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131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/**
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******************************************************************************
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* @file MicoDriverSpi.h
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* @author William Xu
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* @version V1.0.0
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* @date 16-Sep-2014
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* @brief This file provides all the headers of SPi operation functions.
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******************************************************************************
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*
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* The MIT License
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* Copyright (c) 2014 MXCHIP Inc.
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*
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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 furnished
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* to do so, subject to the following conditions:
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*
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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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*
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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 LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
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* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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******************************************************************************
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*/
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#ifndef __MICODRIVERSPI_H__
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#define __MICODRIVERSPI_H__
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#pragma once
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#include "common.h"
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#include "platform.h"
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#include "platform_peripheral.h"
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/** @addtogroup MICO_PLATFORM
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* @{
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*/
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/** @defgroup MICO_SPI MICO SPI Driver
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* @brief Serial Peripheral Interface (SPI) Functions
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* @{
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*/
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/******************************************************
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* Constants
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******************************************************/
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/* SPI mode constants */
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#define SPI_CLOCK_RISING_EDGE ( 1 << 0 )
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#define SPI_CLOCK_FALLING_EDGE ( 0 << 0 )
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#define SPI_CLOCK_IDLE_HIGH ( 1 << 1 )
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#define SPI_CLOCK_IDLE_LOW ( 0 << 1 )
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#define SPI_USE_DMA ( 1 << 2 )
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#define SPI_NO_DMA ( 0 << 2 )
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#define SPI_MSB_FIRST ( 1 << 3 )
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#define SPI_LSB_FIRST ( 0 << 3 )
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/******************************************************
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* Enumerations
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******************************************************/
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/******************************************************
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* Structures
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******************************************************/
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typedef struct
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{
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mico_spi_t port;
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mico_gpio_t chip_select;
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uint32_t speed;
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uint8_t mode;
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uint8_t bits;
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} mico_spi_device_t;
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typedef platform_spi_message_segment_t mico_spi_message_segment_t;
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/******************************************************
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* Variables
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******************************************************/
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/******************************************************
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* Function Declarations
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******************************************************/
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/**@brief Initialises the SPI interface for a given SPI device
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*
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* @note Prepares a SPI hardware interface for communication as a master
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*
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* @param spi : the SPI device to be initialised
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*
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* @return kNoErr : on success.
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* @return kGeneralErr : if the SPI device could not be initialised
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*/
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OSStatus MicoSpiInitialize( const mico_spi_device_t* spi );
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/**@brief Transmits and/or receives data from a SPI device
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*
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* @param spi : the SPI device to be initialised
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* @param segments : a pointer to an array of segments
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* @param number_of_segments : the number of segments to transfer
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*
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* @return kNoErr : on success.
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* @return kGeneralErr : if an error occurred
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*/
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OSStatus MicoSpiTransfer( const mico_spi_device_t* spi, const mico_spi_message_segment_t* segments, uint16_t number_of_segments );
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/**@brief De-initialises a SPI interface
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*
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* @note Turns off a SPI hardware interface
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*
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* @param spi : the SPI device to be de-initialised
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*
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* @return kNoErr : on success.
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* @return kGeneralErr : if an error occurred
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*/
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OSStatus MicoSpiFinalize( const mico_spi_device_t* spi );
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/** @} */
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/** @} */
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#endif
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