STM32 MCUs Products

How do I create an Interrupt for UART_FLAG_TXE?

I have a STM32L081KZT and I am using the LPUART.I want to create my own Interrupt (handler) based on UART_FLAG_TXE. So basically a function that gets called whenever the UART_FLAG_TXE bit is set.In the GCC compiler manual I have found this:void f () ...

Problem with configuring/transferring an SPI with DMA (And CRC).

I can't get a data transfer over the SPI bus with my currently implemented code. I can see the CLK and CS but there is no output via MISO (only zeros are probably transferred). If I execute a transmission manually via "LL_SPI_TransmitData16", I can s...

What would be a modern equivalent to an STM32F103, preferably in a 48 pin package, and which wouldn't require too many alterations to existing code and PCB?

I've spent the last 2 years developing a product using an STM32F103, but I've recently discovered that the ones I've been supplied with are fakes, which have a tendancy to blow up :( It seems as if no genuine F103s are available now, so either I have...

STM32F4 TXE flag not activating

We have a very simple, blocking, UART transmit routine, which writes a byte and waits for TXE to become active. Every so often, and I mean something like 1 in 100,000 or more calls, it gets stuck at line 3 of the code pasted in below; TXE never becom...

STM32H7 chip shortage - when are we going to get any version of STM32H745/755 ???

I am starting layout with a STM32H745B (208 LQFP) next week for a core part of our new product line. I need a small quantity for prototyping - 10-20 or so.Distributors are showing 52 weeks delivery for this and all H745 parts. Every version of H7 is ...

rg. ST32F405 timer 8 does not count again after stopping it and writing the CNT Register on the fly. Alfter enabeling by software (TIM8->CR1 ||= 0x0001;) it stayt still and does not count again.

STM32 lower power consumption

Hi everyone, I need the lowest possible current consumption for my project. I need to power my MCU with external supply. Currently I have a Nucleo F401RE, which is not so good for low power applications it seems. It's connected to a X-NUCLEO-NFC04A1 ...

How to read values from external ADC of steval-stwinkt1b

STM32 RTC Backup registers are limited to 5 on STM32L151RBT6A device

We are using STM32L151RBT6A device. As per the specification we should be able to have access to 80bytes of RTC backup memory , but we are able to access only 20bytes of Backup registers memory. As per RTC backup registers description , for value li...

How to configure the NSS with software

I have the problem that I don't get the NSS configured correctly on my SPI transmission. I should get according to reference Manuel a NSS signal that switches just before the first bit and just after the last bit. I send several different data one af...