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spi.h
148 lines | 3.5 KiB | text/x-c | CLexer
/*------------------------------------------------------------------------------
-- This file is a part of the libuc, microcontroler library
-- Copyright (C) 2012, Alexis Jeandet
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 3 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-------------------------------------------------------------------------------
-- Author : Alexis Jeandet
-- Mail : alexis.jeandet@gmail.com
-------------------------------------------------------------------------------*/
/*
TODO:
Add SPI slave mode
Add interrupt interface
*/
#ifndef SPI_H
#define SPI_H
#include <stdint.h>
#include <uhandle.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
typedef struct spi_t
{
void* _dev;
int cfg;
int speed;
}spi_t;*/
typedef int spi_t;
#define spi1 0
#define spi2 1
#define spi3 2
#define spi4 3
#define spi5 4
#define spi6 5
#define spi7 6
#define spi8 7
#define spi9 8
typedef enum
{
spi4bits = 0x3,
spi5bits = 0x4,
spi6bits = 0x5,
spi7bits = 0x6,
spi8bits = 0x7,
spi9bits = 0x8,
spi10bits = 0x9,
spi11bits = 0xA,
spi12bits = 0xB,
spi13bits = 0xC,
spi14bits = 0xD,
spi15bits = 0xE,
spi16bits = 0xF
}spibits_t;
#define SPIBITSMASK 0xF
typedef enum
{
spislave = 0x00,
spimaster = 0x10
}spimode_t;
#define SPIMODEMASK 0x10
typedef enum
{
spiclkinhlow = 0x00,
spiclkinhhigh = 0x20
}spiclkinhlvl_t;
#define SPICLKINHLVLMASK 0x20
typedef enum
{
spiclkfirstedge = 0x00,
spiclksecondedge = 0x40
}spiclkphase_t;
#define SPICLKPHASEMASK 0x40
typedef enum
{
spimsbfirst = 0x00,
spilsbfirst = 0x80
}spibitorder_t;
#define SPIBITORDERMASK 0x80
extern spi_t spiopen(int count);
extern spi_t spiopenandconfig(int count,uint32_t cfg,uint32_t speed,uint32_t MOSIpin,uint32_t MISOpin,uint32_t SCKpin,uint32_t SCSpin);
extern int spiclose(spi_t spidev);
extern int spisetpins(spi_t spidev,uint32_t MOSIpin,uint32_t MISOpin,uint32_t SCKpin,uint32_t SCSpin);
extern int spienable(spi_t spidev);
extern int spidisable(spi_t spidev);
extern int spisetconfig(spi_t spidev,uint32_t config,uint32_t speed);
extern int spisetspeed(spi_t spidev, uint32_t speed);
extern int spisetbitorder(spi_t spidev,spibitorder_t order);
extern int spisetdatabits(spi_t spidev,spibits_t bitscnt);
extern int spisetclkinhlevel(spi_t spidev,spiclkinhlvl_t level);
extern int spisetclkphase(spi_t spidev,spiclkphase_t phase);
extern int spiputw(spi_t spidev,uint16_t data);
extern uint16_t spigetw(spi_t spidev);
extern int spiputs(spi_t spidev,char* s);
extern int spigets(spi_t spidev,char* s);
extern int spiputnw(spi_t spidev,uint16_t* w,int n);
extern int spigetnw(spi_t spidev,uint16_t* w,int n);
extern int spiputnc(spi_t spidev,char* c,int n);
extern int spigetnc(spi_t spidev,char* c,int n);
extern int spiavailiabledata(spi_t spidev);
#ifdef __cplusplus
}
#endif
#endif //SPI_H