mcp9808.h

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/* Copyright 2014, Peter A. Bigot
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of the software nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef BSP430_SENSORS_MCP9808_H
#define BSP430_SENSORS_MCP9808_H

#include <bsp430/serial.h>
#include <bsp430/periph/timer.h>

#define BSP430_SENSORS_MCP9808_I2C_ADDRESS 0x18

#define BSP430_SENSORS_MCP9808_REGNO_CONFIG 1

#define BSP430_SENSORS_MCP9808_REGNO_TUPPER 2

#define BSP430_SENSORS_MCP9808_REGNO_TLOWER 3

#define BSP430_SENSORS_MCP9808_REGNO_TCRIT 4

#define BSP430_SENSORS_MCP9808_REGNO_TA 5

#define BSP430_SENSORS_MCP9808_REGNO_MFGID 6

#define BSP430_SENSORS_MCP9808_REGNO_DEVID 7

#define BSP430_SENSORS_MCP9808_REGNO_RESOLUTION 8

#define BSP430_SENSORS_MCP9808_CONFIG_HYST0p0 0x0000

#define BSP430_SENSORS_MCP9808_CONFIG_HYST1p5 0x0200

#define BSP430_SENSORS_MCP9808_CONFIG_HYST3p0 0x0400

#define BSP430_SENSORS_MCP9808_CONFIG_HYST6p0 0x0600

#define BSP430_SENSORS_MCP9808_CONFIG_HYSTM 0x0600

#define BSP430_SENSORS_MCP9808_CONFIG_SHDN 0x0010

#define BSP430_SENSORS_MCP9808_CONFIG_CRITLCK 0x0080

#define BSP430_SENSORS_MCP9808_CONFIG_WNDWLCK 0x0040

#define BSP430_SENSORS_MCP9808_CONFIG_INTCLR 0x0020

#define BSP430_SENSORS_MCP9808_CONFIG_ALRSTAT 0x0010

#define BSP430_SENSORS_MCP9808_CONFIG_ALRCTL 0x0008

#define BSP430_SENSORS_MCP9808_CONFIG_ALRSEL 0x0004

#define BSP430_SENSORS_MCP9808_CONFIG_ALRPOL 0x0002

#define BSP430_SENSORS_MCP9808_CONFIG_ALRMOD 0x0001

#define BSP430_SENSORS_MCP9808_CONVERSION_ms(res_) ((0 == (res_)) ? 30  \
                                                    : (1 == (res_)) ? 35 \
                                                    : (2 == (res_)) ? 130 \
                                                    : 250)

#define BSP430_SENSORS_MCP9808_TEMP_CRIT 0x8000

#define BSP430_SENSORS_MCP9808_TEMP_HIGH 0x4000

#define BSP430_SENSORS_MCP9808_TEMP_LOW 0x2000

#define BSP430_SENSORS_MCP9808_TEMP_SIGN 0x1000

#define BSP430_SENSORS_MCP9808_TEMP_MASK 0x0FFF

#define BSP430_SENSORS_MCP9808_OFFSET_Kd160 (43704UL)

static BSP430_CORE_INLINE int
iBSP430sensorsMCP9808tempFromRaw_cK (uint16_t raw)
{
  long v = 10 * (raw & BSP430_SENSORS_MCP9808_TEMP_MASK);
  v += BSP430_SENSORS_MCP9808_OFFSET_Kd160;
  /* Convert to K/1600 then divide by 16 to get K/100 = cK. */
  v = (v * 10) / 16;
  if (BSP430_SENSORS_MCP9808_TEMP_SIGN & raw) {
    v = -v;
  }
  return (int)v;
}

#endif /* BSP430_SENSORS_MCP9808_H */