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      1 /*
      2  * Author: Alexander Komarov <alexander.komarov (at) 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/gpio.h>
     28 #include <mraa/aio.h>
     29 #include <pthread.h>
     30 
     31 namespace upm {
     32 
     33 #define LOL_X 14
     34 #define LOL_Y 9
     35 
     36 /**
     37  * @brief Olimex LoL Array library
     38  * @defgroup lol libupm-lol
     39  * @ingroup adafruit gpio display
     40  */
     41 
     42 /**
     43  * @library lol
     44  * @sensor lol
     45  * @comname Olimex LoL Array
     46  * @type display
     47  * @man adafruit
     48  * @con gpio
     49  *
     50  * @brief API for the Olimex LoL array
     51  *
     52  * This module defines the LoL API and implementation for a simple framebuffer.
     53  *
     54  * @image html lolshield.jpg
     55  * @snippet lol-example.cxx Interesting
     56  */
     57 class LoL {
     58     public:
     59         /**
     60          * Instantiates an LoL object
     61          * singleton
     62          */
     63         LoL();
     64 
     65         /**
     66          * LoL object destructor
     67          */
     68         ~LoL();
     69 
     70         /**
     71          * Gets a framebuffer pointer
     72          * @return 0 if successful
     73          */
     74         unsigned char *getFramebuffer();
     75 
     76         /**
     77          * Gets a pixel at specified coordinates
     78          * @param x Coordinate x
     79          * @param y Coordinate y
     80          * @return 1 if the pixel is on, 0 if off, -1 on error
     81          */
     82         unsigned char getPixel(int x, int y);
     83 
     84         /**
     85          * Sets a pixel at specified coordinates
     86          * @param x Coordinate x
     87          * @param y Coordinate y
     88          * @param pixel 0 is off, 1 is on
     89          * @return 0 if successful, -1 on error
     90          */
     91         unsigned char setPixel(int x, int y, unsigned char pixel);
     92 
     93     private:
     94         mraa_gpio_context m_LoLCtx[14];
     95         unsigned char framebuffer[LOL_X*LOL_Y];
     96         pthread_t drawer_thread;
     97 };
     98 };
     99 
    100