STM32 MPUs Embedded software and solutions

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Resolved! In the STM32MP157 I am trying to program an interrupt every 100 us using timer 14. It looks like the code generated is correct, but the result is not correct. It looks like the DiV4 has no effect. The timing is the same as no divide.

Looking at the clock in the MX Device Configuration Tool it says 204 to APB1 Timer Clocks (MHz).To get to 10000 Hz I have to divide 204 MHz by 20400. Fortunately there are a bunch of ways to do this. But on the first try I tried Prescaler 51Counter ...

KiptonM by Lead
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Resolved! USB2 - USB OTG (on stm32mp157x-DK2) - does it need Vbussx or CCxx connected to function as USB mass storage in U-Boot ?

I have custom stm32mp1 board and when running it as USB mass storage in U-Boot (ums 0 mmc 0), the USB driver is not detected nor by Linux nor by Windows. I am also attaching shematc comparison of eval-board VS my custom board. Also the USB-ORG is wor...

0693W00000HprgoQAB.png 0693W00000HprgZQAR.png

Resolved! How to set VSW domain for "stm32mp151c" custom board as openstlinux dts (for using RETRAM)

Hi All.I want to use the battery to power the RETRAM so that the contents of the RETRAM can be preserved even if the board is not powered.To do this, I connected the battery to the VBAT pin and set the "PWR_CR2_RREN" value to the "PWR_CR2" register o...

Machilus by Associate III
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  • 5 replies
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