1 wire bus principle Summary

In summary, it is like a power report!

The power generation report is also a line. Different signals are expressed through the long segment of the ticking sound. This is exactly how 1wire works!

 

 

 

In conclusion, 1wire maintains a high level when there is no signal, and starts from a low level (from the host perspective) when signal transmission or reception is required ).

1. Write:

1. Write 0:

Starting from the low level of the sending and writing signals, the signal remains below 60 microseconds and above 120 microseconds.

2. Write 1:

Keep a low level of at least 1 microsecond at most 15 microseconds from the low level of the sending signal, then release the bus or change it to a high level.

Write operation. It starts from the machine 15 microseconds after the write signal is sent.

 

Ii. Read:

Reading signal: Low Level 1 microsecond.

Release the bus immediately after reading the signal, which can be properly delayed, but the bus signal should be read within 15 microseconds.