| ??? 07/31/07 07:41 Read: times |
#142524 - What is the device number ? Responding to: ???'s previous message |
Sudheer Gaddipati said:
Hi,
We are using Samsung I2C Controller, which doesn't support repeated start condition. Sudheer Please quote the actual i2c device number. I am surprised if it does not accept a repeated start condition. However your sequence should work just fine. Please also say which 8051 you are using and is it a software or hardware i2c library. Are you checking that the bus is free when you issue a start? Do you get an ACK from both the slave address cmd AND the register select command ? I suspect that the register select sequence is NOT selecting. In which case when you do a read, the register has got the post-increment value from your previous read. i.e X + 1 Also 16 kHz does seem to be a very slow clock. HTH David. |
| Topic | Author | Date |
| I2C Read Problem | 01/01/70 00:00 | |
| What is the device number ? | 01/01/70 00:00 | |
| Repeated Start is supported by slave | 01/01/70 00:00 | |
| Repeat Start is no different to Start | 01/01/70 00:00 | |
| Problem Solved | 01/01/70 00:00 | |
Did the Workaround involve checking Slave ACK ? | 01/01/70 00:00 |