Multiple GPT Timers on IMXMN8

borges89 — Sat, 22 May 2021 04:22:58 GMT

void GPT1_IRQHandler(void){

GPT_ClearStatusFlags(GPT1, kGPT_OutputCompare1Flag);
gpt1IsrFlag=true;

#if defined __CORTEX_M && (__CORTEX_M == 4U || __CORTEX_M == 7U)
__DSB();
#endif
}

void GPT2_IRQHandler(void){

GPT_ClearStatusFlags(GPT2, kGPT_OutputCompare1Flag);
gpt2IsrFlag=true;
//Gridif_fixed_pll();

#if defined __CORTEX_M && (__CORTEX_M == 4U || __CORTEX_M == 7U)
__DSB();
#endif
}
//Gridif_variable_pll();
/* Add for ARM errata 838869, affects Cortex-M4, Cortex-M4F, Cortex-M7, Cortex-M7F Store immediate overlapping
exception return operation might vector to incorrect interrupt */
//#if defined __CORTEX_M && (__CORTEX_M == 4U || __CORTEX_M == 7U)
// __DSB();
//#endif
//}
void timers_init(void)
{
uint32_t gptFreq;
gpt_config_t gptConfig;

/* Board pin, clock, debug console init */
/* M7 has its local cache and enabled by default,
* need to set smart subsystems (0x28000000 ~ 0x3FFFFFFF)
* non-cacheable before accessing this address region */

CLOCK_SetRootMux(kCLOCK_RootGpt2, kCLOCK_GptRootmuxSystemPll2Div10); /* Set GPT2 source to SYSTEM PLL2 DIV10 100MHZ */
CLOCK_SetRootDivider(kCLOCK_RootGpt2, 1U, 2U);

GPT_GetDefaultConfig(&gptConfig);

/* Initialize GPT modules */
GPT_Init(GPT2, &gptConfig);

/* Set root clock to 400MHZ / 2 = 50MHZ */

CLOCK_SetRootMux(kCLOCK_RootGpt1, kCLOCK_GptRootmuxSysPll1Div2); /* Set GPT1 source to SYSTEM PLL1 DIV2 400MHZ */
CLOCK_SetRootDivider(kCLOCK_RootGpt1, 1U, 4U);

/* Initialize GPT modules */
GPT_Init(GPT1, &gptConfig);

/* Divide GPT clock source frequency by 3 inside GPT module */
GPT_SetClockDivider(GPT1, 3);
GPT_SetClockDivider(GPT2, 1);

/* Get GPT clock frequency */
gptFreq = GPT1_CLK_FREQ;

/* GPT frequency is divided by 3 inside module */
gptFreq /= 3;

/* Set both GPT modules to 1 second duration */
GPT_SetOutputCompareValue(GPT1, kGPT_OutputCompare_Channel1, gptFreq/25000);
GPT_SetOutputCompareValue(GPT2, kGPT_OutputCompare_Channel1, 1628); // 512*60 Hz

/* Enable GPT Output Compare1 interrupt */
GPT_EnableInterrupts(GPT1, kGPT_OutputCompare1InterruptEnable);
GPT_EnableInterrupts(GPT2, kGPT_OutputCompare1InterruptEnable);

/* Enable at the Interrupt */
EnableIRQ(GPT1_IRQn);
EnableIRQ(GPT2_IRQn);
NVIC_SetPriority(GPT1_IRQn, 0x8);
NVIC_SetPriority(GPT2_IRQn, 0x0);
GPT_StartTimer(GPT2);
GPT_StartTimer(GPT1);

/* Set both GPT modules to 1 second duration */
// GPT_SetOutputCompareValue(GPT2, kGPT_OutputCompare_Channel1, 1);

/* Enable GPT Output Compare1 interrupt */
// GPT_EnableInterrupts(GPT2, kGPT_OutputCompare1InterruptEnable);

/* Enable at the Interrupt */
// EnableIRQ(GPT2_IRQn);
// GPT_StartTimer(GPT2);

}

I am trying to run two GPT timer interrupts. While each one of them work but when I try to start them together, debugger in Eclipse reboots. Can you please help me fix this? Is there any demo available where multiple ISRs are configured on different GPT timers.

i.MX ProcessorsのトピックMultiple GPT Timers on IMXMN8

Multiple GPT Timers on IMXMN8