lorenzo cervelli / Mbed 2 deprecated DisplayTemperature_Max7219-Max6675_SD

A program to measure the temperature using the Max6675 board. The temperature is shown on 8x8 Max7219 matrix display and it is saved on SD as well.

Dependencies:   MAX7219 SDFileSystem mbed

Fork of MAXREFDES99_demo by Maxim Integrated

The program measures the temperature using the Max6675 board designed for Arduino. The temperature is shown on Max7219 8x8 matrix display (designed for Arduino as well) as text marque from right to left. The fonf size is 5x7 so the last row is used to show some info:

- All leds off: Normal temperature measuring - Leds shifting: Saving on SD card - Leds blinking: SD card missing or damaged

The Blue "user button" is used to save measured temperature on SD card. First click start saving, the second stop the process. Together the temperature is saved also the time. The time is reset when the process start. Connecting the USB to PC it's possible to see instant temperature and all saved data on SD.

main.cpp@3:41bdbc9b3cec, 2016-04-11 (annotated)

Committer:
pradipv
Date:
Mon Apr 11 16:19:13 2016 +0000
Revision:
3:41bdbc9b3cec
Parent:
0:6b0161c3e440
Child:
6:00aabe967e51
version 0.1, updated with 16x16 font data and code

Who changed what in which revision?

