Kinetis MicrocontrollersのトピックRe: K02 Enter VLLS3 Power Consumption Question?

K02 Enter VLLS3 Power Consumption Question?

herol — Wed, 27 May 2015 13:15:07 GMT

When i enter vlls3 mode , i measure power comsumption 2xx uA (i use external osc 32768hz),

Where am i setting wrong?

IC: MK02FN64VFM10

Environment: IAR 7,3

My code:

/* Including needed modules to compile this module/procedure */

#include "Cpu.h"

#include "Events.h"

#include "pin_init.h"

#include "osa1.h"

#if CPU_INIT_CONFIG

#include "Init_Config.h"

#endif

/* User includes (#include below this line is not maintained by Processor Expert) */

#define SYS_CLOCK 23986176

void SYS_Init(void)

{

OSC_CR = 0xA0;

MCG_C1 = 0x0;

MCG_C2 = 0x06; //

MCG_C4 = 0X80; //32768*732 = 23986176 SYSTEM CLOCK

MCG_C6 = 0;

MCG_C7 = 1; //

MCG_C8 = 0;

SIM_SOPT1 &= ~(3<<18);

SIM_SCGC4 = 0;

SIM_SCGC5 = 0;

SIM_SCGC7 = 0;

WDOG_STCTRLH = 0;

}

void ENTER_VLLS3(void)

{

volatile unsigned int dummyread;

SMC_PMPROT = SMC_PMPROT_AVLLS_MASK;

/* Set the STOPM field to 0b100 for VLLS3 mode */

SMC_PMCTRL &= ~SMC_PMCTRL_STOPM_MASK;

SMC_PMCTRL |= SMC_PMCTRL_STOPM(0x4);

SCB->SCR &= (unsigned int)~(unsigned int)(SCB_SCR_SLEEPONEXIT_Msk);

SCB->SCR |= SCB_SCR_SLEEPDEEP_Msk;

SMC_STOPCTRL = 0x03;

/*wait for write to complete to SMC before stopping core */

dummyread = SMC_PMCTRL;

/* Now execute the stop instruction to go into LLS */

//stop();

asm("WFI");

}

/*lint -save -e970 Disable MISRA rule (6.3) checking. */

int main(void)

/*lint -restore Enable MISRA rule (6.3) checking. */

{

unsigned int i;

PE_low_level_init();

for(i = 0 ; i < 1000000; i++);

SYS_Init();

while(1)

{

ENTER_VLLS3();

}

#ifdef PEX_RTOS_START

PEX_RTOS_START(); /* Startup of the selected RTOS. Macro is defined by the RTOS component. */

#endif

for(;;){}

}

Electric circuit:

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Thu, 28 May 2015 03:14:57 GMT

Hi，

Before you enter in the VLLSx, you can change your clock mode to BLPI, and disable the OSC module, because OSC module also have large power consumption:

Besides this, where the current point you are measuring your power consumption, did this point just contain the MCU power consumption, no other external circuit power consumption?

Wish it helps you!

Have a great day,
Jingjing

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Re: K02 Enter VLLS3 Power Consumption Question?

herol — Thu, 28 May 2015 05:42:17 GMT

Hi Jinjing,

1. I have tried to change to BLPE then into VLLS MODE, but get the same current consumption .

OSC Module in low-power mode power consumption is 500nA, but I measured the amount is too much difference .

2. Yes, no other external circuitry. I would like to test the power consumption , so do not add any circuit

Thank you.

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Fri, 29 May 2015 06:09:23 GMT

Hi herol,

When you test your power consumption, did you still connect the debugger or programmer?

After you download the code to your chip, power off and remove your debugger, then power on again and test the power consumtion.

If still not ok, try to change the clock mode to BLPI, use the internal clock, and disable the OSC module, then enter in VLLS3 and test the power consumption, to check whether this is the same as the power consumption which datasheet defined.

Wish it helps you!

Have a great day,
Jingjing

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Sun, 31 May 2015 03:20:28 GMT

Hi Jingjing,

If connect the debugger or no power off , the power consumption will be mA.

I try to change the colock mode to BLPI, and disable the OSC module ,then enter in VLLS3, power consumption is the same 2xx~3xx uA.

(I've used different PCB and different ic, but the results are the same)

I tried using KDS 3.0, "statement with no effect" message in wfi instruction.

