| ??? 08/20/07 13:54 Read: times |
#143429 - I2C MultiMaster Responding to: ???'s previous message |
There should be a multitude of hits for MultiMaster and the associated software solutions.
However the OP wanted to know the hardware wiring. Quite simple really: SCL amd SDA pulled to Vcc with about 10k resistors. Just connect all SCLs and all SDAs and all GNDs. Each potential Master should always check the bus is free before taking control and release the bus when it is no longer needed. You also need to check that any Slaves are not keeping extended SDA low pulses. |
| 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 |