Handheld controller (RF) for Pi Swarm system
Fork of Pi_Swarm_Handheld_Controller by
display.cpp@0:d63a63feb104, 2014-06-10 (annotated)
- Committer:
- jah128
- Date:
- Tue Jun 10 11:05:23 2014 +0000
- Revision:
- 0:d63a63feb104
Handheld controller for Pi Swarm (old code)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jah128 | 0:d63a63feb104 | 1 | /* University of York Robotics Laboratory MBED Library: Display Driver |
jah128 | 0:d63a63feb104 | 2 | * |
jah128 | 0:d63a63feb104 | 3 | * File: display.cpp |
jah128 | 0:d63a63feb104 | 4 | * |
jah128 | 0:d63a63feb104 | 5 | * (C) Dr James Hilder, Dept. Electronics & Computer Science, University of York |
jah128 | 0:d63a63feb104 | 6 | * |
jah128 | 0:d63a63feb104 | 7 | * October 2013 |
jah128 | 0:d63a63feb104 | 8 | * |
jah128 | 0:d63a63feb104 | 9 | * Driver for the Midas 20x4 I2C LCD Display (MCCOG42005A6W-BNMLWI) LCD |
jah128 | 0:d63a63feb104 | 10 | * |
jah128 | 0:d63a63feb104 | 11 | * Farnell part 2218946 |
jah128 | 0:d63a63feb104 | 12 | * |
jah128 | 0:d63a63feb104 | 13 | */ |
jah128 | 0:d63a63feb104 | 14 | |
jah128 | 0:d63a63feb104 | 15 | #include "mbed.h" |
jah128 | 0:d63a63feb104 | 16 | #include "display.h" |
jah128 | 0:d63a63feb104 | 17 | |
jah128 | 0:d63a63feb104 | 18 | Display::Display(PinName sda, PinName scl, PinName reset) : Stream("display"), _i2c(sda,scl), _reset(reset) { |
jah128 | 0:d63a63feb104 | 19 | |
jah128 | 0:d63a63feb104 | 20 | } |
jah128 | 0:d63a63feb104 | 21 | |
jah128 | 0:d63a63feb104 | 22 | Display::Display() : Stream("display"), _i2c(p9,p10), _reset(p12) { |
jah128 | 0:d63a63feb104 | 23 | |
jah128 | 0:d63a63feb104 | 24 | } |
jah128 | 0:d63a63feb104 | 25 | |
jah128 | 0:d63a63feb104 | 26 | int Display::i2c_message(char byte){ |
jah128 | 0:d63a63feb104 | 27 | char bytes [2]; |
jah128 | 0:d63a63feb104 | 28 | bytes[0]=0x80; |
jah128 | 0:d63a63feb104 | 29 | bytes[1]=byte; |
jah128 | 0:d63a63feb104 | 30 | return _i2c.write(LCD_ADDRESS,bytes,2); |
jah128 | 0:d63a63feb104 | 31 | } |
jah128 | 0:d63a63feb104 | 32 | |
jah128 | 0:d63a63feb104 | 33 | int Display::disp_putc(int c){ |
jah128 | 0:d63a63feb104 | 34 | char message [2]; |
jah128 | 0:d63a63feb104 | 35 | message[0]=0x40; |
jah128 | 0:d63a63feb104 | 36 | message[1]=c; |
jah128 | 0:d63a63feb104 | 37 | _i2c.write(LCD_ADDRESS,message,2); |
jah128 | 0:d63a63feb104 | 38 | return c; |
jah128 | 0:d63a63feb104 | 39 | } |
jah128 | 0:d63a63feb104 | 40 | |
jah128 | 0:d63a63feb104 | 41 | |
jah128 | 0:d63a63feb104 | 42 | |
jah128 | 0:d63a63feb104 | 43 | void Display::init_display(){ |
jah128 | 0:d63a63feb104 | 44 | //Set initial states: display on, cursor off |
jah128 | 0:d63a63feb104 | 45 | display_on = 1; |
jah128 | 0:d63a63feb104 | 46 | cursor_on = 1; |
jah128 | 0:d63a63feb104 | 47 | blink_on = 1; |
jah128 | 0:d63a63feb104 | 48 | |
jah128 | 0:d63a63feb104 | 49 | _reset=1; |
jah128 | 0:d63a63feb104 | 50 | wait(0.02); |
jah128 | 0:d63a63feb104 | 51 | //Set reset low |
jah128 | 0:d63a63feb104 | 52 | _reset=0; |
jah128 | 0:d63a63feb104 | 53 | wait(0.001); |
jah128 | 0:d63a63feb104 | 54 | _reset=1; |
jah128 | 0:d63a63feb104 | 55 | wait(0.03); |
jah128 | 0:d63a63feb104 | 56 | i2c_message(0x3a); |
jah128 | 0:d63a63feb104 | 57 | i2c_message(0x1e); |
jah128 | 0:d63a63feb104 | 58 | i2c_message(0x39); |
jah128 | 0:d63a63feb104 | 59 | i2c_message(0x1c); |
jah128 | 0:d63a63feb104 | 60 | i2c_message(0x79); |
jah128 | 0:d63a63feb104 | 61 | i2c_message(0x5d); |
jah128 | 0:d63a63feb104 | 62 | i2c_message(0x6d); |
jah128 | 0:d63a63feb104 | 63 | _set_display(); |
jah128 | 0:d63a63feb104 | 64 | clear_display(); |
jah128 | 0:d63a63feb104 | 65 | } |
jah128 | 0:d63a63feb104 | 66 | |
jah128 | 0:d63a63feb104 | 67 | void Display::write_string(char * message, char length){ |
jah128 | 0:d63a63feb104 | 68 | char to_send [length+1]; |
jah128 | 0:d63a63feb104 | 69 | to_send[0]=0x40; |
jah128 | 0:d63a63feb104 | 70 | for(int i=0;i<length;i++){ |
jah128 | 0:d63a63feb104 | 71 | to_send[i+1] = message[i]; |
jah128 | 0:d63a63feb104 | 72 | } |
