/*------------------------------------------------------------------------------
--  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