I2c problem - rcen does not generate clock

[electroRF]

Hi Ian,
Could you please try this:

https://imageshack.us/photo/my-images/199/yx0n.jpg/

 

[electroRF]

I also added the following Step: Reading the Byte from the Slave.
As you can see, the Master Generates 8 pulses, but the SDA remains Zero during these 8 pulses, and it goes up only after the 8th pulse is over.

**broken link removed**
**broken link removed**

Do you have an explanation for that?

 

[Ian Rogers]

I know this is crazy but what value are you expecting..... What if the value to read IS zero???

 

[electroRF]

Hi Ian,

The value for sure is not Zero,

I wrote a cursor value - 0x15.
Then read Zero
Then wrote Text to the GLCD, and I saw it has an offset due to the 0x15 (by default it'd start at 0x00).

 

[Ian Rogers]

Okay... So we know it is responding.. we need to find out what address to use... Have you tried 0x8C as a read command?

 

[electroRF]

Hi Ian,
Thank you.

Yes,
I tried 0x8C for both Write and Read (instead of just for Write).
it didn't work.
I also tried 0x00 and 0x01 (global address) for READ command, but it didn't work also.