Memset() with RAM segments

[ambarishhundeka]

Hi NXP team,

I am using S32K144 controller in our project.

I used the meset() with linker script global variables.

 memset(&__FSLCODE_SECTION_START, 0x00, __FSLCODE_SECTION_END - __FSLCODE_SECTION_START);

but that FSL code  segment (section) is not set to zero.

find the attached document for more information on memeset() problem.

Regarding the watchdog timer :

I used the code given in the reference manual for watchdog configuration 

DISABLE_INTERRUPTS(); // disable global interrupt
WDOG->CNT = 0xD928C520; //unlock watchdog
while(((WDOG->CS & WDOG_CS_ULK_MASK) >> WDOG_CS_ULK_SHIFT) == 0); //wait until registers are unlocked
WDOG->TOVAL = 256; //set timeout value
WDOG->CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(0) |
WDOG_CS_WIN(0) | WDOG_CS_UPDATE(0);
while(((WDOG->CS & WDOG_CS_RCS_MASK ) >> WDOG_CS_RCS_SHIFT) == 0); //wait until new configuration takes effect
ENABLE_INTERRUPTS(); //enable global interrupt

if(WDOG->CNT >= 125)
{
DISABLE_INTERRUPTS(); // disable global interrupt
WDOG->CNT = 0xB480A602; // refresh watchdog
ENABLE_INTERRUPTS(); //
}

in the above code , control not come out of the while(((WDOG->CS & WDOG_CS_ULK_MASK) >> WDOG_CS_ULK_SHIFT) == 0);

Kindly help in this.

Regards,

Ambarish 

[wangpengfei]

Hi Raju,

//if(timeout_s > 127) return PUBLIC_STATUS_ERROR;
INT_SYS_DisableIRQGlobal();

WDOG->CNT = 0xD928C520; // Unlock WDOG
while(((WDOG->CS & WDOG_CS_ULK_MASK) >> WDOG_CS_ULK_SHIFT) == 0);

WDOG->TOVAL =timeout_ms;//128 * timeout_s; // Timeout in max = 65535 * (1 / 1 kHz) = 65535ms
//WDOG->CS = WDOG_CS_EN(1)|WDOG_CS_CLK(1)|WDOG_CS_INT(1)|WDOG_CS_WIN(0)|WDOG_CS_UPDATE(0);
WDOG->CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(0) | WDOG_CS_WIN(0) | WDOG_CS_UPDATE(0) | WDOG_CS_DBG(1);

while(((WDOG->CS & WDOG_CS_RCS_MASK ) >> WDOG_CS_RCS_SHIFT) == 0);
INT_SYS_EnableIRQGlobal();

 It's stuck here

while(((WDOG->CS & WDOG_CS_RCS_MASK ) >> WDOG_CS_RCS_SHIFT) == 0);

[bjrajendra]

Hi Wang,

If you are trying to update/ reconfigure the watchdog after initial watchdog configuration like initial disable watchdog function or something 

I suggest you use WDOG_CS_UPDATE(1) in your initial watchdog configuration.

Raju

[danielmartynek]

Hi,

Regarding the watchdog, the code works on my side with both masksets (0N47T, 0N57U) as expected.

There is a restriction that the reconfiguration must be done within 128 bus cycles.

So you cannot step the code. 

Regards,

Daniel 

[ambarishhundeka]

@Hello Daniel,

Thank you for your support.

could you please share your complete tested source code.

I tried with toggling the LED while  refreshing the  watchdog , but LED is not toggling.

directly flashed the code and checked.

EVAL board has PS32K144HFVLL 0N77P controller chip.

PCC-> PCCn[PCC_PORTD_INDEX] = PCC_PCCn_CGC_MASK; /* Enable clock for PORT D */

PTD->PDDR |= 1<<0; /* Port D0: Data Direction= output */

PORTD->PCR[0] = 0x00000100; /* Port D0: MUX = ALT1, GPIO (to blue LED on EVB) */ WDOG->CNT = 0xD928C520; //unlock watchdog

DISABLE_INTERRUPTS();

while(((WDOG->CS & WDOG_CS_ULK_MASK) >> WDOG_CS_ULK_SHIFT) == 0); //wait until registers are unlocked

WDOG->TOVAL = 0x1E8480; // used the default clock  configuration , not configured clock in the code //set the count to 2000000

WDOG->CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(0) |

WDOG_CS_WIN(0) | WDOG_CS_UPDATE(0);

while(((WDOG->CS & WDOG_CS_RCS_MASK ) >> WDOG_CS_RCS_SHIFT) == 0); //wait until new configuration takes effect

ENABLE_INTERRUPTS(); //enable global interrupt

while(1)

{

//PTD->PDDR = 1;

if(WDOG->CNT >= 0xF4240) //if count  is equal or greater 1000000

{

DISABLE_INTERRUPTS(); // disable global interrupt

WDOG->CNT = 0xB480A602; // refresh watchdog

ENABLE_INTERRUPTS(); //

PTD->PTOR |= 1<<0;

}

}

Thanks,

Ambarish

[danielmartynek]

Hello Ambarish,

The problem is in the maskset (0N77P).
Please use either 0N47T or preferably 0N57U which is the production version.
There are many differences between 0N77P and 0N47T/0N57U.

The current RM is not compatible with that maskset.

WDOG_CS[ULK] is not present on 0N77P thus it reads 0.

Regards,

Daniel

[bjrajendra]

Hi Daniel,

Is there any similar issue with S32K142.

Raju

[danielmartynek]

Hi Raju,

No, there is no such issue with the S32K142.

There is only one S32K142 mask 0N33V covered by the S32K1xx RM, DS.

BR, Daniel

[bjrajendra]

Hi Daniel,

Thanks for the response.

I'm trying to implement the watchdog code and the code just has a while(1) loop with the below code. I expect the code will reset so I set a breakpoint at the start of the code to ensure the reset. But it still there is no reset happened. 

DISABLE_INTERRUPTS();

WDOG->CNT = 0xD928C520; //unlock watchdog

while(((WDOG->CS & WDOG_CS_ULK_MASK) >> WDOG_CS_ULK_SHIFT) == 0); //wait until registers are unlocked

WDOG->TOVAL = 256; // used the default clock configuration , not configured clock in the code //set the count to 2000000

WDOG->CS = WDOG_CS_EN(1) | WDOG_CS_CLK(1) | WDOG_CS_INT(0) |

WDOG_CS_WIN(0) | WDOG_CS_UPDATE(0);

while(((WDOG->CS & WDOG_CS_RCS_MASK ) >> WDOG_CS_RCS_SHIFT) == 0); //wait until new configuration takes effect

ENABLE_INTERRUPTS(); //enable global interrupt

Kindly suggest us a solution 

Raju.

[danielmartynek]

Hi Raju,

So the core stays halted at the breakpoint?

You can enable the WDOG in the debug mode of the MCU.

WDOG_CS[DBG] = 1

BR, Daniel

[bjrajendra]

Thanks Daniel. It is working now. Thanks for the support.

Raju