深度评测国产RISC-V MCU:有这些优缺点_腾讯新闻
1.初始化CAN引脚和时钟HPM_IOC->PAD[IOC_PAD_PE31].FUNC_CTL=IOC_PE31_FUNC_CTL_CAN1_TXD;HPM_IOC->PAD[IOC_PAD_PE30].FUNC_CTL=IOC_PE30_FUNC_CTL_CAN1_RXD;/*SettheCAN1peripheralclockto80MHz*/clock_set_source_divider(clock_can1,clk_src_pll1_clk1,5);freq=c...
STM32F03开发板--系统时钟设置SysTick
/*ConfiguretheSystemclockfrequency,AHB/APBxprescalersandFlashsettings*/SetSysClock();}发现函数将RCCregisters中与时钟配置相关的寄存器复位Reset,并使能高速内部时钟(1:HSIoscillatorON),最后调用了SetSysClock()函数;在SetSysClock()函数中检测的是有没有外部时钟源X2:由于在板子上...
Make him tick?
suchastheoneincorporatedinourmobilephones.Timewaswhenclockswereapieceofintricatemachinery.Whentheold-timeclockrunsproperly,itmakesasound,likethis:tick,tock;tick,tock;tick,tock….
STM32--SYSTICK超简易定时器
*@briefConfigurestheSysTickclocksource.*@paramSysTick_CLKSource:specifiestheSysTickclocksource.*Thisparametercanbeoneofthefollowingvalues:*@argSysTick_CLKSource_HCLK_Div8:AHBclockdividedby8*selectedasSysTickclocksource.*@argSysTick_CLKSource_H...
STM32的SYSTICK_Init()配置
/*EnabletheSysTickCounterSysTick_CounterCmd(SysTick_Counter_Enable);}系统时钟定时器的周期与驱动的时钟频率和Reload值相关。RCC通过AHB时钟(HCLK)8分频后作为Cortex系统定时器(SysTick)的外部时钟。驱动系统时钟定时器的时钟源有两个:HCLK或(HCLK/8默认),通过调用SysTick_CLKSourceConfig(SysTick_CLKS...
STM32 之 SysTick
voidSysTick_Config(void){/*DisableSysTickCounter*/SysTick_CounterCmd(SysTick_Counter_Disable);/*DisabletheSysTickInterrupt*/SysTick_ITConfig(DISABLE);/*ConfigureHCLKclockasSysTickclocksource*/SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);...
TED学院 | 如果我们不保护地球,我们的未来也会变得动荡不安
Buttheboywiththeclockisstandingstill,watching.Tick-tock,tick-tock,tick-tock.Whyaren'tyourunning?Asksthegirl.I'mstudyingtheunravelingoftheworld,saystheboy,earnestly.That'swhatthismonsterrepresentsinourdream.I'manengineerandaknowledge-...
《开端》为什么这么火 |《经济学人》外刊精读
theclockistickingdown我们之前在日本举办奥运会那篇学过一个类似的表达,tickdown指的是timeisdecreasingordrawingtoanend,用来说明时间「迫近」。Todaytheclockistickingdownagainstabackdropofresurgentinfectionsofcovid-19inJapan,astateofemergencyinTokyoand...
Linux实时化与硬实时RTOS综述
Ahighlevelofreal-timeperformanceDefinableworstcaseexecutiontimeLowpowerconsumptionthroughalowoperationalclock1.2.3.4.利用多核HW-RTOS技术,通过高速、高精度的同步,解决了传统软件RTOS中cpu间的同步和通信问题。由于使用多核HW-RTOS可以实现cpu间的同步速度小于1微秒,因此可以实现cp...
什么?日本死活要办奥运会? | 《经济学人》外刊精读
Owingtotheragingpandemic,amyriadofstudentshadappliedfordeferredadmissiontocollege.03theclockistickingdown金牌写作用语tickdown这个短语的意思是timeisdecreasingordrawingtoanend,用来指时间「迫近」。相比普通的timeisapproaching,theclockistickingdown可就生...