Component module WAIT1

arnaldogomes — Fri, 01 Jul 2016 12:54:39 GMT

Hi Erich!

I'm using your component module WAIT1 at KL25Z. When I use with "Internal Oscillator" works well, but when is configured for External Crystal the delays are divided by 2. Can you help me?

Note: Component Inspector - Cpu

System oscillator 0 --> Enable

MCG mode --> PEE

MCG output[MHz] --> 96.0

Core clock --> 48.0

Bus clock --> 24.0

Regards,

Arnaldo

Re: Component module WAIT1

BlackNight — Fri, 01 Jul 2016 18:23:20 GMT

Hi Arnaldo,

For me, the delay time are around 10 ms both for the internal clock and the clock configuration you have. Keep in mind that because it is using a number of nops to wait, the timing is in the ~10% range.

Below is the code for toggling the blue LED (PTD1) on the FRDM-KL25Z:

Default internal clock:

With your clock settings:

The number of wait cycles is based on the core clock:

#define WAIT1_INSTR_CLOCK_HZ

CPU_CORE_CLK_HZ /* for Kinetis, use core clock as base for instruction execution */

Which 48MHz in that configuration:

#define CPU_CORE_CLK_HZ

48000000U /* Initial value of the core/system clock frequency in Hz. */

I know there was an issue with what clock to be used (it used the bus clock instead of the the core clock) in a very old Wait component (about 2 years ago).

Are you really using the latest version from SourceForge (see https://mcuoneclipse.com/2014/10/21/mcuoneclipse-releases-on-sourceforge/ )?

In any case, I have attached my test project so you can compare the code and component version numbers.

I hope this helps,

Erich

PS: I recommend to report issues in the GitHub tracking system here: Issues · ErichStyger/McuOnEclipse_PEx · GitHub

topic Component module WAIT1 in Kinetis Microcontrollers

Component module WAIT1

Re: Component module WAIT1