AWR2944: AWR2944

Hi Bishoy,

I would recommend you referring watchdog driver example available at below path (from mmWave MCU Plus SDK installation) to get more understanding of using watchdog in your application.

/mmwave_mcuplus_sdk_04_04_00_01/mcu_plus_sdk_awr294x_08_06_00_28/examples/drivers/watchdog/watchdog_interrupt/awr294x-evm/c66ss0_nortos

.

You are right about no. of instances of RTI and WDT.

There is only one type of watchdog that can be configured to use in windowed mode. Hope above example gives you more insight.

.

Regards,

Jitendra

Hello Jitendra,

Thanks for reply , i checked the example but still can't understand fully , i tried to check other threads for watchdog like this one 
"AWR1642: How to set the watchdog configurations exactly on DSS ?" but not the same target 

the example in /mmwave_mcuplus_sdk_04_04_00_01/mcu_plus_sdk_awr294x_08_06_00_28/examples/drivers/watchdog/watchdog_interrupt/awr294x-evm/c66ss0_nortos

has the following code 

""

void watchdogCallback(void *arg)
{
gWatchdogInt++;
if (gWatchdogInt < 10)
{
Watchdog_clear(gWatchdogHandle[CONFIG_WDT0]);
}
return;
}

void watchdog_interrupt_main(void *args)
{

/* Open drivers to open the UART driver for console */
Drivers_open();
Board_driversOpen();
#if defined(SOC_AM64X) || defined(SOC_AM243X)
HwiP_Params hwiPrms;
int32_t status = SystemP_SUCCESS;
static HwiP_Object gRtiHwiObject;
/* Register interrupt */
HwiP_Params_init(&hwiPrms);
hwiPrms.intNum = CONFIG_WDT0_INTR;
hwiPrms.callback = &watchdogCallback;
status = HwiP_construct(&gRtiHwiObject, &hwiPrms);
DebugP_assert(status == SystemP_SUCCESS);
#endif
DebugP_log("Watchdog interrupt Mode Test Started ...\r\n");

while (gWatchdogInt == 0);

DebugP_log("Watchdog Driver NMI received\r\n");

DebugP_log("All tests have passed!!\r\n");

Board_driversClose();
Drivers_close();

}

""

1) what is the check here doing "#if defined(SOC_AM64X) || defined(SOC_AM243X)" ?

2) what is the relation between hwi and configuring the watchdog ?

3) why i can't find something like Watchdog_open fucntion used ?




I did initially  the below code but not sure what else is needed 

""

Watchdog_Handle watchdogHandle = NULL;

void watchdogCallback(void *arg)
{
Watchdog_clear(watchdogHandle);
return;
}
static int32_t watchdogInit(void)
{

Watchdog_Params watchdogParams;

/* Initialize the Watchdog driver */
Watchdog_init();

/* Initialize the Watchdog driver default parameters */
Watchdog_paramsInit(&watchdogParams);

watchdogParams.resetMode = Watchdog_RESET_OFF;
watchdogParams.callbackFxn = watchdogCallback;
watchdogParams.debugStallMode = Watchdog_DEBUG_STALL_ON;
watchdogParams.windowSize = Watchdog_WINDOW_100_PERCENT;
watchdogParams.expirationTime= 100; //100 ms

/* Open the Watchdog driver */
watchdogHandle = Watchdog_open(0, &watchdogParams);
if (watchdogHandle == NULL)
{
return -1;
}

return 0;
}

""

Hello Bishoy,

Bishoy Emad said:

1) what is the check here doing "#if defined(SOC_AM64X) || defined(SOC_AM243X)" ?

This is set to check what device it is and to run the condition under the preprocessor directive.

Bishoy Emad said:

2) what is the relation between hwi and configuring the watchdog ?

HWI is the hardware interrupt module and in the code using the hwi code you can configure the hardware interrupt. In this case you are doing the same for watchdog interrupt

Bishoy Emad said:

3) why i can't find something like Watchdog_open fucntion used ?

There is no such function, the watchdog is configured in the syscfg and then it is generating the code using the syscfg configuration and you will be able to see how the driver is initialized.

Regards,
Saswat Kumar

3) why i can't find something like Watchdog_open fucntion used ?

There is no such function, the watchdog is configured in the syscfg and then it is generating the code using the syscfg configuration and you will be able to see how the driver is initialized.

BE: why there is no such fucntion ? I can find it in the watchdg driver (watchdog_rti.h)

/**
* \brief Opens a Watchdog object with the index and parameters specified, and
* returns a Watchdog_Handle.
*
* \param index Logical peripheral number for the Watchdog indexed
* into the Watchdog_Config table
*
* \param params Pointer to an parameter block, if NULL it will use
* default values.
*
* \return A Watchdog_Handle on success or a NULL on an error or if it has been
* opened already.
*/
Watchdog_Handle Watchdog_open(uint8_t index, Watchdog_Params *params);


4) is there a guide on generating the code using the syscfg configuration

Hello Bishoy,

You have to build the example using the make command, then the syscfg files will be generated.
Please refer this: C:/ti/mmwave_mcuplus_sdk_04_04_00_01/mcu_plus_sdk_awr294x_08_06_00_28/docs/api_guide_awr294x/DRIVERS_WATCHDOG_PAGE.html

Regards,
Saswat Kumar