Search found 2 matches
- Mon Jun 27, 2011 8:17 am
- Forum: V-USB
- Topic: Code in for loop outside of if (usbInterruptIsReady()) {...}
- Replies: 1
- Views: 2361
Code in for loop outside of if (usbInterruptIsReady()) {...}
Is it not OK to do work in the for loop outside of the if (usbInterruptIsReady()) code block? I have code between wdt_reset() and usbPoll(). Sometimes the device enumerates correctly but usually not. Why doesn't this work or why shouldn't I do this? Does the amount of work done there matter? Do I ne...
- Mon Jun 13, 2011 11:12 pm
- Forum: V-USB
- Topic: Using LEDs for Level Conversion
- Replies: 0
- Views: 4330
Using LEDs for Level Conversion
Sparkfun's AVR Stick uses blue LEDs to drop the 5V output from the microcontroller to ~3.3V instead of zener diodes. The LEDs make it easy to tell if the device enumerated correctly. Plus blue LEDs are available at Radio Shack, but 3.6V zeners are not. However this level conversion trick isn't menti...