PIC 2 PIC communication

[Mario]

I am using PIC to PIC communication with the help wireless module TLP/RLP 434A pair from laipac.com. I verified my output from serial transmition from PIC on the oscilloscope using this code.
………………………
' TX code
' OSC 4M
TRISB=%10000000
While portb.7 =1
Serout2 0,16780,($55,$55,"A",170)
wend
End
……………………..
My RF component can be viewed using spectrum analyzer and I realize that my transmitter block including PIC and TLP 434A working fine. But in the receiver (RLP 434A) digital and analog output I got garbage.

So Finally, I decided not to overrun the receiver so I didn't use while in the following code:
……………………
' TX code
' OSC 4M
TRISB=%10000000
Serout2 0, 16780, [$55,$55,"A",170]
End
…………………..

But also it is not succeeded…………!!!!!!!!
Here my code for RX
……………………
' TX code
' OSC 4M
TRISA=0
Mydata var byte
PORTA=0
Pause 1000
Serin2 0, 16780, [wait ("A"),Mydata ]
PORTA = Mydata
Pause 2000
End

I appreciate any kind of help……………………….

[mikem]

Mario,


Your serin and serout commands are setup for a basic stamp, particularly your baud rates are wrong. You need to read the Pbasic manual and select the proper ones for Melabs Pbasic or Pbasic pro.
Try changing them to the following.

Serout2 0,N2400,($55,$55,"A",170)
Serin2 0, N2400, [wait ("A"),Mydata ]


Mike

[Kamikaze47]

I'm attempting the same thing with RF PIC-PIC serial communication. Any chance you could clear up a few things for me?

what is the reason for sending ($55,$55,"A",170) instead of just your data? I take it your data in this case is 170? Also, why is the sent data in curved brackets () and the recieved in square brackets []?

Thanks

[Mario]

I'm attempting the same thing with RF PIC-PIC serial communication. Any chance you could clear up a few things for me?

what is the reason for sending ($55,$55,"A",170) instead of just your data? I take it your data in this case is 170? Also, why is the sent data in curved brackets () and the recieved in square brackets []?

Thanks

This $55 just to make you receiver (wake up) ready to receive your valuable data ,so the receiver will wait until it reach to "A" then save whatever you send in the variable....

actually ,the correct bracket is [] for pic basic pro and () for basic one

[ChrisMicro]

Why using SerOut2 and SerIn2?
The following code works perfect in RF applications, I construct my own transmitter with a BFR92A with a saw resonator and a RR3 receiver module with a range of up to 300M, your qualifier "A" or any other character is adequate handshaking.
Transmitter:
SerOut PORTA.6,N1400,["A",data,data,.....]
Receiver:
SerIn PORTA.5,N1400,["A"],B0,B1,B2,.... ' depending on how many bites you want to receive

[mister_e]

If it was as this simple... Manchester and any other method would never exist

It will depend of tons of elements.. this is why i hate RF stuff.

Try to keep your lady Happy without any 'Preamble' and good method... May work sometimes...