Aditya Barve / Mbed 2 deprecated image_zooming

This is a code which generates the various zoomed versions of an image stored in an SD card and displays it on a Nokia LCD based on the keys pressed on a capacitive touch pad.

Dependencies:   FatFileSystem mbed

Fork of Lab3 by Martin Sturm

main.cpp@1:6048138606a0, 2012-10-11 (annotated)

Committer:
abarve9
Date:
Thu Oct 11 06:10:31 2012 +0000
Revision:
1:6048138606a0
Parent:
0:c546b51ecf0b 
This is an image zooming program which reads an image stored in an SD card and displays the various zoomed versions of the image based on the key pressed in the capacitive touch sensor.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
XkLi 0:c546b51ecf0b 1 #include "mbed.h"
XkLi 0:c546b51ecf0b 2 #include "SDFileSystem.h"
XkLi 0:c546b51ecf0b 3 #include "NokiaLCD.h"
XkLi 0:c546b51ecf0b 4 #include "myBMP.h"
XkLi 0:c546b51ecf0b 5 #include "mpr121.h"
XkLi 0:c546b51ecf0b 6 #include <string>
abarve9 1:6048138606a0 7 #include <vector>
XkLi 0:c546b51ecf0b 8 #include <cctype>
XkLi 0:c546b51ecf0b 9
XkLi 0:c546b51ecf0b 10 SDFileSystem sd(p5, p6, p7, p8, "sd");
XkLi 0:c546b51ecf0b 11 NokiaLCD lcd(p11, p13, p14, p15, NokiaLCD::LCD6610);
XkLi 0:c546b51ecf0b 12 I2C i2c(p9,p10);
abarve9 1:6048138606a0 13 Mpr121 touch(&i2c, Mpr121::ADD_VSS);
XkLi 0:c546b51ecf0b 14 Serial pc(USBTX,USBRX);
abarve9 1:6048138606a0 15 InterruptIn interrupt(p26);
abarve9 1:6048138606a0 16 DigitalOut led1(LED1);
abarve9 1:6048138606a0 17 vector<string> f;
XkLi 0:c546b51ecf0b 18 string file;
XkLi 0:c546b51ecf0b 19 int value;
abarve9 1:6048138606a0 20 bool zoom= false;
abarve9 1:6048138606a0 21 bool select_pic[12];
XkLi 0:c546b51ecf0b 22
abarve9 1:6048138606a0 23 void fallInterrupt()
abarve9 1:6048138606a0 24 { // Interrupt service routine to display the image according to the key pressed
abarve9 1:6048138606a0 25 value=touch.read(0x00);
abarve9 1:6048138606a0 26 value +=touch.read(0x01)<<8; // value of the key pressed is assigned to the variable 'value'
XkLi 0:c546b51ecf0b 27
abarve9 1:6048138606a0 28 pc.printf("%d\r\n",value);
abarve9 1:6048138606a0 29 switch (value) {
abarve9 1:6048138606a0 30 case 0:
abarve9 1:6048138606a0 31 break;
XkLi 0:c546b51ecf0b 32
abarve9 1:6048138606a0 33 case 1: {
abarve9 1:6048138606a0 34 select_pic[0] = true;
abarve9 1:6048138606a0 35 zoom = true;
abarve9 1:6048138606a0 36 break;
abarve9 1:6048138606a0 37 }
abarve9 1:6048138606a0 38 case 2: {
abarve9 1:6048138606a0 39 select_pic[3] = true;
abarve9 1:6048138606a0 40 zoom = true;
abarve9 1:6048138606a0 41 break;
abarve9 1:6048138606a0 42 }
abarve9 1:6048138606a0 43 case 4: {
abarve9 1:6048138606a0 44 select_pic[5] = true;
abarve9 1:6048138606a0 45 zoom = true;
XkLi 0:c546b51ecf0b 46 break;
abarve9 1:6048138606a0 47 }
abarve9 1:6048138606a0 48 case 8: {
