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/*------------------------------------------------------------------------------
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-- This file is a part of the libuc, microcontroler library
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-- Copyright (C) 2012, Alexis Jeandet
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--
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-- This program is free software; you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation; either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program; if not, write to the Free Software
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-- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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-------------------------------------------------------------------------------
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-- Author : Alexis Jeandet
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-- Mail : alexis.jeandet@member.fsf.org
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-------------------------------------------------------------------------------*/
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/*
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TODO:
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Add SPI slave mode
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Add interrupt interface
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*/
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#ifndef SPI_H
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#define SPI_H
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#include <uhandle.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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typedef struct spi_t
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{
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void* _dev;
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int cfg;
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int speed;
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}spi_t;*/
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typedef int spi_t;
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#define spi1 ((spi_t)0)
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#define spi2 ((spi_t)1)
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#define spi3 ((spi_t)2)
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#define spi4 ((spi_t)3)
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#define spi5 ((spi_t)4)
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#define spi6 ((spi_t)5)
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#define spi7 ((spi_t)6)
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#define spi8 ((spi_t)7)
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#define spi9 ((spi_t)8)
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typedef enum
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{
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spi4bits = 0x3,
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spi5bits = 0x4,
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spi6bits = 0x5,
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spi7bits = 0x6,
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spi8bits = 0x7,
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spi9bits = 0x8,
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spi10bits = 0x9,
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spi11bits = 0xA,
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spi12bits = 0xB,
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spi13bits = 0xC,
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spi14bits = 0xD,
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spi15bits = 0xE,
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spi16bits = 0xF
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}spibits_t;
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#define SPIBITSMASK 0xF
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typedef enum
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{
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spislave = 0x00,
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spimaster = 0x10
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}spimode_t;
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#define SPIMODEMASK 0x10
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typedef enum
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{
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spiclkinhlow = 0x00,
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spiclkinhhigh = 0x20
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}spiclkinhlvl_t;
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#define SPICLKINHLVLMASK 0x20
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typedef enum
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{
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spiclkfirstedge = 0x00,
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spiclksecondedge = 0x40
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}spiclkphase_t;
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#define SPICLKPHASEMASK 0x40
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typedef enum
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{
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spimsbfirst = 0x00,
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spilsbfirst = 0x80
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}spibitorder_t;
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#define SPIBITORDERMASK 0x80
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extern spi_t spiopen(int count);
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extern spi_t spiopenandconfig(int count,uint32_t cfg,uint32_t speed,uint32_t MOSIpin,uint32_t MISOpin,uint32_t SCKpin,uint32_t SCSpin);
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extern int spiclose(spi_t spidev);
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extern int spisetpins(spi_t spidev,uint32_t MOSIpin,uint32_t MISOpin,uint32_t SCKpin,uint32_t SCSpin);
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extern int spienable(spi_t spidev);
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extern int spidisable(spi_t spidev);
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extern int spitransactionfinished(spi_t spidev);
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extern int spisetconfig(spi_t spidev,uint32_t config,uint32_t speed);
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extern int spisetspeed(spi_t spidev, uint32_t speed);
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extern uint32_t spigetspeed(spi_t spidev);
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extern int spisetbitorder(spi_t spidev,spibitorder_t order);
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extern int spisetdatabits(spi_t spidev,spibits_t bitscnt);
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extern int spisetclkinhlevel(spi_t spidev,spiclkinhlvl_t level);
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extern int spisetclkphase(spi_t spidev,spiclkphase_t phase);
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extern int spiputw(spi_t spidev,uint16_t data);
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extern uint16_t spigetw(spi_t spidev);
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extern uint16_t spigetw2(spi_t spidev,uint16_t data);
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extern int spiputs(spi_t spidev,char* s);
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extern int spigets(spi_t spidev,char* s);
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extern int spiputnw(spi_t spidev,uint16_t* w,int n);
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extern int spigetnw(spi_t spidev,uint16_t* w,int n);
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extern int spiputnc(spi_t spidev,char* c,int n);
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extern int spigetnc(spi_t spidev,char* c,int n);
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extern int spiavailiabledata(spi_t spidev);
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#ifdef __cplusplus
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}
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#endif
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#endif //SPI_H
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