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29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
33 * \brief Generic Serial-in, Parallel-out implementation (SIPO).
38 * \author Andrea Grandi <andrea@develer.com>
39 * \author Daniele Basile <asterix@develer.com>
41 * $WIZ$ module_name = "sipo"
42 * $WIZ$ module_depends = "kfile"
43 * $WIZ$ module_hw = "bertos/hw/hw_sipo.h"
53 #include "hw/hw_sipo.h"
55 #include <kern/kfile.h>
57 #define SIPO_DATAORDER_START_LSB 1
58 #define SIPO_DATAORDER_START_MSB 0x80
61 * Define enum to set sipo data order.
63 typedef enum SipoBitOrder
65 SIPO_DATAORDER_MSB = 0,
66 SIPO_DATAORDER_LSB = 1
70 * Define enum to set the start level of clock.
72 typedef enum SipoClockPol
80 * Define enum to set load signal level.
82 typedef enum SipoLoadPol
90 * Map sipo connection on board.
98 * Sipo KFile context structure.
102 KFile fd; ///< File descriptor.
103 SipoMap load_device; ///< Descriptor of the device that we want drive.
104 SipoLoadPol load_pol; ///< Set polarity of load signal.
105 SipoClkPol clock_pol; ///< Set polarity of data clock.
106 SipoBitOrder bit_order; ///< Set the order of pushed bits in sipo.
113 #define KFT_SIPO MAKE_ID('S', 'I', 'P', 'O')
116 * Convert + ASSERT from generic KFile to Sipo.
118 INLINE Sipo * SIPO_CAST(KFile *fd)
120 ASSERT(fd->_type == KFT_SIPO);
124 void sipo_init(Sipo *fd);