Peripheral clock question

[Wild_Mammoth]

I’m wondering when would you want to use Peripheral Clock at half vs full in Arduino?

Would complex blade styles benefit a higher clock?

[ryryog25]

CPU and peri clocks should always be set to the max available for proffie.

That option is leftover from the plugin for “generic” STM32 dev kits. There’s no reason to touch it for proffie.

[Wild_Mammoth]

Oh, for me the default for Peripheral was half, not sure why.. I’ll update it to full

[olivierflying747-8]

Mine has always been at half as well, because I saw this back then:

Arduino-proffieboard plugin 4.6 beta

Sigh. Well as gremlins go, I can not reproduce this now for some reason. Nothing has changed . I only put my display to sleep and came back to the same setup. Today: The V2.2 board on the test bench was still doing the same as I last left it, “Font direSQUEEEEE” when powered up by either USB or battery when no SD card inserted. I re-uploaded with 4.6 plugin and now it’s fine. I tried 2 other boards, one installed , one loose. all seem fine now. Arduino 1.8.19 the whole time. Tried both Serial only as well as Serial + Mass Storage. No difference, still fine now. DOSFS: SPI Optimize: Smallest Code Periphereal Clock: Half No idea.

&

Arduino-proffieboard updated to version 4.1

How about “Periphereal Clock:” half or full ?

[profezzorn]

@Wild_Mammoth

I’m wondering when would you want to use Peripheral Clock at half vs full in Arduino?

Normally, you should set this to half, because it uses less power. The only reason for running it at full speed is if you have a large SPI screen which requires running the SPI bus at 40Mhz.

@Wild_Mammoth

Would complex blade styles benefit a higher clock?

no

[profezzorn]

@ryryog25

That option is leftover from the plugin for “generic” STM32 dev kits. There’s no reason to touch it for proffie.

Incorrect, I added this option when I was working on SPI screens.