diff options
Diffstat (limited to 'peripheral/libupm/src/rotaryencoder/rotaryencoder.cxx')
-rw-r--r-- | peripheral/libupm/src/rotaryencoder/rotaryencoder.cxx | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/peripheral/libupm/src/rotaryencoder/rotaryencoder.cxx b/peripheral/libupm/src/rotaryencoder/rotaryencoder.cxx deleted file mode 100644 index 15b7b5d..0000000 --- a/peripheral/libupm/src/rotaryencoder/rotaryencoder.cxx +++ /dev/null @@ -1,95 +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> -#include <string> -#include <stdexcept> - -#include "rotaryencoder.h" - -using namespace upm; -using namespace std; - -RotaryEncoder::RotaryEncoder(int pinA, int pinB) -{ - if ( !(m_gpioA = mraa_gpio_init(pinA)) ) - { - throw std::invalid_argument(std::string(__FUNCTION__) + - ": mraa_gpio_init(pinA) failed, invalid pin?"); - return; - } - - mraa_gpio_dir(m_gpioA, MRAA_GPIO_IN); - - if ( !(m_gpioB = mraa_gpio_init(pinB)) ) - { - throw std::invalid_argument(std::string(__FUNCTION__) + - ": mraa_gpio_init(pinB) failed, invalid pin?"); - return; - } - - mraa_gpio_dir(m_gpioB, MRAA_GPIO_IN); - - m_position = 0; - - // setup the ISR - - // We would prefer to use MRAA_GPIO_EDGE_BOTH for better resolution, - // but that does not appear to be supported - mraa_gpio_isr(m_gpioA, MRAA_GPIO_EDGE_RISING, - &signalAISR, this); -} - -RotaryEncoder::~RotaryEncoder() -{ - mraa_gpio_isr_exit(m_gpioA); - - mraa_gpio_close(m_gpioA); - mraa_gpio_close(m_gpioB); -} - -void RotaryEncoder::initPosition(int count) -{ - m_position = count; -} - -int RotaryEncoder::position() -{ - return m_position; -} - -void RotaryEncoder::signalAISR(void *ctx) -{ - upm::RotaryEncoder *This = (upm::RotaryEncoder *)ctx; - - if (mraa_gpio_read(This->m_gpioA)) - { - if (mraa_gpio_read(This->m_gpioB)) - This->m_position++; // CW - else - This->m_position--; // CCW - } -} - - |