I2C clock speed settings
Hi All!
I have an issue with the clock speed settings of the I2C bus. I would like to use the i2c-1 peripheral (pin3 and pin5 on the 40 pin header) with standard mode (100 kHz). I set the module to ACPI mode and the speed settings is 100 kHz in the BIOS. The frequency of the SCL pin is 625 kHz which I measured with an oscilloscope and it doesn't depend on the BIOS speed settings. I compared the HKLM/HARDWARE/ACPI registry key with the two different speed settings (100 kHz and 400 kHz). The keys were equal.
I found similar issues under linux:
https://forum.up-community.org/discussion/3943/up2-how-to-select-i2c-speed-mode
https://forum.up-community.org/discussion/3850/up-board-ubuntu-18-04-i2c-speed-select
Current configuration:
BIOS: UPC1DM17
OS image ID: Windows
OS: Windows10 Pro 1903
I used aaeonEAPI.dll library with .NET Core 3 (GPIO and PWM modules work fine)
Best regards
Categories
- All Categories
- 63 Announcements & News
- 48 Product News - New Product/Product Change Notice/ End-of-life
- 96 Welcome Developers!
- 45 Unboxing & Project Sharing
- 22 Tech Updates
- 3.4K UP Products
- 15 UP 7000
- 1 UP Squared i12
- 11 UP Xtreme i12
- 13 UP Squared Pro 7000
- 1 UP Element i12 Edge
- 23 UP Squared V2
- 65 UP 4000
- 23 UP Xtreme i11
- 34 UP Squared 6000
- 56 UP Squared Pro
- 136 UP Xtreme
- 820 UP Squared
- 1.4K UP Board
- 74 UP Core Plus
- 217 UP Core
- 3 UP Xtreme Lite
- 40 UP AI Edge
- 264 Starter Kits & Peripheral