UserRevisionLine numberNew contents of line
j3 0:6b0161c3e440 1 /***********************************************************************
j3 0:6b0161c3e440 2 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
j3 0:6b0161c3e440 3 *
j3 0:6b0161c3e440 4 * Permission is hereby granted, free of charge, to any person obtaining a
j3 0:6b0161c3e440 5 * copy of this software and associated documentation files (the "Software"),
j3 0:6b0161c3e440 6 * to deal in the Software without restriction, including without limitation
j3 0:6b0161c3e440 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
j3 0:6b0161c3e440 8 * and/or sell copies of the Software, and to permit persons to whom the
j3 0:6b0161c3e440 9 * Software is furnished to do so, subject to the following conditions:
j3 0:6b0161c3e440 10 *
j3 0:6b0161c3e440 11 * The above copyright notice and this permission notice shall be included
j3 0:6b0161c3e440 12 * in all copies or substantial portions of the Software.
j3 0:6b0161c3e440 13 *
j3 0:6b0161c3e440 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
j3 0:6b0161c3e440 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
j3 0:6b0161c3e440 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
j3 0:6b0161c3e440 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
j3 0:6b0161c3e440 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
j3 0:6b0161c3e440 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
j3 0:6b0161c3e440 20 * OTHER DEALINGS IN THE SOFTWARE.
j3 0:6b0161c3e440 21 *
j3 0:6b0161c3e440 22 * Except as contained in this notice, the name of Maxim Integrated
j3 0:6b0161c3e440 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
j3 0:6b0161c3e440 24 * Products, Inc. Branding Policy.
j3 0:6b0161c3e440 25 *
j3 0:6b0161c3e440 26 * The mere transfer of this software does not imply any licenses
j3 0:6b0161c3e440 27 * of trade secrets, proprietary technology, copyrights, patents,
j3 0:6b0161c3e440 28 * trademarks, maskwork rights, or any other form of intellectual
j3 0:6b0161c3e440 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
j3 0:6b0161c3e440 30 * ownership rights.
j3 0:6b0161c3e440 31 **********************************************************************/
j3 0:6b0161c3e440 32
j3 0:6b0161c3e440 33 #include "maxrefdes99.h"
j3 0:6b0161c3e440 34
j3 0:6b0161c3e440 35 int main(void)
j3 0:6b0161c3e440 36 {
j3 0:6b0161c3e440 37 Max7219 display(D11, D12, D13, D10);
j3 0:6b0161c3e440 38
j3 0:6b0161c3e440 39 //struct for holding MAX7219 configuration data
j3 0:6b0161c3e440 40 max7219_configuration_t display_config;
j3 0:6b0161c3e440 41
j3 0:6b0161c3e440 42 //configuration data
j3 0:6b0161c3e440 43 display_config.decode_mode = 0; //no BCD decode
j3 0:6b0161c3e440 44 display_config.intensity = 0x0F; //max intensity
j3 0:6b0161c3e440 45 display_config.scan_limit = 0x07; //scan all digits
j3 0:6b0161c3e440 46
j3 0:6b0161c3e440 47 //set number of MAX7219 devices being used
j3 0:6b0161c3e440 48 display.set_num_devices(4);
j3 0:6b0161c3e440 49
j3 0:6b0161c3e440 50 //config display
j3 0:6b0161c3e440 51 display.init_display(display_config);
j3 0:6b0161c3e440 52
j3 0:6b0161c3e440 53 //ensure all data registers are 0
j3 0:6b0161c3e440 54 display.display_all_off();
j3 0:6b0161c3e440 55
j3 0:6b0161c3e440 56 display.enable_display();
j3 0:6b0161c3e440 57
pradipv 3:41bdbc9b3cec 58 uint32_t user_input = 0,user_font = 0;
j3 0:6b0161c3e440 59 uint32_t shift_right;
j3 0:6b0161c3e440 60 char user_char;
j3 0:6b0161c3e440 61 char *p_str;
j3 0:6b0161c3e440 62
j3 0:6b0161c3e440 63 while(user_input != 9)
j3 0:6b0161c3e440 64 {
j3 0:6b0161c3e440 65 user_input = print_menu();
j3 0:6b0161c3e440 66
j3 0:6b0161c3e440 67 switch(user_input)
j3 0:6b0161c3e440 68 {
pradipv 3:41bdbc9b3cec 69
pradipv 3:41bdbc9b3cec 70 case 1:
pradipv 3:41bdbc9b3cec 71
pradipv 3:41bdbc9b3cec 72 user_font = get_user_input("\nPlease enter 0 to use 5x7 font or 1 to use 16x16 font: ", 1);
pradipv 3:41bdbc9b3cec 73 break;
pradipv 3:41bdbc9b3cec 74
pradipv 3:41bdbc9b3cec 75 case 2:
j3 0:6b0161c3e440 76
j3 0:6b0161c3e440 77 user_input = get_user_input("\nPlease enter a value from 0 to 15: ", 15);
j3 0:6b0161c3e440 78
j3 0:6b0161c3e440 79 printf("\nUpdating display configuration...\n");
j3 0:6b0161c3e440 80
j3 0:6b0161c3e440 81 display_config.intensity = user_input;
j3 0:6b0161c3e440 82
j3 0:6b0161c3e440 83 display.init_display(display_config);
j3 0:6b0161c3e440 84
j3 0:6b0161c3e440 85 //make sure is good for next loop
j3 0:6b0161c3e440 86 user_input = 0;
j3 0:6b0161c3e440 87
j3 0:6b0161c3e440 88 break;
j3 0:6b0161c3e440 89
