/**
* デバイスの検出
*
* @param i_timeout_ms タイムアウトする時間[ms]
* @return true:デバイスが存在
* @throws MbedJsException MbedJS例外
*/
public boolean isActive(int i_timeout_ms) throws MbedJsException {
sleep_ms(ATP3011.AQTK_STARTUP_WAIT_MS);
long start = System.currentTimeMillis();
do {
if (this._i2c.write(this._addr, new byte[] {0x00}, false) == 0) {
this._last_call_in_msec = System.currentTimeMillis();
return true;
}
sleep_ms(ATP3011.AQTK_POLL_WAIT_MS);
} while (System.currentTimeMillis() - start < i_timeout_ms);
return false;
}
/**
* ビジー状態のチェック
*
* @return true:ビジー
* @throws MbedJsException MbedJS例外
*/
public boolean isBusy() throws MbedJsException {
// 最終呼び出し時刻チェック
long now = System.currentTimeMillis();
if (now - this._last_call_in_msec < AQTK_POLL_WAIT_MS) {
return true;
}
this._last_call_in_msec = now;
// I2C通信
I2C.ReadResult rr = this._i2c.read(_addr, 1, false);
byte c = rr.data[0];
if (c != 0) {
return false;
}
return c == '*' || c == 0xff;
}
private void _initDevice() {
this._last_call_in_msec = System.currentTimeMillis();
}
/**
* コマンドの書き込み
*
* @param i_msg 書き込む文字列
* @throws MbedJsException MbedJS例外
*/
public void write(byte[] i_msg) throws MbedJsException {
this._i2c.write(this._addr, i_msg, false);
this._last_call_in_msec = System.currentTimeMillis();
}