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???
10/21/08 12:04
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 		 #159237 - I checked all solder joint
Responding to: ???'s previous message
Hi,

I checked all solder joint. I can see the signal in i2c bus. SDA and SCL are arriving in e2prom.

Now, I'm trying to write a single byte in e2prom. The mcu send start bit command, address device, high address, low address for e2prom, data and stop bit.

I put a instruction P1&=0xEF; in each "case" in i2c interrupt to check if the mcu is working corretcly. I put this instruction in each "case" at the time. I think the interrupt to write to e2prom is working, but I'm not sure.

So I tried to read back from memory, but always get 0x00.

How can test if the write is working ?



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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