pradipv 3:41bdbc9b3cec 90 case 3:
pradipv 3:41bdbc9b3cec 91
pradipv 3:41bdbc9b3cec 92 if(user_font==0)
pradipv 3:41bdbc9b3cec 93 user_input = get_user_input("\nPlease enter which position, 1 to 32: ", 32);
pradipv 3:41bdbc9b3cec 94
pradipv 3:41bdbc9b3cec 95 user_char = get_user_char("\nPlease enter an ASCII character from '0' (zero) to 'z' (0x7A): ");
j3 0:6b0161c3e440 96
pradipv 3:41bdbc9b3cec 97 if(user_font==0)
pradipv 3:41bdbc9b3cec 98 print_char(&display, user_input, user_char);
pradipv 3:41bdbc9b3cec 99 else if(user_font==1)
pradipv 3:41bdbc9b3cec 100 print_char_16x16(&display, 0, user_char);
pradipv 3:41bdbc9b3cec 101
j3 0:6b0161c3e440 102 //make sure is good for next loop
j3 0:6b0161c3e440 103 user_input = 0;
j3 0:6b0161c3e440 104
j3 0:6b0161c3e440 105 break;
j3 0:6b0161c3e440 106
pradipv 3:41bdbc9b3cec 107 case 4:
j3 0:6b0161c3e440 108
pradipv 3:41bdbc9b3cec 109 if(user_font==0)
j3 0:6b0161c3e440 110 user_input = get_user_input("\nPlease enter which position, 1 to 32: ", 32);
pradipv 3:41bdbc9b3cec 111
j3 0:6b0161c3e440 112 p_str = get_user_string("\nPlease enter a string less than 24 characters: ");
j3 0:6b0161c3e440 113
pradipv 3:41bdbc9b3cec 114 if(user_font==0)
pradipv 3:41bdbc9b3cec 115 print_string(&display, user_input, p_str);
pradipv 3:41bdbc9b3cec 116 else if(user_font==1)
pradipv 3:41bdbc9b3cec 117 print_string_16x16(&display,p_str);
pradipv 3:41bdbc9b3cec 118
j3 0:6b0161c3e440 119 //make sure is good for next loop
j3 0:6b0161c3e440 120 user_input = 0;
j3 0:6b0161c3e440 121
j3 0:6b0161c3e440 122 break;
j3 0:6b0161c3e440 123
pradipv 3:41bdbc9b3cec 124 case 5:
j3 0:6b0161c3e440 125
pradipv 3:41bdbc9b3cec 126 if(user_font==0)
pradipv 3:41bdbc9b3cec 127 user_input = get_user_input("\nPlease enter number of shifts, 1 to 32: ", 32);
pradipv 3:41bdbc9b3cec 128 else if(user_font==1)
pradipv 3:41bdbc9b3cec 129 user_input = get_user_input("\nPlease enter number of shifts, 1 to 96: ", 96);
pradipv 3:41bdbc9b3cec 130
pradipv 3:41bdbc9b3cec 131 shift_right = get_user_input("\nWhich direction? 0 for left, 1 for right: ", 1);
j3 0:6b0161c3e440 132
j3 0:6b0161c3e440 133 if(shift_right)
j3 0:6b0161c3e440 134 {
j3 0:6b0161c3e440 135 printf("\nShifting Display Right %d positions\n", user_input);
pradipv 3:41bdbc9b3cec 136 if(user_font==0)
pradipv 3:41bdbc9b3cec 137 shift_display_right(&display, user_input, 100);
pradipv 3:41bdbc9b3cec 138 else if(user_font==1)
pradipv 3:41bdbc9b3cec 139 shift_display_right_16x16(&display, user_input, 100);
j3 0:6b0161c3e440 140 }
j3 0:6b0161c3e440 141 else
j3 0:6b0161c3e440 142 {
j3 0:6b0161c3e440 143 printf("\nShifting Display Left %d positions\n", user_input);
pradipv 3:41bdbc9b3cec 144 if(user_font==0)
pradipv 3:41bdbc9b3cec 145 shift_display_left(&display, user_input, 100);
pradipv 3:41bdbc9b3cec 146 else if(user_font==1)
pradipv 3:41bdbc9b3cec 147 shift_display_left_16x16(&display, user_input, 100);
pradipv 3:41bdbc9b3cec 148
j3 0:6b0161c3e440 149 }
j3 0:6b0161c3e440 150
j3 0:6b0161c3e440 151 break;
j3 0:6b0161c3e440 152
pradipv 3:41bdbc9b3cec 153 case 6:
j3 0:6b0161c3e440 154
j3 0:6b0161c3e440 155 all_off(&display);
j3 0:6b0161c3e440 156
j3 0:6b0161c3e440 157 break;
j3 0:6b0161c3e440 158
pradipv 3:41bdbc9b3cec 159 case 7:
j3 0:6b0161c3e440 160
j3 0:6b0161c3e440 161 printf("\nRunning Demo\n");
pradipv 3:41bdbc9b3cec 162 if(user_font==0)
j3 0:6b0161c3e440 163 demo(&display, display_config, false);
pradipv 3:41bdbc9b3cec 164 else if(user_font==1)
pradipv 3:41bdbc9b3cec 165 demo_16x16(&display, display_config, false);
j3 0:6b0161c3e440 166
j3 0:6b0161c3e440 167 break;
pradipv 3:41bdbc9b3cec 168
j3 0:6b0161c3e440 169 case 8:
j3 0:6b0161c3e440 170
j3 0:6b0161c3e440 171 //blocking case, endless loop
pradipv 3:41bdbc9b3cec 172 shift_right = get_user_input("\nWhich direction? 0 for left, 1 for right: ", 1);
pradipv 3:41bdbc9b3cec 173 if(user_font==0)
j3 0:6b0161c3e440 174 endless_scroll_display(&display, shift_right);
pradipv 3:41bdbc9b3cec 175 else if(user_font==1)
pradipv 3:41bdbc9b3cec 176 endless_scroll_display_16x16(&display, shift_right);
j3 0:6b0161c3e440 177
j3 0:6b0161c3e440 178 break;
j3 0:6b0161c3e440 179
j3 0:6b0161c3e440 180 case 9:
pradipv 3:41bdbc9b3cec 181 printf("\nEnding Program\n");
j3 0:6b0161c3e440 182 break;
j3 0:6b0161c3e440 183
j3 0:6b0161c3e440 184 default:
j3 0:6b0161c3e440 185 printf("\nInvalid entry, please try again\n");
j3 0:6b0161c3e440 186 break;
j3 0:6b0161c3e440 187 }
j3 0:6b0161c3e440 188 }
j3 0:6b0161c3e440 189
j3 0:6b0161c3e440 190 return 0;
j3 0:6b0161c3e440 191 }
pradipv 3:41bdbc9b3cec 192