STM32 MCUs Products

__libc_init_array and STM32Cube hardfault

Posted on May 18, 2016 at 17:18Hello, I'm using an STM32F373C-EVAL and both the Atollic and AC6 IDE tool. When I try to import a project from the STM32CubeF3 V1.4.0 into both the IDE, I get a hardfault error during the __libc_init_array branch instr...

Why AC6 System Workbench inserts wrong startup file when creating a new project?

Posted on March 08, 2017 at 11:04Hi, I'm a newbie in the STM32 world. I have a lot of experience with Atmel ATmega and Xmega, and now I'm starting to learn ARM programming  using a nucleo-F446RE board and AC6 system workbench. I have a problem using...

Cause of STM32 internal flash memory wear

Hello, I would like some clarification on the internal flash memory wear of a stm32f722ret, which is rated at a minimal 10000 P/E cycles. An example:Suppose there is a flash block/page/sector with two bytes, A and B. Byte A gets programmed (for examp...

ADC INJECTED Wrong values reading

Posted on June 28, 2018 at 22:18Hello everyonei have a question, i am using 3 Ranks ADC injected mode for reading potential resistors..the problem is when ever i change one value it affects the other channel reading.examplechannel 1 reading is 1.3vc...

Why am i not able to switch on and off DMA randomly in STM32F051R6T6TR?

i'm trying to sample 40 adc values by using dma which means i have configure adc with dma(interrupt).Time period is also a constrain which means that a value is read after every 500us.After obtaining 40 readings ,i disabled both timer and dma then se...

How can I send interrupt command via CDC in STM32?

Posted on February 12, 2018 at 08:18CDC has 3 endpoints (IN, OUT and Interrupt). I have no problem with sending messages via IN and OUT (bulks), but there is a problem when I try use interrupt endpoint (0x82).  I created similar method to USBD_CDC_T...

Hi, I am using a STM32F042K6 MCU, I tried to initialize CAN_MCR from reset mode(0x00010002) to initialization mode(0x00010001). But I found I was not able to change its value by using the code: What could be the reason? Thanks, John

Timer3 runs 2x faster than expected

Posted on August 04, 2016 at 17:11Timer3 runs 2x faster than expectedI know what many readers are thinking but read onI set my STM32F746 (DISCOVERY PCB) for SysClk=216 MHzAHB Prescaler set to �1 thus HCLK = 216 MHzAPB1 prescaler set to �4 thus PCLK1...

hi, I have a few stm32f429i discovery old version, they work by USB connection to PC (for power) or by 5v external power supply(without USB connection )

recently I bought some new version (disc1) these start working by connecting USB,but they don't start by 5v external supply without USB connection to PC,I have to connect USB connection to PC and external 5v to proper pin then it starts working , now...