main.cpp

00001 #include "mbed.h"
00002 #include "TextLCD.h"
00003 
00004 //#include "MAX6662.h"
00005 // Create the local filesystem under the name "local"
00006 
00007 LocalFileSystem local("local");
00008 TextLCD lcd(p24, p25, p26, p27, p28, p29, p30); // rs, rw, e, d0, d1, d2, d3
00009 DigitalOut led1(LED1);
00010 DigitalOut led2(LED2);
00011 DigitalOut led3(LED3);
00012 DigitalIn button(p12);
00013 
00014 AnalogIn grx(p16);  // gyroscope x-axis
00015 AnalogIn gry(p17);  // gyroscope y-axis
00016 AnalogIn acx(p18);  // accelerometer x-axis
00017 AnalogIn acy(p19);  // accelerometer y-axis
00018 AnalogIn acz(p20);  // accelerometer z-axis
00019 
00020 
00021 
00022 char direct[]= "local";
00023 char file[20];
00024 char next_file[20];
00025 int file_no;
00026 int count;
00027 bool not_found;
00028 bool check;
00029 
00030 //*********************************************
00031 //sub for filename search
00032 bool exists(char * root, char *filename) {
00033 
00034     DIR *d;
00035     struct dirent *p;
00036     d = opendir("/local");
00037 
00038     //printf("\nList of files in the directory %s:\n", root);
00039     bool found = false;
00040     if ( d != NULL ) {
00041         while ( !found && (p = readdir(d)) != NULL ) {
00042             //printf(" - %s\n", p->d_name);
00043             if ( strcmp(p->d_name, filename) == 0 )
00044                 found = true;
00045         }
00046     }
00047     closedir(d);
00048     not_found=!found;
00049     return found;
00050 }
00051 
00052 //*********************************************
00053 
00054 // this routine could check the last number of file it is
00055 // last file _no = file_no - 1;
00056 
00057 //not_found=false; // intial
00058 
00059 
00060 //*********************************************
00061 //sub to search for filename
00062 int search( void ) {
00063 
00064     not_found=false;
00065     led1=button;
00066     file_no=1;
00067     count=0;
00068 
00069     while (not_found==false) {
00070         sprintf(file, "TEMP%d.CSV", file_no);
00071 //        wait(.1);
00072         if ( exists(direct, file) ) {
00073           
00074            // lcd.cls();
00075             //lcd.locate(0,0);
00076             //lcd.printf("Found %s",file);
00077         } else {
00078 
00079             lcd.cls();
00080             //lcd.locate(0,0);
00081             lcd.printf("Not %s", file);
00082         }
00083         file_no++;
00084        // lcd.locate(0,1);
00085         //lcd.printf("%d", file_no-1);
00086     }
00087     check=1;
00088     led2=check;
00089     return file_no;
00090 }
00091 
00092 //***************************************************
00093 
00094 //**************************************************
00095 //sub to delay input button
00096 //avoid bouncing effect
00097 
00098 int button_delay(bool b) {
00099     bool c = false;
00100     if (b==true) {
00101         wait(.5);
00102         c=true;
00103     } else {
00104         c=false;
00105     }
00106     return c;
00107 }
00108 
00109 //*******************************************************
00110 //main program start here
00111 
00112 bool sw;
00113 int no;
00114 
00115 int main() {
00116 
00117     while (1) {
00118 
00119 
00120         sw=button_delay(button);
00121         led1=sw;
00122 
00123         if (sw == false and no == 0) {
00124             led3=1;
00125             no=search();
00126             lcd.locate(0,1);
00127             lcd.printf("it is %d", no-1);
00128             sprintf(next_file, "/local/temp%d.csv", file_no-1);
00129         }
00130 
00131 
00132         if (sw == true and no != 0) {
00133             no=0;
00134             led3=0;
00135 
00136             FILE *fp = fopen(next_file, "w");
00137             //while (button) {
00138             while (button_delay(button)) {
00139                 led2 = !led2;
00140                 // time,data<cr>
00141                 fprintf(fp,"%.2f,%.2f,%.2f,%.2f,%.2f\n",grx.read()*3.3, gry.read()*3.3,acx.read()*3.3,acy.read()*3.3,acz.read()*3.3);
00142                 //pc.printf("%f,%f,%f\n",acx.read(),acy.read(),acz.read());
00143                 lcd.locate(0,0);
00144                 lcd.printf("gx=%.2f,gy=%.2f",grx.read()*3.3, gry.read()*3.3);
00145                 //lcd.printf("%.2f", f);
00146                 lcd.locate(0,1);
00147                 lcd.printf("ax=%.2f,ay=%.2f,az=%.2f",acx.read()*3.3,acy.read()*3.3,acz.read()*3.3);
00148                 wait (.01);
00149             }
00150             fclose(fp);
00151            // lcd.cls();
00152             //lcd.locate(0,0);
00153             ///lcd.printf("Press button to start");
00154            // wait(.1);
00155         }
00156     }
00157 }
00158 
00159 
00160