STM32 MCUs

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Hello All,Test to create a new topic 😉  Best RegardsImen 1 1        

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Testing a board with STM32U5A5. VDD is 3.3VI have configured one GPIO as input with an external pullup to 3.3V through a 470k ohm resistor.The input reads high, but when I measure the input with a scope, I read 2.2V on the input, which is below 0.7VDD which is guaranteed as V_IH, but above 0.5VDD+0.2 which is specified by design as V_IH.Is 470k ohm too high of a pullup resistance?

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When using PLL3Q as input with a frequency of 32MHz for USBPHY I have a RCC_CCIPR1 register initialized at value 0x2a00 when entreing USB_CoreReset function that is not correct (should be 0x2b00).

This is not a question, but a solution to a problem that took me forever to solve. This may be evident to many, but it was not to me, soI hope this will save others (and my future self) a lot of time...I was trying to implement a custom bootloader, where I could not even get the minimal implementation working: a slowly blinking LED when doing nothing and staying in the bootloader, or a quickly blinking LED when jumping to a different application.The issue is that this is tricky for the STM32F030/070 on which I am developing, because it does not have a VTOR register and the few code examples I found did not work, or did jump, but interrupts stopped working.The bootloader only needs to jump to the new reset vector:#define APP_ADDRESS 0x08004000Uvoid JumpToApplication(void) { __disable_irq(); if (*(uint32_t*)(APP_ADDRESS + 4) == 0xFFFFFFFF) { return; // invalid reset handler } uint32_t jum

This is not a question, but a solution to a problem that took me forever to solve. This may be evident to many, but it was not to me, soI hope this will save others (and my future self) a lot of time...I was trying to implement a custom bootloader, where I could not even get the minimal implementation working: a slowly blinking LED when doing nothing and staying in the bootloader, or a quickly blinking LED when jumping to a different application.The issue is that this is tricky for the STM32F030/070 on which I am developing, because it does not have a VTOR register and the few code examples I found did not work, or did jump, but interrupts stopped working.The bootloader only needs to jump to the new reset vector:#define APP_ADDRESS 0x08004000Uvoid JumpToApplication(void) { __disable_irq(); if (*(uint32_t*)(APP_ADDRESS + 4) == 0xFFFFFFFF) { return; // invalid reset handler } uint32

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