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Diffstat (limited to 'include/dtt.h')
| -rw-r--r-- | include/dtt.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/dtt.h b/include/dtt.h new file mode 100644 index 0000000..f3d95ff --- /dev/null +++ b/include/dtt.h @@ -0,0 +1,67 @@ +/* + * (C) Copyright 2001 + * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +/* + * Digital Thermometers and Thermostats. + */ +#ifndef _DTT_H_ +#define _DTT_H_ + +#if defined(CONFIG_DTT_LM75) || defined(CONFIG_DTT_DS1621) +#define CONFIG_DTT /* We have a DTT */ + +#define DTT_COMMERCIAL_MAX_TEMP 70 /* 0 - +70 C */ +#define DTT_INDUSTRIAL_MAX_TEMP 85 /* -40 - +85 C */ +#define DTT_AUTOMOTIVE_MAX_TEMP 105 /* -40 - +105 C */ +#ifndef CFG_DTT_MAX_TEMP +#define CFG_DTT_MAX_TEMP DTT_COMMERCIAL_MAX_TEMP +#endif +#ifndef CFG_DTT_HYSTERESIS +#define CFG_DTT_HYSTERESIS 5 /* 5 C */ +#endif + +extern int dtt_init (void); +extern int dtt_read(int sensor, int reg); +extern int dtt_write(int sensor, int reg, int val); +extern int dtt_get_temp(int sensor); +#endif + +#if defined(CONFIG_DTT_LM75) +#define DTT_READ_TEMP 0x0 +#define DTT_CONFIG 0x1 +#define DTT_TEMP_HYST 0x2 +#define DTT_TEMP_SET 0x3 +#endif + +#if defined(CONFIG_DTT_DS1621) +#define DTT_READ_TEMP 0xAA +#define DTT_READ_COUNTER 0xA8 +#define DTT_READ_SLOPE 0xA9 +#define DTT_WRITE_START_CONV 0xEE +#define DTT_WRITE_STOP_CONV 0x22 +#define DTT_TEMP_HIGH 0xA1 +#define DTT_TEMP_LOW 0xA2 +#define DTT_CONFIG 0xAC +#endif + +#endif /* _DTT_H_ */ |