diff options
Diffstat (limited to 'peripheral/libupm/src/wheelencoder/wheelencoder.cxx')
-rw-r--r-- | peripheral/libupm/src/wheelencoder/wheelencoder.cxx | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/peripheral/libupm/src/wheelencoder/wheelencoder.cxx b/peripheral/libupm/src/wheelencoder/wheelencoder.cxx deleted file mode 100644 index ae48c1d..0000000 --- a/peripheral/libupm/src/wheelencoder/wheelencoder.cxx +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Author: Jon Trulson <jtrulson@ics.com> - * Copyright (c) 2015 Intel Corporation. - * - * 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. - */ - -#include <iostream> - -#ifdef JAVACALLBACK -#undef JAVACALLBACK -#endif -#include "wheelencoder.h" - -using namespace upm; -using namespace std; - -WheelEncoder::WheelEncoder(int pin) : - m_gpio(pin) -{ - m_gpio.dir(mraa::DIR_IN); - - initClock(); - m_counter = 0; - m_isrInstalled = false; -} - -WheelEncoder::~WheelEncoder() -{ - stopCounter(); -} - -void WheelEncoder::initClock() -{ - gettimeofday(&m_startTime, NULL); -} - -uint32_t WheelEncoder::getMillis() -{ - struct timeval elapsed, now; - uint32_t elapse; - - // get current time - gettimeofday(&now, NULL); - - // compute the delta since m_startTime - if( (elapsed.tv_usec = now.tv_usec - m_startTime.tv_usec) < 0 ) - { - elapsed.tv_usec += 1000000; - elapsed.tv_sec = now.tv_sec - m_startTime.tv_sec - 1; - } - else - { - elapsed.tv_sec = now.tv_sec - m_startTime.tv_sec; - } - - elapse = (uint32_t)((elapsed.tv_sec * 1000) + (elapsed.tv_usec / 1000)); - - // never return 0 - if (elapse == 0) - elapse = 1; - - return elapse; -} - -void WheelEncoder::startCounter() -{ - initClock(); - m_counter = 0; - - // install our interrupt handler - if (!m_isrInstalled) - m_gpio.isr(mraa::EDGE_RISING, &wheelISR, this); - - m_isrInstalled = true; -} - -void WheelEncoder::stopCounter() -{ - // remove the interrupt handler - if (m_isrInstalled) - m_gpio.isrExit(); - - m_isrInstalled = false; -} - -void WheelEncoder::wheelISR(void *ctx) -{ - upm::WheelEncoder *This = (upm::WheelEncoder *)ctx; - This->m_counter++; -} - |