Posted on December 18, 2016 at 20:25Hello my friends.I want to design RTC board with best accuracy. My Mcu is STM32F103RB and it has Calibration option to enhance the Real Time Counter.I know 2 paramaters are so important to design: 1. Crystal accur...

Posted on April 20, 2016 at 10:31Hi Every body... Recently i wrote a program to read a file from uSDHC Card 4GB for infinite loop. Purpose is check the total time of reading a file (eg mp3 file). The code is so simple and noting have any complexity....