Hi,everyone.
I have got a problem with WatchDog Configuration of the s9keazn8.
Mcu:s9keazn8 ;
Tool: PE micro multilink universal
software:S32 Design Studio for ARM;Version: 2018.R1
I use the following code ; I do not get 1s periodic reset but get 51s periodic
#define DisableInterrupts asm("CPSID i")
#define EnableInterrupts asm("CPSIE i")
void WatchDogCfg(void)
{
DisableInterrupts;
WDOG_CNT = 0X20c5;
WDOG_CNT = 0X28d9;
WDOG_TOVAL = 1000;// 1s times out
WDOG_CS2 = 0x01;
WDOG_CS1 = WDOG_CS1_EN_MASK;
EnableInterrupts;
}
void main(void)
{
WatchDogCfg();
SIM_SOPT = 0X0000000C;//NMIE:when clear,the pin functions as one of its alternative functions
ClockCfg();
PortCfg();
GPIOA_PSOR |= 1<<13;//Light the LED A
for(;;)
{
#if 0 // if I don't feed the dog then the mcu will reset and will light off the LED A
DisableInterrupts;
WDOG_CNT = 0X2A6;
WDOG_CNT = 0X80B4;
EnableInterrupts;
#endif
}
}
So i wonder if it has anything to do with starup_code ——void SystemInit (void) .I find that the watchDog is configurated in it.But UPDATE bit is set,so I think it is ok.
what i have done:
1:WDOG->TOVAL = WDOG_TOVAL_TOVAL(0xE803); /* Timeout value */
——》WDOG->TOVAL = WDOG_TOVAL_TOVAL(1000);
result: the periodic is 51s too;
2:I use my code instead in the void SystemInit (void)
WDOG_CNT = 0X20c5;
WDOG_CNT = 0X28d9;
WDOG_TOVAL = 1000;
WDOG_CS2 = 0x01;
WDOG_CS1 = WDOG_CS1_EN_MASK;
#if 0
#if (DISABLE_WDOG)
/* WDOG->TOVAL: TOVAL=0xE803 */
WDOG->TOVAL = WDOG_TOVAL_TOVAL(0xE803); /* Timeout value */
/* WDOG->CS2: WIN=0,FLG=0,?=0,PRES=0,?=0,?=0,CLK=1 */
WDOG->CS2 = WDOG_CS2_CLK(0x01); /* 1-kHz clock source */
/* WDOG->CS1: EN=0,INT=0,UPDATE=1,TST=0,DBG=0,WAIT=1,STOP=1 */
WDOG->CS1 = WDOG_CS1_UPDATE_MASK |
WDOG_CS1_TST(0x00) |
WDOG_CS1_WAIT_MASK |
WDOG_CS1_STOP_MASK;
#endif /* (DISABLE_WDOG) */
#endif
result: the periodic is 51s too;it looks llike somewhere else what i don't find.
Last is how i load the code into the actrual mcu: I don't configurate anything ,choose 1 and press 2.
Is there any problem?
Please check my answers below:
1. This could be caused because Run out of reset puts a core in run mode after reset. Please check below document.
http://cache.freescale.com/files/soft_dev_tools/doc/user_guide/CW_PA_CF_UG.pdf
2. If you check the Peripheral register structure for WDOG in SKEAZN84.h you could see the following:
As you can see TOVALH is set first when using TOVAL struct.
3. I think the following post could help you to use NMI pin as GPIO.
https://community.nxp.com/thread/455185
Hope it helps!
Best regards,
Felipe
I am using S32DS to flash program and debug a S9keazn8 and all is fine,(except watchdog). What I want to do is program it so that it runs from reset without the debugger pod attached. When I reset the microcontroller (by Power on) the firmware in flash doesn’t run, with or without the debugger attached. I've recently migrated to S32DS from Codewarrior 10.7 and this was not the behaviour there.
Then I create a same project in CodeWarrior,when I use "Run" everything is OK.
It seems like that the programm is not be download into the MCU If I use "Debug" in CodeWarrior too .So I think that everything may be OK if I use "run" in S32DS .
The problem confused me about a week,really drives me mad.
When I use "run" in S32DS,there is an problem.
Thanks for your help!
There is still a problem confused me that what is the difference between "v1_5_Debug_PNE"and "v1_5_Release_PNE" and which one should be used to load into the mcu.
In Build Configuration:Debug ; Use Active;Select AutoMatically;Release .Which one should I choose?
Hi,thanks for your help!
Codewarrior 10.7
I found someting new Today,
1:when I choose "run out of reset",then when PowerOn : the MCU works well and If i don't choose run out of reset,the MCU looks like not be load the programm.
So what is the reason and is there any corresponding document?
2:Please look at the Register WDOG_TOVAL , I set it to 100 but WDOG_TOVALH is 100(I think the WDOG_TOVALL should be 100 ).The reset period is about 22s measured by oscilloscope.This is really confused me.
3:my schematic diagram;
Is there any problem with the resetting-related resistance value or capacitance value?
Is there any problem if I use the pin 8 as general I/O?
VDDX is 5V;
Sorry for bother you angin!
Please check my answers below:
1. This could be caused because Run out of reset puts a core in run mode after reset. Please check below document.
http://cache.freescale.com/files/soft_dev_tools/doc/user_guide/CW_PA_CF_UG.pdf
2. If you check the Peripheral register structure for WDOG in SKEAZN84.h you could see the following:
As you can see TOVALH is set first when using TOVAL struct.
3. I think the following post could help you to use NMI pin as GPIO.
https://community.nxp.com/thread/455185
Hope it helps!
Best regards,
Felipe
In addition,the resister is changing when debuging.Does it mean that the watchDog is working?
when I pause in the debugingby pressed the "suspend" button,then press "step into" ,then the information is appeare,what is the reason?
the following is the code,is there anything wrong?
