They can be found in File → Examples → SoftwareSerial. You are encouraged to go through the examples that come in with the SoftwareSerial library. Serial.println('Hello World') has the equivalent mySerial.println('Hello World') and so on. Serial.begin(9600) translates to mySerial.begin(9600) The other functions are similar to Serial. SoftwareSerial mySerial(10, 11) // RX, TXĪs you can see, you need to create a SoftwareSerial object using two arguments − the RX pin and the TX pin. My third Serial port was using AltSoftSerial.h and was set at 9600 baud. The second Serial port was virtual using SoftSerial.h and was set a 57600 baud.

In the example below, digital pins 8 and 10 on your Arduino board are used as virtual RX serial lines. Defining the Software Serial is very straightforward. The first Serial port was hardware and was used for software debugging and AT command responses. This can be extremely helpful when the need arises to communicate with two serial enabled devices, or to talk with just one device while leaving the main serial port open for debugging purpose. The SoftwareSerial library is included in Arduino IDE Versions 1.0 and above, and you don’t need to install it separately. Other limitations of this library, specific to some Arduino boards, can be found here. I am using this code but my interrupt is not triggered.I also tried by removing. If there is any data available on RX pin, an interrupt signal will be generated, call a callback function to read incoming serial data.I dont want my loop() function constant reading on serial port. Speeds can be up to a maximum of 115200 bps I want to use hardware RX pin of Arduino as interrupt pin. If you are using multiple SoftwareSerial ports, only one can receive data at a time

Thus, if you have any other peripheral that requires serial communication, in the absence of SoftwareSerial, you’d have to do away with USB Serial communication. Arduino Uno, for example, has only one HardwareSerial port (pins 0 and 1), which is connected to the USB via the USB to UART conversion chip. The SoftwareSerial library was developed to ensure that any pins of Arduino can exchange Serial data with other peripherals, like GNSS receivers, using software.

Arduino mega serial port interrupt