Thanks.

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Sun, 31 May 2015 03:25:59 GMT

Has anyone actually measured the power consumption of k02 and provide examples it?

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Mon, 01 Jun 2015 07:56:59 GMT

Hi herol,

Please use my K02 project, and test the power consumption on your board, because I don't have the K02 board.

I create the K02 barebone KDS project, and enter VLLS3, I test on my K22 board, it can enter in the VLLS3, and the power consumption is same as the datasheet, just about 4 uA.

I can make sure my code can enter VLLS3 successfully, you can try it, and tell me your power consumption, if it is still very higher , it maybe caused by the hardware.

When you test the power consumption, please take off your debugger from your board, and repower on the board.

Waiting for your test result.

Have a great day,
Jingjing

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Tue, 02 Jun 2015 03:43:22 GMT

Hi Jingjing,

I use your KDS project 、 remove debug tool and repower to get power consumption 3.7uA.

If I creat new Processor Expert project (using the same code)、 remove debug tool and repower to get power consumption is 2XXuA.

I have a question , how to creat a no Processor Expert projcet for IAR or how to reduce power consumption in a

Processor Expert projcet ?

Thanks.

herol

Re: K02 Enter VLLS3 Power Consumption Question?

hnicolasg — Tue, 02 Jun 2015 13:44:41 GMT

Sorry, but I'm a newbie. What do you programmer use for MKL02?. I don't know which to buy. Thank you.

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Tue, 02 Jun 2015 15:44:48 GMT

Hi,

You can use KDS compiling and debugging of your designs.
KDS website : Kinetis Design Studio Integrated Development |Freescale

If you want to buy development platform for kl02 can refer to the following website :

Freescale Freedom Development Platform for th|Freescale

Wish it helps you!

herol

Re: K02 Enter VLLS3 Power Consumption Question?

hnicolasg — Tue, 02 Jun 2015 17:31:03 GMT

Thank Hero !!!

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Wed, 03 Jun 2015 07:33:03 GMT

Hi Jingjing,

Do you have any ideas?

herol

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Wed, 03 Jun 2015 08:04:58 GMT

Hi herol，

Could you tell me the PE project which still have 2xxuA with what IDE? KDS PE project or just use Processor expert for IAR project with out KDS?

Regards,

Jingjing

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Wed, 03 Jun 2015 10:41:07 GMT

Hi Jingjing,

I use PEMICRO MULTILINK UNIVERSAL.

I creat a project and select Processor Expert the power consumption is 2xxuA.(KDS 3.0)
I creat a project and no choose Processor Expert the power consumption is 3.7uA.(KDS 3.0)

But now I do not know which option to set the resulting PE project enters debug mode will have an error message.

Thanks.

herol

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Thu, 04 Jun 2015 07:11:22 GMT

Hi herol,

I still find the PE project have higher power consumption, but I still didn't find which code caused it, I am still finding it, when I find the problem, I will let you know.

Your question of downloading maybe caused by the low power mode, you can choose the mass erase on connect an try again.

Regards,

Jingjing

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Thu, 04 Jun 2015 08:15:13 GMT

Hi Jingjing,

Expect you to quickly find the problem.

I found the PE project enters debug mode will have an error message,

but non-PE project is ok.

Thanks.

herol

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Thu, 04 Jun 2015 08:18:04 GMT

After you build the PE project, any error in the problems window?

You should make sure no error before downloading.

Besides, if still not ok, you can try to create a new PE project, and download the code again.

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Thu, 04 Jun 2015 08:41:50 GMT

No any error.

I tried many times to go to create a new PE project, and also re-install KDS, but the problem still exists .

Re: K02 Enter VLLS3 Power Consumption Question?

herol — Thu, 04 Jun 2015 09:15:12 GMT

When I change the cpu type pinmuxs have a error, then to click switch configuration can be solved , in addition there is no other error message.

Re: K02 Enter VLLS3 Power Consumption Question?

kerryzhou — Thu, 04 Jun 2015 09:22:33 GMT

About the cpu type change error, just like your picture, click switch configuration, then generate the code again and build, the error will be disappeared.

About the PE project download problem, because I don't have K02 , I can't try it, I just try it on my K22, it can use PE multilink to download the code both in barebone project and PE project.