STM32 MCUs Boards and hardware tools

Undocumented Pullup on Pin PB4/JNRST

Hi,as I see it here in my test PCB, the pin PB4 (JNRST for JTAG interface) seems to have an internal weak pullup during reset (I assume 40kOhm as NRST - an external 10kOhm will pull this pin down, but 100kOhm pull down does NOT work...).It is luckily...

Where can I get technical info about stencil thickness and openings for UFQFPN packeges?

Hello. I am building an application and planning on using the STLINK-V3SET to program and debug, but I can not find any reference which describes what pins to connect for the VCP_TX and RX pins from the programming header to the MCU.

I believe that I connect the following:T_SWDIO -> PA13T_SWCLK -> PA14T_NRST -> NRSTBut which pins on the MCU do I connect for the virtual comport? VCP_TX -> PA2 or PA9VCP_RX -> PA3 or PA10Also, SWO is not avaliable on the Cortex M0+? so is not conne...

Olimex STM32-P407 (STM32F407ZGT6): No device found on target (using ST-LINK/V2)

Hi everyone,I purchased several boards from Olimex (STM32-E407, STM32-P405, STM32-P407) and I am using the ST toolchain (STM32CubeMX, STM32CubeIDE, ST-LINK/V2, STM32 ST-LINK Utility). The purpose is just to blink a LED.For the boards STM32-E407 and S...

STM32 DISCOVERY DISC-1 LOSES PROGRAM AFTER POWER OFF?

Dear all!!I have a STM32 DISCOVERY DISC-1 and I have a problem. I created .hex file by KeilC and I programed this board by STM32 ST-LINK Utility and everthing seem be OK. But, when I turned off power and after that I turned on, board was not run. I c...

Error when trying to debug code on custom board with ST-Link V3

Hi,I have a custom board and am trying to debug live code on the target MCU with STM32CubeIDE but constantly getting the below error. I should note that I'm running Ubuntu 18.04 and have so far been successful in loading my built code with STM32CubeP...

ST-LinkUpgrade.exe tool brokes my Nucleo-F411RE board.

Indeed, I've just bought a brand new Nucleo-F411RE, connect it to my computer and sent a simple program that is doing a printf, so I can see it in the serial monitor ( I'm using MBed studio ).Then I've launched ST-LinkUpgrade.exe clicked on "Connect ...

Specification of STDC16/MIPI10 Connector on Stlinkv3xx

Hello,e.g. the BOM for the NUCLEO-G474RE does not list CN4, what the manuals call "STDC14/MIPI". It is obvious that is is a 14-pin, 1.27 mm pitch connector with polarization. However having exact specification would help to buy fitting mates.Some s...