topic Re: howto switch into stop3 mode with my MC9S08DZ32 in 8-bit Microcontrollers

howto switch into stop3 mode with my MC9S08DZ32

kelly1966 — Wed, 05 Aug 2015 14:45:17 GMT

Hello

I have a question about my MC9S08DZ32 which I've been experimenting for a five of weeks.

I'm trying unsuccessfully for several days to move the MCU into „stop3 mode“ and wake-up the MCU via MSCAN.

I also have already read the AN3387 and tried to implement AN2255 and AN2283 but without success (nothing happens).

Now my question:

What I have to do if I want to switch the MCU into the stop3 mode and stay there as long as it receives a message via MSCAN (wake-up).

Is there a specific command for switching the modes or to trigger a specific event or set a flag?

Thank you for your help

TOM

You see some part of my code in the attachment

Original Attachment has been moved to: main-(with-stop3).c.zip

Re: howto switch into stop3 mode with my MC9S08DZ32

vicentegomez — Wed, 05 Aug 2015 20:28:34 GMT

Hi Thomas

To enter to stop mode you need executing a STOP instruction under the conditions as shown in Table 3-1

Also check the WUPIE on MSCAN Receiver Interrupt Enable Register (CANRIER)

Have a great day,
Vicente

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Re: howto switch into stop3 mode with my MC9S08DZ32

kelly1966 — Mon, 10 Aug 2015 06:47:02 GMT

Dear Vicente,

A big thanks for your quick answer.

Here is my implemented code, but it don't work.

The MCU spent ~ 13mA and the I can't try the Wake-Up-Iq

And I don't know why...

// ==>> Code

CANCTL0 |= 0x04; // WUPE = 1 ==> MSCAN Wake-Up enable

CANRIER |= 0x80; //In CANRIER Bit7 WUPIE = 1

SOPT1 |= 0x20; // STOPE = 1, SOPT1 Bit5

SPMSC1 &= ~0x0C; // LVDE + LVDSE = 0, SPMSC1 Bit2 + Bit3

SPMSC2 &= ~0x01; // PPDC = 0, SPMSC2 Bit0 für Stop3 ohne BDM und untervoltage detection

This Register I can't find

//BDCSCR &= ~0x80; // ENBDM = 0 in Register BDCSCR, BDCSCR Bit7

<<==

Is it possible to take a asm command to switch into the stopmade?

And I need your help along

Thanks for your Response

TOM

-- was that the right button?

Re: howto switch into stop3 mode with my MC9S08DZ32

vicentegomez — Wed, 12 Aug 2015 21:23:21 GMT

Hi Thomas

Sorry for the late response,

please check the attached file this is a code for the S08QE that set it to wake up using the KBI, this can help you. unfortunately I am out of the office to create a project with the DZ,

Please let me know if this help you.

Re: howto switch into stop3 mode with my MC9S08DZ32

kelly1966 — Tue, 18 Aug 2015 06:57:22 GMT

Hi Vicente,.

I have unfortunately no a file received, can you send it again?

Big Thanks

TOM

Re: howto switch into stop3 mode with my MC9S08DZ32

vicentegomez — Tue, 18 Aug 2015 16:37:13 GMT

Here is

Re: howto switch into stop3 mode with my MC9S08DZ32

vicentegomez — Tue, 18 Aug 2015 16:42:05 GMT

or....

void main(void)

{

// Following a reset, BUSCLK = 4MHz

SOPT1_STOPE = 1;// stop mode enable

SCI1BD = 26; // SCI baud rate = 4MHz/(16*26)=9615 bps

SCI1C1 = 0; //default settings

//enable transmitter and receiver pins, enables receiver interrupt

SCI1C2 = SCI1C2_TE_MASK | SCI1C2_RE_MASK | SCI1C2_RIE_MASK;

