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???
10/08/08 15:42
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 		 #158936 - Shifted
Responding to: ???'s previous message
Yes, the address is shifted:

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// store slave address + W for use in ISR
slaveaddress = address << 1;


So the address passed to i2c_transmit is the actual address of the I2C device and does not include the R/W bit.

Did you put a scope on the I2C bus and check that the transmit signals are reaching the EEPROM? Do you see the EEPROM responding with an ACK?

If you did check with a scope then please contact me at support at esacademy dot com and I'll send you some example code that we wrote to test the I2C module when we developed it.

Andy

List of 51 messages in thread
TopicAuthorDate
Question about I2C code from Code Architect            01/01/70 00:00      
   these functions are like...            01/01/70 00:00      
      Some functions are not necessary ...            01/01/70 00:00      
         yes            01/01/70 00:00      
            Question about I2C (again)            01/01/70 00:00      
               do not fiddle with the SFRs            01/01/70 00:00      
            I2C and code architect            01/01/70 00:00      
               problens with I2C            01/01/70 00:00      
                  what tools do you have?            01/01/70 00:00      
                     Tools            01/01/70 00:00      
                        try smaller resistors            01/01/70 00:00      
                           I2C Code            01/01/70 00:00      
                              Update            01/01/70 00:00      
                              I2C Code            01/01/70 00:00      
   Problens in I2C            01/01/70 00:00      
   The code            01/01/70 00:00      
      other board, same problem            01/01/70 00:00      
         I do not recall, but have a look            01/01/70 00:00      
            Shifted            01/01/70 00:00      
               Issues            01/01/70 00:00      
                  Ok..more questions.            01/01/70 00:00      
                     I2C            01/01/70 00:00      
                        How to write ?            01/01/70 00:00      
   Always get IDLE status in I2C bus            01/01/70 00:00      
   Always get IDLE status in I2C bus            01/01/70 00:00      
      I2C Interrupt doesn't work.            01/01/70 00:00      
   HOW CAN I TEST I2C INTERRUPT?            01/01/70 00:00      
      It seems to me that ....            01/01/70 00:00      
         ok, I removed spy from I2C int            01/01/70 00:00      
            some code            01/01/70 00:00      
               I need baby steps now. I 'm staying crazy with it.            01/01/70 00:00      
                  getting less crazy            01/01/70 00:00      
   where is            01/01/70 00:00      
      I couldn't understand            01/01/70 00:00      
         things            01/01/70 00:00      
         Misunderstanding            01/01/70 00:00      
            if you have ICE or ...            01/01/70 00:00      
         Code            01/01/70 00:00      
   Your note to me            01/01/70 00:00      
   Baby steps again - I2C, the return            01/01/70 00:00      
      Understanding            01/01/70 00:00      
         Because...            01/01/70 00:00      
            Hmmm            01/01/70 00:00      
                I can see something finally !!!            01/01/70 00:00      
                  Breadboard            01/01/70 00:00      
                     solder joints            01/01/70 00:00      
                        by checking EVERY solder joint twice.            01/01/70 00:00      
   I checked all solder joint            01/01/70 00:00      
      look in the datasheet and find out how to make ...            01/01/70 00:00      
         I didn't get yet            01/01/70 00:00      
            Anyone?            01/01/70 00:00      

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