mirror of
https://github.com/marqs85/ossc
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118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/*
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* spi_io.h
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* Author: Nelson Lombardo (C) 2015
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* e-mail: nelson.lombardo@gmail.com
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* License at the end of file.
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*/
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#ifndef _SPI_IO_H_
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#define _SPI_IO_H_
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#include "sysconfig.h"
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#include "integer.h" /* Type redefinition for portability */
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/******************************************************************************
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Public methods
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*****************************************************************************/
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/**
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\brief Initialize SPI hardware
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*/
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void SPI_Init (void);
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/**
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\brief Read sequence of bytes
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\param *rd Pointer to array where read bytes are written.
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\param len Length of the array.
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*/
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void SPI_R (BYTE *rd, int len);
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/**
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\brief Write sequence of bytes
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\param *wd Pointer to array which holds the bytes.
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\param len Length of the array.
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*/
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void SPI_W (const BYTE *wd, int len);
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/**
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\brief Read a single byte.
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\param d Byte. Ignored.
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\return Byte that arrived.
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*/
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BYTE SPI_RW (BYTE d);
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/**
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\brief Write a single byte.
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\param d Byte to write.
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*/
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void SPI_WW(BYTE d);
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/**
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\brief Flush of SPI buffer.
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*/
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void SPI_Release (void);
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/**
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\brief Selecting function in SPI terms, associated with SPI module.
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*/
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void SPI_CS_Low (void);
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/**
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\brief Deselecting function in SPI terms, associated with SPI module.
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*/
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void SPI_CS_High (void);
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/**
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\brief Setting frequency of SPI's clock to maximun possible.
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*/
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void SPI_Freq_High (void);
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/**
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\brief Setting frequency of SPI's clock equal or lower than 400kHz.
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*/
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void SPI_Freq_Low (void);
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/**
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\brief Start a non-blocking timer.
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\param ms Milliseconds.
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*/
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int SPI_Timer_On (WORD ms);
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/**
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\brief Check the status of non-blocking timer.
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\return Status, TRUE if timeout is not reach yet.
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*/
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BOOL SPI_Timer_Status (void);
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/**
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\brief Stop of non-blocking timer. Mandatory.
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*/
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void SPI_Timer_Off (void);
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#endif
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/*
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The MIT License (MIT)
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Copyright (c) 2015 Nelson Lombardo
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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