How can I insert my ISR in MQX?

[admin]

Hi,

working in MQX I don't understand how I can insert my ISR that use DMA timer 0. 

I'm using M52259EVB with MQX_ROM_VECTOR 0, is DMA timer 0 interrupt already used by MQX RTOS? Can I use this interrupt for my application? 

[admin]

Thanks for the support.

[admin]

With this code now the interrupt is running in MQX but I have to set the DTIM3 manually ... can I do it or should I use MQX routines?

static void (_CODE_PTR_ old_isr_dtim3)(pointer);


MCF_DTIM3_DTMR = BASE_TIMER_CLK_BUS_1 | BASE_TIMER_PRESCALER_1 | BASE_TIMER_RESET_AFTER_MATCH | BASE_TIMER_INT_ENABLED | BASE_TIMER_DISABLED;

MCF_DTIM3_DTXMR = BASE_TIMER_STEP_1 | BASE_TIMER_CONTINUE_HALTED | BASE_TIMER_DMA_REQUEST_DISABLED;                

MCF_DTIM3_DTRR = BASE_TIMER_REFERENCE_VALUE;

MCF_DTIM3_DTER |= (uint_8)0x03;                //Clear reference flag

old_isr_dtim3=_int_install_isr(MCF5225_INT_DTIM3, (void (_CODE_PTR_)(pointer))isrINT_DTIM3, NULL);

MCF_INTC0_ICR22 = (uint_8)((DTIM3_INTERRUPT_LEVEL << 3) | DTIM3_INTERRUPT_PRIORITY);

MCF_INTC0_IMRL &= ~IMRL3_TBASE_MASK;


if (NULL == old_isr_dtim3)
        return IO_ERROR; /* could not install new interrupt routine */
        
MCF_DTIM3_DTMR |= (uint_16)0x0001;            //Timer start 

[JuroV]

This code is all right from functionality point of view, nothing must be changed. I was not checking DTIM settings.

[sven_kaemmer · Accepted solution]

Hi, look at the following post, perhaps it can help you.

https://community.freescale.com/message/60274#60274

[admin]

For utilizing my DTIM0 ISR do I modify vector.c inside bsp directory?