
#include "ra8_i2c_regs.h"
#include "ra8_io_i2c_bus.h"
#include "ra8_io_i2c_bus_internal.h"

static const char* const s_tag = "ra8_io_i2c_bus_riic";

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t
internal_riic_write(void* ctx, uint8_t addr, const uint8_t* data, uint32_t len, bool send_stop)
{
  return ra8_i2c_write((uint8_t)(uintptr_t)ctx, addr, data, len, send_stop);
}

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t
internal_riic_read(void* ctx, uint8_t addr, uint8_t* data, uint32_t len)
{
  return ra8_i2c_read((uint8_t)(uintptr_t)ctx, addr, data, len);
}

RA8_INTERNAL
RA8_INTERNAL static ra8_err_t internal_riic_transfer(void*          ctx,
                                                     uint8_t        addr,
                                                     const uint8_t* wr,
                                                     uint32_t       wr_len,
                                                     uint8_t*       rd,
                                                     uint32_t       rd_len)
{
  return ra8_i2c_transfer((uint8_t)(uintptr_t)ctx, addr, wr, wr_len, rd, rd_len);
}

static const ra8_io_i2c_bus_iface_t s_riic_iface = {
  .write    = internal_riic_write,
  .read     = internal_riic_read,
  .transfer = internal_riic_transfer,
};
 
ra8_err_t ra8_io_i2c_bus_bind_riic(ra8_io_i2c_bus_t* bus, uint8_t channel)
{
  RA8_CHECK_NULL_PTR(bus, s_tag, "bus must not be nullptr");
  if (channel >= (uint8_t)k_ra8_i2c_channel_count) {
    return k_ra8_err_invalid_arg;
  }
  bus->iface = &s_riic_iface;
  bus->ctx   = (void*)(uintptr_t)channel;
  return k_ra8_ok;
}