ra8-firmware/ra8__io__i2c__bus__internal_8h_source.html

#pragma once


#ifdef __cplusplus

extern "C" {

#endif


#include <stdint.h>


#include "ra8_err.h"

#include "ra8_io_i2c_bus.h"


struct ra8_io_i2c_bus_iface {

  ra8_err_t (*write)(void* ctx, uint8_t addr, const uint8_t* data, uint32_t len, bool send_stop);


  ra8_err_t (*read)(void* ctx, uint8_t addr, uint8_t* data, uint32_t len);


  ra8_err_t (*transfer)(void*          ctx,

                        uint8_t        addr,

                        const uint8_t* wr,

                        uint32_t       wr_len,

                        uint8_t*       rd,

                        uint32_t       rd_len);

};


#ifdef __cplusplus

}

#endif

write
-proof

ra8_err.h
Error Code Definitions for ra8-firmware.

ra8_err_t
ra8_err_codes_t ra8_err_t
Canonical error-return type used by every ra8-firmware API.
Definition ra8_err.h:546

ra8_io_i2c_bus.h
ra8_io I2C-bus facade – one controller-transfer vtable over thechip's two I2C implementations.

ra8_io_i2c_bus_iface
Opaque to applications – backends implement this internally and export a binding helper through their...
Definition ra8_io_i2c_bus_internal.h:49

ra8_io_i2c_bus_iface::read
ra8_err_t(* read)(void *ctx, uint8_t addr, uint8_t *data, uint32_t len)
Controller read; always ends with STOP.
Definition ra8_io_i2c_bus_internal.h:54

ra8_io_i2c_bus_iface::transfer
ra8_err_t(* transfer)(void *ctx, uint8_t addr, const uint8_t *wr, uint32_t wr_len, uint8_t *rd, uint32_t rd_len)
Write-then-RESTART-then-read combined transaction.
Definition ra8_io_i2c_bus_internal.h:57