Hi,
I've seen the possibility to connect the Flex, using the PIC18, to the USB in order to log data, send commands and so on. I've found that really ineresting and that could be really interesting for my application. For this reasons I have two questions about that :

1) In order to program the PIC18 I've to set the jumpers correctly has written in Flex docs ? Nothing more ?

2) I don't have a demo board how can I set up the SPI connections between the PIC18 and dsPIC ? Which pins I have to use ? Do I need any resitors or circuit adapter between the two MCU ?

Thanks a lot,
Pasquale.

Hi Pasquale!

Yes... use the jumper settings as described in the FLEX docs...

For the SPI connection, please use a Demo Daughter Board, or connect the pins directly using the instructions found at http://www.evidence.eu.com/content/view/250/266/

(And once you have done that, could you please update the Wiki with any missing information you found?)

bye

PJ

Thank you,
I did not understand the pictures until I've got inside the SPI peripherical peripheral.

- From the pictures it seems that I just need to take care about the PIC18 (3.3V - JP9) power supply and wire the dsPIC and PIC18. I don't need any resistor or something, right?

- I've seen the application for Windows that write data using USB to the PIC18. Could please tell me how did you write that application ? Which driver did you use ?

- There is also something wrong in the picture where it's shown the connection for the SPI. As I've seen from the schemes of the Flex Full there are not PIC18's pins on the CON6 (64 pins). Is it right ?

As soon as I do my application I will be glad to write the missing things to the wiki.

Thank you,
Pasquale.

Hi Pasquale...

- no resistors in that case...
- we wil release the application soon, hopefully before the Microchip Masters
- the CON6 contains some pins which come from the PIC18... which are basically _link_ed to the programming part of the dsPIC and to the spi...

Ciao,

PJ

Hi Guys, I have a question for anybody who has worked with spi on flex.
I have connected the con6's pins of the flex with my spi device and I have read the protocol documentation of dspic33, the reference manual cap 18, and also my spi device protocol documentation.
Now, has someone some code about this implementation to look at?

You'd help me a lot.
Thank you in advance

Daniele

Yes... there are a few functions about SPI on Flex in the ERIKA Enterprise source code. Just look into:

ee/pkg/board/ee_flex/inc/ee_board.h
and
ee/pkg/board/ee_flex/inc/ee_board.c

Ciao!

PJ