abarve9 1:6048138606a0 49 select_pic[2] = true;
abarve9 1:6048138606a0 50 zoom = true;
XkLi 0:c546b51ecf0b 51 break;
abarve9 1:6048138606a0 52 }
abarve9 1:6048138606a0 53 case 16: {
abarve9 1:6048138606a0 54 select_pic[1] = true;
abarve9 1:6048138606a0 55 zoom = true;
XkLi 0:c546b51ecf0b 56 break;
abarve9 1:6048138606a0 57 }
abarve9 1:6048138606a0 58 case 32: {
abarve9 1:6048138606a0 59 select_pic[4] = true;
abarve9 1:6048138606a0 60 zoom = true;
XkLi 0:c546b51ecf0b 61 break;
abarve9 1:6048138606a0 62 }
XkLi 0:c546b51ecf0b 63
XkLi 0:c546b51ecf0b 64 default:
XkLi 0:c546b51ecf0b 65
XkLi 0:c546b51ecf0b 66 break;
abarve9 1:6048138606a0 67 }
XkLi 0:c546b51ecf0b 68
XkLi 0:c546b51ecf0b 69 }
XkLi 0:c546b51ecf0b 70
abarve9 1:6048138606a0 71 void open_dir(char *dir)
abarve9 1:6048138606a0 72 { // Opening the SD card directory and pushing the files into the directory
XkLi 0:c546b51ecf0b 73 DIR *dp;
XkLi 0:c546b51ecf0b 74 struct dirent *dirp;
XkLi 0:c546b51ecf0b 75 dp = opendir(dir);
abarve9 1:6048138606a0 76 while((dirp = readdir(dp)) != NULL) {
abarve9 1:6048138606a0 77 f.push_back(string(dirp->d_name));
XkLi 0:c546b51ecf0b 78 }
XkLi 0:c546b51ecf0b 79 }
XkLi 0:c546b51ecf0b 80
abarve9 1:6048138606a0 81 int main()
abarve9 1:6048138606a0 82 {
abarve9 1:6048138606a0 83
XkLi 0:c546b51ecf0b 84 interrupt.fall(&fallInterrupt);
XkLi 0:c546b51ecf0b 85 interrupt.mode(PullUp);
XkLi 0:c546b51ecf0b 86 lcd.background(0xFFFFFF);
XkLi 0:c546b51ecf0b 87 lcd.foreground(0xFFFFFF);
XkLi 0:c546b51ecf0b 88 lcd.cls();
abarve9 1:6048138606a0 89 open_dir("/sd");
XkLi 0:c546b51ecf0b 90 led1 = 1;
abarve9 1:6048138606a0 91
XkLi 0:c546b51ecf0b 92 while(1) {
abarve9 1:6048138606a0 93
abarve9 1:6048138606a0 94 if(zoom) {
XkLi 0:c546b51ecf0b 95 __disable_irq();
abarve9 1:6048138606a0 96 for(int i =0; i <f.size(); i++) {
abarve9 1:6048138606a0 97 if (select_pic[i] == true) {
abarve9 1:6048138606a0 98 file = f[i];
abarve9 1:6048138606a0 99 select_pic[i] = false;
abarve9 1:6048138606a0 100 }
XkLi 0:c546b51ecf0b 101 }
abarve9 1:6048138606a0 102
abarve9 1:6048138606a0 103 RGBApixel *Colors = new RGBApixel [2];
abarve9 1:6048138606a0 104 file = "/sd/" + file;
abarve9 1:6048138606a0 105 lcd.background(0x000000);
abarve9 1:6048138606a0 106 lcd.foreground(0x000000);
abarve9 1:6048138606a0 107 lcd.cls();
abarve9 1:6048138606a0 108 ReadBMPFromFile(file.c_str(), Colors, &lcd); // Function to display image on the nokia LCD. Refer myBMP.cpp for complete functionality.
abarve9 1:6048138606a0 109
abarve9 1:6048138606a0 110
abarve9 1:6048138606a0 111 zoom = false;
XkLi 0:c546b51ecf0b 112 __enable_irq();
XkLi 0:c546b51ecf0b 113 }
abarve9 1:6048138606a0 114
XkLi 0:c546b51ecf0b 115 led1 = !led1;
abarve9 1:6048138606a0 116 wait(0.2);
XkLi 0:c546b51ecf0b 117 }
XkLi 0:c546b51ecf0b 118 }