SoftwareSerial软串口通信
#include <SoftwareSerial.h>//实例化软串口
SoftwareSerial mySerial(2, 3); // RX, TX
void setup()
{
Serial.begin(115200);
while (!Serial) {
}
Serial.println("Goodnight moon!");
mySerial.begin(9600);
mySerial.println("Hello, world?");
}
void loop()
{
if (mySerial.available())
Serial.write(mySerial.read());
if (Serial.available())
mySerial.write(Serial.read());
}
怎么不行呢
com4 应该打印出"Hello, world?
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