Diff: main.cpp

Revision:

0:c546b51ecf0b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Oct 11 01:24:18 2011 +0000
@@ -0,0 +1,186 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+#include "NokiaLCD.h"
+#include "myBMP.h"
+#include "mpr121.h"
+#include "jpegutil.h"
+#include <string>
+#include <cctype>
+
+SDFileSystem sd(p5, p6, p7, p8, "sd");
+NokiaLCD lcd(p11, p13, p14, p15, NokiaLCD::LCD6610);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut led3(LED3);
+DigitalOut led4(LED4);
+InterruptIn interrupt(p26);
+I2C i2c(p9,p10);
+Mpr121 mpr121(&i2c, Mpr121::ADD_VSS);
+Serial pc(USBTX,USBRX);
+vector<string> files;
+string file;
+int selectpos = 1;
+int oldvalue;
+int value;
+bool showingImage = false;
+bool displayImage = false;
+
+
+string toLower(string in)
+{
+    for(int i = 0; i < in.length(); i++)
+    {
+        in[i] = tolower(in[i]);
+    }
+    return in;
+}
+
+void changepos(int val2,int val1){ //compares the current position with the old one andchanges currsor accordingly.
+//val1 is the lower value ond val2 th higher possibla value
+
+if (!showingImage) {
+                if (oldvalue==val1) {
+                    if (selectpos != 1)
+                    selectpos--;
+                    // if (selectpos < 1)selectpos = files.size(); // no more raparround
+                } else if(oldvalue==val2){
+                    if (selectpos != files.size())
+                    selectpos++;
+                    //if (selectpos > files.size()) selectpos = 1; // no more raparound
+                }
+            }
+}
+
+void fallInterrupt() {
+    value=mpr121.read(0x00);
+    value +=mpr121.read(0x01)<<8;
+    //pc.printf("%d\r\n",value);
+    switch (value) {
+        case 0: //no button is pressed (good only to execute actions on release)
+                switch (oldvalue) { //if not do action according to button realeased.
+                    case (1<<4):
+                        if (showingImage) {
+                            lcd.background(0xFFFFFF);
+                            lcd.foreground(0xFFFFFF);
+                            lcd.cls();
+                            showingImage = false;
+                        }
+                        break;
+
+                    case (1<<5):
+                        if (!showingImage) {
+                            displayImage = true;
+                            showingImage = true;
+                        }
+                        break;
+                
+            }
+            case 1:
+            changepos(-1,3); //cannot have a lower value as 0 i no button
+            break;
+        case 3:
+            changepos(1,2);
+            break;
+        case 2:
+            changepos((2+1),(2+4));
+            break;
+        case (2+4):
+            changepos(2,4);
+            break;
+        case 4:
+            changepos((4+2),(4+8));
+            break;
+        case (4+8):
+            changepos(4,8);
+            break;
+        case 8:
+            changepos(4+8,-1); // cannot have a highe boundry
+            break;
+
+        default:
+
+            break;
+    };
+
+    oldvalue=value;
+}
+
+void ls(char *dir)
+{
+    DIR *dp;
+    struct dirent *dirp;
+    dp = opendir(dir);
+    while((dirp = readdir(dp)) != NULL)
+    {
+        files.push_back(string(dirp->d_name));
+    }
+}
+
+int main() {
+    interrupt.fall(&fallInterrupt);
+    interrupt.mode(PullUp);
+    
+    lcd.background(0xFFFFFF);
+    lcd.foreground(0xFFFFFF);
+    lcd.cls();
+    ls("/sd");
+    
+    led1 = 1;
+    
+    while(1) {
+        int ypos = 1;
+        if(displayImage)
+        {
+            __disable_irq();
+            file = files[selectpos - 1];
+            string ext = file.substr(file.rfind('.')+1);
+            ext = toLower(ext);
+            if(!ext.compare("bmp"))
+            {
+                RGBApixel *Colors = new RGBApixel [2];
+                file = "/sd/" + file;
+                lcd.background(0x000000);
+                lcd.foreground(0x000000);
+                lcd.cls();
+                ReadBMPFromFile(file.c_str(), Colors, &lcd);
+                showingImage = true;
+            }
+            else if(!ext.compare("jpeg") || !ext.compare("jpg"))
+            {
+                file = "/sd/" + file;
+                lcd.background(0x000000);
+                lcd.foreground(0x000000);
+                lcd.cls();
+                ReadJPEGFromFile(file.c_str(), &lcd);
+                showingImage = true;
+            }
+            else
+            {
+                showingImage = false;
+            }
+            displayImage = false;
+            __enable_irq();
+        }
+        if(!showingImage)
+        {
+            lcd.background(0xFFFFFF);
+            lcd.locate(0,ypos);
+            for(vector<string>::iterator it=files.begin(); it < files.end(); it++)
+            {
+                if(ypos == selectpos)
+                {
+                    lcd.foreground(0xFF0000);
+                }
+                else
+                {
+                    lcd.foreground(0x000000);
+                }
+                lcd.printf("%s",(*it).c_str());
+                ypos++;
+                lcd.locate(0,ypos);
+            }
+        }
+        led1 = !led1;
+        wait(0.05);
+    }
+}