Posted on November 13, 2013 at 14:44I'm trying to use spi  to talk to a EEPROM. It has a cs setup time of 200ns. I'm wondering if  I can set the CPHA to meet the requirement in case the spi speed is in the proper range. Is this the purpose of clock ...

Posted on April 19, 2013 at 05:54I'm working on a project use a F4 MCU. Its clock speed is 168MHZ. The resolution of my LCD is 320 * 480. After some testing, I got some figures. Rendering a full screen by direct accessing LCD controller by MCU can r...

Posted on July 31, 2012 at 06:55I am trying to use systick counter to verify the accuracy of my RTC. Bascially what I did is check the systick counter against RTC timer in the second interrupt. I find it seems the systick count is heavily affected b...