STM32 MCUs Products

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Forum Posts

DMA Memory To UART5

Posted on June 25, 2012 at 15:38 Hi, I'm having an issue setting up a DMA to transfer data from a 2 element uint8_t array to UART5. The code works, but the UART only sends out the first byte and having tried lots of different thing...

dclark9 by Associate II
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  • 29 replies
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Don't working USART in STM32F051K8U6

Posted on May 30, 2016 at 21:58Hello. I'm use MCU STM32F051K8U6 for simple devices.I'm had a problem when using the UART.If i'm initialize USART thus (with SPL):It freezes the microcontroller, and the program is not executed.void GPIO_Initialization...

s9 by Associate II
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  • 5 replies
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Keil uvision debug script

Posted on May 12, 2014 at 14:19Hello,is there a possibility to make debuging scripts for STM32 processors in Keil uvision MDK? 

hospodar by Associate III
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  • 2 replies
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STM32L1 internal EEprom (user data in NVM)

Posted on May 29, 2016 at 23:18In STM32L1 how works the internal small EEPROM? (The Data EEPROM memory block. It contains user data)For example the Page 0 0x0800 0000 - 0x0800 00FF = 256 bytes, to use it must be first erased?For write is DATA_EEPROM...

Questions on what's happning before main() is called

Posted on June 01, 2016 at 16:19 I am working with the STM32F405/STM32F407 microcontrollers.I am trying to understand what's happening inside the microcontroller before main() is called and I would like to get rid of as much as possible to minim...

arnold_w by Senior II
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  • 4 replies
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Step+Dir Interface to STM32F4

Posted on May 30, 2016 at 05:42Hello, i am in the path of developing brush-less DC servo system for CNC mill, Because i will use motor encoder, as well as position quadrature encoder, i need ability of hardware tracking step and dir impulses. It wo...

HardFault at ORR instruction, what is happening?!?

Posted on June 02, 2016 at 00:28Hi,I am trying to get STM32CubeMX + arm-gcc + Nucleo-073RZ to do things. It won't.I can see in my debugger and lst file that08000990 <SystemInit>:SystemInit():/Users/dongfang/workspace-arm/stm32cube-playground/Nucleo0...

soren by Associate II
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  • 1 replies
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STM32F100C8T6B (Rev. Z) problem

Posted on June 01, 2016 at 16:35Hi all. I can't get more far than reset handler. On a first instruction I'm failing into HardFault_Handler. SCB->CFSR says  STKERR and IMPRECISERR.I see it only in STM32F100C8T6B. They all have rev. Z. All another chi...