No video :(

Getting started with AVR and Linux command line tools

Подписаться 1,4 тыс.

Просмотров 9 тыс.

50% 1

In this video I describe how to compile and upload a small piece of code onto an ATmega32U4 using the avr-gcc toolchain and only command line tools under Linux.
I use an Ubuntu installation in the Linux subsystem on a Windows 10 computer.
Tools needed:
$ sudo apt-get install binutils gcc-avr avr-libc uisp avrdude flex byacc bison

Опубликовано:

29 авг 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 13

@johnnybravo2342 3 года назад

thank you for that video! i needed this for a long time. it's so hard to find the simplest examples sometimes

@ivanm.3522 3 года назад

Very nice video Uwe! Straightforward and well explained. Many thanks thumbs up and subscribed.

@meoDomicio 2 года назад

thank you for that video, is good for my

@silenthunter0019 3 года назад

thank you

@user-fe5np7xq7l 2 года назад

Thank You!

@tester428 2 месяца назад

Hii could you please provide a tutorial on how to change the cursor pointer to the one you use in this video ?

@uwezimmermann5427 2 месяца назад

luckily I don't have to: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-kwSqtNvT7to.htmlsi=pu2uKx6T8CqcjTRU&t=487

@samferrer 3 года назад

I wonder if this program would do the same (kind of task schedule oriented): #include #include int main() { DDRE = 0b01000000; int i = 0; while(1) // an iteration per millisecond { switch (i) { case 0: PORTE = 0b01000000; break; // task at time slot 0 case 100: PORTE = 0; break; // task at time slot 100 } i = (1 + 1) % 1000; }

@uwezimmermann5427 3 года назад

Your program is built around a state-machine and in principle it will blink the LED in a similar way. But there is nothing in your code which takes care of the exact timing. At a clock frequency of 8 MHz as in our case, one iteration inside your while-loop will be much faster than 1 ms. Including the overhead of the 16-bit compare/add/modulo operations, I would estimate something like 20-25 instruction cycles per turn, this would mean 8 MHz/25=320000 loops per second or 3 µs per cycle, 300 times faster than your assumption. We could test this in one of our lab sessions. Also my goal with this short video - possibly not only for the audience in our course - was to keep the code as simple as possible. The switch-case-statements are something I personally like but consider an somewhat advanced knowledge. A purist programmer would perhaps point out that a switch-case-statement never should miss, every possibility should be covered - if nothing else by a default-clause...