create and send the file to pc
Dependencies: MCP23017 WattBob_TextLCD mbed
Fork of HelloWorld by
main.cpp
- Committer:
- haseo1989
- Date:
- 2014-03-04
- Revision:
- 7:0c36c40f2ffd
- Parent:
- 6:94ee12962e13
File content as of revision 7:0c36c40f2ffd:
#include "mbed.h" #include "MCP23017.h" // include 16-bit parallel I/O header file #include "WattBob_TextLCD.h" // include 2*16 character display header file #define BACK_LIGHT_ON(INTERFACE) INTERFACE->write_bit(1,BL_BIT) #define BACK_LIGHT_OFF(INTERFACE) INTERFACE->write_bit(0,BL_BIT) DigitalIn IP_wave(p5); //input of the square wave,1s DigitalIn DIP_SW1(p6); //digital input ,switch1,400ms DigitalIn DIP_SW2(p7); //switch2,400ms AnalogIn AIP_1(p19); //Analog input1800ms AnalogIn AIP_2(p20); //AIP 2800ms DigitalOut bit4(LED1); //each bits of led DigitalOut bit3(LED2); DigitalOut bit2(LED3); DigitalOut bit1(LED4); int S_wave,switch1,switch2 = 0; //check the value of square wave, switches float Anal_val1[4],Anal_val2[4] = {0,0,0,0}; //for calculating the values of analog inputs int freq = 0; // frequency of the wave float aver_anl1,aver_anl2 = 0; //average values of analog inputs int ero_code = 0; // error code int flag_task3 = 0; //flag for task3 int run_task = 0; //if run_task = 1,running led int led_show = 0; //led blinksing in incremental ways MCP23017 *par_port; // pointer to 16-bit parallel I/O object WattBob_TextLCD *lcd; // pointer to 2*16 chacater LCD object Timer tmr; //define a timer for calculating the frequency Timer Tcheck; //define a timer for testing whether task1 is overtime of not LocalFileSystem local("local"); //Create the local filesystem under the name "local" FILE *fp; //define a file void iniLCD() //initial LCD { par_port = new MCP23017(p9, p10, 0x40); // initialise 16-bit I/O chip lcd = new WattBob_TextLCD(par_port); // initialise 2*26 char display par_port->write_bit(1,BL_BIT); // turn LCD backlight ON lcd->cls(); lcd->locate(0,0); } void iniFile() //create file { fp = fopen("/local/data.txt", "w"); // Open "data.txt" on the local file system for writing fprintf(fp,"freqency, Digital value, Analog value1, Analog value2\n"); fclose(fp); } void T1_checkWave() //get the frequency of the wave,works { float tm_val1,tm_val2 = 0; int flag,flag_err = 0; Tcheck.reset(); //to check wether the testing is over time or not Tcheck.start(); while(IP_wave) { tm_val2 = Tcheck.read(); flag = tm_val2*1000; if(flag >= 10) //if the signal keeps hi in 20ms , it will end testing. the flag_err will be set one { flag_err = 1; break; } } while( !IP_wave ) { tm_val2 = Tcheck.read(); flag = tm_val2*1000; if((flag >= 20) || flag_err == 1) //if the signal keeps low in 50ms , it will end testing. { flag_err = 1; break; } } Tcheck.stop(); if( flag_err == 0 ) { tmr.reset(); tmr.start(); while( IP_wave ) { } tmr.stop(); tm_val1 = tmr.read_us(); } if( tm_val1 > 500.0 ) //if impulse last more than 500us, it will get its frequency freq = 500000/tm_val1; //the frenquency of the wave else freq = 0; } void T2_checkSW() //check the SWes per 400ms,works { if( DIP_SW1 != 0 ) switch1 = 1; else switch1 = 0; if( DIP_SW2 !=0 ) switch2 = 1; else switch2 = 0; } void T3_checkAIP() //get the values of analog inputs per 800MS { float para1,para2; Anal_val1[flag_task3] = AIP_1.read(); Anal_val2[flag_task3] = AIP_2.read(); flag_task3++; flag_task3 = flag_task3%4; para1 = (Anal_val1[0] + Anal_val1[1] + Anal_val1[2] + Anal_val1[3])*3.3; //filt the values para2 = (Anal_val2[0] + Anal_val2[1] + Anal_val2[2] + Anal_val2[3])*3.3; aver_anl1 = para1/4; aver_anl2 = para2/4; } void T4_display() //dispaly each values per 2s { int aver_show; /* get frequency from task 1 */ // frequency is freq /* get digital value from task2 */ /* digital number = {switch1,switch2} */ /* get average value from task3,show integers */ //data type of aver_anl1,aver_anl2 are float aver_show = (aver_anl1+aver_anl2)/2; /* get error code from task5 */ // ero_code /* show them!! */ lcd->cls(); lcd->locate(0,0); lcd->printf("F=%d Aval=%d",freq,aver_show); lcd->locate(1,0); lcd->printf("Dval=%d%d ErC=%d",switch2,switch1,ero_code); } void T5_SWtask() //check the values of switches and run the task , set error code per 1.8s { if((switch1 == 1) && (aver_anl1 > aver_anl2)) ero_code = 3; else ero_code = 0; //error code if(switch2 == 1) run_task = 1; else run_task = 0; } void RunLed() //blink led 1.5s { led_show = led_show%16; int num_led = led_show; if(num_led > 7) {num_led = num_led - 8; bit4 = 1; } else bit4 = 0; if(num_led > 3) {num_led = num_led - 4; bit3 = 1;} else bit3 = 0; if(num_led > 1) {num_led = num_led - 2; bit2 = 1;} else bit2 = 0; bit1 = num_led; led_show++; } void T6_saveData() //save data in uSD; { fp = fopen("/local/data.txt", "a"); //open file and add data into the file fprintf(fp,"%d, _%d%d, %f, %f\n",freq,switch2,switch1,aver_anl1,aver_anl2); fclose(fp); //close file } int main() { iniLCD(); iniFile(); int tick = 0; lcd->printf("Initializing!"); while(1) { wait(0.1); tick++; if(tick%50 == 0) T6_saveData(); if(tick%20 == 0) T4_display(); if(tick%18 == 0) T5_SWtask(); if((tick%15 == 0) && (run_task ==1 )) RunLed(); if(tick%10 == 0) T1_checkWave(); if(tick%8 == 0) T3_checkAIP(); if(tick%4 == 0) T2_checkSW(); if(tick == 1800) tick = 1; } return 0; }