SoftwareSerial library

The 86Duino hardware has built-in support for serial communication on pins 0 and 1. The native serial support happens via a piece of hardware (built into the chip) called a UART. This hardware allows 86Duino’s CPU to receive serial communication even while working on other tasks.

The SoftwareSerial library allows serial communication on other digital pins of the 86Duino, using software to replicate the functionality (hence the name “SoftwareSerial”). A parameter enables inverted signaling for devices which require that protocol.

This library is included in 86Duino Coding 103 and later.

Limitations

The library has the following known limitations:

• If using multiple software serial ports, only one can receive data at a time.
• Not all pins on 86Duino support change interrupts, so only the following can be used for RX: 18, 19, 20, 33, 34, 35, 36, 37, 38, 42, 43, 44.
• The maximum supported baudrate is 19200 bps.

範例

/*
  Software serial multple serial test
  
 Receives from the hardware serial, sends to software serial.
 Receives from software serial, sends to hardware serial.
  
 The circuit: 
 * RX is digital pin 42 (connect to TX of other device)
 * TX is digital pin 11 (connect to RX of other device)
 */
 
#include <SoftwareSerial.h>
 
SoftwareSerial mySerial(42, 11); // RX, TX
 
void setup()  
{
  // Open serial communications and wait for port to open:
  Serial.begin(57600);
  while (!Serial) {
    ; // wait for serial port to connect.
  }
 
 
  Serial.println("Goodnight moon!");
 
  // set the data rate for the SoftwareSerial port
  mySerial.begin(4800);
  mySerial.println("Hello, world?");
}
 
void loop() // run over and over
{
  if (mySerial.available())
    Serial.write(mySerial.read());
  if (Serial.available())
    mySerial.write(Serial.read());
}

Functions

• SoftwareSerial()
• available()
• begin()
• isListening()
• overflow()
• peek()
• read()
• print()
• println()
• listen()
• write()

函式庫參考主頁面

86Duino 參考的文本是根據 知識共享署名-相同方式分享 3.0 許可證，部分文本是從 Arduino 參考 修改的。 參考中的代碼示例已發佈到公共領域。