Routines for 7 segment display. More...

#include <cfg/os.h>
#include <cfg/arch.h>
#include <compiler.h>
#include <string.h>
#include <stdlib.h>
#include <sys/nutdebug.h>
#include <sys/timer.h>
#include <stdio.h>
#include <cfg/memory.h>
#include <dev/blockdev.h>
#include <cfg/spi_7seg.h>
#include <dev/spi_7seg.h>
#include <cfg/arch/gpio.h>
#include <dev/spibus_at91.h>

Include dependency graph for spi_7seg.c:

Go to the source code of this file.

Data Structures
struct	DCB_7SEG
	Device Control Block for 7-Segment Display. More...
Defines
#define	NPRINTF(args,...)
#define	SEG7_DIGITS 4
#define	SEG7_REVERSE
#define	SEGR_NOOP 0x00
#define	SEGR_DIG0 0x01
#define	SEGR_DIG1 0x02
#define	SEGR_DIG2 0x03
#define	SEGR_DIG3 0x04
#define	SEGR_DIG4 0x05
#define	SEGR_DIG5 0x06
#define	SEGR_DIG6 0x07
#define	SEGR_DIG7 0x08
#define	SEGR_DEC_MODE 0x09
#define	SEGR_INTENSITY 0x0a
#define	SEGR_SCAN_LIM 0x0b
#define	SEGR_SHUTDOWN 0x0c
#define	SEGR_FEATURE 0x0e
#define	SEGR_DSP_TEST 0x0f
#define	SHUTDOWN_RESET 0x00
#define	SHUTDOWN_SOFT 0x80
#define	NORM_OP_RESET 0x01
#define	NORM_OP_SOFT 0x81
#define	NO_DIG_DECODE 0x00
#define	DIG_0_DECODE 0x01
#define	DIG_0_3_DECODE 0x0f
#define	DIG_0_7_DECODE 0xff
#define	SEGF_EXTCLK 0x01
#define	SEGF_REGRES 0x02
#define	SEGF_DECSEL 0x04
#define	SEGF_SPIEN 0x08
#define	SEGF_BLINK 0x10
#define	SEGF_BLSLOW 0x20
#define	SEGF_BLSYNC 0x40
#define	SEGF_BLSTART 0x80
#define	SEGF_BLMASK (SEGF_BLINK\|SEGF_BLSLOW)
#define	TEST_MODE_OFF 0x00
#define	TEST_MODE_ON 0x01
#define	DISPLAY_LIMIT 2
#define	SPI_RATE_DISP_7SEG 400000
#define	SPI_MODE_DISP_7SEG SPI_MODE_3
#define	ICMD_UPDATE 0x01
#define	ICMD_INTENS 0x02
#define	ICMD_ESCAPE 0x80
Functions
void	Spi7SegPush (NUTDEVICE *dev)
	Push display buffer to display.
int	Spi7segPutc (NUTDEVICE *dev, char c)
	Send single character to 7-Segment Display.
int	Spi7segWrite (NUTFILE fp, CONST void buffer, int len)
	Send characters to 7-Segment Display.
void	Spi7segDot (NUTDEVICE *dev, uint8_t pos, uint8_t act)
	File Handle for 7-Sefgment Display.
NUTFILE *	Spi7SegOpen (NUTDEVICE dev, CONST char name, int mode, int acc)
	Generate File Handle for 7-Sefgment Display.
int	Spi7segInit (NUTDEVICE *dev)
	Initialize the 7seg device.
Variables
NUTSPINODE	nodeSpi7SEG
	7seg SPI node implementation structure.
NUTDEVICE	devSpi7SEG
	7seg device implementation structure.

Detailed Description

Routines for 7 segment display.

 * $Id: spi_7seg.c,$
 *

Definition in file spi_7seg.c.

Define Documentation

#define NPRINTF	(	args,
		...
	)

Definition at line 57 of file spi_7seg.c.

Referenced by Spi7segInit(), Spi7SegPush(), and Spi7segPutc().

#define SEG7_DIGITS 4

Definition at line 77 of file spi_7seg.c.

Referenced by Spi7segDot(), Spi7segInit(), Spi7SegPush(), and Spi7segPutc().

#define SEG7_REVERSE

Definition at line 80 of file spi_7seg.c.

