My7SEG.cpp

00001 /**
00002  *****************************************************************************
00003  * File Name    : My7SEG.cpp
00004  *
00005  * Title        : ORGINAL I2C LCD Display Claass Source File
00006  * Revision     : 0.1
00007  * Notes        :
00008  * Target Board : mbed NXP LPC1768, mbed LPC1114FN28  etc
00009  * Tool Chain   : ????
00010  *
00011  * Revision History:
00012  * When         Who         Description of change
00013  * -----------  ----------- -----------------------
00014  * 2013/12/11   Hiroshi M   init
00015  *****************************************************************************
00016  *
00017  * Copyright (C) 2013 Hiroshi M, MIT License
00018  *
00019  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00020  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00021  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00022  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00023  * furnished to do so, subject to the following conditions:
00024  *
00025  * The above copyright notice and this permission notice shall be included in all copies or
00026  * substantial portions of the Software.
00027  *
00028  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00029  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00030  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00031  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00032  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00033  *
00034  **/
00035 
00036 /* Includes ----------------------------------------------------------------- */
00037 #include "mbed.h"
00038 #include "My7SEG.h"
00039 
00040 /* Private typedef ---------------------------------------------------------- */
00041 /* Private define ----------------------------------------------------------- */
00042 /* Private macro ------------------------------------------------------------ */
00043 /* Private variables -------------------------------------------------------- */
00044 /* member fanctions --------------------------------------------------------- */
00045 
00046 // Constractor
00047 My7SEG::My7SEG(I2C *i2c): _i2c(i2c)
00048 {
00049 }
00050 
00051 int My7SEG::writeBytes(const char *data, int length, bool repeated)
00052 {
00053     wait_us(i2c_bit_wait_us);
00054     _i2c->start();
00055 
00056     wait_us(i2c_bit_wait_us);
00057     if (_i2c->write(i2c_addr) != 1)
00058     {
00059         wait_us(i2c_bit_wait_us);
00060         _i2c->stop();
00061         return _i2cFAILURE;
00062     }
00063 
00064     for (int i = 0; i < length; i++)
00065     {
00066         wait_us(i2c_bit_wait_us);
00067         if (_i2c->write(data[i]) != 1)
00068         {
00069             wait_us(i2c_bit_wait_us);
00070             _i2c->stop();
00071             return _i2cFAILURE;
00072         }
00073     }
00074     if (!repeated)
00075     {
00076         wait_us(i2c_bit_wait_us);
00077         _i2c->stop();
00078     }
00079     return _i2cSUCCESS;
00080 }
00081 
00082 int My7SEG::clear(void)
00083 {
00084     char buff[2] = { ESC, 'C' };
00085 
00086     return writeBytes(buff, sizeof(buff));
00087 }
00088 
00089 int My7SEG::shift_left(void)
00090 {
00091     char buff[2] = { ESC, '<' };
00092 
00093     return writeBytes(buff, sizeof(buff));
00094 }
00095 
00096 int My7SEG::shift_right(void)
00097 {
00098     char buff[2] = { ESC, '>' };
00099 
00100     return writeBytes(buff, sizeof(buff));
00101 }
00102 
00103 int My7SEG::rotato_left(void)
00104 {
00105     char buff[2] = { ESC, '[' };
00106 
00107     return writeBytes(buff, sizeof(buff));
00108 }
00109 
00110 int My7SEG::rotato_right(void)
00111 {
00112     char buff[2] = { ESC, ']' };
00113 
00114     return writeBytes(buff, sizeof(buff));
00115 }
00116 
00117 // 一文字表示
00118 int My7SEG::printChar(char c)
00119 {
00120     return writeBytes(&c, 1);
00121 }
00122 
00123 int My7SEG::printPosChar(int pos, char chr)
00124 {
00125     char buff[4];
00126     
00127     if( pos < 0 && 7 < pos )
00128     {
00129         return _i2cFAILURE;
00130     }
00131     
00132     buff[0] = ESC;
00133     buff[1] = 'L';
00134     buff[2] = '0' + pos;
00135     buff[3] = chr;
00136 
00137     return writeBytes(buff, sizeof(buff));
00138 }
00139 
00140 int My7SEG::printStr(const char *s)
00141 {
00142     int ret;
00143     char c;
00144 
00145     ret = _i2cSUCCESS;
00146     while ((c = *s++)!=NULL)
00147     {
00148         ret = writeBytes(&c, 1);
00149         if (ret == _i2cFAILURE)
00150         {
00151             return ret;
00152         }
00153     }
00154 
00155     return ret;
00156 }
00157 
00158 ///////////////////////////////////////////////