Eduardo de Mier / Arduino

Arduino functions millis, micros and eventually some more to come

Dependents:   DigitalCamera_OV5642_WIZwiki-W7500 BMC F746NG_TestAll Prelude_OV5642_dev

Arduino basic compatibility millis(), micros(), evtl. more to come.

micros() and millis() are uint32_t and have a correct overflow at 2^32-1. micros() has a granularity/resolution of 50. This can be changed by a define. 1 microsecond is not realistic because every count needs an irq. A resolution of 50 microseconds means 20KHz irq. That should not take away more than 1 percent overall processing time.

Arduino.h@3:abbc3308dfa1, 2015-03-30 (annotated)

Committer:
eduardoG26
Date:
Mon Mar 30 13:50:18 2015 +0000
Revision:
3:abbc3308dfa1
Parent:
2:215810c8e89e 
TICKER_PERIOD_US changed to 50

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eduardoG26 1:d1b960698e70 1 /*
eduardoG26 1:d1b960698e70 2 The MIT License (MIT)
eduardoG26 1:d1b960698e70 3
eduardoG26 1:d1b960698e70 4 Copyright (c) 2014 calima engineering
eduardoG26 1:d1b960698e70 5
eduardoG26 1:d1b960698e70 6 Permission is hereby granted, free of charge, to any person obtaining a copy
eduardoG26 1:d1b960698e70 7 of this software and associated documentation files (the "Software"), to deal
eduardoG26 1:d1b960698e70 8 in the Software without restriction, including without limitation the rights
eduardoG26 1:d1b960698e70 9 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
eduardoG26 1:d1b960698e70 10 copies of the Software, and to permit persons to whom the Software is
eduardoG26 1:d1b960698e70 11 furnished to do so, subject to the following conditions:
eduardoG26 1:d1b960698e70 12
eduardoG26 1:d1b960698e70 13 The above copyright notice and this permission notice shall be included in
eduardoG26 1:d1b960698e70 14 all copies or substantial portions of the Software.
eduardoG26 1:d1b960698e70 15
eduardoG26 1:d1b960698e70 16 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
eduardoG26 1:d1b960698e70 17 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
eduardoG26 1:d1b960698e70 18 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
eduardoG26 1:d1b960698e70 19 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
eduardoG26 1:d1b960698e70 20 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
eduardoG26 1:d1b960698e70 21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
eduardoG26 1:d1b960698e70 22 THE SOFTWARE.
eduardoG26 1:d1b960698e70 23 */
eduardoG26 1:d1b960698e70 24
eduardoG26 2:215810c8e89e 25 #ifndef ARDUINO_H_
eduardoG26 2:215810c8e89e 26 #define ARDUINO_H_
eduardoG26 0:571ea8a1bbae 27
eduardoG26 0:571ea8a1bbae 28 #include "mbed.h"
eduardoG26 0:571ea8a1bbae 29
eduardoG26 0:571ea8a1bbae 30 // Get millis value similar to arduino
eduardoG26 0:571ea8a1bbae 31 uint32_t millis ();
eduardoG26 0:571ea8a1bbae 32
eduardoG26 2:215810c8e89e 33 // Get micros value similar to arduino
eduardoG26 2:215810c8e89e 34 uint32_t micros ();
eduardoG26 2:215810c8e89e 35
eduardoG26 2:215810c8e89e 36 // Must be called to start timer!
eduardoG26 2:215810c8e89e 37 void StartArduinoTimer ();
eduardoG26 0:571ea8a1bbae 38
eduardoG26 2:215810c8e89e 39 /** Macro for delay()
eduardoG26 2:215810c8e89e 40 *
eduardoG26 2:215810c8e89e 41 * @param void
eduardoG26 2:215810c8e89e 42 */
eduardoG26 2:215810c8e89e 43 #define delay(x) (wait_ms(x))
eduardoG26 2:215810c8e89e 44 /** Macro for delayMicroseconds()
eduardoG26 2:215810c8e89e 45 *
eduardoG26 2:215810c8e89e 46 * @param void
eduardoG26 2:215810c8e89e 47 */
eduardoG26 2:215810c8e89e 48 #define delayMicroseconds(x) (wait_us(x))
eduardoG26 2:215810c8e89e 49
eduardoG26 2:215810c8e89e 50 #endif // See #ifndef ARDUINO_H_
eduardoG26 0:571ea8a1bbae 51 // End of file