"Hardware Plaftorm"

Introduction

For interface developing a hardware platform was proposed. Project of PCB was designed in Altium Designer Winter 2009
Two version of hardware were presented:

It should be emphasized, that the hardware card was proposed to provide simple connection between microcontroller CAN controller and CAN transceiver for PDCP. Card, used in implementation, didn`t have direct connections and a couple of wires was needed.
Morever, NIMRON card has RS-232 junction, but more popular standard of data exchange becomes USB. Almost every device now is equipped with USB interface while not every computer with serial RS-232. Therefore, on the new card UART-USB converter based on FT232RL chip was placed. Additionally, the card is supplied from USB port (there is a possiblity to supply it externally from 5V or even 3.3 V - dedicated ports) and in general there is no need for external power source and cables (as it was for NIMRON board).
For connection of two nodes only 2 cables are needed, what is undoubted advantage of this solution.

Moreover, simple USB-UART converter was also designed for boards/cards which doesn`t contain build-in converter or RS-232 junction.

Version ATmega128

Block diagram of first version was presented in the picture below.

Version AT90CAN128

Block diagram of version with CAN controller built-in was presented in the picture below.


Project files can be downloaded from Download section.

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