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Dependents: AM2303_Hello_World
Fork of DHT11 by
Diff: DHT11.h
- Revision:
- 12:1ad0612823e9
- Parent:
- 11:e91c151d1798
diff -r e91c151d1798 -r 1ad0612823e9 DHT11.h
--- a/DHT11.h Thu Sep 25 14:13:10 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,105 +0,0 @@
-/* Copyright (c) 2014 Shigenori Inoue, MIT License
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
- * and associated documentation files (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge, publish, distribute,
- * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * 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 __DHT11__
-#define __DHT11__
-#include "mbed.h"
-
-/** Example:
- * @code
- * #include "mbed.h"
- * #include "DHT11.h"
- *
- * DHT11 d;
- *
- * main()
- * {
- * int s;
- * s = d.readData();
- * if (s != DHT11::OK) {
- * printf("Error!\r\n");
- * }
- * else {
- * printf("T:%d, H:%d\r\n", d.readTemperature(), d.readHumidity());
- * }
- * }
- * @endcode
- */
-
-class DHT11
-{
-public:
- /** Create a DHT11 interface
- * @param pin 1-wire-like serial I/O port of DHT11
- */
- DHT11(PinName pin);
- ~DHT11();
-
- /** Reading the data from the DHT11
- * @return Error code
- * 0: OK.
- * 1: Reading the data too often.
- * 2: 1-wire bus is busy.
- * 3: DHT11 does not respond.
- * 4: DHT11 is not ready.
- * 5: Checksum is incorrect.
- * 6: Timeout.
- */
- int readData(void);
-
- /** Reading the humidity from the data
- * @return Humidity in %,
- * regardless of the error from readData()
- */
- int readHumidity(void);
-
- /** Reading the temperature from the data
- * @return Temperature in Celcius,
- * regardless of the error from readData()
- */
- int readTemperature(void);
-
- enum ErrorDHT11 {
- OK = 0,
- READ_TOO_OFTEN = 1,
- BUS_BUSY = 2,
- NOT_PRESENT = 3,
- NOT_READY = 4,
- CHKSUM_ERR = 5,
- WATCHDOG_ERR = 6,
- };
-
-private:
- DigitalInOut io;
- InterruptIn io_irq;
- Timer t;
- uint32_t t_pulse_us;
- const static int t_tol_start;
- const static int t_tol_pulse;
- bool first_time;
- uint64_t data;
- uint32_t chksum;
- uint32_t cnt;
- uint32_t wdt;
- bool eod;
- void init(void);
- void pos_edge(void);
- void neg_edge(void);
-};
-
-#endif
\ No newline at end of file
