tone()函数冲突
http://www.geek-workshop.com/thread-4037-1-1.html
可以自制函数newtone()
void newtone(byte tonePin, int frequency, int duration) { int period = 1000000L / frequency; int pulse = period / 2; for (long i = 0; i < duration * 1000L; i += period) { digitalWrite(tonePin, HIGH); delayMicroseconds(pulse); digitalWrite(tonePin, LOW); delayMicroseconds(pulse); } }
后续修改库的方法,后续补上。