File content as of revision 1:5b18ad9301f3:

#include "mbed.h"

AnalogIn in(A0);
AnalogOut out(PA_4);
DigitalOut led(LED1);
int main()
{
    printf("\n Vong lap Analog\n\r");
    printf("*** ket noi chan A0 va PA_4 voi nhau ***\n\r");
    while(1) {
        for (float out_value = 0.0f; out_value < 1.1f; out_value += 0.1f) {
            // Giá tr? d?u ra s? d?ng DAC
            out.write(out_value);
            wait(0.1);
            // doc ADC input
            float in_value = in.read();
            // DAC - ADC
            float diff = fabs(out_value - in_value);
            printf("(out:%.4f) - (in:%.4f) = (%.4f) \n\r", out_value, in_value, diff);
            if (diff > 0.05f) {
                printf("FAIL\n\r");
            } else {
                printf("\nOK\n\r");
                 printf("\033[1A\n\r"); // di chuyen con tro len dong truoc do
                // printf("DAC and ADC:");
            printf("(DAC out:%.4f) - (ADC in:%.4f) = (su khac biet giua hai gia tri: %.4f) \n\n\n\r", out_value, in_value, diff);         
            }
            led = !led; //nhap nhay led
        }
    }
}