1 /* 2 * Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com> 3 * Copyright (c) 2014 Intel Corporation. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be 14 * included in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 #pragma once 25 26 #include <string> 27 #include <mraa/aio.hpp> 28 #include <mraa/common.hpp> 29 30 #include <mraa/gpio.hpp> 31 32 #define MAX_BIT_PER_BLOCK 16 33 #define CMDMODE 0x0000 34 #define BIT_HIGH 0x00ff 35 #define BIT_LOW 0x0000 36 37 #define HIGH 1 38 #define LOW 0 39 40 namespace upm { 41 42 /** 43 * @brief MY9221 LED Bar library 44 * @defgroup my9221 libupm-my9221 45 * @ingroup seeed display gpio eak 46 */ 47 /** 48 * @library my9221 49 * @sensor my9221 50 * @comname Grove LED Bar 51 * @altname MY9221 LED Bar 52 * @type display 53 * @man seeed 54 * @web http://www.seeedstudio.com/wiki/Grove_-_LED_Bar 55 * @con gpio 56 * @kit eak 57 * 58 * @brief API for MY9221-based LED Bars 59 * 60 * This module defines the MY9221 interface for libmy9221 61 * 62 * @image html my9221.jpg 63 * @snippet my9221-ledbar.cxx Interesting 64 * @snippet my9221-updown.cxx Interesting 65 */ 66 class MY9221 { 67 public: 68 /** 69 * Instantiates an MY9221 object 70 * 71 * @param di Data pin 72 * @param dcki Clock pin 73 */ 74 MY9221 (uint8_t di, uint8_t dcki); 75 76 /** 77 * Sets the bar level 78 * 79 * @param level Selected level for the bar (1 - 10) 80 * @param direction Up or down; up is true and default 81 */ 82 mraa::Result setBarLevel (uint8_t level, bool direction=true); 83 84 /** 85 * Returns the name of the component 86 */ name()87 std::string name() 88 { 89 return m_name; 90 } 91 private: 92 mraa::Result lockData (); 93 mraa::Result send16bitBlock (short data); 94 95 std::string m_name; 96 mraa::Gpio m_clkPinCtx; 97 mraa::Gpio m_dataPinCtx; 98 }; 99 100 } 101