Also it would be really useful if you could explain in detail what exactly does each of the keywords F(), (PGM_P)F, PSTR, const PROGMEM.ĭepending on where and how I use the call Serial.print(freeMemory()) the results change. The basic point of this question is to gather all the possible Flash memory printing techniques. I created a program that prints the word "test", with various methods: At the same time, I have been using the freeMemory() function from Adafruit. ![]() ![]() I have been testing on an Arduino UNO various techniques for serial printing from Flash Memory instead of RAM.
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