Guru
Joined: 31/12/2012
Location: New ZealandPosts: 1987
| Posted: 03:26pm 14 Jan 2022 |
typing "i2c reserved addresses" (without quote marks) into google reveals:
"A seven bit wide address space theoretically allows 128 I2C addresses - however, some addresses are reserved for special purposes. Thus, only 112 addresses are available with the 7 bit address scheme. To get rid of this a special method for using 10 bit addresses is defined.
The following table shows I2C addresses reserved for special purposes:
0000000 0 General Call
0000000 1 Start Byte
0000001 X CBUS Addresses
0000010 X Reserved for Different Bus Formats
0000011 X Reserved for future purposes
00001XX X High-Speed Master Code
...
11110XX X 10-bit Slave Addressing
11111XX X Reserved for future purposes"
from:
https://www.i2c-bus.org/addressing/
what exactly is the device you have that has address 0x78?
cheers,
rob :-)
Edited 2022-01-15 01:37 by robert.rozee