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What library should I use for not have any compiler error?
It looks like you're using the Peter Fleury LCD library:   as a starting point. But that requires a fair bit of adjustment and...
Saturday, 9 December 2017 - 00:48
Problem with strcasecmp()
Obviously the intent is to "skip CR or LF characters". But if you aren't checking what the actual values are, who knows?   Basic advice for debugging: If your code is not...
Saturday, 9 December 2017 - 00:45
Problem with strcasecmp()
Two obvious things. One, you're allocating a 300-byte buffer to use, and that's large enough to be a likely problem on machines with only 2K or so of memory. The other is, you've...
Friday, 8 December 2017 - 16:24
Problem with strcasecmp()
I assumed it was declared in sim300.c, but since we can't see it, we don't know what type it has, or how much storage it has, or anything else. There's a lot of things here that...
Wednesday, 6 December 2017 - 22:12
Problem with strcasecmp()
The include thing doesn't seem entirely likely to be relevant, if things are building at all it's probably unidiomatic but not breaking anything.   What you probably need...
Wednesday, 6 December 2017 - 21:23
atmega32u4's "six" programmable endpoints
That does sound like the 32u4 may well only have six endpoints available. (Note that it can definitely use more than three addresses, you can have things on all of 0-5).  ...
Wednesday, 6 December 2017 - 14:41
Newbie questions: When, if ever, do I need a high-voltage programmer?
Yes. In fact, I've already done exactly that, hooked up an oscillator and caps to the XTAL1/XTAL2 pins of a 328 to flash it to 8MHz internal so I can use it outside the Arduino.
Sunday, 3 December 2017 - 23:22
Newbie questions: When, if ever, do I need a high-voltage programmer?
Thanks, that helps a lot. I will probably ignore the question for now, I usually have at least one spare chip I could use in the rare cases where I'm messing with fuses at all.
Sunday, 3 December 2017 - 22:18
GCC and Atmel Language manual.
Recognizing that this is an old topic, I feel I should post the current link:   and really, the one you probably want is:  ...
Sunday, 3 December 2017 - 21:57