STM32 MCUs Products

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Forum Posts

Accessing functions from within interrupts

Posted on April 13, 2018 at 02:37I would like to access a global object in my main.cpp from stm32l0xx_it.c.In particular, I've created a LED object with a member function called update(). I'd like to be able to run the update function from within a ...

Additional 300uA drain after flashing

Posted on April 13, 2018 at 15:13Hi everyone,I'm hoping someone can shine some light on some behavior and perhaps offer a solution.After flashing our board which has a STM32L443VC I'm seeing approximately 300uA more of a load from the MCU than I exp...

STM32F407 DMA2 Repeated Disable and Enable Fails

Posted on April 12, 2018 at 03:22 Hi, I'm using STM32F407 in my project and I use DMA2 on USART1 RX/TX. Since my TX packet length changes almost every time, I'd have to disable DMA, reconfigure it to the correct data length, and enable DMA. I...

Josh Yu by Associate II
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Saving data from Adc to SD card

Posted on April 12, 2018 at 17:13Hello everyone,i've been trying to save adc values into a .txt file or .CSVthey both work fine, but i can't finda way to keep saving the current data directly 'f_write(&MyFile, msg, sizeof(msg), (void *)&byteswritten...

Resolved! Issues when setting SWJ_CFG in AFIO->MAPR to SWJ_NOJTAG

Posted on October 07, 2016 at 08:39I'm using the STM32F103. Setting the controller to __HAL_AFIO_REMAP_SWJ_NOJTAG on startup. Which means I want to use only the SW pins and the port pins PA15, PB3 and PB4 should be normal IO pins. I observed the fol...

kraske by Associate
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Resolved! CUBEMX 4.25 error with keil 5

Posted on March 16, 2018 at 09:07I generated a project with cube mx version 4.25 and I have the attached error inKeil Microvision 5.The project is a simple example of STM32f091 (all default)I get the same error in all the projectsThanks for help

X-CUBE-MCSDK 5.0.0

Posted on March 19, 2018 at 12:19Hi,I'm developing a motor control application for STM32F103 and would like to use MCSDK. But in version 5.0.0 this processor is not supported (yet), dose anyone know release date for 5.1 (that will have support for F...

STM32CubeExpansion_LC_Sensor_L4_V1.0.0 Problem

Posted on April 13, 2018 at 07:02Hello, i try to implement the STM32CubeExpansion_LC_Sensor_L4_V1.0.0 in my nucleo -L476 board,i completely port the SW4STM32 to truestudio without error,however, the program run into infinite loop.section    .text.De...

FLast.11 by Associate III
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access violation at 0x40023800

Posted on April 12, 2018 at 14:47I am using stm32f446zet6 and IDE keilv5 for a project . When debugging it shows the following error ,*** error 65: access violation at 0x40023800 : no 'read' permission*** error 65: access violation at 0x40023800 : n...

Statup Source Code Error, Please help me

Posted on April 13, 2018 at 06:01I am using the IAR compiler with the Cortex-M3 EVB board. I am trying to upload a simple USART Firmware on the EVB board using the Standard Peripheral Library. If you add a file to the startup code file (even though ...