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AVR is a 8- and 32-bit microcontroller core developed by Atmel. AVR was chosen as microcontroller for the popular Arduino SBCs.

1
vote
Please mind that your 'Question' is pretty open. The only real question I spotted in it was: "Should I start with AVR or PIC". I think that, with the knowledge of Arduino, it's better to go with AVR … Width Modulation", "Hardware debounce", U(S)ART, I2C, SPI. Try to find an interesting project, which will keep you motivated. The AVR is a bit more bare-metal coding. As you will have to set registers and ports directly. You might want to check some tutorials on it. And as always, have fun! …
answered Mar 4 '15 by Paul
7
votes
Not quite sure, just a fast guess. Maybe you should put the while(UDRE0 == 0){} inbetween sending characters. I believe it's to wait until one character has been sent. for (i = 0; i < strlen(ar); i++ …
answered May 2 '15 by Paul
0
votes
. I haven't tested the code, but I recon it would be this: #include <avr/io.h> #define F_CPU 16000000 #define BUAD 9600 #define BUAD_RATE_CALC ((F_CPU/16/BUAD) - 1) //Function definitions void …
answered May 4 '15 by Paul