How to set values for the timing Register in STM32F303RE in I2C

[AOmar.2]

I try to write the driver for I2C and I open the reference I face a problem in setting values for SCLDEL SDADEL SCLH SCLL and I don't know how to set theses values. I kept searching and I saw there is an Excel sheet you can enter the Pclk and I2C speed frequent,rise time ,fall time, and choose filters then you will get the value I try to apply the example which is provided in the below picture but the result is not the same as the photo

So to summarize What do I need to help me in it?

Why the result is different?

How to set values of ( SCLDEL SDADEL SCLH SCLL )? It will be great if you give a formula to understand instead of reference which I can't understand it.

[Foued_KH · Accepted solution]

Hello @AOmar.2​ and welcome to the Community :D

I suggest you look to the Reference manual (RM0316) in Sections for more details:

• I2C timings
• 28.4.9 I2C_TIMINGR register configuration examples
• 28.7.5 Timing register (I2C_TIMINGR)
• 28.7.6 Timeout register (I2C_TIMEOUTR)

STM32F303xB/C/D/E, STM32F303x6/8, STM32F328x8, STM32F358xC, STM32F398xE advanced ARM®-based MCUs

Foued