LXR qemu/include/hw/sensor/tmp105.h

   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"
  22OBJECT_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 */
  31struct 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
  56