VLLS1 Wake up

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VLLS1 Wake up

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mariajosebarque
Contributor I

Hello, I'm working with KL16Z256 in VLLS1 mode. I want to wake up by a rising edge on pin PTB0. This pin doesn´t support GPIO interrupt, only LLWU source. However, I need to enable the GPIO interrupt to wake up. My code is:


PORTB_PCR0 = (uint32_t)((PORTB_PCR0 & (uint32_t)~(uint32_t)(PORT_PCR_ISF_MASK | PORT_PCR_MUX(0x07) | PORT_PCR_IRQC_MASK))

             | (uint32_t)(PORT_PCR_MUX(0x01)) | (uint32_t)(PORT_PCR_IRQC(0x09)) );

psLLWUStruct->PE2 |= LLWU_PE2_WUPE5(0x01);   //Rising edge

SMC_STOPCTRL = SMC_STOPCTRL_VLLSM(0x01);

SMC_PMPROT = 0x0A;         //Added to allow VLLS

SMC_PMCTRL = SMC_PMCTRL_STOPM(u8LowPowerType);

MCG_C6 &= ~MCG_C6_CME0_MASK; // Disable MCG clock monitor

stop();  // Goto STOP with SLEEPDEEP enabled

If I don't use the first setence, it doesn´t work.

On the other hand, it work only the first time, once the microcontroler wake up, it reset all the time.

I have cleared the LLWU flash... what is wrong???

Thank you,

María José

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mjbcswitzerland
Specialist V

Hi María José

You may find some practical information here:

http://www.utasker.com/kinetis/LLWU.html

You should not need to configure the GPIO mode for operation but you should clear the wakeup interrupt source after each reset, and acknowledge the isolation mode with

PMC_REGSC = PMC_REGSC_ACKISO;

Regards

Mark

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LLWU: µTasker LLWU Support

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124 Views
mariajosebarque
Contributor I

Hi Mark,

I have cleared the wakeup interrupt source after each reset, and acknowledge the isolation mode with

PMC_REGSC = PMC_REGSC_ACKISO;

but the result is the same, I need to enable the GPIO interrupt to wake up.

I would like to test the uTaster, it is possible??

Thank you.

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124 Views
mjbcswitzerland
Specialist V

Hi María José

I have sent you a link to the lastest code including LLWU support (sent at 13:28 GMT).

Please tell me in case you don't receive it.

Regards

Mark

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