STM32 MCUs Products

ADC measuring internal reference gives strange results for shorter sample times. Is there a way to measure the internal reference with sample times of 1.5?

Setup: 48MHz CPU clock, ADC clock = CPU/4. For various sample times, I get internal reference measurements of: 1.5 - 1925, 7.5 - 1760, 13.5 - 1420, all other sample times give 1550. I thought sample times were to cope with high impedance sources. ...

STM32L476RG using internal PGAs with ADC in differential mode

Hi,I am using the STM32L4 ADC in differential mode (PC0 and PC1), to capture the dual end output of a tuner which provide a 600 to 800KHz signal. The tuner maximum output is 2.0V PP, and the STM32L4 differential input is rated for 6.6V PP (-3.3V to +...

Hello , I want MAC ID for STM32. How to get that? To whom I should contact regarding this?

how to use extern "C"

hi everyone want to use interrupt in main.c i am using extern "C" for this purpose but its couldn't compile/* USER CODE BEGIN 4 */ extern "C" void TIM2_IRQHandler(void) { // Handle update interrupts (update interrupt flag is set) if (TIM2->SR & TIM_S...

High delay of Timer triggered ADC conversion: should I enable ADC?

Hi everyone,I'm trying to perform some ADC conversions triggered on a timer rising edge, this timer can be up to 1MHz.I set up everything in cubeMX and can perform those conversions, but the delay is too high for my application.My current problem is ...

in stm32h7, access to battery backup ram inside stm chip sometimes doesnt work. on nucleo board. when clk turned on, battery ram stops working. thanks

battery backup ram works after power on. stops working ( get hard fault ) upon access to variable in battery backup ram. battery backup ram works when developement system dissconnected. sporadicaly stops working when ijet or segger connected to nu...

STM32 External Loader

Hello everyone,I am developing a project with STM32F750N8 using Keil IDE, JLink Edu debugger.Also using W25Q128 QSPI Flash. I want to load my hex to the qspi flash and run the software from there (with memory mapped mode).I build a BSP Library that c...

ADC_RegularConversion_DMA project modification question.

Hi everyone.I have edited my original question, it seems I haven't the permissions to delete. I found the original issue to de data alignment.Thanks

stm32f030c8 not communicating with rc522 rfid reader.🤦�?♀�?

here's my initialization code for spi and rc522:/* USER CODE BEGIN SPI1_Init 1 */ LL_SPI_SetRxFIFOThreshold(SPI1,LL_SPI_RX_FIFO_TH_QUARTER); /* USER CODE END SPI1_Init 1 */ /* SPI1 parameter configuration*/ SPI_InitStruct.TransferDirection = LL_SPI_F...

STM32 timer ETR mode + slave reset

Hi,I need to periodically count the number of pulses of signal A between two rising edges of signal B. For that I use a timer (TIM2) in ETR mode (signal A is the ETR input), input capture on signal B and slave trigger+reset on signal B rising edge.No...