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Forum Index : Microcontroller and PC projects : i2c simultaneously

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viscomjim
Guru

Joined: 08/01/2014
Location: United States
Posts: 925

Posted: 05:30am 29 May 2014

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In the 4.5 manual it says that for I2C, the master and slave modes can be enabled simultaneously, so does this mean 2 uMites would have this type of code (different addresses of course) running and can be both a master and a slave at the same time just making sure that they are all timed correctly to talk to each other?

I2C OPEN 100,100
I2C SLAVE OPEN &34, 0, 0, WRITED, READD
DO
....
LOOP

READD
...
IRETURN

WRITED
...
IRETURN

I2C CLOSE
I2C SLAVE CLOSE

MicroBlocks

Guru

Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 09:05am 29 May 2014

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Yeah, that is about right.

I would suggest to use the newer/better/clearer/fancier :) way of using a subroutine (It prevents code from accidentally entering a subroutine.) and change the order of it a little.

Like:
[code]
I2C OPEN 100,100
I2C SLAVE OPEN &34, 0, 0, WRITED, READD

DO
....
LOOP

I2C CLOSE
I2C SLAVE CLOSE

SUB READD
...
END SUB

SUB WRITED
...
END SUB
[/code]

Edited by TZAdvantage 2014-05-30

Microblocks. Build with logic.

viscomjim
Guru

Joined: 08/01/2014
Location: United States
Posts: 925

Posted: 03:30am 30 May 2014

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Thanks TZ! I will be trying this Master Slave idea once I get a better handle on I2C. So far with playing around, this is a great way of making simple inexpensive I2C devices when one is not well versed in programming pic chips using assembler.

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