Kian Sek Tee / Mbed 2 deprecated datalogger_Ain2

simple data logger writing to internal RAM. No existing over-written. search for next file count

Dependencies:   mbed

main.cpp@0:8d245bbd9c2b, 2010-02-26 (annotated)

Committer:
teekiansek
Date:
Fri Feb 26 18:20:58 2010 +0000
Revision:
0:8d245bbd9c2b

        

        
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#include "mbed.h"





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#include "TextLCD.h"





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//#include "MAX6662.h"





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// Create the local filesystem under the name "local"





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LocalFileSystem local("local");





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TextLCD lcd(p24, p25, p26, p27, p28, p29, p30); // rs, rw, e, d0, d1, d2, d3





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DigitalOut led1(LED1);





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DigitalOut led2(LED2);





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DigitalOut led3(LED3);





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DigitalIn button(p12);





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AnalogIn grx(p16);  // gyroscope x-axis





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AnalogIn gry(p17);  // gyroscope y-axis





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AnalogIn acx(p18);  // accelerometer x-axis





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AnalogIn acy(p19);  // accelerometer y-axis





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AnalogIn acz(p20);  // accelerometer z-axis





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char direct[]= "local";





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char file[20];





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char next_file[20];





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int file_no;





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int count;





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bool not_found;





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bool check;





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//*********************************************





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//sub for filename search





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bool exists(char * root, char *filename) {





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    DIR *d;





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    struct dirent *p;





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    d = opendir("/local");





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    //printf("\nList of files in the directory %s:\n", root);





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    bool found = false;





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    if ( d != NULL ) {





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        while ( !found && (p = readdir(d)) != NULL ) {





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            //printf(" - %s\n", p->d_name);





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            if ( strcmp(p->d_name, filename) == 0 )





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                found = true;





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        }





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    }





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    closedir(d);





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    not_found=!found;





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    return found;





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}





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//*********************************************





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// this routine could check the last number of file it is





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// last file _no = file_no - 1;





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//not_found=false; // intial





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//*********************************************





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//sub to search for filename





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int search( void ) {





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    not_found=false;





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    led1=button;





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    file_no=1;





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    count=0;





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    while (not_found==false) {





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        sprintf(file, "TEMP%d.CSV", file_no);





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//        wait(.1);





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        if ( exists(direct, file) ) {





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           // lcd.cls();





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            //lcd.locate(0,0);





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            //lcd.printf("Found %s",file);





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        } else {





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            lcd.cls();





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            //lcd.locate(0,0);





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            lcd.printf("Not %s", file);





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        }





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        file_no++;





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       // lcd.locate(0,1);





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        //lcd.printf("%d", file_no-1);





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    }





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    check=1;





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    led2=check;





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    return file_no;





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}





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//***************************************************





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//**************************************************





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//sub to delay input button





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//avoid bouncing effect





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int button_delay(bool b) {





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    bool c = false;





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    if (b==true) {





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        wait(.5);





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        c=true;





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    } else {





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        c=false;





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    }





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    return c;





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}





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//*******************************************************





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//main program start here





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bool sw;





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int no;





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int main() {





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    while (1) {





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        sw=button_delay(button);





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        led1=sw;





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        if (sw == false and no == 0) {





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            led3=1;





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            no=search();





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            lcd.locate(0,1);





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            lcd.printf("it is %d", no-1);





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            sprintf(next_file, "/local/temp%d.csv", file_no-1);





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        }





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        if (sw == true and no != 0) {





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            no=0;





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            led3=0;





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            FILE *fp = fopen(next_file, "w");





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            //while (button) {





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            while (button_delay(button)) {





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                led2 = !led2;





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                // time,data<cr>





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                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);





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                //pc.printf("%f,%f,%f\n",acx.read(),acy.read(),acz.read());





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                lcd.locate(0,0);





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                lcd.printf("gx=%.2f,gy=%.2f",grx.read()*3.3, gry.read()*3.3);





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                //lcd.printf("%.2f", f);





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                lcd.locate(0,1);





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                lcd.printf("ax=%.2f,ay=%.2f,az=%.2f",acx.read()*3.3,acy.read()*3.3,acz.read()*3.3);





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                wait (.01);





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            }





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            fclose(fp);





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           // lcd.cls();





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            //lcd.locate(0,0);





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            ///lcd.printf("Press button to start");





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           // wait(.1);





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        }





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    }





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}





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