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_ADM1021)
  33
  34 #define CONFIG_DTT                              /* We have a DTT */
  35
  36 #ifndef CONFIG_DTT_ADM1021
  37 #define DTT_COMMERCIAL_MAX_TEMP 70              /* 0 - +70 C */
  38 #define DTT_INDUSTRIAL_MAX_TEMP 85              /* -40 - +85 C */
  39 #define DTT_AUTOMOTIVE_MAX_TEMP 105             /* -40 - +105 C */
  40 #ifndef CFG_DTT_MAX_TEMP
  41 #define CFG_DTT_MAX_TEMP DTT_COMMERCIAL_MAX_TEMP
  42 #endif
  43 #ifndef CFG_DTT_HYSTERESIS
  44 #define CFG_DTT_HYSTERESIS      5               /* 5 C */
  45 #endif
  46 #endif /* CONFIG_DTT_ADM1021 */
  47
  48 extern int dtt_init (void);
  49 extern int dtt_read(int sensor, int reg);
  50 extern int dtt_write(int sensor, int reg, int val);
  51 extern int dtt_get_temp(int sensor);
  52 #endif
  53
  54 #if defined(CONFIG_DTT_LM75)
  55 #define DTT_READ_TEMP           0x0
  56 #define DTT_CONFIG              0x1
  57 #define DTT_TEMP_HYST           0x2
  58 #define DTT_TEMP_SET            0x3
  59 #endif
  60
  61 #if defined(CONFIG_DTT_DS1621)
  62 #define DTT_READ_TEMP           0xAA
  63 #define DTT_READ_COUNTER        0xA8
  64 #define DTT_READ_SLOPE          0xA9
  65 #define DTT_WRITE_START_CONV    0xEE
  66 #define DTT_WRITE_STOP_CONV     0x22
  67 #define DTT_TEMP_HIGH           0xA1
  68 #define DTT_TEMP_LOW            0xA2
  69 #define DTT_CONFIG              0xAC
  70 #endif
  71
  72 #if defined(CONFIG_DTT_ADM1021)
  73 #define DTT_READ_LOC_VALUE      0x00
  74 #define DTT_READ_REM_VALUE      0x01
  75 #define DTT_READ_STATUS         0x02
  76 #define DTT_READ_CONFIG         0x03
  77 #define DTT_READ_CONVRATE       0x04
  78 #define DTT_READ_LOC_HIGHLIM    0x05
  79 #define DTT_READ_LOC_LOWLIM     0x06
  80 #define DTT_READ_REM_HIGHLIM    0x07
  81 #define DTT_READ_REM_LOWLIM     0x08
  82 #define DTT_READ_DEVID          0xfe
  83
  84 #define DTT_WRITE_CONFIG        0x09
  85 #define DTT_WRITE_CONVRATE      0x0a
  86 #define DTT_WRITE_LOC_HIGHLIM   0x0b
  87 #define DTT_WRITE_LOC_LOWLIM    0x0c
  88 #define DTT_WRITE_REM_HIGHLIM   0x0d
  89 #define DTT_WRITE_REM_LOWLIM    0x0e
  90 #define DTT_WRITE_ONESHOT       0x0f
  91
  92 #define DTT_STATUS_BUSY         0x80    /* 1=ADC Converting */
  93 #define DTT_STATUS_LHIGH        0x40    /* 1=Local High Temp Limit Tripped */
  94 #define DTT_STATUS_LLOW         0x20    /* 1=Local Low Temp Limit Tripped */
  95 #define DTT_STATUS_RHIGH        0x10    /* 1=Remote High Temp Limit Tripped */
  96 #define DTT_STATUS_RLOW         0x08    /* 1=Remote Low Temp Limit Tripped */
  97 #define DTT_STATUS_OPEN         0x04    /* 1=Remote Sensor Open-Circuit */
  98
  99 #define DTT_CONFIG_ALERT_MASKED 0x80    /* 0=ALERT Enabled, 1=ALERT Masked */
 100 #define DTT_CONFIG_STANDBY      0x40    /* 0=Run, 1=Standby */
 101
 102 #define DTT_ADM1021_DEVID       0x41
 103 #endif
 104
 105 #endif /* _DTT_H_ */