topic Re: KV10 entry VLLS3 and LLWU wakeup question in Power Management

KV10 entry VLLS3 and LLWU wakeup question

胡绍广 — Wed, 20 Nov 2019 02:36:06 GMT

Hello, I now use the low power VLLS3 mode of KV10Z32, using the wakeup function of the LLWU, but the program will not wake up using the PTC3 (LLWU _ P7) and request help. thanks you

the following is the code

void BOARD_InitPins(void)
{
/* Port C Clock Gate Control: Clock enabled */
CLOCK_EnableClock(kCLOCK_PortC);
/* Port E Clock Gate Control: Clock enabled */
CLOCK_EnableClock(kCLOCK_PortE);

gpio_pin_config_t PTE16_config = {
.pinDirection = kGPIO_DigitalOutput,
.outputLogic = 0U
};
/* Initialize GPIO functionality on pin PTE16 (pin 3) */
GPIO_PinInit(BOARD_INITPINS_PTE16_GPIO, BOARD_INITPINS_PTE16_PIN, &PTE16_config);

/* PORTC3 (pin 24) is configured as LLWU_P7 */
PORT_SetPinMux(PORTC, 3U, kPORT_MuxAsGpio);

PORTC->PCR[3] = ((PORTC->PCR[3] &
/* Mask bits to zero which are setting */
(~(PORT_PCR_PS_MASK | PORT_PCR_ISF_MASK)))

/* Pull Select: Internal pulldown resistor is enabled on the corresponding pin, if the
* corresponding PE field is set. */
| PORT_PCR_PS(PCR_PS_0b0));

/* PORTE16 (pin 3) is configured as PTE16 */
PORT_SetPinMux(BOARD_INITPINS_PTE16_PORT, BOARD_INITPINS_PTE16_PIN, kPORT_MuxAsGpio);
}

int main(void)
{
smc_power_mode_vlls_config_t vlls_config; /* Local variable for vlls configuration */

/* Init board hardware. */
PMC_ClearPeriphIOIsolationFlag(PMC);
BOARD_InitPins();
for(uint32_t i = 0; i<0x5FFF;i++)
{
delay();
GPIO_WritePinOutput(GPIOE,16,1);
delay();
GPIO_WritePinOutput(GPIOE,16,0);
}
LLWU_SetExternalWakeupPinMode(LLWU,7,kLLWU_ExternalPinRisingEdge);

vlls_config.subMode = kSMC_StopSub3;
SMC_PreEnterStopModes();
SMC_SetPowerModeVlls(SMC, &vlls_config);
PMC->REGSC = PMC_REGSC_ACKISO_MASK;
SMC_PostExitStopModes();

while (1)
{
for(uint32_t i = 0; i<0x5FFF;i++)
{
delay();
GPIO_WritePinOutput(GPIOE,16,1);
delay();
GPIO_WritePinOutput(GPIOE,16,0);
}

}
}

Re: KV10 entry VLLS3 and LLWU wakeup question

nxf56274 — Thu, 21 Nov 2019 01:08:11 GMT

Hi,

You do not use the signal Multiplexing function.

Have a great day,
TIC

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Re: KV10 entry VLLS3 and LLWU wakeup question

胡绍广 — Thu, 21 Nov 2019 01:32:18 GMT

Thank you very much for your answer. This problem has been solved. The new problem I encounter now is that the data of SRAM is lost after exiting VLLS3 mode.

Please tell me what I should do now so as not to lose SRAM.

The development environment I use is Keil

Re: KV10 entry VLLS3 and LLWU wakeup question

胡绍广 — Thu, 21 Nov 2019 02:59:44 GMT

Thank you very much for your answer.

This problem has been solved.

The new problem I encounter now is that the data of SRAM is lost after exiting VLLS3 mode.

Please tell me what I should do now so as not to lose SRAM.

The development environment I use is Keil

Re: KV10 entry VLLS3 and LLWU wakeup question

nxf56274 — Fri, 22 Nov 2019 01:29:44 GMT

Hi,

Sorry. If you have other's question. Please create a new question.

Have a great day,
TIC

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Re: KV10 entry VLLS3 and LLWU wakeup question

ChandlerY — Thu, 30 Apr 2020 09:16:06 GMT

Hi ,can you explain more about it ? I don't understand what does it mean. Thank you very much!

Re: KV10 entry VLLS3 and LLWU wakeup question

nxf56274 — Wed, 06 May 2020 02:40:02 GMT

The comment shows that we should configure the pin as LLWU. But the next line, the function configure the pin as GPIO.