| 1 | /* |
| 2 | * Texas Instruments TMP105 Temperature Sensor |
| 3 | * |
| 4 | * Browse the data sheet: |
| 5 | * |
| 6 | * http://www.ti.com/lit/gpn/tmp105 |
| 7 | * |
| 8 | * Copyright (C) 2012 Alex Horn <alex.horn@cs.ox.ac.uk> |
| 9 | * Copyright (C) 2008-2012 Andrzej Zaborowski <balrogg@gmail.com> |
| 10 | * |
| 11 | * This work is licensed under the terms of the GNU GPL, version 2 or |
| 12 | * later. See the COPYING file in the top-level directory. |
| 13 | */ |
| 14 | #ifndef QEMU_TMP105_H |
| 15 | #define QEMU_TMP105_H |
| 16 | |
| 17 | #include "hw/i2c/i2c.h" |
| 18 | #include "hw/sensor/tmp105_regs.h" |
| 19 | #include "qom/object.h" |
| 20 | |
| 21 | #define TYPE_TMP105 "tmp105" |
| 22 | OBJECT_DECLARE_SIMPLE_TYPE(TMP105State, TMP105) |
| 23 | |
| 24 | /** |
| 25 | * TMP105State: |
| 26 | * @config: Bits 5 and 6 (value 32 and 64) determine the precision of the |
| 27 | * temperature. See Table 8 in the data sheet. |
| 28 | * |
| 29 | * @see_also: http://www.ti.com/lit/gpn/tmp105 |
| 30 | */ |
| 31 | struct TMP105State { |
| 32 | /*< private >*/ |
| 33 | I2CSlave i2c; |
| 34 | /*< public >*/ |
| 35 | |
| 36 | uint8_t len; |
| 37 | uint8_t buf[2]; |
| 38 | qemu_irq pin; |
| 39 | |
| 40 | uint8_t pointer; |
| 41 | uint8_t config; |
| 42 | int16_t temperature; |
| 43 | int16_t limit[2]; |
| 44 | int faults; |
| 45 | uint8_t alarm; |
| 46 | /* |
| 47 | * The TMP105 initially looks for a temperature rising above T_high; |
| 48 | * once this is detected, the condition it looks for next is the |
| 49 | * temperature falling below T_low. This flag is false when initially |
| 50 | * looking for T_high, true when looking for T_low. |
| 51 | */ |
| 52 | bool detect_falling; |
| 53 | }; |
| 54 | |
| 55 | #endif |