Basic code for the Pi Swarm Table Controller
Dependencies: mbed
Fork of Programmable_IR_Beacon by
Code for the Pi Swarm Table Controller (PCB 1.0)
display.cpp@4:3cbff30b7b7b, 2014-07-18 (annotated)
- Committer:
- hee502
- Date:
- Fri Jul 18 21:23:37 2014 +0000
- Revision:
- 4:3cbff30b7b7b
- Parent:
- 0:d88fd55a27a6
Meme project code for table controller
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jah128 | 0:d88fd55a27a6 | 1 | /* University of York Robotics Laboratory MBED Library |
jah128 | 0:d88fd55a27a6 | 2 | * Display Driver for Midas I2C 2x16 Display |
jah128 | 0:d88fd55a27a6 | 3 | * Part number MCCOG21605-D6W-BNMLWI |
jah128 | 0:d88fd55a27a6 | 4 | * Rapid Electronics Cat Number 57-2340 [or 57-2334] |
jah128 | 0:d88fd55a27a6 | 5 | * Farnell Cat Number 2063206 [or 2063205] |
jah128 | 0:d88fd55a27a6 | 6 | * |
jah128 | 0:d88fd55a27a6 | 7 | * File: display.cpp |
jah128 | 0:d88fd55a27a6 | 8 | * |
jah128 | 0:d88fd55a27a6 | 9 | * (C) Dr James Hilder, Dept. Electronics & Computer Science, University of York |
jah128 | 0:d88fd55a27a6 | 10 | * |
jah128 | 0:d88fd55a27a6 | 11 | * October 2013 |
jah128 | 0:d88fd55a27a6 | 12 | * |
jah128 | 0:d88fd55a27a6 | 13 | */ |
jah128 | 0:d88fd55a27a6 | 14 | |
jah128 | 0:d88fd55a27a6 | 15 | #include "mbed.h" |
jah128 | 0:d88fd55a27a6 | 16 | #include "display.h" |
jah128 | 0:d88fd55a27a6 | 17 | |
jah128 | 0:d88fd55a27a6 | 18 | Display::Display(PinName sda, PinName scl, PinName reset) : Stream("display"), _i2c(sda,scl), _reset(reset) { |
jah128 | 0:d88fd55a27a6 | 19 | |
jah128 | 0:d88fd55a27a6 | 20 | } |
jah128 | 0:d88fd55a27a6 | 21 | |
jah128 | 0:d88fd55a27a6 | 22 | Display::Display() : Stream("display"), _i2c(p9,p10), _reset(p12) { |
jah128 | 0:d88fd55a27a6 | 23 | |
jah128 | 0:d88fd55a27a6 | 24 | } |
jah128 | 0:d88fd55a27a6 | 25 | |
jah128 | 0:d88fd55a27a6 | 26 | int Display::i2c_message(char byte){ |
jah128 | 0:d88fd55a27a6 | 27 | char bytes [2]; |
jah128 | 0:d88fd55a27a6 | 28 | bytes[0]=0x80; |
jah128 | 0:d88fd55a27a6 | 29 | bytes[1]=byte; |
jah128 | 0:d88fd55a27a6 | 30 | int ret=_i2c.write(LCD_ADDRESS,bytes,2); |
jah128 | 0:d88fd55a27a6 | 31 | wait(0.01); |
jah128 | 0:d88fd55a27a6 | 32 | return ret; |
jah128 | 0:d88fd55a27a6 | 33 | } |
jah128 | 0:d88fd55a27a6 | 34 | |
jah128 | 0:d88fd55a27a6 | 35 | int Display::disp_putc(int c){ |
jah128 | 0:d88fd55a27a6 | 36 | char message [2]; |
jah128 | 0:d88fd55a27a6 | 37 | message[0]=0x40; |
jah128 | 0:d88fd55a27a6 | 38 | message[1]=c; |
jah128 | 0:d88fd55a27a6 | 39 | _i2c.write(LCD_ADDRESS,message,2); |
jah128 | 0:d88fd55a27a6 | 40 | wait(0.01); |
jah128 | 0:d88fd55a27a6 | 41 | return c; |
jah128 | 0:d88fd55a27a6 | 42 | } |
jah128 | 0:d88fd55a27a6 | 43 | |
jah128 | 0:d88fd55a27a6 | 44 | |
jah128 | 0:d88fd55a27a6 | 45 | |
