0

I want to communicate Arduino A to Arduino B by using RF module. But my RF module (Tx- XLPCF20, Rx- XY-R01A) only consist of 4 pins of data pin where it can send 4 bits of data only. So, I want to develop a new encoding to send data by using 4 bits of data. How should i do for the coding since I don't want to use serial write for coding. Any suggestion? Help me please. If u can give me the coding, I'm beyond thankful.

1 Answer 1

1

You have 4 channels of raw HIGH/LOW communication. How you use them is up to you.

The simplest method is to use an asynchronous serial protocol:

  • Use Serial: Connect the TX of one Arduino to channel 1 at the TX, and RX channel 1 to RX on the other Arduino
  • Use SoftwareSerial: The same as above but you choose the pins
  • Use VirtualWire: very similar to SoftwareSerial

For higher speeds, since you have 4 channels, you could use a synchronous serial communication protocol. It should be perfectly possible to connect three of the channels to SPI and communicate as if it were talking directly to an SPI device - one channel to SCK, one to MOSI and one to SS. The other end has SCK, MOSI and SS but running in slave mode.

No need to "invent" a 4-bit protocol, it's too much work.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.