S32KのトピックRe: Toggle LED using interrupt timer of 10ms with AUTOSAR

Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Wed, 06 Mar 2024 12:49:22 GMT

Hi,

I want to toggle the LEDs using an interrupt timer.

I have managed to toggle the LED using incremental count as seen in the link below,

Solved: Re: Turn on the GPIO using NXPs32k322 - NXP Community

I want to generate an interrupt every 10ms. Any help is appreciated.

Regards,

Pratik

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

Julián_AragónM — Wed, 06 Mar 2024 23:58:03 GMT

Hi @pratik_a,

The RTD 4.0.0 package includes examples for the General Purpose Timer:

After the initialization the channel will start counting, the notification will be generated and a 'while(1) loop' will run to blink a LED. You can use these examples as reference and modify the counter to change the period.

Best regards,
Julián

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Thu, 07 Mar 2024 11:03:35 GMT

Hi @Julián_AragónM ,

I tried the GPT example. I did all the necessary settings in the configuration tools. I'm posting my code below. Somehow it doesn't work, Kindly help.

/**

* @file main.c

* @addtogroup main_module main module documentation

* @{

/* Including necessary configuration files. */

#include "Mcal.h"

#include "Mcu.h"

#include "Port.h"

#include "Dio.h"

#include "Gpt.h"

#include "Platform.h"

static volatile uint8 toggleLed = 0U;

void Gpt_PitNotification(void)

{

toggleLed = 1U;

}

/*void TestDelay(uint32 delay);

void TestDelay(uint32 delay)

{

static volatile uint32 DelayTimer = 0;

while(DelayTimer<delay)

{

DelayTimer++;

}

DelayTimer=0;

}*/

/* User includes */

/*!

\brief The main function for the project.

\details The startup initialization sequence is the following:

* - startup asm routine

* - main()

int main(void)

{

uint8 pinValue = STD_LOW;

Mcu_Init(&Mcu_Config_BOARD_InitPeripherals);

/* Initialize the clock tree and apply PLL as system clock */

Mcu_InitClock(McuClockSettingConfig_0);

#if (STD_OFF == MCU_NO_PLL)

while ( MCU_PLL_LOCKED != Mcu_GetPllStatus() )

{

/* Busy wait until the System PLL is locked */

}

Mcu_DistributePllClock();

#endif

/* Apply a mode configuration */

Mcu_SetMode(McuModeSettingConf_0);

/* Initialize all pins using the Port driver */

Port_Init(NULL_PTR);

/* Initialize Platform driver */

Platform_Init(NULL_PTR);

/* Initialize the high level configuration structure of Gpt driver */

#if (STD_ON == GPT_PRECOMPILE_SUPPORT)

Gpt_Init(NULL_PTR);

#else

Gpt_Init(&Gpt_Config_VS_0);

#endif

/* Start the Gpt timer */

Gpt_StartTimer(GptConf_GptChannelConfiguration_GptChannelConfiguration_0, 20000000U);

/* Enable the Gpt notification to get the event for toggling the LED periodically */

Gpt_EnableNotification(GptConf_GptChannelConfiguration_GptChannelConfiguration_0);

Dio_WriteChannel(83, STD_HIGH);

for(;;)

{

if (1U == toggleLed)

{

//count++;

pinValue = (STD_LOW == pinValue) ? STD_HIGH : STD_LOW;

Dio_WriteChannel(85, pinValue);

toggleLed = 0U;

}

//Dio_WriteChannel(83, STD_HIGH);

//Dio_WriteChannel(85, STD_HIGH);

//TestDelay(2000000);

//Dio_WriteChannel(85, STD_LOW);

//Dio_WriteChannel(83, STD_LOW);

//TestDelay(2000000);

}

return 0;

}

/** @} */

Also, can you guide me to where the void Gpt_PitNotification(void) function is declared? I just want to confirm if it is timer interrupt callback function?

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

Julián_AragónM — Thu, 07 Mar 2024 21:47:54 GMT

Hi @pratik_a,

PitNotification should be declared in the pit configuration file. It is indeed a callback function:

Just to confirm, when debugging does the code step into the Gpt_PitNotification function?

Best regards,
Julián

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Mon, 11 Mar 2024 11:50:49 GMT

Hi @Julián_AragónM ,

I have been wanting to implement the Autosar method for timer functionality. As per the example provided, I have included the necessary components please refer to image 1.png

I want to generate an interrupt every 1 millisecond.

Can you also confirm if the callback function is equivalent to ISR implementation in the code? I want to specifically implement an ISR routine which will be called every 1 millisecond, and my state engine will change its state accordingly.

Regards,

Pratik

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

Julián_AragónM — Mon, 11 Mar 2024 23:30:25 GMT

Hi @pratik_a,

It seems the components added to your project are okay, could this be an issue with the initialization of other modules apart from the GPT? Like the GPIO or the clocks? Could you confirm the example runs, and if the callback function is being stepped into?

An Interrupt Service Routine (ISR) is a function which runs when a hardware interrupt is triggered, the same way a Callback is a software implementation of this. An ISR needs to be installed with an interrupt vector (for example in the Siul2_Icu_Ip_BlinkLed_S32K344 example, SIUL_2_IRQn), and a Callback can be added into the interrupt routine.

You can modify the notification/callback function which will be modified by your state engine in this case.

Best regards,
Julián

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Tue, 12 Mar 2024 11:49:50 GMT

Hi,

I have included the snapshots of the included module configs, please take a look and let me know if I'm missing out on something.

I'm using the Segger Edu mini flasher so I'm unaware of how to debug with it. But I'm confident that the callback function is not called. As the LED connected at MSCR 83 glows which is independent of the callback function as seen in code above.

Dio_WriteChannel(83, STD_HIGH);

But the one included in the callback function never toggles.

Can you also confirm from the above code that my callback function is properly called upon and whether it is included in the interrupt vector?

Regards,

Pratik

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Wed, 13 Mar 2024 12:50:11 GMT

Hi,
I'm still unable to make it work. Kindly help me with a way forward.
Regards,
Pratik

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

Julián_AragónM — Wed, 13 Mar 2024 22:57:31 GMT

Hi @pratik_a,

Please make sure the GptIsrEnable and GptChannelIsUsed options are enabled:

Define the Pit notification and the ISR handler is defined:

Best regards,
Julián

Re: Toggle LED using interrupt timer of 10ms with AUTOSAR

pratik_a — Thu, 14 Mar 2024 13:10:44 GMT

Hi @Julián_AragónM

It worked...Thanks for your continuous help.