Diff: LM75B/LM75B.cpp

Revision:

9:58eb378727d9

Parent:

8:80d49dd91542

Child:

10:0b5e0dfee08e

--- a/LM75B/LM75B.cpp	Wed Oct 01 13:27:35 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,286 +0,0 @@
-/* LM75B Driver Library
- * Copyright (c) 2013 Neil Thiessen
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "LM75B.h"
-
-LM75B::LM75B(PinName sda, PinName scl, Address addr, int hz) : m_I2C(sda, scl), m_ADDR((int)addr)
-{
-    //Set the I2C bus frequency
-    m_I2C.frequency(hz);
-}
-
-bool LM75B::open()
-{
-    //Probe for the LM75B using a Zero Length Transfer
-    if (!m_I2C.write(m_ADDR, NULL, 0)) {
-        //Return success
-        return true;
-    } else {
-        //Return failure
-        return false;
-    }
-}
-
-LM75B::PowerMode LM75B::powerMode()
-{
-    //Read the 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Return the status of the SHUTDOWN bit
-    if (value & (1 << 0))
-        return POWER_SHUTDOWN;
-    else
-        return POWER_NORMAL;
-}
-
-void LM75B::powerMode(PowerMode mode)
-{
-    //Read the current 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Set or clear the SHUTDOWN bit
-    if (mode == POWER_SHUTDOWN)
-        value |= (1 << 0);
-    else
-        value &= ~(1 << 0);
-
-    //Write the value back out
-    write8(REG_CONF, value);
-}
-
-LM75B::OSMode LM75B::osMode()
-{
-    //Read the 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Return the status of the OS_COMP_INT bit
-    if (value & (1 << 1))
-        return OS_INTERRUPT;
-    else
-        return OS_COMPARATOR;
-}
-
-void LM75B::osMode(OSMode mode)
-{
-    //Read the current 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Set or clear the OS_COMP_INT bit
-    if (mode == OS_INTERRUPT)
-        value |= (1 << 1);
-    else
-        value &= ~(1 << 1);
-
-    //Write the value back out
-    write8(REG_CONF, value);
-}
-
-LM75B::OSPolarity LM75B::osPolarity()
-{
-    //Read the 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Return the status of the OS_POL bit
-    if (value & (1 << 2))
-        return OS_ACTIVE_HIGH;
-    else
-        return OS_ACTIVE_LOW;
-}
-
-void LM75B::osPolarity(OSPolarity polarity)
-{
-    //Read the current 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Set or clear the OS_POL bit
-    if (polarity == OS_ACTIVE_HIGH)
-        value |= (1 << 2);
-    else
-        value &= ~(1 << 2);
-
-    //Write the value back out
-    write8(REG_CONF, value);
-}
-
-LM75B::OSFaultQueue LM75B::osFaultQueue()
-{
-    //Read the 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Return the status of the OS_F_QUE bits
-    if ((value & (1 << 3)) && (value & (1 << 4)))
-        return OS_FAULT_QUEUE_6;
-    else if (!(value & (1 << 3)) && (value & (1 << 4)))
-        return OS_FAULT_QUEUE_4;
-    else if ((value & (1 << 3)) && !(value & (1 << 4)))
-        return OS_FAULT_QUEUE_2;
-    else
-        return OS_FAULT_QUEUE_1;
-}
-
-void LM75B::osFaultQueue(OSFaultQueue queue)
-{
-    //Read the current 8-bit register value
-    char value = read8(REG_CONF);
-
-    //Clear the old OS_F_QUE bits
-    value &= ~(3 << 3);
-
-    //Set the new OS_F_QUE bits
-    if (queue == OS_FAULT_QUEUE_2)
-        value |= (1 << 3);
-    else if (queue == OS_FAULT_QUEUE_4)
-        value |= (2 << 3);
-    else if (queue == OS_FAULT_QUEUE_6)
-        value |= (3 << 3);
-
-    //Write the value back out
-    write8(REG_CONF, value);
-}
-
-float LM75B::alertTemp()
-{
-    //Use the 9-bit helper to read the TOS register
-    return readAlertTempHelper(REG_TOS);
-}
-
-void LM75B::alertTemp(float temp)
-{
-    //Use the 9-bit helper to write to the TOS register
-    return writeAlertTempHelper(REG_TOS, temp);
-}
-
-float LM75B::alertHyst()
-{
-    //Use the 9-bit helper to read the THYST register
-    return readAlertTempHelper(REG_THYST);
-}
-
-void LM75B::alertHyst(float temp)
-{
-    //Use the 9-bit helper to write to the THYST register
-    return writeAlertTempHelper(REG_THYST, temp);
-}
-
-float LM75B::temp()
-{
-    //Signed return value
-    short value;
-
-    //Read the 11-bit raw temperature value
-    value = read16(REG_TEMP) >> 5;
-
-    //Sign extend negative numbers
-    if (value & (1 << 10))
-        value |= 0xFC00;
-
-    //Return the temperature in °C
-    return value * 0.125;
-}
-
-#ifdef MBED_OPERATORS
-LM75B::operator float()
-{
-    //Return the current temperature reading
-    return temp();
-}
-#endif
-
-char LM75B::read8(char reg)
-{
-    //Select the register
-    m_I2C.write(m_ADDR, &reg, 1, true);
-
-    //Read the 8-bit register
-    m_I2C.read(m_ADDR, &reg, 1);
-
-    //Return the byte
-    return reg;
-}
-
-void LM75B::write8(char reg, char data)
-{
-    //Create a temporary buffer
-    char buff[2];
-
-    //Load the register address and 8-bit data
-    buff[0] = reg;
-    buff[1] = data;
-
-    //Write the data
-    m_I2C.write(m_ADDR, buff, 2);
-}
-
-unsigned short LM75B::read16(char reg)
-{
-    //Create a temporary buffer
-    char buff[2];
-
-    //Select the register
-    m_I2C.write(m_ADDR, &reg, 1, true);
-
-    //Read the 16-bit register
-    m_I2C.read(m_ADDR, buff, 2);
-
-    //Return the combined 16-bit value
-    return (buff[0] << 8) | buff[1];
-}
-
-void LM75B::write16(char reg, unsigned short data)
-{
-    //Create a temporary buffer
-    char buff[3];
-
-    //Load the register address and 16-bit data
-    buff[0] = reg;
-    buff[1] = data >> 8;
-    buff[2] = data;
-
-    //Write the data
-    m_I2C.write(m_ADDR, buff, 3);
-}
-
-float LM75B::readAlertTempHelper(char reg)
-{
-    //Signed return value
-    short value;
-
-    //Read the 9-bit raw temperature value
-    value = read16(reg) >> 7;
-
-    //Sign extend negative numbers
-    if (value & (1 << 8))
-        value |= 0xFF00;
-
-    //Return the temperature in °C
-    return value * 0.5;
-}
-
-void LM75B::writeAlertTempHelper(char reg, float temp)
-{
-    //Range limit temp
-    if (temp < -55.0)
-        temp = -55.0;
-    else if (temp > 125.0)
-        temp = 125.0;
-
-    //Extract and shift the signed integer
-    short value = temp * 2;
-    value <<= 7;
-
-    //Send the new value
-    write16(reg, value);
-}