| ??? 08/22/07 05:27 Read: times |
#143492 - Software or Hardware I2C Responding to: ???'s previous message |
Software or Hardware I2C? If it is Software Se my other Post.
uC1, uC2 and 24c02 are assembled on separate
independent PCBs( totally 3 PCBs) How far is the cable? Good grounds? Port 2 of a "standard" 8052 is not open drain. Try Port 0. If one does not work while the other is there doing nothing then start with electrical issues. |
| 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 |