Dietpi: dietpi-config does not change i2c_baudrate correctly

[flashspys]

Creating a bug report/issue

Required Information

• DietPi version | G_DIETPI_VERSION_CORE=6 G_DIETPI_VERSION_SUB=25 G_DIETPI_VERSION_RC=3 G_GITBRANCH='master' G_GITOWNER='MichaIng'
• Distro version | stretch
• Kernel version | Linux link 4.19.42-v7+ #1219 SMP Tue May 14 21:20:58 BST 2019 armv7l GNU/Linux
• SBC device | RPi 3 Model B (armv7l)
• Power supply used | 5V 2A
• SDcard used | Samsung 32GB

Steps to reproduce

1. Set the i2c_arm_baudrate via dietpi-config to e.g. 10kHz

Expected behaviour

• As described in e.g. the official doc or in various other sources, there should be an entry in config.txt like dtparam=i2c_arm_baudrate=10000

Actual behaviour

• The entry is wrong: i2c_arm_baudrate=10000. The dtparam= is missing. Because of this, dietpi-config does not change the baudrate effectively.

I changed the entry in /DietPi/config.txt manually and then the baudrate changed.

[MichaIng]

@flashspys
Many thanks for your report. I mark this for investigation.

[MichaIng]

Resolved for v6.26: https://github.com/MichaIng/DietPi/pull/2967

Very good find, this wrong handling is already in our code since loooong time, at least down to v6.10. Seems like not much users needed any different baudrate than the default 100,000 😄.

[flashspys]

I just switched to the dev branch, works as expected 👍

[MichaIng]

@flashspys
Many thanks for testing!