3 * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * Digital Thermometers and Thermostats.
30 #if defined(CONFIG_DTT_LM75) || \
31 defined(CONFIG_DTT_DS1621) || \
32 defined(CONFIG_DTT_ADM1021)
34 #define CONFIG_DTT /* We have a DTT */
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
43 #ifndef CFG_DTT_HYSTERESIS
44 #define CFG_DTT_HYSTERESIS 5 /* 5 C */
46 #endif /* CONFIG_DTT_ADM1021 */
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);
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
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
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
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
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 */
99 #define DTT_CONFIG_ALERT_MASKED 0x80 /* 0=ALERT Enabled, 1=ALERT Masked */
100 #define DTT_CONFIG_STANDBY 0x40 /* 0=Run, 1=Standby */
102 #define DTT_ADM1021_DEVID 0x41