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SysTick with custom HID problem

gurnett2
Associate II

‎2013-04-03 03:32 AM

Posted on April 03, 2013 at 12:32

Hello

I have a problem with a SysTick working together with a custom HID (STM32_USB-FS-Device_Lib_V4.0.0).

I am running at 72 Mhz, and if I don't init the USB my SysTick irq is firing every ms as I expect. However, if the usb is initialised, the SysTick firing rate drop by about a factor 8-9.

I'm pretty sure this is a trivial mistake, but I can't seem to find it.

Thanks

Michael
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gurnett2
Associate II

‎2013-04-03 05:09 AM

Posted on April 03, 2013 at 14:09

My mistake

forgot to clear DMA1_FLAG_TC1 properly, which caused the problem

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