2 * Author: Thomas Ingleby <thomas.c.ingleby@intel.com>
3 * Copyright (c) 2014 Intel Corporation.
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29 * This file defines the spi interface for libmaa
43 * A strucutre representing the SPI device
47 int spifd; /**< File descriptor to SPI Device */
51 /** Initialise SPI_context, uses board mapping. Sets the muxes
53 * @return maa_spi_context The returned initialised SPI context
55 maa_spi_context* maa_spi_init();
57 /** Set the SPI device mode. see spidev
59 * @param spi the spi device context
60 * @param mode the mode. See Linux spidev
62 * @return maa_spi_context The returned initialised SPI context
64 maa_result_t maa_spi_mode(maa_spi_context* spi,unsigned short mode);
66 /** Set the SPI device operating clock frequency.
68 * @param spi the spid device clock frequency
69 * @param hz the frequency in hz
71 * @return maa_spi_context The returned initialised SPI context
73 maa_result_t maa_spi_frequency(maa_spi_context* spi, int hz);
75 /** Write to the SPI device.
77 * @param spi the spid device clock frequency
80 * @return data recevied on the miso line.
82 unsigned int maa_spi_write(maa_spi_context* spi, unsigned int data);
84 /** De-inits an maa_spi_context device
86 * @param dev the spi context
88 * @return maa_result_t the maa result.
90 maa_result_t maa_spi_stop(maa_spi_context* spi);