Some Arduino Leonardo code
TestGLCD.ino
Code to interface a graphical LCD. Described in:
http://r6500.blogspot.com.es/2014/12/interfacing-mc122032b6w-graphic-lcd.html
fastToggleTest.ini
Code to access GPIO pins at low level. Described in:
http://r6500.blogspot.com.es/2014/12/low-level-gpio-on-arduino-leonardo.html
http://aim65.blogspot.com.es/2018/02/gpio-bajo-nivel-para-arduino-leonardo.html (in Spanish)
FastPWM.ino
Code to generate fast PWM signals. Described in:
http://r6500.blogspot.com.es/2014/12/fast-pwm-on-arduino-leonardo.html
http://aim65.blogspot.com.es/2018/02/fast-pwm-en-arduino-leonardo.html (in Spanish)
FastAdcTest.ino
Code to reduce ADC conversion time. Described in:
http://r6500.blogspot.com.es/2015/01/fast-adc-on-arduino-leonardo.html
http://aim65.blogspot.com.es/2018/02/adc-rapido-en-arduino-leonardo.html (in Spanish)