PTCDD_PTCDD0 = 1; //PTC0 as output

PTCD_PTCD0 = 1; // PTC0 off

PTCDD_PTCDD1 = 1; //PTC1 as output

PTCD_PTCD1 = 1; // PTC1 off

PTADD = 0; //PTA as input

PTAPE = PTAPE_PTAPE2_MASK; // PTA2 pull up enables

KBI1PE = KBI1PE_KBIPE2_MASK; //enable interrupt 2

KBI1SC = KBI1SC_KBIE_MASK ; //KBI enable ,detect edges only

KBI1ES = 0; // Falling edge eneble

EnableInterrupts;

for (;;)

{

__RESET_WATCHDOG();

asm ("STOP");

PTCD_PTCD1 = ~PTCD_PTCD1;

}

/***************************************************************************************/

void interrupt VectorNumber_Vsci1rx SCI1RX_ISR(void)

{

(void) SCI1S1; // read SCIS1 register for clear RDRE flag

u8receiver = SCI1D;

SCI1D = u8receiver;

if (u8receiver == 'l') {

PTCD_PTCD0= ~ PTCD_PTCD0 ; //toggle PTCD0

}

/***************************************************************************************/

void interrupt VectorNumber_Vkeyboard kbi_ISR(void)

{

int i = 5000; //delay

while :smileyinfo:

{

i--;

}

KBI1SC_KBACK = 1; // Acknowledge KB Interrupts

PTCD_PTCD0 = ~PTCD_PTCD0;

}

/***************************************************************************************

Regards

Vicente

Re: howto switch into stop3 mode with my MC9S08DZ32

kelly1966 — Fri, 28 Aug 2015 13:56:06 GMT

Hallo Vicente,

I do the same I think, but it don't work...

Bool ENTER_STOP_MODE = FALSE; // starts in Normal-Mode

Bool MCU_IS_STOPPED = FALSE; // the mcu isn't stopped

void main(void) {// Clear COP Watchdog timeout

SOPT1 = 0x20; // STOPE = 1, SOPT1 Bit5

SPMSC1 &= ~0x0C; // LVDE + LVDSE = 0, SPMSC1 Bit2 + Bit3

SPMSC2 &= ~0x01; // PPDC = 0, SPMSC2 Bit0 Stop3 with BDM

MCGC1 = 0xB8;

MCGC2 = 0x36;

MCGC3 = 0x00;

while(!(MCGSC&0x02)); // Wait until the initialization cycle of the external crystal clock is completed

// isrTimer1 configure and aktivate

TPM1MODH = 0xFD; // Timer1 Overflow

TPM1MODL = 0xD0;

TPM1SC = 0x4F;

MSCANInit();// CAN Schnittstelle initialisieren

// CANCTL0 |= 0x04; // WUPE = 1 ==> MSCAN Wake-Up enable

// CANRIER |= 0x80; // Enable Wake-Up IRQ

// RUN: CANE = 1, CSWAI = X, SLPRQ = 0, SLPAK = 0

// WAIT: CANE = 1, CSWAI = 0, SLPRQ = 0, SLPAK = 0

EnableInterrupts;

for (;;) {

if (ENTER_STOP_MODE) { // enter stopmode

if (!MCU_IS_STOPPED) {

MCU_IS_STOPPED = TRUE; // the mcu is now stopped

CANCTL0 |= 0x02; // SLPRQ = 1 ==> MSCAN SLEEP

CANCTL1 |= 0x02; // SLPAK = 1 ==> MSCAN SLEEP

asm ("STOP"); // switch into stop3 Mode

}

// The isrTimer1 sets the (Bool ENTER_STOP_MODE = True);

// In my canWakeUp irq I set (ENTER_STOP_MODE = MCU_IS_STOPPED = false) again

// After "asm (STOP);" the mcu ever reset

Thanks for your answer

Tom

Re: howto switch into stop3 mode with my MC9S08DZ32

vicentegomez — Mon, 14 Sep 2015 17:26:07 GMT

Please remember that in some kind of stop mode, the debuger does not work, or if you are using the debuger probably you did not reach the stop mode