jah128 | 0:d63a63feb104 | 73 | _i2c.write(LCD_ADDRESS,to_send,length+1); |
jah128 | 0:d63a63feb104 | 74 | } |
jah128 | 0:d63a63feb104 | 75 | |
jah128 | 0:d63a63feb104 | 76 | void Display::set_position(char row, char column){ |
jah128 | 0:d63a63feb104 | 77 | if(row < 4 && column < 20){ |
jah128 | 0:d63a63feb104 | 78 | char pos = 128 +((row * 32)+column); |
jah128 | 0:d63a63feb104 | 79 | i2c_message(pos); |
jah128 | 0:d63a63feb104 | 80 | } |
jah128 | 0:d63a63feb104 | 81 | } |
jah128 | 0:d63a63feb104 | 82 | |
jah128 | 0:d63a63feb104 | 83 | void Display::set_cursor(char enable){ |
jah128 | 0:d63a63feb104 | 84 | cursor_on=enable; |
jah128 | 0:d63a63feb104 | 85 | _set_display(); |
jah128 | 0:d63a63feb104 | 86 | } |
jah128 | 0:d63a63feb104 | 87 | |
jah128 | 0:d63a63feb104 | 88 | void Display::set_blink(char enable){ |
jah128 | 0:d63a63feb104 | 89 | blink_on=enable; |
jah128 | 0:d63a63feb104 | 90 | _set_display(); |
jah128 | 0:d63a63feb104 | 91 | } |
jah128 | 0:d63a63feb104 | 92 | |
jah128 | 0:d63a63feb104 | 93 | void Display::set_display(char enable){ |
jah128 | 0:d63a63feb104 | 94 | display_on=enable; |
jah128 | 0:d63a63feb104 | 95 | _set_display(); |
jah128 | 0:d63a63feb104 | 96 | } |
jah128 | 0:d63a63feb104 | 97 | |
jah128 | 0:d63a63feb104 | 98 | void Display::clear_display(){ |
jah128 | 0:d63a63feb104 | 99 | i2c_message(0x01); |
jah128 | 0:d63a63feb104 | 100 | } |
jah128 | 0:d63a63feb104 | 101 | |
jah128 | 0:d63a63feb104 | 102 | void Display::home(){ |
jah128 | 0:d63a63feb104 | 103 | i2c_message(0x02); |
jah128 | 0:d63a63feb104 | 104 | } |
jah128 | 0:d63a63feb104 | 105 | |
jah128 | 0:d63a63feb104 | 106 | |
jah128 | 0:d63a63feb104 | 107 | void Display::_set_display(){ |
jah128 | 0:d63a63feb104 | 108 | char mode = 8; |
jah128 | 0:d63a63feb104 | 109 | if(display_on>0) mode += 4; |
jah128 | 0:d63a63feb104 | 110 | if(cursor_on>0) mode += 2; |
jah128 | 0:d63a63feb104 | 111 | if(blink_on>0) mode ++; |
jah128 | 0:d63a63feb104 | 112 | i2c_message(mode); |
jah128 | 0:d63a63feb104 | 113 | } |
jah128 | 0:d63a63feb104 | 114 | |
jah128 | 0:d63a63feb104 | 115 | |
jah128 | 0:d63a63feb104 | 116 | int Display::_putc (int c) { |
jah128 | 0:d63a63feb104 | 117 | disp_putc(c); |
jah128 | 0:d63a63feb104 | 118 | return(c); |
jah128 | 0:d63a63feb104 | 119 | } |
jah128 | 0:d63a63feb104 | 120 | |
jah128 | 0:d63a63feb104 | 121 | int Display::_getc (void) { |
jah128 | 0:d63a63feb104 | 122 | char r = 0; |
jah128 | 0:d63a63feb104 | 123 | return(r); |
jah128 | 0:d63a63feb104 | 124 | } |
jah128 | 0:d63a63feb104 | 125 | |
jah128 | 0:d63a63feb104 | 126 | |
jah128 | 0:d63a63feb104 | 127 | /* Permission is hereby granted, free of charge, to any person obtaining a copy |
jah128 | 0:d63a63feb104 | 128 | * of this software and associated documentation files (the "Software"), to deal |
jah128 | 0:d63a63feb104 | 129 | * in the Software without restriction, including without limitation the rights |
jah128 | 0:d63a63feb104 | 130 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
jah128 | 0:d63a63feb104 | 131 | * copies of the Software, and to permit persons to whom the Software is |
jah128 | 0:d63a63feb104 | 132 | * furnished to do so, subject to the following conditions: |
jah128 | 0:d63a63feb104 | 133 | * |
jah128 | 0:d63a63feb104 | 134 | * The above copyright notice and this permission notice shall be included in |
jah128 | 0:d63a63feb104 | 135 | * all copies or substantial portions of the Software. |
jah128 | 0:d63a63feb104 | 136 | * |
jah128 | 0:d63a63feb104 | 137 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
jah128 | 0:d63a63feb104 | 138 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
jah128 | 0:d63a63feb104 | 139 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
jah128 | 0:d63a63feb104 | 140 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
jah128 | 0:d63a63feb104 | 141 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
jah128 | 0:d63a63feb104 | 142 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
jah128 | 0:d63a63feb104 | 143 | * THE SOFTWARE. |
jah128 | 0:d63a63feb104 | 144 | */ |