The data is exchanged using the Computer Aided Transceiver (CAT) protocol, developed for use with amateur radio transceivers.
Arduino Multiple Software Serial Ports Serial Port InArduino Multiple Software Serial Ports Manual Specifies ThatThe SDRUno User Manual specifies that in order to exchange info, the SDRUno application must be assigned to one serial port in a linked pair, and the requesting device is assigned to the other linked port.
However, I cant find a way to get the Arduino to work with a linked serial port. You have to create the linked pair with third party software. I am able to assign the Arduino to one of the linked serial ports using the IDE tools, but when I try to upload my sketch, I get an error message saying that the port is already open or in use by another device. It appears that the Arduino will only work with a serial port that is assigned to it when the USB cable is attached. I have tried deleting the automatically assigned port and then assigning the Arduino to a linked serial port, but I get the same error message. Arduino Multiple Software Serial Ports How To Get TheIf anyone knows how to get the Arduino to accept assignment to a linked serial port I would greatly appreciate your assistance. Then applications can see the virtual com ports as real ones, using them for communication. An example for an application called Ham Radio Deluxe (HRD) is given on the following page. Third party tools, such as Eltima Softwares Virtual Serial Port Driver 9.0 can create the type of linked serial ports described. My issue is that once created, and the Arduino assigned to one of the ports in the IDE tools section, the sketch cannot be loaded, an error message saying the port is already open. That sounds like something that is commonly done with an Arduino Mega. A serial device is connected to Serial and another serial device is connected to Serial1. When a byte arrives on Serial it is written to Serial1 and vice versa. Something like Code: Select if (Serial.available 0) byte recByte Serial.read(); Serial1.write(recByte); Is that what you have in mind.R. I thought about a Mega as an alternate, but both serial lines need to go to the PC via USB. I saw that Arduino sells a USB to serial adapter that was made to use with the Arduino variants that have no USB connection on the board. Best to get one that has 6 connections at the TTL end - mine have GND, CTS, 5v, Tx, Rx and RTS..R. With the mega, I have two COM ports assigned, one for serial and one for serial1. There are several applications that can create these linked ports, the one I am using is called Virtual Serial Port Driver Pro by Eltima Software. It creates a pair of virtual ports that are interconnected, so that two apps can communicate. The problem is that the Arduino boards will not recognize the linked ports.
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