File content as of revision 4:edd6e262de9e:

#include "mbed.h"
#include "io.h"

//Serial pc(P0_9, P0_8);// TX=P0_9

/*
Serial pc(P0_9, P0_8);// TX=P0_9
AnalogIn vin(P0_1);

int main()
{
    pc.baud(9600);
    while(1){
        pc.printf("CONFIG=%x\r\n", NRF_ADC->CONFIG); // 0x0000046a 
// EXTREFSEL=00 (none)
// PSEL=00000100 (use AnalogInput2)
// REFSEL=11 (VDD with 1/3 prescale)
// INPSEL=010 (prescale=1/3)
// RES=10 (10bit)
        pc.printf("%f %d\r\n", vin.read(), NRF_ADC->RESULT);
        wait(0.1);
    }
}
*/    

io io;

Ticker tk; // 1s timer for switch check & weighgt measure
float weight;
uint8_t fPow = 0;

 // 1s timer for switch check & weighgt measure
 void ticker_1s()
{
    io.analog_pow(1); // turn analog power on
    weight = io.get_weight(); // get weight [g]
/*
    // check switch, and control power flag (fPower)
    if (fPow == 0 && io.get_switch() == 1){
        while(io.get_switch() == 1); // wait until switch released
        fPow = 1;
    }
    if (fPow == 1 && io.get_switch() == 1){
        while(io.get_switch() == 1); // wait until switch released
        fPow = 0;
    }
*/

//    io.display_value = (uint16_t)(io.get_weight_raw() * 9999.0); // dummy display
//    io.display_value = (int)(io.get_x() * 9900 + io.get_y() * 99); // test: display joystick XY value
//    io.display_value = (uint16_t)(io.get_x() * 9999.0); // dummy display


    io.analog_pow(0); // turn analog power off
}

int main()
{
    tk.attach(&ticker_1s, 0.1);
//    io.calibrate_weight(); // initial calibration
    while(1){
        io.display(1);        
        for (int i = 0; i < 50; i++){
            io.display_value = (uint16_t)(io.get_weight() * 9999.0); // dummy display
            wait(0.1);
        }
        io.display(0.3);        
        for (int i = 0; i < 50; i++){
            io.display_value = (int)(io.get_x() * 9900 + io.get_y() * 99); // test: display joystick XY value
            wait(0.1);
        }
//        io.display_value = (uint16_t)(io.get_weight() * 9999.0); // dummy display
//        wait(0.1);
//        for (float i = 0; i < 1.0; i+=0.05){
//            if (i <0.5) io.display(1.0-i);
//            else io.display(i); // change display brightneess
//            wait(0.1);
//            io.display_value = (uint16_t)(io.get_weight() * 9999.0); // dummy display
//        }
    }
}