STM32 MCUs Products

Lockup problem. stm32L552

 Hi. I have stm32L552xx that i need to program using SWD. I have to halt core, write some code to RAM, replace PC and run core. If some valid code exists on flash i have no problem. It works perfectly. But if i try to do the same thing on empty flash...

STM32F4 freeRTOS gets stuck at xQueueSemaphoreTake while debugging using Visual Studio Code

Hi ,I am using Cortex debug extension in Visual studio code to debug my STM32F4 custom board . I am successfully able to debug using CubeIDE . But with Visual studio code the code hangs at the below line of queue.c . configASSERT(pxQueue->uxItemSize ...

How to implement SPR PPS Mode for the STM32F072 ?

Hi, I am using an NUCLEO-F072RB Board with an STUSB1602 Type-C Controller Expansion Board. My Goal is to program a Sink application which is able to use the PPS Mode. Furthermore I am using the STM32_MB1303_SNK_ONLY Project as a reference. My Questio...

STM32L151 SPI in interrupt mode unable to send from within interrupt

STM32L151 running at 32MHZSPI prescaler 256 running at 125KBits/sThe interrrupt does fire, but the first call (from non interrupt context) to get the transfer started HAL_SPI_Transmit_IT hasn't yet finished.Reason: In HAL_SPI_Transmit_IT __HAL_UNLOCK...

i have problem with this define in stm32F1xx_ll_gpio.h LL_GPIO_PIN_8 ((GPIO_BSRR_BS8 << GPIO_PIN_MASK_POS) | 0x04000001U) /*!< Select pin 8 */ this have a "or" with 0x04000001U , why?

What is the relationship between SPI clock and compiler optimization on STM32L0 ?

Hi,I'm working on a custom board where we integrated an STM32L010RB and I have verry weird behaviour :I need to use SPI1 peripheral and the clock signal is working as expected only if I enable optimization on the compiler settings.The MISO is OK. In ...

CPU test bug in the X-CUBE-STL (gcc)

Hi, this isn't really a question, but I figured I'd share back with the community (and hopefully bring the change back into ST's next release) on the X-CUBE-STL CPU test code.There are some instances, where the APSR has some bit set in what ARM docum...

using STM32H750XB ADC to read 4-20mA transmitter signal

Hi,How to connect to the preamp in order to use smaller R and reduce the voltage drop, the reference manual table below is not clear to me, particularly the internal column, please see figures below.