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@8:a6a0c9e280ae, 2016-05-24 (annotated)

Committer:
pradipv
Date:
Tue May 24 08:40:07 2016 +0000
Revision:
8:a6a0c9e280ae
Parent:
7:4b81ed6da6ab
Child:
12:1bd4a9f09a8d
version1.2 - Updated with code cleanup

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 **********************************************************************/
pradipv 8:a6a0c9e280ae 32 #include "maxrefdes99.h"
j3 0:6b0161c3e440 33
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;
pradipv 8:a6a0c9e280ae 41
j3 0:6b0161c3e440 42 //configuration data
j3 0:6b0161c3e440 43 display_config.decode_mode = 0; //no BCD decode
pradipv 8:a6a0c9e280ae 44 display_config.intensity = Max7219::MAX7219_INTENSITY_F; //max intensity
pradipv 8:a6a0c9e280ae 45 display_config.scan_limit = Max7219::MAX7219_SCAN_8; //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 8:a6a0c9e280ae 69 case 1:
pradipv 8:a6a0c9e280ae 70 printf("\n 0: For 5x7 font");
pradipv 8:a6a0c9e280ae 71 printf("\n 1: For 16x16 Aerial bold font");
pradipv 8:a6a0c9e280ae 72 printf("\n 2: For 16x16 Manual font");
pradipv 8:a6a0c9e280ae 73 user_font = get_user_input("\nPlease select font: ", 2);
pradipv 8:a6a0c9e280ae 74 if((user_font == 1) || (user_font == 2))
pradipv 8:a6a0c9e280ae 75 printf("\nNote:Position option works only for 5x7 font\n");
pradipv 8:a6a0c9e280ae 76 break;
pradipv 3:41bdbc9b3cec 77 case 2:
pradipv 8:a6a0c9e280ae 78 user_input = get_user_input("\nPlease enter a value from 0 to 15: ", 15);
pradipv 8:a6a0c9e280ae 79 printf("\nUpdating display configuration...\n");
pradipv 8:a6a0c9e280ae 80 display_config.intensity = user_input;
pradipv 8:a6a0c9e280ae 81 display.init_display(display_config);
pradipv 8:a6a0c9e280ae 82 //make sure is good for next loop
pradipv 8:a6a0c9e280ae 83 user_input = 0;
pradipv 8:a6a0c9e280ae 84 break;
pradipv 8:a6a0c9e280ae 85 case 3:
pradipv 8:a6a0c9e280ae 86 if(user_font == 0)
pradipv 8:a6a0c9e280ae 87 user_input = get_user_input("\nPlease enter which position, 1 to 32: ", 32);
pradipv 8:a6a0c9e280ae 88 user_char = get_user_char("\nPlease enter an ASCII character from '0' (zero) to 'z' (0x7A): ");
pradipv 8:a6a0c9e280ae 89 if(user_font == 0)
pradipv 8:a6a0c9e280ae 90 print_char(&display, user_input, user_char);
pradipv 8:a6a0c9e280ae 91 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 92 print_char_16x16(&display, 0, user_char, user_font);
pradipv 8:a6a0c9e280ae 93 //make sure is good for next loop
pradipv 8:a6a0c9e280ae 94 user_input = 0;
pradipv 8:a6a0c9e280ae 95 break;
pradipv 3:41bdbc9b3cec 96 case 4:
pradipv 8:a6a0c9e280ae 97 if(user_font == 0)
pradipv 8:a6a0c9e280ae 98 user_input = get_user_input("\nPlease enter which position 1 to 32: ", 32);
pradipv 8:a6a0c9e280ae 99 p_str = get_user_string("\nPlease enter a string less than 24 characters: ");
pradipv 8:a6a0c9e280ae 100 if(user_font == 0)
pradipv 8:a6a0c9e280ae 101 print_string(&display, user_input, p_str);
pradipv 8:a6a0c9e280ae 102 else if(user_font >=1)
