在路上
发布时间:2014-04-28 17:12:26
STM32时钟系统与软件配置在STM32中,有五个时钟源,为HSI、HSE、LSI、LSE、PLL。①HSI是高速内部时钟,RC振荡器,频率为8MHz。②HSE是高速外部时钟,可接石英/陶瓷谐振器,或者接外部时钟源,频率范围为4MHz~16MHz。③LSI是低速内部时钟,RC振荡器,频率为40kHz。④LSE是低速外部时钟,接频率为32.768kHz的石英晶体。.........【阅读全文】
发布时间:2014-04-27 22:15:01
/* exact-width signed integer types */typedef signed char int8_t;typedef signed short int int16_t;typedef signed int int32_t;typedef signed __int64 int64_t; .........【阅读全文】