About Fran9

Fran9 · 2024-05-08

Hi everyone,As commented in the title, in our system we have two ways of working. At low speed (120MHz) and at high speed (480MHz). When reading the ADC3 (temperature sensor) depending on the mode (low or high speed) I get different values. When I wo...

Fran9 · 2024-05-10

I measured the surface temperature.I have been modifying the chip temperature by external means so I could see how it varied. In this way I was able to make a small characterization of the temperature and understand the results I was seeing.

Fran9 · 2024-05-10

Hi,Yes indeed I'm working at 480 MHz all the time.In the end, with some tests I have been able to verify that the measured temperature is correct.What must be taken into account is that the temperature measured is the internal temperature of the chip...

Fran9 · 2024-05-08

No! I'm hardcoding to work at 480MHz, no sleep.I'm pending to measure the temperature with an external device.

Fran9 · 2024-05-08

Yes I though the same as you two. But actually the freq of the ADC is the one defined here: isn't it? hadc3.Init.ClockPrescaler=ADC_CLOCK_SYNC_PCLK_DIV4; So, I'm defining as a fADC = fAHB/4 = 60MHz (when in high speed). And if I'm in low speed 15MHz....

User statistics

User Activity

STM32H7 on-chip temperature sensor read different values when modifying system clock

Re: STM32H7 on-chip temperature sensor read different values when modifying system clock

Re: STM32H7 on-chip temperature sensor read different values when modifying system clock

Re: STM32H7 on-chip temperature sensor read different values when modifying system clock

Re: STM32H7 on-chip temperature sensor read different values when modifying system clock