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Resolved! stm32f407vg spi1 data register stay 0xff

Posted on May 02, 2017 at 10:53hi, i am new to community.....i have a stm32f4 discovery board with sym32f407cg microcontroller i tried to test spi communucation of the microcontroller with onboard accelerometerbut there is one or more problem that i...

Reading RTC-registers stops DMA transfer on STM32L051

Posted on March 03, 2017 at 07:00I am using ADC with DMA on STM32L051. Conversion time is 50us (20 000 conv. per second). When I read RTC-registers (RTC_SSR, RTC_TR, RTC_DR) sometimes the CPU freezes for approx. 113 us causing ADC overrun and loss o...

STM32F030 - problems with ADC conversion time

Posted on May 06, 2017 at 13:31 Hello, I need help finding a problem. I have been studying this situation for some time and I can not solve it. The MCU used is the http://www.st.com/content/ccc/resource/technical/document/reference_ma...

trasfert data from DCMI to SRAM using DMA

Posted on May 06, 2017 at 16:24Hello,i'm using STM32F4Discovery with the OV7670 camera , i'm trying to get a QVGA picture (320*240) RGB (each pixel is coded in one byte) and then i'll try to send thses picture to a server using SIM900, the probleme ...

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SWD debug failure in High voltage situation

Posted on May 06, 2017 at 05:12Hi,    I am using the chip STM32F405when developing a power converter. It is a buck converter.     When the input voltage is below 25V, I used the keil to debug the chip normally, and monitor the variables.However, whe...

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ADC and DMA issues

Posted on January 20, 2017 at 14:55Hi all,I’m using stm32cube mx to set up a project for my STM32L4 discovery board. Please note that I’ve removed a component and have patched pins PC0, PC1 and PC2 to analog voltages for sampling. I’m using MC...

capture image with STM32F4 to OV9655

Posted on May 06, 2017 at 09:17I want to capture image with camera like OV9655 I have looked for some of tutorial however one of these use OV9655 with stm32f407 and in this tutorial camera show enviroment. can anybody help me in that issue. it is my...