Change frequency on STM32F1

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1

I am using the STM32F1 ufo target. For testing purposes, I have to increase the frequency of STM target board from 7.3728Mhz to 72Mhz. I have seen this post:

STM32F3 clock frequency setup - #3 by coflynn

but I didn’t manage to follow the comments. Is there any standard flow to change the target frequency?

2

Hi,

According to the datasheet, the STM32F1 is limited to 24MHz: https://www.st.com/resource/en/datasheet/stm32f100cb.pdf. How to actually do this on chips that support it varies, since you’ll usually have to interact with the PLL to get up to that high of a frequency, and different chips have different PLL layouts.

Alex

3

Hi,

even if I wanted to raise the frequency to 24MHz I tried the following code

scope.clock.clkgen_freq = 24E6

the clock has raised but the acquisition does not work at all. I am getting the following error

WARNING:ChipWhisperer Scope:Timeout in OpenADC capture(), no trigger seen! Trigger forced, data is invalid. Status: 0b
WARNING:ChipWhisperer Scope:Timeout in OpenADC capture(), no trigger seen! Trigger forced, data is invalid. Status: 0a

5

See if this solves your problem: