File content as of revision 1:91d6b2ee7a2e:

/*** Include ***/
#include "mbed.h"
#include "rtos.h"

#include "typedef.h"

/*** Define ***/
#define ON      (1)
#define OFF     (0)

#define SAMPLING_RATE   (1)     /* A/D sampling rate (1kHz) */
#define MAINCYCLE 200               /* [ms] */

#define DEBUG

/*** Global Variable ***/
DigitalOut  myled1(LED1);           /* 起動確認用 */
DigitalOut  myled2(LED2);           /* 割り込み確認用 */
DigitalOut  myled3(LED3);           /* 休止状態確認用 */
Ticker      sampling;               /* Interval timer for A/D sampling */
AnalogIn    wave_in(p20);           /* Waveform input */
Serial      pc(USBTX, USBRX);       /* tx, rx */
Timer       timer;

UINT32      g_sendFlg;
FLT32       g_wave;

UINT32      g_adCnt;


/*** Functions ***/
/* A/D変換割り込み */
void ad_sampling(){
    static INT32 i = 0;
    /* 割り込み中点灯 */
    myled2 = 1;
    g_adCnt++;
    g_wave = wave_in.read() * 3.3;  /*[V] */
    #ifdef DEBUG_
    i++;
    pc.printf("attach: %d,%d\r\n", i, g_adCnt);
    g_wave = i / 100 * 3.3;
    g_wave = g_adCnt * 3.3;
    if(i > 100) i = 0;
    #endif
    wait(0.01);
    /* A/D変換完了後送信 */
    g_sendFlg = 1;
    myled2 = 0;
}


INT32 main() {
    INT32 i = 0;
    DBL64 st = 0;
    DBL64 et = 0;
    myled1 = 1;
    
    /* A/D変換対タイマ割り込み開始 */
    myled2 = 1;
    /* Start interval timer */
    sampling.attach(&ad_sampling, SAMPLING_RATE);
    myled2 = 0;
    
    while(1) {
        /* timer read */
        st = timer.read_ms();
        myled3 = 0;
        
        /* メイン処理 */
        myled1 = !myled1;
        i++;
        
        /* データ送信判定 */
        if(g_sendFlg == 1) {
            /* データ送信 */
            i++;
            #ifdef DEBUG
            pc.printf("cnt: %d, ad cnt: %d, wave: %f\r\n", i, g_adCnt, g_wave);
            #endif
            
            /* フラグリセット */
            g_sendFlg = 0;
        }
        
        /* timer read */
        et = timer.read_ms();
        /* 制御周期まで待機 */
        Thread::wait((uint32_t)(MAINCYCLE - (et - st)));
    }
}