STM32 MCUs Products

How to flash code into STM32 F401RE NUCLEO

SWD programming / debug interface on the STM32L073 - SWO??

The STM32 STM32L0x3 ref manual (RM073) and STM32L073 datasheet both show only 2 pins for the SWD programming interface:- PA13 (SWDIO) - PA14 (SWCLK)But the schematic for the STM32L073 Nucelo PCB shows PB3 connected as SWO.I dont see any reference to ...

Is it possible to send word(2 byte) data through UART when we set data wordlength of 8 bits???

Hi,I am using STM32F446ZE NUCLEo board. This board has many uarts and the Data Register is of 32 bit wide but maximum can be used is 9 bits, others are reserved.I have configured one UART channel UART5 and I am able to send series of byte data from m...

STM32 mktime() function has the 2038 year bug - where is source code?

Hi,We use an RTC and the POSIX function mktime() to convert a broken-down time into a time in seconds.Function prototype: time_t mktime(struct tm *tm);Problem is: this mktime() function has the 2038 year bug (see here https://en.wikipedia.org/wiki/Ye...

STM32H747I-DISCO working temperature

Hello, I want to know the working temperature of STM32H747I-DISCO. I need some STM32 device with a touch screen and a MCU in it. Is there a such device that can work in extreme temperatures such as (-40 Celsius to +60 Celsius) ? Thank you beforehand.

Attach a battery to VBat of a STM32F769NIH6 and get a UL logo on the product

Hello,We use a CR3032 Lithium battery to backup the clock and do intrusion detection during power down of the machine. We just connected VBat to the battery. UL told us we would need to protect the battery from reverse currents. For this we would nee...

Switch-case function two interrupt timer controlled Elapsed Call Back Function

Hello,I activated TIM6 and TIM7 in interrupt mode. In the elapsed call back function, I checked TIM7 with toggle function, and it works. But when I place switch-case related functions. It didn't work. Could you check it what I missing?Thank youvoid H...

CR95HF Anticollision ISO14443A Select 2: How to formulate the select cascade level 2 command?

Some info: Working with the CR95HF NFC Reader/writer. NFC tag is a Mifare Ultralight EV1, ISO14443A type 2 tag..My current anticollision sequence is as following (I send the commands with sendreceive of the CR95HF library):REQA "2607" ATQA "800544002...

EEPROM emulation on stm32h7

I believe I found a bug in the eeprom emulation for the stm32h7 in the \STM32Cube\Repository\STM32Cube_FW_H7_V1.3.0\Projects\STM32H743I_EVAL\Applications\EEPROM\EEPROM_Emulation\Src file eeprom.c. The EE_ReadVariable returns erroneous data. line 426 ...