12f675_fuse_about_to_blow!

[LEDave]

I've bought a 3v battery for the TX and fitted it, a red LED blinks when either push button switch 1 or 2 is pressed, so seems to be working.

As for the the RX module (I haven't inserted this yet), the evaluation socket is empty and the PIC16C745 Firmware chip is still in place. I'm tempted to insert the RX module into the J3 Header but haven't.

Not sure what to do next.

Dave

[LEDave]

This is what microchip has to say:

http://ww1.microchip.com/downloads/e...Doc/70092a.pdf

1.3 GETTING STARTED WITH THE rfPIC DEVELOPMENT KIT 1
The transmitter modules come pre-programmed with a transmitter demonstration. The
enclosed PIC16F676 is programmed with a receiver demonstration program. Together
they demonstrate an on-off command and control application.
The PICkit 1 FLASH Starter Kit serves as a low-cost development and demonstration
platform for the transmitter and receiver modules.
To see your rfPIC Development Kit 1 in action, perform the following steps:
1.3.1 Preparing the Receiver Module for Operation
Step 1:
Familiarize yourself with the PICkit 1 FLASH Starter Kit operation by reading the
PICkit™ 1 FLASH Starter Kit User’s Guide (DS40051) and performing some of the
tutorials. Familiarity with the PICkit Starter Kit will be assumed throughout this user’s
guide.
Step 2:
Remove power from the PICkit Starter Kit by disconnecting the USB cable.
Step 3:
Remove the PIC12F675 from the PICkit Starter Kit evaluation socket.
Step 4:
Insert the PIC16F676 into the PICkit Starter Kit evaluation socket. See Figure 1-1.
Step 5:
Insert a receiver module (315 or 433.92 MHz) into the PICkit Starter Kit expansion
header J3. Make certain that the receiver module is oriented correctly. See Figure 1-1.

So it looks to me that if I'd have bought a complete rfpic development kit it would have come with a PIC16F676 programmed with a receiver demonstration program. So the TX has a demo program installed but I haven't got a PIC16F676 for the RX with a demo program.

[mackrackit]

I have not had time to look into this very much but some demo programs can be found here. In ASM though.
http://www.microchip.com/stellent/id...cName=en010060

[LEDave]

Cheers mackrackit,

I'll have a look and a tinker (tinker is that an engineering term...) and report back.

An RF_LED_Blink program would do for me right now.

Dave

[LEDave]

I found this RX_Demo program for the rfpic, only thing is it says 16f675 again, so no joy so far.

Filename: rcvr_demo.asm
; Date: April 25, 2003
; File Version: 1.0
; Assembled using:
;
; Author: Steven Bible
; Company: Microchip Technology Inc.
;
;
;----------------------------------------------------------------------
;
; Files required:
; p16f676.inc

[mackrackit]

Did some more poking around.
If you have not seen these they will be helpful. Data sheets for the actual chip on the modules.
http://ww1.microchip.com/downloads/e...Doc/70090a.pdf
http://ww1.microchip.com/downloads/e...Doc/70091a.pdf

As you know the transmitter is programmable and it appears that both modules are pre configured for ASK modulation.

You can find out more about modulations here.
http://davehouston.net/RFTipsTricks.htm
Dave has a whole lot of good info on his site.
http://davehouston.net/

Looks like you can use pin #11 from the receiver module to connect to any PIC for serial data so the code that Bruce posted can be used.

[LEDave]

Thanks for the info mackrackit, the TX does work, the doorbell has rung several times now when the TX is pressed Still no blinking LED though, will get there though.

Dave