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Forum Posts

X-NUCLEO-IKA01A1 Electromyogram problem

Posted on April 19, 2017 at 16:54Heys everyone,I'm new to the ST Community, so hi ^^. Anyways, I'm working on with the X-NUCLEO-IKA01A1, and I'm trying to use the Instrumentation Amplifier that the X-NUCLEO Board has; therefore I went and looked for...

Resolved! STM32F103 Timer Capture Problem

Posted on April 19, 2017 at 11:43In a project I'm attempting to measure 4 frequency channels (range 10 to 500 hz) using TIM3 in the STM32FDuring development I noticed the occasional missed capture event, or double capture events. I didn't pay much a...

Jeroen3 by Senior
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Battery reverse current

Posted on April 20, 2017 at 16:44We have a custom STM32F769 board with a Lithium Manganese Dioxide CR1220 non-rechargable coin cell connected to Vbat. We are concerned that there may be an issue with this as there is no reverse charge protection cir...

DMA problem - SD Card with FatFs and MSD USB

Posted on May 04, 2016 at 19:29 I am implementing FatFs and MSD on SD Card using HAL libraries from STM32CubeMX.Everything is working perfectly but only if I not set up a DMA for SD card. It get stuck in while loop: /** * @brief SD DMA tr...

[STM32F7] Use LSE as Timer source

Posted on April 20, 2017 at 13:42I'd like to use the LSE to clock an internal Timer. I had this implementation in some L1 devices, but I think this feature is missing with F7. With L1 I had TIM10 with ETR2 as clock souce + ETR remaped to use LSE.In...

Resolved! Please tell me how to calculate the dead time or determine dead time in this figure. 

Posted on April 16, 2017 at 17:39Thank you for your patronage.  Please tell me how to calculate the dead time or determine dead time in this figure. I understand thatHCLK = 84MHzPrescaler = 83Counter Period = 99Pulse = 20Dead Time = 150so frequency ...

Ken Inoue by Associate III
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How to accelerate a running average ?

Posted on April 13, 2017 at 09:10Dear Community,to realize a nearly ideal low pass (without phase shift) – filter I need to perform a symmetric running average operation using the STM32F4 core. This operation takes 3000 sampled points of raw data an...

jogerh by Associate II
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Resolved! HRTIM does not work.

Posted on April 18, 2017 at 05:08Thank you for your patronage.  HRTIM does not work. I set up config as shown below.And, I wrote a program as shown below.But HRTIM does not work. #hrtim

0690X00000606nNQAQ.png 0690X00000606nOQAQ.png 0690X00000606ncQAA.png 0690X00000606nXQAQ.png
Ken Inoue by Associate III
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CubeMX clock code generation bug (stm32f103c8t6)

Posted on March 22, 2017 at 22:46Hi,I'd like to report a potential bug in the code generation / clock initialisation code for the STM32F103c8t6.Cube version 4.2STM32CubeF1 Release 1.4.0Keil uVision 5.22I have attached the very simple project and cub...

How to use ARM_MATH FFT

Posted on April 20, 2017 at 10:55Dear Community,I want to use the arm package: arm_cfft_radix4 to perform a 1K FFT repetitively in a loop on a STM32F407 device. To do so I predefined: __FPU_PRESENT=1,ARM_MATH_CM4 and added the library arm_cortexM4lf...

jogerh by Associate II
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  • 2 replies
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