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Data transmission

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Vizier87

Active Member
Hi guys,
I'm building a low cost weather transmitter with all six weather parameters integrated in one system, fed to a pic16f877a, and I need to send data from it to a nearby pic too, which will transmit the readings into a PC/Laptop (preferably the same PIC), using a pair of 315 Mhz RF module

Question:
1. What would be the best way to transmit data of six 8-bit data via the module? (i.e manchester code, etc) I use an MPLAB compiler, assembly and C.
The diagram of my circuit is attached.

2. Does the ICSP mode via PICkit software allow me to read data from the registers continuously? If no, what kind of connection & software allows this so that the data can be pulled into a MATLAB GUI? I'd like the data to be processed & displayed nicely.


Many thanks.

Rx-Tx.JPG
 
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blueroomelectronics

Well-Known Member
1. Manchester, see Nigels tutorials.
2. USB? An FT232R to your PIC RX/TX pins
3. Something you'll need to write in MATLAB

PS your block diagram makes no sense, why a transistor on the RX module?

Post a detailed schematic.
 

Vizier87

Active Member
My bad.... the transistor's supposed to drive the Transmitter. I interchanged the Tx and Rx.
Is the FT232 equivalent to RS232 chip?

...Is that all?
 
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Vizier87

Active Member
aww man.... but I'm still clueless on how to monitor the GPRs in the PIC (which is usb-connected to the pc/laptop) via a software continuously.. some help clarifying it please..

Do all 18F series support direct usb connections? I'll switch to 18F if it does.
 
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