| ??? 08/21/07 06:51 Read: times |
#143438 - Oscilloscope? Responding to: ???'s previous message |
P Ravi said:
I will explain my requirement:- It would've helped if you'd have done that in the first place! The more information you give, the more likely you are to get good answers! Problem I am facing :- -- I am able to read 24c02 with both the controllers on PCB. but I am not able to do write operation. -- Both controllers are able to read and write 24c02, when the other controller is removed from PCB. Sounds like a bug where something (or things) is marginal - so it only just works with one controller, and only just fails to work for write with both controllers. Have you verified with an oscilloscope that the signal timings and levels are good? |
| Topic | Author | Date |
| I2C communication between one 24c02 and two 8051uC | 01/01/70 00:00 | |
| what search? | 01/01/70 00:00 | |
| Search for | 01/01/70 00:00 | |
| if the OP would know the magic keyword... | 01/01/70 00:00 | |
| Oops - missed the two 8051s! | 01/01/70 00:00 | |
| I2C MultiMaster | 01/01/70 00:00 | |
| Do both 8051s need to be masters? | 01/01/70 00:00 | |
| Yes, I want both to be masters | 01/01/70 00:00 | |
| Oscilloscope? | 01/01/70 00:00 | |
| Re | 01/01/70 00:00 | |
| Not quite true | 01/01/70 00:00 | |
| Use a semi system | 01/01/70 00:00 | |
| re Dereks suggestion 'Use a semi system' | 01/01/70 00:00 | |
| Read the I2C Spec Carefully | 01/01/70 00:00 | |
| two uC are able to read .. | 01/01/70 00:00 | |
| Software or Hardware I2C | 01/01/70 00:00 | |
its a software I2C | 01/01/70 00:00 |