1 /* -------------------------------------------------------------------- */
2 /* i2c-pcf8584.h: PCF 8584 global defines */
3 /* -------------------------------------------------------------------- */
4 /* Copyright (C) 1996 Simon G. Vogl
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
21 /* -------------------------------------------------------------------- */
23 /* With some changes from Frodo Looijaard <frodol@dds.nl> */
26 #define I2C_PCF8584_H 1
28 /* ----- Control register bits ---------------------------------------- */
29 #define I2C_PCF_PIN 0x80
30 #define I2C_PCF_ESO 0x40
31 #define I2C_PCF_ES1 0x20
32 #define I2C_PCF_ES2 0x10
33 #define I2C_PCF_ENI 0x08
34 #define I2C_PCF_STA 0x04
35 #define I2C_PCF_STO 0x02
36 #define I2C_PCF_ACK 0x01
38 #define I2C_PCF_START (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
39 #define I2C_PCF_STOP (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_STO | I2C_PCF_ACK)
40 #define I2C_PCF_REPSTART ( I2C_PCF_ESO | I2C_PCF_STA | I2C_PCF_ACK)
41 #define I2C_PCF_IDLE (I2C_PCF_PIN | I2C_PCF_ESO | I2C_PCF_ACK)
43 /* ----- Status register bits ----------------------------------------- */
44 /*#define I2C_PCF_PIN 0x80 as above*/
46 #define I2C_PCF_INI 0x40 /* 1 if not initialized */
47 #define I2C_PCF_STS 0x20
48 #define I2C_PCF_BER 0x10
49 #define I2C_PCF_AD0 0x08
50 #define I2C_PCF_LRB 0x08
51 #define I2C_PCF_AAS 0x04
52 #define I2C_PCF_LAB 0x02
53 #define I2C_PCF_BB 0x01
55 /* ----- Chip clock frequencies --------------------------------------- */
56 #define I2C_PCF_CLK3 0x00
57 #define I2C_PCF_CLK443 0x10
58 #define I2C_PCF_CLK6 0x14
59 #define I2C_PCF_CLK 0x18
60 #define I2C_PCF_CLK12 0x1c
62 /* ----- transmission frequencies ------------------------------------- */
63 #define I2C_PCF_TRNS90 0x00 /* 90 kHz */
64 #define I2C_PCF_TRNS45 0x01 /* 45 kHz */
65 #define I2C_PCF_TRNS11 0x02 /* 11 kHz */
66 #define I2C_PCF_TRNS15 0x03 /* 1.5 kHz */
69 /* ----- Access to internal registers according to ES1,ES2 ------------ */
70 /* they are mapped to the data port ( a0 = 0 ) */
71 /* available when ESO == 0 : */
73 #define I2C_PCF_OWNADR 0
74 #define I2C_PCF_INTREG I2C_PCF_ES2
75 #define I2C_PCF_CLKREG I2C_PCF_ES1
77 #endif /* I2C_PCF8584_H */
This page took 0.036257 seconds and 5 git commands to generate.