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aletavola
Joined: 11 Jun 2007 Posts: 4
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Comunication pic to pic with two 16f628 chips |
Posted: Mon Jun 11, 2007 2:45 pm |
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Hi friends;
I have two 16f628, one need to talk to PC by rs232, do delta sigma AD and send a messages the other 16f628.
I2C is a good idea? How can i implement i2c slave mode in 16f628?
Thanks
Alexandre Tavola |
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PCM programmer
Joined: 06 Sep 2003 Posts: 21708
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Posted: Mon Jun 11, 2007 3:02 pm |
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The 16F628 doesn't have an SSP module, so there's no easy way to
do an i2c slave. |
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aletavola
Joined: 11 Jun 2007 Posts: 4
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Posted: Mon Jun 11, 2007 3:07 pm |
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Any sugestion? I just need to send a message to another pic. |
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aletavola
Joined: 11 Jun 2007 Posts: 4
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Posted: Mon Jun 11, 2007 3:13 pm |
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Can i use another two pins of first chip to send serial data to the second pin?
i have two pins available. |
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arunb
Joined: 08 Sep 2003 Posts: 492 Location: India
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RE: |
Posted: Mon Jun 11, 2007 3:56 pm |
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Yes you can use serial method, but you may need to use interrupts on the receive pins, for better efficiency.
thanks
arunb |
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aletavola
Joined: 11 Jun 2007 Posts: 4
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Posted: Mon Jun 11, 2007 5:02 pm |
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i have no ideia how to implement this... but... i think is is not so difficult.
i belive that i can use two streams, one for pc and other for pic intercom.
i just need to write a value to second pic.
I belive that i just need to implement a software uart in first pic and write data to it. (the second pic is watting the info with gets()) and use the hard uart to comm with pc.
Thanks
Alexandre |
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dyeatman
Joined: 06 Sep 2003 Posts: 1924 Location: Norman, OK
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