diff options
Diffstat (limited to 'peripheral/libupm/src/my9221/my9221.cxx')
| -rw-r--r-- | peripheral/libupm/src/my9221/my9221.cxx | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/peripheral/libupm/src/my9221/my9221.cxx b/peripheral/libupm/src/my9221/my9221.cxx deleted file mode 100644 index a5df3fb..0000000 --- a/peripheral/libupm/src/my9221/my9221.cxx +++ /dev/null @@ -1,191 +0,0 @@ -/* - * Author: Jon Trulson <jtrulson@ics.com> - * Copyright (c) 2016 Intel Corporation. - * - * These modules were rewritten, based on original work by: - * - * (original my9221/groveledbar driver) - * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com> - * Copyright (c) 2014 Intel Corporation. - * - * (grovecircularled driver) - * Author: Jun Kato and Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com> - * Contributions: Jon Trulson <jtrulson@ics.com> - * Copyright (c) 2014 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 <unistd.h> -#include <stdlib.h> - -#include "my9221.h" - -using namespace upm; -using namespace std; - -MY9221::MY9221 (uint8_t dataPin, uint8_t clockPin, int instances) - : m_gpioData(dataPin), m_gpioClk(clockPin), m_bitStates(0) -{ - if (instances < 1) - { - throw std::out_of_range(std::string(__FUNCTION__) + - ": instances must be at least 1"); - } - - // set directions - m_gpioClk.dir(mraa::DIR_OUT); - m_gpioData.dir(mraa::DIR_OUT); - - // we warn if these fail, since it may not be possible to handle - // more than one instance - - if (m_gpioClk.useMmap(true) != mraa::SUCCESS) - cerr << __FUNCTION__ - << ": Warning: mmap of Clk pin failed, correct operation " - << "may be affected." - << endl; - - if (m_gpioData.useMmap(true) != mraa::SUCCESS) - cerr << __FUNCTION__ - << ": Warning: mmap of Data pin failed, correct operation " - << "may be affected." - << endl; - - setLowIntensityValue(0x00); // full off - setHighIntensityValue(0xff); // full brightness - - m_commandWord = 0x0000; // all defaults - m_instances = instances; - - m_bitStates = new uint16_t[instances * LEDS_PER_INSTANCE]; - - setAutoRefresh(true); - clearAll(); -} - -MY9221::~MY9221() -{ - clearAll(); - - if (!m_autoRefresh) - refresh(); - - delete m_bitStates; -} - -void MY9221::setLED(int led, bool on) -{ - int maxLed = (LEDS_PER_INSTANCE * m_instances) - 1; - - if (led > maxLed) - led = maxLed; - if (led < 0) - led = 0; - - m_bitStates[led] = (on) ? m_highIntensity : m_lowIntensity; - - if (m_autoRefresh) - refresh(); -} - -void MY9221::setLowIntensityValue(int intensity) -{ - m_lowIntensity = (intensity & 0xff); -} - -void MY9221::setHighIntensityValue(int intensity) -{ - m_highIntensity = (intensity & 0xff); -} - -void MY9221::setAll() -{ - for (int i=0; i<(m_instances * LEDS_PER_INSTANCE); i++) - m_bitStates[i] = m_highIntensity; - - if (m_autoRefresh) - refresh(); -} - -void MY9221::clearAll() -{ - for (int i=0; i<(m_instances * LEDS_PER_INSTANCE); i++) - m_bitStates[i] = m_lowIntensity; - - if (m_autoRefresh) - refresh(); -} - -void MY9221::refresh() -{ - for (int i=0; i<(m_instances * LEDS_PER_INSTANCE); i++) - { - if (i % 12 == 0) - { - send16bitBlock(m_commandWord); - } - send16bitBlock(m_bitStates[i]); - } - - lockData(); -} - -void MY9221::lockData() -{ - m_gpioData.write(0); - usleep(220); - - for(int idx = 0; idx < 4; idx++) - { - m_gpioData.write(1); - m_gpioData.write(0); - } - - // in reality, we only need > 200ns + (m_instances * 10ns), so the - // following should be good for up to m_instances < 80), if the - // datasheet is to be believed :) - usleep(1); - - return; -} - -void MY9221::send16bitBlock(uint16_t data) -{ - for (uint8_t bit_idx = 0; bit_idx < 16; bit_idx++) - { - uint32_t state = (data & 0x8000) ? 1 : 0; - m_gpioData.write(state); - state = m_gpioClk.read(); - - if (state) - state = 0; - else - state = 1; - - m_gpioClk.write(state); - - data <<= 1; - } - return; -} |