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Forum Posts

DMA Interrupt is not pre-empting USB interrupt

Posted on August 13, 2014 at 02:22 I am having some trouble getting the expected behavior out of my interrupts for DMA and USB. Using the STCubeMX HAL libraries, I have configured the interrupts as follows: /** * @brief System ...

USART bytes not received after a long transmission

Posted on August 12, 2014 at 16:00 Hey, I am trying to communicate with SIM900 GSM module using STM32F072RB chip on discovery board. I have written the code, which works fine for a few commands. I can transmit and receive small commands and I re...

Using exti alongside systick

Posted on August 13, 2014 at 00:24I have an exti set up on a gpio, which when triggered, sends a command to a peripheral. Within that piece of code is a small delay which makes use of the systick. It doesn't seem to work though. Guessing the issue i...

SPI slave receives only last byte

Posted on August 06, 2014 at 20:23 Background: - I have a system with two STM32F407 processors communicating via SPI. - I am using the HAL drivers generated by STMCube - They use the same firmware and adjust their behavior into master or sla...

Error in the type definition of ''GPIO_InitTypeDef''

Posted on August 12, 2014 at 20:55In stm32f4xx_hal_gpio.h (delete comment) typedef struct {   uint32_t Pin;   uint32_t Mode;   uint32_t Pull;   uint32_t Speed;   uint32_t Alternate; }GPIO_InitTypeDef;But to select the alternate function you need 64 ...

rm2399 by Associate III
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STM32F407 Discovery + HC-05 bluetooth + PC putty

Posted on August 11, 2014 at 15:16Hello,i am new to forum, and also to stm32 discovery. So please some patience :).I am trying to send from discovery to PC.Tried with USART6 + UART2USB and in putty on PC everything works.Then i connected HC-05 to sa...

0690X000006059WQAQ.png

STM32437I-Eval LCD icon display

Posted on January 17, 2014 at 16:03Hey, I am using the STM32437I eval board and trying to display my company log as icon on the LCD. The log is bmp file and 20*20 pixel. I used the emWin tools BmpCvt to transfer the bmp file to the C format, but th...

kqian by Associate II
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STM32F4 Discovery Demo code question

Posted on August 12, 2014 at 12:14Hello.I have medium knowledge of C/C++ (it was enough to make certain devices using Atmel AVR microcontorllers). Now I try to understand the Demo example of the STM32F4 Discovery. Is there some description of it?I w...

baev_al by Associate III
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USART 230400 baudrate in stm32L controller

Posted on August 12, 2014 at 11:44Hi , i am unable to obtain the 230400 baudrate. i am able to attaiin only 115200. please help me with the sample code . i am using usart3 of stm32l152xD controller #usart3 #baudrate #230400

amandeep by Associate II
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