Hendrik Lipka / LcdWindow

Display text on LCD displays (even on multiple ones). Allow to create windows (frames) on display, and to combine them (split, add, duplicate, scroll). See http://mbed.org/users/hlipka/notebook/lcdwindow/ for more information.

Dependents:   Mbell

dogm_spi.cpp@9:2fe93daa2106, 2011-02-22 (annotated)

Committer:
hlipka
Date:
Tue Feb 22 22:57:44 2011 +0000
Revision:
9:2fe93daa2106
Parent:
3:e5d5e2fe4bf6 
fixed semaphore handling - should now be really thread safe (can be called from interrupts)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hlipka 0:ae5037e3d6e0 1 /*
hlipka 0:ae5037e3d6e0 2 * mbed LCDWindow library
hlipka 0:ae5037e3d6e0 3 * Copyright (c) 2010 Hendrik Lipka
hlipka 0:ae5037e3d6e0 4 *
hlipka 0:ae5037e3d6e0 5 * Permission is hereby granted, free of charge, to any person obtaining a copy
hlipka 0:ae5037e3d6e0 6 * of this software and associated documentation files (the "Software"), to deal
hlipka 0:ae5037e3d6e0 7 * in the Software without restriction, including without limitation the rights
hlipka 0:ae5037e3d6e0 8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
hlipka 0:ae5037e3d6e0 9 * copies of the Software, and to permit persons to whom the Software is
hlipka 0:ae5037e3d6e0 10 * furnished to do so, subject to the following conditions:
hlipka 0:ae5037e3d6e0 11 *
hlipka 0:ae5037e3d6e0 12 * The above copyright notice and this permission notice shall be included in
hlipka 0:ae5037e3d6e0 13 * all copies or substantial portions of the Software.
hlipka 0:ae5037e3d6e0 14 *
hlipka 0:ae5037e3d6e0 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
hlipka 0:ae5037e3d6e0 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
hlipka 0:ae5037e3d6e0 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
hlipka 0:ae5037e3d6e0 18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
hlipka 0:ae5037e3d6e0 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
hlipka 0:ae5037e3d6e0 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
hlipka 0:ae5037e3d6e0 21 * THE SOFTWARE.
hlipka 0:ae5037e3d6e0 22 */
hlipka 0:ae5037e3d6e0 23
hlipka 0:ae5037e3d6e0 24 #include "dogm_spi.h"
hlipka 0:ae5037e3d6e0 25
hlipka 0:ae5037e3d6e0 26 #include "SPI.h"
hlipka 0:ae5037e3d6e0 27 #include "DigitalOut.h"
hlipka 0:ae5037e3d6e0 28 #include "wait_api.h"
hlipka 0:ae5037e3d6e0 29
hlipka 0:ae5037e3d6e0 30 DogmLCDSPI::DogmLCDSPI
hlipka 2:5ac5bab7daaf 31 (unsigned int columns, unsigned int rows, SPI *spi, PinName enable, PinName rs)
hlipka 2:5ac5bab7daaf 32 :SPILCDBase(columns,rows,spi,enable,rs)
hlipka 0:ae5037e3d6e0 33 {
hlipka 0:ae5037e3d6e0 34 }
hlipka 0:ae5037e3d6e0 35
hlipka 0:ae5037e3d6e0 36 void DogmLCDSPI::init()
hlipka 0:ae5037e3d6e0 37 {
hlipka 0:ae5037e3d6e0 38 unsigned char initCmd[10]={0x38,0x39,0x14,0x55,0x6d,0x78,0x38,0x0c,0x01,0x06};
hlipka 0:ae5037e3d6e0 39
hlipka 0:ae5037e3d6e0 40 _enable->write(1);
hlipka 0:ae5037e3d6e0 41 wait_ms(80);
hlipka 0:ae5037e3d6e0 42
hlipka 0:ae5037e3d6e0 43 for (int i=0;i<sizeof(initCmd);i++)
hlipka 0:ae5037e3d6e0 44 {
hlipka 0:ae5037e3d6e0 45 sendCmd(initCmd[i]);
hlipka 0:ae5037e3d6e0 46 wait_ms(4);
hlipka 0:ae5037e3d6e0 47 }
hlipka 0:ae5037e3d6e0 48 }
hlipka 0:ae5037e3d6e0 49
hlipka 2:5ac5bab7daaf 50 void DogmLCDSPI::character(int column, int row, int c)
hlipka 0:ae5037e3d6e0 51 {
hlipka 2:5ac5bab7daaf 52 int address=(row)*0x40+(column);
hlipka 9:2fe93daa2106 53 if (!_guard->take())
hlipka 9:2fe93daa2106 54 return;
hlipka 2:5ac5bab7daaf 55 sendCmd((char)address|0x80);
hlipka 2:5ac5bab7daaf 56 wait_ms(1);
hlipka 2:5ac5bab7daaf 57 sendData(c);
hlipka 3:e5d5e2fe4bf6 58 _guard->release();
hlipka 2:5ac5bab7daaf 59 wait_ms(1);
hlipka 2:5ac5bab7daaf 60 }
hlipka 2:5ac5bab7daaf 61
hlipka 2:5ac5bab7daaf 62 void DogmLCDSPI::writeText(const unsigned int column, const unsigned int row, const char text[])
hlipka 2:5ac5bab7daaf 63 {
hlipka 2:5ac5bab7daaf 64 int address=(row)*0x40+(column);
hlipka 9:2fe93daa2106 65 if (!_guard->take())
hlipka 9:2fe93daa2106 66 return;
hlipka 0:ae5037e3d6e0 67 sendCmd((char)address|0x80);
hlipka 0:ae5037e3d6e0 68 wait_ms(1);
hlipka 0:ae5037e3d6e0 69
hlipka 0:ae5037e3d6e0 70 int i=0;
hlipka 0:ae5037e3d6e0 71 while(text[i]!=0)
hlipka 0:ae5037e3d6e0 72 {
hlipka 0:ae5037e3d6e0 73 sendData(text[i]);
hlipka 0:ae5037e3d6e0 74 wait_ms(1);
hlipka 0:ae5037e3d6e0 75 i++;
hlipka 0:ae5037e3d6e0 76 }
hlipka 3:e5d5e2fe4bf6 77 _guard->release();
hlipka 0:ae5037e3d6e0 78 }
hlipka 0:ae5037e3d6e0 79
hlipka 0:ae5037e3d6e0 80 void DogmLCDSPI::clear()
hlipka 0:ae5037e3d6e0 81 {
hlipka 9:2fe93daa2106 82 if (!_guard->take())
hlipka 9:2fe93daa2106 83 return;
hlipka 0:ae5037e3d6e0 84 sendCmd(1);
hlipka 3:e5d5e2fe4bf6 85 _guard->release();
hlipka 0:ae5037e3d6e0 86 }
hlipka 0:ae5037e3d6e0 87