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Forum Posts

Dangerous bug in cmsis_os Message implementation?

Posted on March 23, 2017 at 14:12I think that there is dangerous a bug in the cmsis_os implementation, because when you create a queue (thru osMessageCreate), it creates a queue in FreeRTOS with the item size based in the item size configured by the...

HSYNC, VSYNC and Porch Calculations

Hi, I'm having a doubt related to HSYNC, VSYNC and Porch Calculations. I'm working with STM32F746G Disco Board and wanted to understand how these values are calculated. The HSYNC, VSYNC, HBP, HFP, VBP, VFP values mentioned in data sheet (https://cach...

PBU by Associate III
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Resolved! arm_bitreversal_32 - undefined reference in CMSIS DSP

I got the latest CMSIS from github and tried using the DSP code on a STM32H743ZI chip. I call three APIs which are:arm_cfft_f32()arm_cmplx_mag_f32()arm_max_f32()The code compiles fine with GCC but when it comes time to link I get a 'undefined referen...

DKref by Associate
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  • 3 replies
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STM32L476 Discovery USB CDC Class Source code or Example

Posted on September 04, 2017 at 16:24Hi,      I am using STM32L476 Discovery Board, as part of my project i need to enable USB OTG Port as CD C Class. Could some one help me in fining any example for USB OTG CDC Class for STM32L476 Discovery Board. ...

Sunny T by Associate
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  • 10 replies
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