topic Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ? in Kinetis Microcontrollers

How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

rajkumar_yerraj — Fri, 04 Jan 2019 09:49:54 GMT

We have made PTE2 (Pin3 of Controller MK60FN1M0VLQ12) as interrupt pin for ADXL peripheral connected via SPI. We had configured it to detect interrupt on rising edge. We are seeing Pin 3 going High. In Vector.c we had configured the interrupt function.

We are not getting the interrupt even though Pin 3 is high (checked via oscilloscope). We checked ISR function is not hitting by putting a breakpoint in the function.

What could be the issue? Why ISR is not hitting even though in oscilloscope we see pin going HIGH?

For your information, i have attached the screeshots of Vector table, ISR for interrupt and the Interrupt signal captured from the Oscilloscope.

Note: we have checked PTE2 pin by polling method, so it is not continuously high.

Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

Robin_Shen — Mon, 07 Jan 2019 09:24:26 GMT

Please check the value of PORTE_PCR2 during debug:

This pin should be configured as input:

Best Regards,

Robin

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Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

rajkumar_yerraj — Wed, 09 Jan 2019 07:12:49 GMT

Hi Robin

We have configured below registers:

1. IRQC as 0x09 for interrupt on rising edge

2. GPIOx_PDDR as 0 for input

3. GPIO functionality as MUX(0x01)

You can see it in the following screenshot.

We are not getting interrupt.

Can you suggest what could be the reason?

Thanks

Rajkumar

Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

Robin_Shen — Thu, 10 Jan 2019 03:19:01 GMT

Would you please attach your project here, so that I can direct test it?
I am using KDS3.2 configure the ExInt_LDD, I try to connect the PTE2 with PTE4 pin. If I toggle PTE4, the interrupt will happen.

Best Regards,

Robin

Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

rajkumar_yerraj — Thu, 10 Jan 2019 14:46:10 GMT

Hi Robin,

We have configured the same way as you mentioned in the previous discussion and we are getting the interrupt only sometimes and sometimes it is not( i.e., Transition from low to high ) only when in debug mode by putting break point at that point in Events.c . When ISR is not called, interrupt pin remains HIGH.

So, what could be the issue that I am unable to get a continuous interrupt ?

I am sorry, as per company’s policy we could not share you the whole project, I am attaching the files in which the External Interrupt is configured.

Thank You.

Rajkumar

Re: How to trigger the interrupt for SPI in MK60FN1M0VLQ12 controller ?

rajkumar_yerraj — Thu, 10 Jan 2019 15:17:24 GMT

FYI