PIC Basic I2C "network"

[carrotts]

picbasic i2c

I am developing a system that needs to be expandable. The system uses PIC micro (16F876), and simply counts input pulses and stores values to external I2C memory. The system can contain several of these counter devices. One main PIC then collects info from the Counter PICs and/or I2C memory and passes this data to a PC via a RS232 Link. The main PIC is used so that the counter PICs are not stopped counting whilst passing data. I am using PIC basic Plus, and can get a counter PIC to talk to I2C. The difficulty comes when trying to talk between two PIC's, as both want to be master devices. Does anyone have any suggestions?
Thanks in advance

Carrotts

 

[meax98]

pic i2c network

Try this one, you will get the picture.

regards
meax98

 

[meax98]

i2c picbasic

this is it:

meax98

 

[carrotts]

basic i2c

Looks good. I'll try it out later ans tell you how i get on.

thanks a lot

carrotts

 

[carrotts]

i2c basics

Thanks for the programs, but unfortunately I'm using a different PIC basic. I am using crownhill. I could though follow the listings, and even found a couple of progs for my PIC basic that did the same thing. The listings make sense, but I am struggling to communicate between two PICs still. I am simulating in proteus. The problem seems to be with addressing, but I am not sure. Which registers should I be interested in, I have a watch on all SSP registers, and very little seems to happen on them.
I've looked at a few app notes on microchips site, but they don't explain the addressing side very well.

All help appreciated.


Carrotts

 

[huahua]

16f876 i2c problem

Config one PIC as master I2C Device and the rest as slaves. The master polls the slaves one by one.

Hope it helps

 

[carrotts]

example config i2c pic

Thanks, but I'm not sure how i config them like that, do I use the registers?

 

[stefk]

picbasic pic to memory

Hi,
Yes , you surely should use registers .
There are a lot of examples , how to configure PIC 16F876/877 I2C interface. Check for example this one : http://www.sxlist.com/techref/microchip/16f877/snipp.htm

 

[stefk]

pic master i2c picbasic

I'm sorry , I have forgitten one more , very interesting link , where you can find more examples for configuration PIC's serial interfaces:
https://www.microchipc.com/sourcecode/#serial

 

[Stark]

ic2 picbasic

I think the better solution is to build a LIN network structured on particular message to permit communication with master and between to slave too.
Stark

 

[Stark]

picbasic+i2c

I think the better solution is to build a LIN network structured on particular message to permit communication with master and between slave too.
Stark

 

[Aircraft Maniac]

pic i2c bus network

Try

www.rentron.com

They have lots of stuff on PIC microcontrollers and their interfacing with PC aswell as with each other

Hop it helps

Aircraft Maniac

 

[carrotts]

picbasic i2c

thanks for all the help folks

Great links, best get my reading head on. Nice to people will lend a helping hand

Regards
And a Merry Christmas to one and all
Carrotts