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Dependents: temp xj-Nucleo-F303K8-SHT75-TEST
Diff: sht75.h
- Revision:
- 1:20aa2d4a28bf
- Parent:
- 0:f401474a3e96
- Child:
- 2:dd218144f9fe
--- a/sht75.h Wed Oct 27 15:27:38 2010 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,75 +0,0 @@
-/* mbed Sensiron SHT7x temperature and humidity sensor library
-*
-* Sensiron data at http://www.sensirion.com/en/01_humidity_sensors/06_humidity_sensor_sht75.htm
-*
-* Copyright (c) Ian Molesworth October 2010
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy
-* of this software and associated documentation files (the "Software"), to use
-* copy or modify the software for private or non-commercial purposes only.
-*
-* The above copyright notice and this permission notice shall be included in
-* all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-* THE SOFTWARE.
-*/
-
-
-#ifndef SHT75_H
-#define SHT75_H
-
-#include "mbed.h"
-
-const float C1= -4.0; // for 12 Bit humi
-const float C2= +0.0405; // for 12 Bit humi
-const float C3= -0.0000028; // for 12 Bit hum
-const float TL= -39.61; // 3v 14 bit
-const float T1= +0.01; // for 14 Bit @ 5V
-const float T2= +0.00008; // for 14 Bit @ 5V
-
-class SHT75
- {
- public:
- /** Create an SHT object connected to the specified Digital pins
- *
- * @param pclock digital pin to use as clock
- * @param pdata digital pin to use as data bus ( bidirectional )
- */
- SHT75(PinName pclock, PinName pdata): _clock(pclock), _data(pdata) {};
- /** read the temperature ticks value 14 bit resolution
- *
- * @param int *temp pointer to an integer to hold the tick value
- * @returns boolean true if read acknowledges
- */
- bool readTempTicks(int* temp);
- /** read the humidity ticks value 12 bit resolution
- *
- * @param int *temp pointer to an integer to hold the tick value
- * @returns boolean true if read acknowledges
- */
- bool readHumidityTicks(int* temp);
- /** start up reset
- *
- * call to resync or abort current operation.
- * worth calling every now and then to make sure your system is not hung.
- */
- void reset(void);
- void softReset(void);
- int readStatus(void);
-
- private:
- DigitalInOut _data;
- DigitalOut _clock;
-
- void start(void);
- int read(char);
- bool write(char);
- };
-
-#endif