i.MX53 - Interrupt vector issue

tiagosilva — Mon, 24 Feb 2014 19:41:45 GMT

Hello,

I am working with i.MX535 QSB from Freescale in IAR EWARM. I had used GettingStarted example from IAR EWARM, modifying the project like shown below (main.c).

I am not able to get interrupts in IRQ_Handler address (0x18), even enabling TZIC #39. Anyone could please help me to get my LED on P7_7 blinking?

The code is working well when pooling GPTSR_bit.OF1 bit in while(1), like suggested in the original GettingStarted project. But I need to get interrupts directly from the interrupt vector, what I can easily do on ARM7 platform for example.

Thanks,

Tiago

/** include files **/

#include <Freescale/iomcimx535.h>

#include <intrinsics.h>

#include "board.h"

/* GPT1 Tick per second*/

#define GPT_TICK_PER_SEC 4

/** private data **/

static volatile Int8U Gpt1Counter;

volatile unsigned char flag0;

/**

__irq void IRQ_Handler(void)

{

__DSB();

if (flag0 < 0xFF)

{

flag0++;

}

GPTSR_bit.OF1= 1;

__DSB();

return;

}

/**

int main(void)

{

// USER LED init - GPIO_7[7]

IOMUXC_SW_MUX_CTL_PAD_PATA_DA_1_bit.MUX_MODE = 1;

GPIO7_DR_bit.no7 = 0;

GPIO7_GDIR_bit.no7 = 1;

// Init GPT

Gpt1Counter = 0;

// Select CKIL for timer clock - Low Frequency Reference Clock

GPTCR_bit.CLKSRC = 4;

// Init the Timer prescaler

GPTPR_bit.PRESCALER = 0;

// Init timer tick interval

GPTOCR1 = CKIL/GPT_TICK_PER_SEC;

//Enable Interrup on compare

GPTIR_bit.OF1IE = 1;

// Enable GPT1

GPTCR_bit.EN = 1;

/* Configure TZIC Interrupt Controller */

TZIC_ENSET1_bit.INTENSET39 = 1;

TZIC_INTSEC1_bit.SECURE39 = 1;

TZIC_PRIOMASK_bit.MASK = 0x1F;

TZIC_PRIORITY9_bit.PRIO39 = 0x20;

TZIC_INTCTRL = 0x80010001;

__enable_interrupt();

while (1)

{

if (flag0)

{

flag0 = 0;

++Gpt1Counter;

GPIO7_DR_bit.no7 = (1 & Gpt1Counter);

}

Re: i.MX53 - Interrupt vector issue

alejandrolozan1 — Mon, 10 Mar 2014 22:35:11 GMT

Hi,

I believe that the attached example for GPIO interrupt for i.MX53QSB, can help.

Please note that this is unofficial example.

Have a great day,
Alejandro

Re: i.MX53 - Interrupt vector issue

victorsaldaña — Thu, 19 Jun 2014 23:46:07 GMT

Hola, Estoy buscando una forma de accesar a los GPIO de usuario (user1, user2) de la i.MX53 QSB, me podria ayudar con un ejemplo en IAR, o UBUNTU.?

Gracias

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i.MX53 - Interrupt vector issue

Re: i.MX53 - Interrupt vector issue

Re: i.MX53 - Interrupt vector issue