Fix the F_CPU frequency definition for the ESP32-S3 in esp32-hal.h by devrim-oguz · Pull Request #7913 · espressif/arduino-esp32 · GitHub
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define F_CPU 16000000UL //Setting F_CPU to the frequency of the | Miguel Torres - Academia.edu
Getting Started with MPLAB® X IDE
Question] when is F_CPU macro set? · Issue #612 · stm32duino/Arduino_Core_STM32 · GitHub
define F_CPU 8000000UL /* crystal frequency in Hz */ | Chegg.com
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