~ruther/stm32h747i-disco-usb-image-viewer

ref: 079ff751c0e9b65d936aa656e697257faebbb871 stm32h747i-disco-usb-image-viewer/tests/device_descriptor/delay.h -rw-r--r-- 93 bytes
079ff751 — Rutherther feat: implement cdc application layer, fix enumeration 6 months ago 
                                                                                
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#include <stdlib.h>
#include <stdio.h>

#define DELAY_US(x) printf("Waiting for %d us.", x);
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