Simple RF Transmit and Receive

[koossa]

Dave, I will implement your code, thank you!

Will it be possible for me to connect the Receiver's RF In Pin to the PC's Comm Port?

Thx!!

[dhouston]

Will it be possible for me to connect the Receiver's RF In Pin to the PC's Comm Port?

No. The Receiver RF IN pin is where you connect the antenna.

[dhouston]

Will it be possible for me to connect the Receiver's RF In Pin to the PC's Comm Port?

No. The Receiver RF IN pin is where you connect the antenna.

[koossa]

What I mean is the RXD pin, can I connect it to the PC's Comm port.
Or do I have the wrong understanding of the RXD pin?

[thye]

Hi....I'm new here and a beginner in PICBasic Pro...

I'm using PIC 16F877A for Tx and Rx project also....what is the simple code for Tx and Rx?

Thanks a lot....

[koossa]

Dave

In your code for the receiver there is a pin for the pulsout, GPIO.1.
Is this the CD Pin?

[dhouston]

If you continue to use SerOut with the transmitter, then the receiver RXD pin output timing will be the same as RS232 but the polarity will depend on what polarity you use at the transmitter. The COM port on a PC expects inverted polarity.

However, the RF link in the example code I'm suggesting is not RS232 compatible. It is an example of the NEC protocol which is widely used for remote control and for applications like yours. X-10 uses it for all of their RF applications, including motion sensors. For an RF link it's much simpler to implement than SerIn/SerOut and is very reliable for small amounts of data. It does use Debug to output the received codes to a PC serial port. See the PBP manual for how to implement this.

I think you mean GPIO.1 and PulsIn. That is equivalent to your RXD pin. The code was written for ASK modules which have no CD so you can ignore CD if you try to adapt my code.

[koossa]

Dave

I am busy implementing your code and all your suggestions.
What must the Comm. port settings be on the PC Side (see attachment)?
I'm using MS Terminal to monitor the incoming data on the PC.