About gbm

gbm · 2023-06-16

I found this problem with STM32L476 but I suspect it may be a general STM32 quirk.The manual does not list the minimum and maximum value of UART BRR register. While the minimum value of 0x10 seems to be quite obvious, the maximum correct value in the...

gbm · 2022-12-02

Looks like serious regression from 1.10.1. Steps to reproduce: Select STM32F401 or F411 MCU, Enable FreeRTOS. The generated main() function in main.c file does not contain the section creating the FreeRTOS objects (task, queues, etc.). Instead, the c...

gbm · 2022-10-27

When creating project using Board Selector, Nucleo-C031C6, the incorrect MCU pinout definition is created with two errors: I2C1 is activated and pins are assigned for it and USART1 is initialized using PB6&PB7 instead of USART2 with pins PA2&PA3,whic...

gbm · 2022-04-16

USART baud rate related stuff has a long history of errors in both the STM32 documents and sample code. Looks like in the past 4 years some of the problems were corrected but there are still some strange and incorrect pieces.STM32F10x manual, RM0008 ...

gbm · 2022-03-10

I notice that the updated versions of STM32 Keil packs contain an error influencing project configuration. The problem was already signaled on STM32 forums but the root case was not identified (see for example https://community.st.com/s/question/0D53...

gbm · 2024-06-21

Look for the problem in the routines called from LPTIM ISR.

gbm · 2024-06-12

DOEPINTx register, bit 15 - STPKTRX.

gbm · 2024-06-12

No easy answer but my USB stack source might be helpful:https://github.com/gbm-ii/gbmUSBdeviceThere are some undocumented bits in control registers. Also not the non-obvious handling sequence of set_address request in OTG core.

gbm · 2024-06-06

SREC file is a text file. It's size is a little over 2 times the programmed Flash footprint.

gbm · 2024-06-03

The answer is big YES. Officially, RCT is a simple superset of of RBT. You may simply forget the extra memory.

User statistics

User Activity

UART information missing from RefMan, HAL_UART_Init() error

CubeIDE 1.11 error while creating STM32F4 FreeRTOS project

CubeMX 6.6.1 + STM32C0 package 1.0.0 incorrect config

Errors in UART baud rate sections of Reference Manuals

New versions of Keil MDK-ARM STM32 packs - project configuration error

Re: Wrong PC (progam counter) when exiting ISR

Re: How to perform a control IN endpoint transfer with the USB OTG FS core?

Re: How to perform a control IN endpoint transfer with the USB OTG FS core?

Re: Compiled code size and flashed code size are different in STM32CUBEIDE v1.15.1

Re: Firmware Question after changing from STM32F401RBT6 to STM32F401RCT6