#define SEGR_NOOP 0x00

Definition at line 83 of file spi_7seg.c.

#define SEGR_DIG0 0x01

Definition at line 84 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_DIG1 0x02

Definition at line 85 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_DIG2 0x03

Definition at line 86 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_DIG3 0x04

Definition at line 87 of file spi_7seg.c.

#define SEGR_DIG4 0x05

Definition at line 88 of file spi_7seg.c.

#define SEGR_DIG5 0x06

Definition at line 89 of file spi_7seg.c.

#define SEGR_DIG6 0x07

Definition at line 90 of file spi_7seg.c.

#define SEGR_DIG7 0x08

Definition at line 91 of file spi_7seg.c.

#define SEGR_DEC_MODE 0x09

Definition at line 93 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_INTENSITY 0x0a

Definition at line 94 of file spi_7seg.c.

Referenced by Spi7segInit(), and Spi7segPutc().

#define SEGR_SCAN_LIM 0x0b

Definition at line 95 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_SHUTDOWN 0x0c

Definition at line 96 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SEGR_FEATURE 0x0e

Definition at line 97 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define SEGR_DSP_TEST 0x0f

Definition at line 98 of file spi_7seg.c.

Referenced by Spi7segInit().

#define SHUTDOWN_RESET 0x00

Definition at line 101 of file spi_7seg.c.

#define SHUTDOWN_SOFT 0x80

Definition at line 102 of file spi_7seg.c.

#define NORM_OP_RESET 0x01

Definition at line 103 of file spi_7seg.c.

Referenced by Spi7segInit().

#define NORM_OP_SOFT 0x81

Definition at line 104 of file spi_7seg.c.

#define NO_DIG_DECODE 0x00

Definition at line 107 of file spi_7seg.c.

Referenced by Spi7segInit().

#define DIG_0_DECODE 0x01

Definition at line 108 of file spi_7seg.c.

#define DIG_0_3_DECODE 0x0f

Definition at line 109 of file spi_7seg.c.

#define DIG_0_7_DECODE 0xff

Definition at line 110 of file spi_7seg.c.

#define SEGF_EXTCLK 0x01

Definition at line 113 of file spi_7seg.c.

#define SEGF_REGRES 0x02

Definition at line 114 of file spi_7seg.c.

#define SEGF_DECSEL 0x04

Definition at line 115 of file spi_7seg.c.

#define SEGF_SPIEN 0x08

Definition at line 116 of file spi_7seg.c.

#define SEGF_BLINK 0x10

Definition at line 117 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define SEGF_BLSLOW 0x20

Definition at line 118 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define SEGF_BLSYNC 0x40

Definition at line 119 of file spi_7seg.c.

#define SEGF_BLSTART 0x80

Definition at line 120 of file spi_7seg.c.

#define SEGF_BLMASK (SEGF_BLINK|SEGF_BLSLOW)

Definition at line 122 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define TEST_MODE_OFF 0x00

Definition at line 125 of file spi_7seg.c.

Referenced by Spi7segInit().

#define TEST_MODE_ON 0x01

Definition at line 126 of file spi_7seg.c.

#define DISPLAY_LIMIT 2

Definition at line 129 of file spi_7seg.c.

#define SPI_RATE_DISP_7SEG 400000

Definition at line 132 of file spi_7seg.c.

#define SPI_MODE_DISP_7SEG SPI_MODE_3

Definition at line 136 of file spi_7seg.c.

#define ICMD_UPDATE 0x01

Definition at line 140 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define ICMD_INTENS 0x02

Definition at line 141 of file spi_7seg.c.

Referenced by Spi7segPutc().

#define ICMD_ESCAPE 0x80

Definition at line 142 of file spi_7seg.c.

Referenced by Spi7segPutc().

Function Documentation

void Spi7SegPush ( NUTDEVICE * dev )

Push display buffer to display.

Parameters:

dev	Display device.

Definition at line 289 of file spi_7seg.c.

References _NUTDEVICE::dev_dcb, _NUTDEVICE::dev_icb, DCB_7SEG::digit, NPRINTF, NUTASSERT, and SEG7_DIGITS.

Referenced by Spi7segDot(), and Spi7segPutc().

int Spi7segPutc	(	NUTDEVICE *	dev,
		char	c
	)

Send single character to 7-Segment Display.

