Introduction - If you have any usage issues, please Google them yourself
WWDG+ LCD1602 stopwatch test * WWDG+ LCD1602 stopwatch interrupt test* Two buttons control, timing accurate to 10ms* key1--Start/Stop---PA8 (User button on the board) key2--- Clear--- PC13 (Tamper key board)* LCD1602 Connection: D0 ~ D7---> PD [0 .. 7] RS-> PE0 RW-> PE1 E-> PE2 (external pull-up resistor to 5V)* by Dream 2011-4-8* change by: Dream 2011-4-9 LCD1602 effective all the received PD pin port** connecting: LCD1602-----> STM32** D0 ~ D7------ PD [0 .. 7]** RS------ PD13** RW------ PD14** E------ PD15