When using the optimizer, in a loop like the following one: My program doesn't recognize a variable updated within an interrupt routine Why is assigning ports in a 'chain' a bad idea?.On a device with more than 128 KiB of flash, how to make function pointers work?.Why are some addresses of the EEPROM corrupted (usually address zero)?.What pitfalls exist when writing reentrant code?.Why is the compiled code so big? Why does my code not work? How do I perform a software reset of the AVR?.How to add a raw binary image to linker output?.Why are there five different linker scripts?.Why are interrupts re-enabled in the middle of writing the stack pointer?.Which AVR-specific assembler operators are available?.Why have 'programmed' fuses the bit value 0?.Why are (many) interrupt flags cleared by writing a logical 1?.What is this 'clock skew detected' message?.Is it really impossible to program the ATtinyXX in C?.How to detect RAM memory and variable overlap problems?.Why does the compiler compile an 8-bit operation that uses bitwise operators into a 16-bit operation in assembly?.Why do all my 'foo.bar' strings eat up the SRAM?.My UART is generating nonsense! My ATmega128 keeps crashing! Port F is completely broken!.How do I relocate code to a fixed address?.How do I put an array of strings completely in ROM?.

What registers are used by the C compiler?.

How do I pass an IO port as a parameter to a function?.

How do I trace an assembler file in avr-gdb?.Why does the PC randomly jump around when single-stepping through my program in avr-gdb?.How do I use a #define'd constant in an asm statement?.Why do some 16-bit timer registers sometimes get trashed?.Shouldn't I initialize all my variables?.How to permanently bind a variable to a register?.I get 'undefined reference to.' for functions like 'sin()'.My program doesn't recognize a variable updated within an interrupt routine.

Does compiling code take a lot of ram