![](/media/cache/group/arm_mbed.PNG.50x50_q85.png)
Demo project for IoT World Hackathon
Dependencies: Chainable_RGB_LED mbed mbedConnectorInterface mbedEndpointNetwork
Diff: mbedEndpointResources/TempResource.h
- Revision:
- 0:a9025db1ac76
diff -r 000000000000 -r a9025db1ac76 mbedEndpointResources/TempResource.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbedEndpointResources/TempResource.h Tue May 12 00:51:01 2015 +0000 @@ -0,0 +1,64 @@ +/** + * @file TempResource.h + * @brief mbed CoAP Endpoint + * @author Michael Koster + * @version 1.0 + * @see + * + * Copyright (c) 2015 + * + * 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. + */ + +#ifndef __TEMP_RESOURCE_H__ +#define __TEMP_RESOURCE_H__ + +// Base class +#include "DynamicResource.h" + +// Temp Sensor connected to A0 +AnalogIn temp_in(A0); + +/** TempResource class + */ +class TempResource : public DynamicResource +{ +public: + /** + Default constructor + @param logger input logger instance for this resource + @param name input the resource name + @param observable input the resource is Observable (default: FALSE) + */ + TempResource(const Logger *logger,const char *name,const bool observable = false) : + DynamicResource(logger,name,"Temperature", SN_GRS_GET_ALLOWED,observable) { + } + + /** + Get the value of the Temperature Sensor + @returns string containing the temperature value in Fahrenheit + */ + virtual string get() { + char temp_str[8]; + int B = 3975; + memset(temp_str,0,8); + float temp_read = temp_in.read(); + float resistance = (1-temp_read) * 10000/temp_read; //get the resistance of the sensor; + float temp_c = 1/( logf(resistance/10000)/B + 1/298.15 ) - 273.15;//convert to temperature via datasheet ; + float temp_f = (1.8 * (double) temp_c) + 32; + sprintf(temp_str,"%8.2f", temp_f); + return string(temp_str); + } +}; + +#endif // __TEMP_RESOURCE_H__