pradipv 8:a6a0c9e280ae 103 print_string_16x16(&display, p_str, user_font);
pradipv 8:a6a0c9e280ae 104 //make sure is good for next loop
pradipv 8:a6a0c9e280ae 105 user_input = 0;
pradipv 8:a6a0c9e280ae 106 break;
pradipv 3:41bdbc9b3cec 107 case 5:
pradipv 8:a6a0c9e280ae 108 if(user_font == 0)
pradipv 8:a6a0c9e280ae 109 user_input = get_user_input("\nPlease enter number of shifts, 1 to 32: ", 32);
pradipv 8:a6a0c9e280ae 110 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 111 user_input = get_user_input("\nPlease enter number of shifts, 1 to 96: ", 96);
pradipv 8:a6a0c9e280ae 112 shift_right = get_user_input("\nWhich direction? 0 for left, 1 for right: ", 1);
pradipv 8:a6a0c9e280ae 113 if(shift_right)
pradipv 8:a6a0c9e280ae 114 {
pradipv 8:a6a0c9e280ae 115 printf("\nShifting Display Right %d positions\n", user_input);
pradipv 8:a6a0c9e280ae 116 if(user_font == 0)
pradipv 8:a6a0c9e280ae 117 shift_display_right(&display, user_input, 100);
pradipv 8:a6a0c9e280ae 118 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 119 shift_display_right_16x16(&display, user_input, 100);
pradipv 8:a6a0c9e280ae 120 }
pradipv 8:a6a0c9e280ae 121 else
pradipv 8:a6a0c9e280ae 122 {
pradipv 8:a6a0c9e280ae 123 printf("\nShifting Display Left %d positions\n", user_input);
pradipv 8:a6a0c9e280ae 124 if(user_font == 0)
pradipv 8:a6a0c9e280ae 125 shift_display_left(&display, user_input, 100);
pradipv 8:a6a0c9e280ae 126 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 127 shift_display_left_16x16(&display, user_input, 100);
pradipv 8:a6a0c9e280ae 128 }
pradipv 8:a6a0c9e280ae 129 break;
pradipv 8:a6a0c9e280ae 130 case 6:
pradipv 8:a6a0c9e280ae 131 all_off(&display);
pradipv 8:a6a0c9e280ae 132 break;
pradipv 8:a6a0c9e280ae 133 case 7:
pradipv 8:a6a0c9e280ae 134 printf("\nRunning Demo\n");
pradipv 3:41bdbc9b3cec 135 if(user_font==0)
pradipv 8:a6a0c9e280ae 136 demo(&display, display_config, false);
pradipv 8:a6a0c9e280ae 137 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 138 demo_16x16(&display, display_config, user_font, false);
pradipv 8:a6a0c9e280ae 139 break;
j3 0:6b0161c3e440 140 case 8:
pradipv 8:a6a0c9e280ae 141 //blocking case, endless loop
pradipv 8:a6a0c9e280ae 142 shift_right = get_user_input("\nWhich direction? 0 for left, 1 for right: ", 1);
pradipv 8:a6a0c9e280ae 143 if(user_font == 0)
pradipv 8:a6a0c9e280ae 144 endless_scroll_display(&display, shift_right);
pradipv 8:a6a0c9e280ae 145 else if(user_font >= 1)
pradipv 8:a6a0c9e280ae 146 endless_scroll_display_16x16(&display, shift_right);
pradipv 8:a6a0c9e280ae 147 break;
j3 0:6b0161c3e440 148 case 9:
pradipv 8:a6a0c9e280ae 149 printf("\nEnding Program\n");
pradipv 8:a6a0c9e280ae 150 break;
j3 0:6b0161c3e440 151 default:
pradipv 8:a6a0c9e280ae 152 printf("\nInvalid entry, please try again\n");
pradipv 8:a6a0c9e280ae 153 break;
j3 0:6b0161c3e440 154 }
j3 0:6b0161c3e440 155 }
j3 0:6b0161c3e440 156 return 0;
j3 0:6b0161c3e440 157 }
pradipv 3:41bdbc9b3cec 158