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I2C Slave problem

 
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Swys



Joined: 24 Feb 2010
Posts: 22

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I2C Slave problem
PostPosted: Mon May 24, 2010 4:14 am     Reply with quote
Hi all,

I am trying to let two PICs communicate with each other over I2C. I am using a PIC24F16KA102 as the slave and a PIC24HJ64GP504 as the master.

The first problem I ran into was with CCS not wanting to configure the slave as a slave, stating Bad Option: SLAVE. The master does work, however. I tested it with the FRAM I have on the board.

I then decided to implement the slave device myself. It seems that the slave address gets recognized by the slave address, but I am not sure how to let the slave send an ACK bit. According to the reference manual the slave module will automatically generate the ACK bit, but I am not seeing this at the master.

Any help will be appreciated
Swys



Joined: 24 Feb 2010
Posts: 22

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PostPosted: Mon May 24, 2010 6:13 am     Reply with quote
O, and I am using version 4.107 of the PCD compiler
christian.koji



Joined: 12 May 2010
Posts: 16

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PostPosted: Mon May 24, 2010 8:59 am     Reply with quote
Hey, i had a problem with i2c too if u wanna u can take a look at this topic
http://www.ccsinfo.com/forum/viewtopic.php?t=42546
or this
http://www.ccsinfo.com/forum/viewtopic.php?t=42626

there is a functional master and slave for pic 18f452
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