File content as of revision 0:db49fab3bd78:

#define SAMPLE_RATE    150000

#include "mbed.h"
#include "adc.h"

//Initialise ADC to maximum SAMPLE_RATE and cclk divide set to 1
ADC adc(SAMPLE_RATE, 1);

uint32_t adc_max[6], adc_av[6], adc_min[6];
int snap = 0;

void min_max_av(int chan, uint32_t value) {
    static uint64_t adc_tot[6], counter = 0;
    uint32_t adc_max_tmp[6], adc_av_tmp[6], adc_min_tmp[6];
    
    
    int i, adc_value;
    
    for (i=0; i<6; i++) {
        adc_value = adc.read(adc.channel_to_pin(i));
        //Update min, max and average records and totals
        if (adc_value > adc_max_tmp[i]) adc_max_tmp[i] = adc_value;
        if (adc_value < adc_min_tmp[i]) adc_min_tmp[i] = adc_value;
        adc_tot[i] += adc_value;
        counter++;
        //If snapshot requested then sample data and reset average
        if (snap) { 
            adc_av[i] = (int)(adc_tot[i] / counter);
            adc_max[i] = adc_max_tmp[i];
            adc_av[i] = adc_av_tmp[i];
            adc_min[i] = adc_min_tmp[i];
            adc_max_tmp[i] = 0;
            adc_min_tmp[i] = 0xFFFF;
            adc_av_tmp[i] = 0;
        }
    }
    if (snap) counter = 0;
    snap = 0;
}

//Show a bargraph of ADC value
void bar(int value) {
    int i, j;
    
    j = (value * 50) / 4096;
    
    if (j > 50) j = 50;
    if (j < 0) j = 0;
    
    for (i = 0; i < j; i++)
        printf("=");
     printf("\n");
}

int main() {
    int i;
    
    printf("\nRequested max sample rate is %u, actual max sample rate is %u.\n",
        SAMPLE_RATE, adc.actual_sample_rate());
    adc.append(min_max_av);

    //Prepare for burst mode on all ADC pins
    adc.startmode(0,0);
    adc.burst(1);
    adc.setup(p20,1);
    adc.setup(p19,1);
    adc.setup(p18,1);
    adc.setup(p17,1);
    adc.setup(p16,1);
    adc.setup(p15,1);
    //For burst mode, only one interrupt is required
    //which can be on any enabled pin. We have enabled all
    //of them here.
    adc.interrupt_state(p15,1);
    
    printf("Burst mode, printing once per second...\n");
    while (1) {
        snap = 1;
        wait(0.5);
        for (i=0; i<6; i++) {
            printf ("CH %u Min :", i);
            bar(adc_min[i]);
            printf ("CH %u Av  :", i);
            bar(adc_av[i]);
            printf ("CH %u Max :", i);
            bar(adc_max[i]);
            printf("\n");
        }
        printf("......................................................\n");    
        wait(0.5);
    }
}