A newline character will reset write pointer to digit 0. Carriage return is ignored.

Returns:: Number of characters sent.

Definition at line 329 of file spi_7seg.c.

References _NUTDEVICE::dev_dcb, _NUTDEVICE::dev_icb, DCB_7SEG::digit, DCB_7SEG::dip, DCB_7SEG::freg, DCB_7SEG::icmd, ICMD_ESCAPE, ICMD_INTENS, ICMD_UPDATE, memset(), NPRINTF, NUTASSERT, SEG7_DIGITS, SEGF_BLINK, SEGF_BLMASK, SEGF_BLSLOW, SEGR_FEATURE, SEGR_INTENSITY, and Spi7SegPush().

Referenced by Spi7segWrite().

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int Spi7segWrite	(	NUTFILE *	fp,
		CONST void *	buffer,
		int	len
	)

Send characters to 7-Segment Display.

A newline character will reset write pointer to digit 0. Carriage return is ignored.

Returns:: Number of characters sent.

Definition at line 457 of file spi_7seg.c.

References CONST, _NUTFILE::nf_dev, NUTASSERT, and Spi7segPutc().

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void Spi7segDot	(	NUTDEVICE *	dev,
		uint8_t	pos,
		uint8_t	act
	)

File Handle for 7-Sefgment Display.

Parameters:

pos	Selects the digit.
act	Selects the action for the digits decimal dot.

Definition at line 478 of file spi_7seg.c.

References _NUTDEVICE::dev_dcb, DCB_7SEG::digit, DOT_7SEG_CLR, DOT_7SEG_FLIP, DOT_7SEG_SET, NUTASSERT, SEG7_DIGITS, and Spi7SegPush().

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NUTFILE* Spi7SegOpen	(	NUTDEVICE *	dev,
		CONST char *	name,
		int	mode,
		int	acc
	)

Generate File Handle for 7-Sefgment Display.

Parameters:

dev	Specifies the 7seg device.

Returns:: 0 on success or -1 if no valid 7seg was found.

Definition at line 506 of file spi_7seg.c.

References malloc(), _NUTFILE::nf_dev, _NUTFILE::nf_fcb, _NUTFILE::nf_next, NUTASSERT, and NUTFILE_EOF.

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int Spi7segInit ( NUTDEVICE * dev )

Initialize the 7seg device.

This routine determines the 7seg type. It is internally called by Nut/OS during device registration.

The driver framework may call this function more than once.

Parameters:

dev	Specifies the 7seg device.

Returns:: 0 on success or -1 if no valid 7seg was found.

Definition at line 556 of file spi_7seg.c.

References _NUTDEVICE::dev_dcb, _NUTDEVICE::dev_icb, DCB_7SEG::freg, malloc(), memset(), NO_DIG_DECODE, NORM_OP_RESET, NPRINTF, NUTASSERT, SEG7_DIGITS, SEGR_DEC_MODE, SEGR_DIG0, SEGR_DIG1, SEGR_DIG2, SEGR_DSP_TEST, SEGR_INTENSITY, SEGR_SCAN_LIM, SEGR_SHUTDOWN, and TEST_MODE_OFF.

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Variable Documentation

NUTSPINODE nodeSpi7SEG

Initial value:

 {
    NULL,                   
    NULL,                   
    SPI_RATE_DISP_7SEG,     
    SPI_MODE_DISP_7SEG,     
    8,                      
    0                       
}

7seg SPI node implementation structure.

Definition at line 604 of file spi_7seg.c.

NUTDEVICE devSpi7SEG

Initial value:

 {
    NULL,                               
    {'7', 'S', 'E', 'G', 0, 0, 0},  
    IFTYP_CHAR,                         
    0,                                  
    0,                                  
    &nodeSpi7SEG,                       
    0,                              
    Spi7segInit,                        
    Spi7SegIOCtl,                   
        0,                                                              
    Spi7segWrite,                   

    0,                                                          

    Spi7SegOpen,                                
    Spi7SegClose,                               
    0                                                           
}

7seg device implementation structure.

Definition at line 616 of file spi_7seg.c.

Data Structures

Defines

Functions

Variables

Detailed Description

Define Documentation

Function Documentation

Variable Documentation