STM32 MCUs Embedded software

How to jump into internal bootloader from software in STM32L552

Hi,recently I changed my microcontroller from STM32L152 to STM32L552. In L1 I was using the code in the following link to activate the internal bootloader.https://community.st.com/s/question/0D50X00009XkeeWSAR/stm32l476rg-jump-to-bootloader-from-soft...

Need help entering bootloader mode and USB DFU via user code

I have code that's meant to put an STM32L552xx microcontroller into bootloader mode after reset, so I can connect it to CubeProgrammer afterwards. I tested the code and while it does appear to be doing something, it isn't showing up in the device man...

SAI witH CODEC SGTL5000

Hello,I would like to know how to recover acquisition data and save the data to an SD card. I have this configurationI can compile and communicate with I2C to configure the SGTL5000 CODEC, I enabled DMA too. No errors for this moments.Thank you for...

STM32F205ZET + USB3320 (USB HS Host MSC)

Hello everyone,I'm working on a new project that needs USB communication between two controllers. My initial design was based on the STM32L552, but due to market availability, I had to switch back to the STM32F205Z. So, everything has changed includi...

Implementing OTA firmware update (ota0 and ota1 slots in flash memory ) with STM32L562VETQ

hi all,I'm using STM32L562VETQ.I'm new to such topics but i want to implement OTA firmware update in which i want to divide the flash into 2 sections (ota0 and ota1).*The process in short is as following:1- The MCU image/firmware (.bin file) will be ...

Can USB firmware or hardware cause a PWM signal to fall to zero, then back to its previous value without warning?

I'm working on a device that uses Pulse-Width-Modulation to control a DRV2605L LRA/ERM haptic feedback motor driver (datasheet found here: https://www.ti.com/lit/ds/symlink/drv2605l.pdf?ts=1683824689205&ref_url=https%253A%252F%252Fwww.ti.com%252Fprod...

Using STM32L552 Bootloader to flash new firmware via CAN-FD port only the first 512 bytes are changed

Using STM32L552 Bootloader to flash new firmware via CAN-FD port only the first 512 bytes are changed starting from address 0x8000000 even though Write Unprotect (0x73) and Readout Unprotect (0x92) has been sent according to AN5405. Erase Memory (0x4...

Resolved! How to setup CMSIS DSP on a ARM Cortex M33

Hello Everyone,I currently trying to implement a FFT by using the optimized functions from CMSIS library on a L5 MCU. The fact is that the M33 family seems not to be supported then I was wondering whether there's some kind of workaround in order to m...

Resolved! i have some doubt in stm32l552ret6 in sdmmc .i am working on fatfs using sdmmc but dma configuration is not given . i studied reference manual they say internal dma is are allocated in sdmmc .i dont know how can i enable the dma and sample code please

Can I get the CDC_Receive_FS () to read data character-by-character instead of the receiving the entire packet?

I am trying to transmit/receive data via Virtual COM port in the STM32L5xx using the USB CDC libraries. I understand that the entry to the CDC_Receive_FS() would give me an entire packet of data that I enter on the serial terminal. I would like to kn...