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I'm working on a custom STM32U5 board and I'm trying to harden the system.I followed the AN5347 (https://www.st.com/resource/en/application_note/an5347-arm-trustzone-features-for-stm32l5-and-stm32u5-series-stmicroelectronics.pdf) in particular I foll...
I detected that transmitting 68 characters using RS232 at 460800hz takes 30-32000 tics to micro running at 480Mhz (HAL_UART_Transmit() takes 10 times more).Is there a method to disturb less to micro to make that transactions, perhaps using DMA?Is bet...
Hi,i am trying to figure out, why this interrupt is delayed that much.The com trigger comes from timer 1, which works as expected. Also the delay here is as expected too (apart from a 50ns deviation). There is a delay of 1.3us, from the time i can ob...
Hi All!I'm doing a project on the STM32F429 discovery board.In this project, I've used the TouchGFX.Also, I'm using the FreeRTOS. The idea is to read the Temperature sensors and read their values to the TextAreas in TouchGFX.TouchGFX was tested and w...
I am now designing a board for STM32F103VET6 and would like to use the FSMC to control the TFT LCD (320x480 resolution)May I ask if there are any notes or guides that mention the layout requirements? Such as what conductor impedance should the data l...
Hi,i know the gotcha about the late clearing. My interrupt (yes it currently useless) is so short, that clearing in the beginning would not work either, so i tried to implement a check for the interrupt flag. But with no success: It is fired twice.Is...
In order to mute the COMP for some time, I deactivated the interrupt with HAL_NVIC_DisableInterrupt(COMP_IRQn) and re-activated after a certain time respectively.In between I am in STOP2, some uA normal consumption.Now, while the interrupt is disable...
I'm trying to understand the following excerpts from the STM32L476 datasheet, which seem to contradict:In Table 20 - the absolute maximum voltage on the VREF+ pin is given as 4.0V (VREF+ I assume falls under the "other" category). Table 76 seems to i...
Hello,This is the first time I've designed a PCB with a stm32. I found a PDF on the internet that gives me an example of a Nucleo connection but I'm not sure if my schematic is correct.I don't need all the headerts or the usb connection (I'll be usin...
Hi all, I am running into an issue related to writing backup registers on the STM32U535xx MCU. When I compile my code with -Oz, the write fails, whereas with -Os, it succeeds. The relevant C code is pretty straightforward:LL_PWR_EnableBkUpAccess();LL...
