For cycle-tight routines, embed assembly:
Before you begin coding, ensure the environment is correctly configured to talk to your hardware. CodeVision AVR 2.05.0 Professional
This saves RAM when you only need boolean flags. For cycle-tight routines, embed assembly: Before you begin
: Unlike many other compilers, it stores constant literal strings only in FLASH memory rather than copying them to RAM, saving precious memory space. For cycle-tight routines
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interrupt [TIM1_COMPA] void timer1_compare(void) // No need for global interrupt enable/disable – handled by compiler prologue/epilogue