jah128 | 0:d88fd55a27a6 | 46 | void Display::init_display(){ |
jah128 | 0:d88fd55a27a6 | 47 | //Set initial states: display on, cursor off |
jah128 | 0:d88fd55a27a6 | 48 | display_on = 1; |
jah128 | 0:d88fd55a27a6 | 49 | cursor_on = 0; |
jah128 | 0:d88fd55a27a6 | 50 | blink_on = 0; |
jah128 | 0:d88fd55a27a6 | 51 | |
jah128 | 0:d88fd55a27a6 | 52 | _reset=1; |
jah128 | 0:d88fd55a27a6 | 53 | wait(0.02); |
jah128 | 0:d88fd55a27a6 | 54 | //Set reset low |
jah128 | 0:d88fd55a27a6 | 55 | _reset=0; |
jah128 | 0:d88fd55a27a6 | 56 | wait(0.001); |
jah128 | 0:d88fd55a27a6 | 57 | _reset=1; |
jah128 | 0:d88fd55a27a6 | 58 | wait(0.03); |
jah128 | 0:d88fd55a27a6 | 59 | i2c_message(0x38); |
jah128 | 0:d88fd55a27a6 | 60 | i2c_message(0x39); |
jah128 | 0:d88fd55a27a6 | 61 | i2c_message(0x14); |
jah128 | 0:d88fd55a27a6 | 62 | i2c_message(0x79); |
jah128 | 0:d88fd55a27a6 | 63 | i2c_message(0x50); |
jah128 | 0:d88fd55a27a6 | 64 | i2c_message(0x6c); |
jah128 | 0:d88fd55a27a6 | 65 | _set_display(); |
jah128 | 0:d88fd55a27a6 | 66 | clear_display(); |
jah128 | 0:d88fd55a27a6 | 67 | } |
jah128 | 0:d88fd55a27a6 | 68 | |
jah128 | 0:d88fd55a27a6 | 69 | void Display::write_string(char * message, char length){ |
jah128 | 0:d88fd55a27a6 | 70 | char to_send [length+1]; |
jah128 | 0:d88fd55a27a6 | 71 | to_send[0]=0x40; |
jah128 | 0:d88fd55a27a6 | 72 | for(int i=0;i<length;i++){ |
jah128 | 0:d88fd55a27a6 | 73 | to_send[i+1] = message[i]; |
jah128 | 0:d88fd55a27a6 | 74 | } |
jah128 | 0:d88fd55a27a6 | 75 | _i2c.write(LCD_ADDRESS,to_send,length+1); |
jah128 | 0:d88fd55a27a6 | 76 | } |
jah128 | 0:d88fd55a27a6 | 77 | |
jah128 | 0:d88fd55a27a6 | 78 | void Display::set_position(char row, char column){ |
jah128 | 0:d88fd55a27a6 | 79 | if(row < 2 && column < 16){ |
jah128 | 0:d88fd55a27a6 | 80 | char pos = 128 +((row * 64)+column); |
jah128 | 0:d88fd55a27a6 | 81 | i2c_message(pos); |
jah128 | 0:d88fd55a27a6 | 82 | } |
jah128 | 0:d88fd55a27a6 | 83 | } |
jah128 | 0:d88fd55a27a6 | 84 | |
jah128 | 0:d88fd55a27a6 | 85 | void Display::set_cursor(char enable){ |
jah128 | 0:d88fd55a27a6 | 86 | cursor_on=enable; |
jah128 | 0:d88fd55a27a6 | 87 | _set_display(); |
jah128 | 0:d88fd55a27a6 | 88 | } |
jah128 | 0:d88fd55a27a6 | 89 | |
jah128 | 0:d88fd55a27a6 | 90 | void Display::set_blink(char enable){ |
jah128 | 0:d88fd55a27a6 | 91 | blink_on=enable; |
jah128 | 0:d88fd55a27a6 | 92 | _set_display(); |
jah128 | 0:d88fd55a27a6 | 93 | } |
jah128 | 0:d88fd55a27a6 | 94 | |
jah128 | 0:d88fd55a27a6 | 95 | void Display::set_display(char enable){ |
jah128 | 0:d88fd55a27a6 | 96 | display_on=enable; |
jah128 | 0:d88fd55a27a6 | 97 | _set_display(); |
jah128 | 0:d88fd55a27a6 | 98 | } |
jah128 | 0:d88fd55a27a6 | 99 | |
jah128 | 0:d88fd55a27a6 | 100 | void Display::clear_display(){ |
