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DevHeads IoT Integration Server•2y ago•
3 replies
Sterling

Configuring USB CDC Rx Interrupt for STM32-F446RE (Nucleo)

I am seeking guidance on configuring a USB CDC Rx interrupt to handle data reception for the STM32-F446RE (Nucleo). At present, I utilize
int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
int8_t CDC_Receive_FS(uint8_t* Buf, uint32_t *Len)
in a loop to receive incoming data. However, due to the transmission of substantial amounts of data, an interrupt-based reception technique is necessary. Any assistance or advice would be highly appreciated.
Solution
Hey @Sterling
The function is a callback that is already being called in an interrupt context by the USB stack. You should not be calling it in a loop.
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