topic Re: Help:Delay Function for time delay(S32K144) in S32 Design Studio

Help:Delay Function for time delay(S32K144)

victor_song_171 — Sat, 16 Feb 2019 06:02:33 GMT

How could I edit a time delay function in S32K144_100Pin?

I want code a function for time delay ,just like delay_second() , delay_microsecond(), or just like that.

Re: Help:Delay Function for time delay(S32K144)

BlackNight — Sun, 17 Feb 2019 09:30:17 GMT

Maybe you are looking for something like the McuWait module:

McuOnEclipseLibrary/McuWait.c at master · ErichStyger/McuOnEclipseLibrary · GitHub

It offers functions to wait for a number of milli-seconds or microseconds:

McuWait_Waitms(1000);

McuWait_Waitus(50);

If using an ARM Cortex-M4, it uses the cycle counter (see Cycle Counting on ARM Cortex-M with DWT | MCU on Eclipse and Measuring ARM Cortex-M CPU Cycles Spent with the MCUXpresso Eclipse Registers View | MCU on Eclipse ).

I hope this helps,

Erich

Re: Help:Delay Function for time delay(S32K144)

victor_song_171 — Wed, 20 Feb 2019 00:54:00 GMT

Thank you.

but using the function mcuwait_waittime(delay_time),weawther all of the computing resource wait for the delay function done?

Re: Help:Delay Function for time delay(S32K144)

Yunchuan — Wed, 20 Feb 2019 03:51:04 GMT

As ErichS‌ say, or you can use SDK OSIF module , function void OSIF_TimeDelay(const uint32_t delay).

SysTick timer is used in this function，and SysTick interrupt will be enabled when you call this function, and will always run without another disable action.