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/*
* Copyright (C) 2015 PHYTEC Messtechnik GmbH
*
* This file is subject to the terms and conditions of the GNU Lesser General
* Public License v2.1. See the file LICENSE in the top level directory for more
* details.
*/
/**
* @ingroup drivers_kw2xrf
* @{
* @file
* @brief Definition of KW2XRF SPI functions
*
* @author Johann Fischer <j.fischer@phytec.de>
*/
#ifndef KW2XRF_SPI_H
#define KW2XRF_SPI_H
#include <stdio.h>
#include "board.h"
#include "cpu.h"
#include "periph/spi.h"
#include "periph_conf.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief SPI interface initialization
* @param[in] spi SPI bus the device is connected to
* @param[in] spi_speed SPI speed to use
* @param[in] cs_pin GPIO pin connected to chip select
*
* @return 0 on success
* @return -1 on error
*/
int kw2xrf_spi_init(spi_t spi, spi_speed_t spi_speed,
gpio_t cs_pin);
/**
* @brief Writes a byte to the kw2xrf register.
*
* @param[in] addr Address of the register to write.
* @param[in] value The value to write in the register.
*/
void kw2xrf_write_dreg(uint8_t addr, uint8_t value);
/**
* @brief Reads a byte from the kw2xrf register.
*
* @param[in] addr Address of the register to read.
* @return Value of the register.
*/
uint8_t kw2xrf_read_dreg(uint8_t addr);
/**
* @brief Writes to a byte from the kw2xrf indirect register.
*
* @param[in] addr Address of the register to write into.
* @param[in] value Value that shall be written.
*/
void kw2xrf_write_ireg(uint8_t addr, uint8_t value);
/**
* @brief Reads a byte from the kw2xrf indirect register.
*
* @param[in] addr Address of the register to read.
*
* @return value in the register
*/
uint8_t kw2xrf_read_ireg(uint8_t addr);
/**
* @brief Writes to kw2xrf indirect registers.
*
* @param[in] addr Address of the register to write into.
* @param[in] buf Value that shall be written.
* @param[in] length Length of the register.
*/
void kw2xrf_write_iregs(uint8_t addr, uint8_t *buf, uint8_t length);
/**
* @brief Reads a byte from the kw2xrf indirect register.
*
* @param[in] addr Address of the register to read.
* @param[in] buf Buffer, where the content of the reg shall be written to.
* @param[in] length Length of the register.
*/
void kw2xrf_read_iregs(uint8_t addr, uint8_t *buf, uint8_t length);
/**
* @brief Writes multiple bytes to the kw2xrf fifo.
*
* @param[in] data A buffer with the value to write to the fifo.
* @param[in] data_length The count of bytes which should be written.
*
* @return number of bytes written.
*/
void kw2xrf_write_fifo(uint8_t *data, uint8_t data_length);
/**
* @brief Reads multiple bytes from the kw2xrf fifo.
*
* @param[out] data A buffer to store the value of the fifo.
* @param[in] data_length The count of bytes which should be read.
*
* @return number of bytes read.
*/
void kw2xrf_read_fifo(uint8_t *data, uint8_t data_length);
#ifdef __cplusplus
}
#endif
#endif
/** @} */
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