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added support for pic32 (PIC32MX795F512L)

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Giovanni `evilaliv3` Pellerano 2012-12-17 09:14:23 +01:00
parent 70e46f3248
commit f68df3a81c
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cpu/pic32/lib/pic32_spi.h Normal file
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/*
* Contiki PIC32 Port project
*
* Copyright (c) 2012,
* Scuola Superiore Sant'Anna (http://www.sssup.it) and
* Consorzio Nazionale Interuniversitario per le Telecomunicazioni
* (http://www.cnit.it).
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
/**
* \addtogroup pic32 PIC32 Contiki Port
*
* @{
*/
/**
* \file pic32_spi.h
* \brief SPI interface for PIC32MX (pic32mx795f512l)
* \author Giovanni Pellerano <giovanni.pellerano@evilaliv3.org>
* \date 2012-03-21
*/
/*
* PIC32MX795F512L - Specific Functions
*
* All the functions in this part of the file are specific for the
* pic32mx795f512l that is characterized by registers' name that differ from
* the 3xx and 4xx families of the pic32mx.
*/
#ifndef __INCLUDE_PIC32_SPI_H__
#define __INCLUDE_PIC32_SPI_H__
#ifdef __USE_SPI__
#include <p32xxxx.h>
#include <stdint.h>
/* Returned Messages */
#define SPI_NO_ERRORS 0
#define SPI_ERR_BAD_PORT 1
#define SPI_ERR_BAD_ARGS 2
#define SPI_ERR_BUSY 3
#define SPI_ERR_UNIMPLEMENTED 10
/*
* Configuration Flags
* NOTE: this work under the assumption that all the SPI ports have the same
* control register specification. See pic32mx family reference manual.
*/
#define SPI_MASTER 0b00000000000000000000000000100000
#define SPI_CLOCK_IDLE_HIGH 0b00000000000000000000000001000000
#define SPI_SDO_ON_CLOCK_TO_IDLE 0b00000000000000000000000100000000
#define SPI_SDI_ON_CLOCK_END 0b00000000000000000000001000000000
/* Other Flags */
#define SPI_DEFAULT (SPI_MASTER | SPI_SDO_ON_CLOCK_TO_IDLE)
#define SPI_DEF(XX) \
int8_t pic32_spi##XX##_init(uint32_t baudrate, uint32_t flags); \
int8_t pic32_spi##XX##_close(); \
int8_t pic32_spi##XX##_write(const uint8_t *data, uint32_t len);\
int8_t pic32_spi##XX##_read(uint8_t *data, uint32_t len);
#ifdef __USE_SPI_PORT1__
SPI_DEF(1)
#endif /* __USE_SPI_PORT1__ */
#ifdef __USE_SPI_PORT1A__
SPI_DEF(1A)
#endif /* __USE_SPI_PORT1A__ */
#ifdef __USE_SPI_PORT2A__
SPI_DEF(2A)
#endif /* __USE_SPI_PORT2A__ */
#ifdef __USE_SPI_PORT3A__
SPI_DEF(3A)
#endif /* __USE_SPI_PORT3A__ */
#endif /* __USE_SPI__ */
#endif /* __INCLUDE_PIC32_SPI_H__ */
/** @} */