deviceio.h

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#pragma once
#include <stddef.h>
#include <stdint.h>

#ifndef HW_DEVICEIO_CAPACITY
#define HW_DEVICEIO_CAPACITY 8
#endif

#ifndef HW_DEVICEIO_CONTEXT_SIZE
#define HW_DEVICEIO_CONTEXT_SIZE 32
#endif

// TYPES

typedef struct hw_deviceio_t hw_deviceio_t;

typedef enum {
  hw_deviceio_i2c,
  hw_deviceio_spi,
} hw_deviceio_bus_t;

// LIFECYCLE

void hw_deviceio_deinit(hw_deviceio_t *device);

// PROPERTIES

hw_deviceio_bus_t hw_deviceio_bus(const hw_deviceio_t *device);

// METHODS

size_t hw_deviceio_xfr(hw_deviceio_t *device, void *data, size_t tx, size_t rx,
                       uint32_t timeout_ms);

size_t hw_deviceio_read_reg(hw_deviceio_t *device, uint8_t reg, void *data,
                            size_t len, uint32_t timeout_ms);

size_t hw_deviceio_write_reg(hw_deviceio_t *device, uint8_t reg,
                             const void *data, size_t len, uint32_t timeout_ms);