jah128 | 0:d88fd55a27a6 | 101 | i2c_message(0x01); |
jah128 | 0:d88fd55a27a6 | 102 | } |
jah128 | 0:d88fd55a27a6 | 103 | |
jah128 | 0:d88fd55a27a6 | 104 | void Display::home(){ |
jah128 | 0:d88fd55a27a6 | 105 | i2c_message(0x02); |
jah128 | 0:d88fd55a27a6 | 106 | } |
jah128 | 0:d88fd55a27a6 | 107 | |
jah128 | 0:d88fd55a27a6 | 108 | |
jah128 | 0:d88fd55a27a6 | 109 | void Display::_set_display(){ |
jah128 | 0:d88fd55a27a6 | 110 | char mode = 8; |
jah128 | 0:d88fd55a27a6 | 111 | if(display_on>0) mode += 4; |
jah128 | 0:d88fd55a27a6 | 112 | if(cursor_on>0) mode += 2; |
jah128 | 0:d88fd55a27a6 | 113 | if(blink_on>0) mode ++; |
jah128 | 0:d88fd55a27a6 | 114 | i2c_message(mode); |
jah128 | 0:d88fd55a27a6 | 115 | } |
jah128 | 0:d88fd55a27a6 | 116 | |
jah128 | 0:d88fd55a27a6 | 117 | |
jah128 | 0:d88fd55a27a6 | 118 | int Display::_putc (int c) { |
jah128 | 0:d88fd55a27a6 | 119 | putc(c); |
jah128 | 0:d88fd55a27a6 | 120 | return(c); |
jah128 | 0:d88fd55a27a6 | 121 | } |
jah128 | 0:d88fd55a27a6 | 122 | |
jah128 | 0:d88fd55a27a6 | 123 | int Display::_getc (void) { |
jah128 | 0:d88fd55a27a6 | 124 | char r = 0; |
jah128 | 0:d88fd55a27a6 | 125 | return(r); |
jah128 | 0:d88fd55a27a6 | 126 | } |
jah128 | 0:d88fd55a27a6 | 127 | |
jah128 | 0:d88fd55a27a6 | 128 | |
jah128 | 0:d88fd55a27a6 | 129 | /* Permission is hereby granted, free of charge, to any person obtaining a copy |
jah128 | 0:d88fd55a27a6 | 130 | * of this software and associated documentation files (the "Software"), to deal |
jah128 | 0:d88fd55a27a6 | 131 | * in the Software without restriction, including without limitation the rights |
jah128 | 0:d88fd55a27a6 | 132 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
jah128 | 0:d88fd55a27a6 | 133 | * copies of the Software, and to permit persons to whom the Software is |
jah128 | 0:d88fd55a27a6 | 134 | * furnished to do so, subject to the following conditions: |
jah128 | 0:d88fd55a27a6 | 135 | * |
jah128 | 0:d88fd55a27a6 | 136 | * The above copyright notice and this permission notice shall be included in |
jah128 | 0:d88fd55a27a6 | 137 | * all copies or substantial portions of the Software. |
jah128 | 0:d88fd55a27a6 | 138 | * |
jah128 | 0:d88fd55a27a6 | 139 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
jah128 | 0:d88fd55a27a6 | 140 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
jah128 | 0:d88fd55a27a6 | 141 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
jah128 | 0:d88fd55a27a6 | 142 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
jah128 | 0:d88fd55a27a6 | 143 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
jah128 | 0:d88fd55a27a6 | 144 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
jah128 | 0:d88fd55a27a6 | 145 | * THE SOFTWARE. |
jah128 | 0:d88fd55a27a6 | 146 | */ |