Using PROGMEM on AVR Arduino Boards: Storing Constants in Flash to Free SRAM
Move constant strings and lookup tables to flash memory using PROGMEM and pgmspace.h, freeing scarce SRAM for runtime variables on AVR Arduino boards.
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Move constant strings and lookup tables to flash memory using PROGMEM and pgmspace.h, freeing scarce SRAM for runtime variables on AVR Arduino boards.