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29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
33 * \brief Generic Serial-in, Parallel-out implementation (SIPO).
37 * \author Andrea Grandi <andrea@develer.com>
38 * \author Daniele Basile <asterix@develer.com>
40 * $WIZ$ module_name = "sipo"
41 * $WIZ$ module_depends = "kfile"
42 * $WIZ$ module_hw = "bertos/hw/hw_sipo.h"
52 #include "hw/hw_sipo.h"
56 #define SIPO_DATAORDER_START_LSB 1
57 #define SIPO_DATAORDER_START_MSB 0x80
60 * Define enum to set sipo data order.
62 typedef enum SipoBitOrder
64 SIPO_DATAORDER_MSB = 0,
65 SIPO_DATAORDER_LSB = 1
69 * Define enum to set the start level of clock.
71 typedef enum SipoClockPol
79 * Define enum to set load signal level.
81 typedef enum SipoLoadPol
89 * Sipo KFile context structure.
93 KFile fd; ///< File descriptor.
94 SipoMap load_device; ///< Descriptor of the device that we want drive.
95 SipoLoadPol load_pol; ///< Set polarity of load signal.
96 SipoClkPol clock_pol; ///< Set polarity of data clock.
97 SipoBitOrder bit_order; ///< Set the order of pushed bits in sipo.
104 #define KFT_SIPO MAKE_ID('S', 'I', 'P', 'O')
107 * Convert + ASSERT from generic KFile to Sipo.
109 INLINE Sipo * SIPO_CAST(KFile *fd)
111 ASSERT(fd->_type == KFT_SIPO);
115 void sipo_init(Sipo *fd);