android 串口通信数据接收不全

线程中数据读取

private void read() {
    while (true) {
        try {
            if (mInputStream == null)
                return;
            byte[] buffer = new byte[64];
            int count;
            if (mInputStream.available() <= 0) {
                continue;
            }
            Thread.sleep(200);
            count = mInputStream.read(buffer);
            if (count > 8) {
                EventBus.getDefault().post(buffer);
            }
        } catch (Exception e) {
            return;
        }
    }
}

数据接收

private StringBuilder mStringBuilder = new StringBuilder();

@Subscribe(threadMode = ThreadMode.MAIN)
public void onEventMainThread(byte[] value) {
    Log.d(TAG, "获取到了从传感器发送到Android主板的串口数据");
    try {
        String content =mStringBuilder.append(new String(value,"utf-8")).toString();
        tv.setText(content);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }
}