3D-printing/klipper
1
0
Fork 0
mirror of https://github.com/Klipper3d/klipper.git synced 2025-08-06 21:44:13 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions 3

i2ccmds: Pass the i2c address as a 7-bit number (0-127)

Browse source 
The sam3 i2c code and the linux code use a 7-bit i2c address, while
the avr, lpc176x, and samd21 i2c code uses an 8-bit address with the
least significant bit always zero.  A similar issue occurred in the
host code (sx1509.py and replicape.py use 7-bit addresses while
uc1701.py and mcp4451.py use 8-bit addresses).

Consistently use 7-bit addresses in all the code.  This breaks
compatibility between host and mcu software, so make a change to the
config_i2c command to force users to synchronize software updates.
This also breaks common Smoothieboard configs, so update the mcp4451
code to validate the i2c_address.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2018-12-27 19:11:46 -05:00 • committed by KevinOConnor
parent f2f54290e8
commit e26d1a3567
10 changed files with 28 additions and 17 deletions
Download patch file Download diff file Expand all files Collapse all files

5
docs/Config_Changes.md
View file

@ -6,4 +6,9 @@ All dates in this document are approximate.
# Changes
20190107: The i2c_address parameter in the mcp4451 config section
changed. This is a common setting on Smoothieboards. The new value is
half the old value (88 should be changed to 44, and 90 should be
changed to 45).
20181220: Klipper v0.7.0 released