STM32 MCUs Products

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Forum Posts

Bug report in cube MX code generation

Posted on February 16, 2018 at 09:57Hello,I use the cubemx v4.24.0 in AC6' workbench (windows version) for generating LL ADC code, and the channel selection code seems to be wrong, because it overwrites CHSELR for each selected channel, which ends w...

stm32f070 wont connect to st link

Posted on August 12, 2017 at 03:05I am connecting a standalone board with a STM32f070 to a ST Link v2, but regardless all my efforts ST Link is unable to detect the MCU and I can not program it, I can not found any information about this issue, it s...

STM32L476 RTC with SuperCap

Posted on January 14, 2018 at 10:34Hi everyone,Should I connect a any series resistor to the super capacitor while using a super capacitor that is 1F 5.5V instead of a battery? Or I can connect directly the capacitor to VBat pin?#power-backup-superc...

Bug in STM32CubeMX Initialization Code for RTC

Posted on February 16, 2018 at 06:26I've been developing code for a project using the STM32CubeMX initialization code for the Nucleo-L476RG. I was previously using an older version for code generation, and recently upgraded to version 1.11.0 of the ...

Flashing MCU using another MCU

Posted on February 14, 2018 at 22:26Hello everybody I am working on a design using STM8S103F2P6TR and will produce a big quantity of it so I am thinking to make another portable design using STM32F407VGT6 as a flasher to program the units after manu...

Resolved! Does anyone know how to find out the Core revision number?

Posted on March 12, 2017 at 17:12Hi. I have an STM32F746 Discovery board purchased late last year from Digi-Key. It uses a STM32F746NG chip. I have not found any documentation anywhere that defines which revision of the Cortex M-7 core it uses. I am...

Resolved! STM32L476 LPTIM1 counter register

Posted on October 06, 2017 at 21:42I know the counter register read is not very reliable:Bits 15:0 CNT: Counter valueWhen the LPTIM is running with an asynchronous clock, reading the LPTIM_CNT register mayreturn unreliable values. So in this case it...

STM32L011 I2C timing calculation

Posted on February 15, 2018 at 20:15Can anyone help to explain the method to calculate the I2C timing register?I am trying to come up with a value for 400KHz. I2C1 clock is from HSI16 which also has the /div4 enabled.I am very confused by the set up...

RTC Calibration Woes!

Posted on February 15, 2018 at 20:04Hi! Working with the STM32F746ZG RTC. Clock, Calendar, and wakeup interrupt working fine. Have Battery Backup for RTC. I'm trying to perform a Smooth Calibration which does work but I find that not all of the CALM...