Arduino 软串口

软串口

软串口就是通过将开发板的串口，映射到普通IO上作为串口使用

接线图

代码

#include<SoftwareSerial.h>

SoftwareSerial softSerial(6, 5); 
void setup() {
    softSerial.begin(115200); //初始化虚拟串口
    Serial.begin(9600); //初始化Arduino默认串口
    softSerial.listen();
    Serial.println(softSerial.isListening());
}

String device_A_String = "";
String device_B_String = "";
void loop() { // run over and over
    if (Serial.available() > 0)
    {
        device_A_String = Serial.readString();
        softSerial.println(device_A_String);
        Serial.println("You say: ");
        Serial.println(device_A_String);
    }
    if(softSerial.available() > 0)
    {
        device_B_String = softSerial.readString();
        Serial.println("received from b: ");
        Serial.println(device_B_String);
    }

    /*if (softSerial.available() > 0)
    {
        if (softSerial.peek() != '\n')
        {
            device_A_String += (char)softSerial.read();
        }
        else
        {
            softSerial.read();
            Serial.print("device A said:");
            Serial.println(device_A_String);
            device_A_String = "";
        }
    }*/

}