include/dtt.h

   1 /*
   2  * (C) Copyright 2001
   3  * Erik Theisen,  Wave 7 Optics, etheisen@mindspring.com.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Digital Thermometers and Thermostats.
  26  */
  27 #ifndef _DTT_H_
  28 #define _DTT_H_
  29
  30 #if defined(CONFIG_DTT_LM75) || \
  31     defined(CONFIG_DTT_DS1621) || \
  32     defined(CONFIG_DTT_LM81) || \
  33     defined(CONFIG_DTT_ADM1021)
  34
  35 #define CONFIG_DTT                              /* We have a DTT */
  36
  37 #ifndef CONFIG_DTT_ADM1021
  38 #define DTT_COMMERCIAL_MAX_TEMP 70              /* 0 - +70 C */
  39 #define DTT_INDUSTRIAL_MAX_TEMP 85              /* -40 - +85 C */
  40 #define DTT_AUTOMOTIVE_MAX_TEMP 105             /* -40 - +105 C */
  41 #ifndef CFG_DTT_MAX_TEMP
  42 #define CFG_DTT_MAX_TEMP DTT_COMMERCIAL_MAX_TEMP
  43 #endif
  44 #ifndef CFG_DTT_HYSTERESIS
  45 #define CFG_DTT_HYSTERESIS      5               /* 5 C */
  46 #endif
  47 #endif /* CONFIG_DTT_ADM1021 */
  48
  49 extern int dtt_init (void);
  50 extern int dtt_read(int sensor, int reg);
  51 extern int dtt_write(int sensor, int reg, int val);
  52 extern int dtt_get_temp(int sensor);
  53 #endif
  54
  55 #if defined(CONFIG_DTT_LM75)
  56 #define DTT_READ_TEMP           0x0
  57 #define DTT_CONFIG              0x1
  58 #define DTT_TEMP_HYST           0x2
  59 #define DTT_TEMP_SET            0x3
  60 #endif
  61
  62 #if defined(CONFIG_DTT_LM81)
  63 #define DTT_READ_TEMP           0x27
  64 #define DTT_CONFIG_TEMP         0x4b
  65 #define DTT_TEMP_MAX            0x39
  66 #define DTT_TEMP_HYST           0x3a
  67 #define DTT_CONFIG              0x40
  68 #endif
  69
  70 #if defined(CONFIG_DTT_DS1621)
  71 #define DTT_READ_TEMP           0xAA
  72 #define DTT_READ_COUNTER        0xA8
  73 #define DTT_READ_SLOPE          0xA9
  74 #define DTT_WRITE_START_CONV    0xEE
  75 #define DTT_WRITE_STOP_CONV     0x22
  76 #define DTT_TEMP_HIGH           0xA1
  77 #define DTT_TEMP_LOW            0xA2
  78 #define DTT_CONFIG              0xAC
  79 #endif
  80
  81 #if defined(CONFIG_DTT_ADM1021)
  82 #define DTT_READ_LOC_VALUE      0x00
  83 #define DTT_READ_REM_VALUE      0x01
  84 #define DTT_READ_STATUS         0x02
  85 #define DTT_READ_CONFIG         0x03
  86 #define DTT_READ_CONVRATE       0x04
  87 #define DTT_READ_LOC_HIGHLIM    0x05
  88 #define DTT_READ_LOC_LOWLIM     0x06
  89 #define DTT_READ_REM_HIGHLIM    0x07
  90 #define DTT_READ_REM_LOWLIM     0x08
  91 #define DTT_READ_DEVID          0xfe
  92
  93 #define DTT_WRITE_CONFIG        0x09
  94 #define DTT_WRITE_CONVRATE      0x0a
  95 #define DTT_WRITE_LOC_HIGHLIM   0x0b
  96 #define DTT_WRITE_LOC_LOWLIM    0x0c
  97 #define DTT_WRITE_REM_HIGHLIM   0x0d
  98 #define DTT_WRITE_REM_LOWLIM    0x0e
  99 #define DTT_WRITE_ONESHOT       0x0f
 100
 101 #define DTT_STATUS_BUSY         0x80    /* 1=ADC Converting */
 102 #define DTT_STATUS_LHIGH        0x40    /* 1=Local High Temp Limit Tripped */
 103 #define DTT_STATUS_LLOW         0x20    /* 1=Local Low Temp Limit Tripped */
 104 #define DTT_STATUS_RHIGH        0x10    /* 1=Remote High Temp Limit Tripped */
 105 #define DTT_STATUS_RLOW         0x08    /* 1=Remote Low Temp Limit Tripped */
 106 #define DTT_STATUS_OPEN         0x04    /* 1=Remote Sensor Open-Circuit */
 107
 108 #define DTT_CONFIG_ALERT_MASKED 0x80    /* 0=ALERT Enabled, 1=ALERT Masked */
 109 #define DTT_CONFIG_STANDBY      0x40    /* 0=Run, 1=Standby */
 110
 111 #define DTT_ADM1021_DEVID       0x41
 112 #endif
 113
 114 #endif /* _DTT_H_ */