80 lines
1.8 KiB
C
80 lines
1.8 KiB
C
|
/*
|
||
|
|
*
|
||
|
|
* display7seg - Driver interface for the 7-segment display
|
||
|
|
* present on Sun Microsystems CP1400 and CP1500
|
||
|
|
*
|
||
|
|
* Copyright (c) 2000 Eric Brower <ebrower@usa.net>
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __display7seg_h__
|
||
|
|
#define __display7seg_h__
|
||
|
|
|
||
|
|
#define D7S_IOC 'p'
|
||
|
|
|
||
|
|
#define D7SIOCRD _IOR(D7S_IOC, 0x45, int) /* Read device state */
|
||
|
|
#define D7SIOCWR _IOW(D7S_IOC, 0x46, int) /* Write device state */
|
||
|
|
#define D7SIOCTM _IO (D7S_IOC, 0x47) /* Translate mode (FLIP)*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* ioctl flag definitions
|
||
|
|
*
|
||
|
|
* POINT - Toggle decimal point (0=absent 1=present)
|
||
|
|
* ALARM - Toggle alarm LED (0=green 1=red)
|
||
|
|
* FLIP - Toggle inverted mode (0=normal 1=flipped)
|
||
|
|
* bits 0-4 - Character displayed (see definitions below)
|
||
|
|
*
|
||
|
|
* Display segments are defined as follows,
|
||
|
|
* subject to D7S_FLIP register state:
|
||
|
|
*
|
||
|
|
* a
|
||
|
|
* ---
|
||
|
|
* f| |b
|
||
|
|
* -g-
|
||
|
|
* e| |c
|
||
|
|
* ---
|
||
|
|
* d
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define D7S_POINT (1 << 7) /* Decimal point*/
|
||
|
|
#define D7S_ALARM (1 << 6) /* Alarm LED */
|
||
|
|
#define D7S_FLIP (1 << 5) /* Flip display */
|
||
|
|
|
||
|
|
#define D7S_0 0x00 /* Numerals 0-9 */
|
||
|
|
#define D7S_1 0x01
|
||
|
|
#define D7S_2 0x02
|
||
|
|
#define D7S_3 0x03
|
||
|
|
#define D7S_4 0x04
|
||
|
|
#define D7S_5 0x05
|
||
|
|
#define D7S_6 0x06
|
||
|
|
#define D7S_7 0x07
|
||
|
|
#define D7S_8 0x08
|
||
|
|
#define D7S_9 0x09
|
||
|
|
#define D7S_A 0x0A /* Letters A-F, H, L, P */
|
||
|
|
#define D7S_B 0x0B
|
||
|
|
#define D7S_C 0x0C
|
||
|
|
#define D7S_D 0x0D
|
||
|
|
#define D7S_E 0x0E
|
||
|
|
#define D7S_F 0x0F
|
||
|
|
#define D7S_H 0x10
|
||
|
|
#define D7S_E2 0x11
|
||
|
|
#define D7S_L 0x12
|
||
|
|
#define D7S_P 0x13
|
||
|
|
#define D7S_SEGA 0x14 /* Individual segments */
|
||
|
|
#define D7S_SEGB 0x15
|
||
|
|
#define D7S_SEGC 0x16
|
||
|
|
#define D7S_SEGD 0x17
|
||
|
|
#define D7S_SEGE 0x18
|
||
|
|
#define D7S_SEGF 0x19
|
||
|
|
#define D7S_SEGG 0x1A
|
||
|
|
#define D7S_SEGABFG 0x1B /* Segment groupings */
|
||
|
|
#define D7S_SEGCDEG 0x1C
|
||
|
|
#define D7S_SEGBCEF 0x1D
|
||
|
|
#define D7S_SEGADG 0x1E
|
||
|
|
#define D7S_BLANK 0x1F /* Clear all segments */
|
||
|
|
|
||
|
|
#define D7S_MIN_VAL 0x0
|
||
|
|
#define D7S_MAX_VAL 0x1F
|
||
|
|
|
||
|
|
#endif /* ifndef __display7seg_h__ */
|