How can you open multiple IRQ pins simultaneously

gangliu — Sun, 05 Nov 2017 03:33:42 GMT

HELLO,

I in the use the MKE06Z,I can open separate IRQ arbitrary external interrupt of a pin, but I tried for a long time, not at the same time open multiple external interrupt input, for example, I opened the I0 external interrupt pin, I can't open the I0 at the same time, I1, I2 external interrupt of the three pin

This setting can successfully open a single pin

SIM->PINSEL |= 0x01; //PTI0
SIM->SCGC |= SIM_SCGC_IRQ_MASK;
IRQ->SC = IRQ_SC_IRQEDG_MASK |
IRQ_SC_IRQPE_MASK |
IRQ_SC_IRQIE_MASK ;

I haven't tried any of the following Settings

SIM->PINSEL |= 0x01; //PTI0
SIM->SCGC |= SIM_SCGC_IRQ_MASK;
IRQ->SC = IRQ_SC_IRQEDG_MASK |
IRQ_SC_IRQPE_MASK |
IRQ_SC_IRQIE_MASK ;

SIM->PINSEL |= 0x02; //PTI2
SIM->SCGC |= SIM_SCGC_IRQ_MASK;
IRQ->SC = IRQ_SC_IRQEDG_MASK |
IRQ_SC_IRQPE_MASK |
IRQ_SC_IRQIE_MASK ;

SIM->PINSEL |= 0x03; //PT3
SIM->SCGC |= SIM_SCGC_IRQ_MASK;
IRQ->SC = IRQ_SC_IRQEDG_MASK |
IRQ_SC_IRQPE_MASK |
IRQ_SC_IRQIE_MASK ;

THANK YOU！

Re: How can you open multiple IRQ pins simultaneously

mjbcswitzerland — Mon, 06 Nov 2017 11:30:18 GMT

Hi Gang

The KE06 has a single IRQ input, which can be multiplexed to one of 8 possible pins.
It is not possible to select more than one setting as shown by the SIM_PINSEL1 field to do this:

          #define SIM_PINSEL_IRQPS_PTA5      0x00000000                  // IRQ port pin mapped to PTA5
          #define SIM_PINSEL_IRQPS_PTI0      0x00000001                  // IRQ port pin mapped to PTI0
          #define SIM_PINSEL_IRQPS_PTI1      0x00000002                  // IRQ port pin mapped to PTI1
          #define SIM_PINSEL_IRQPS_PTI2      0x00000003                  // IRQ port pin mapped to PTI2
          #define SIM_PINSEL_IRQPS_PTI3      0x00000004                  // IRQ port pin mapped to PTI3
          #define SIM_PINSEL_IRQPS_PTI4      0x00000005                  // IRQ port pin mapped to PTI4
          #define SIM_PINSEL_IRQPS_PTI5      0x00000006                  // IRQ port pin mapped to PTI5
          #define SIM_PINSEL_IRQPS_PTI6      0x00000007                  // IRQ port pin mapped to PTI6

Doing something like SIM->PINSEL |= 0x01| 0x02| 0x03;
is just selecting 0x03 - the PTI2 setting.

Regards

Mark

Kinetis: http://www.utasker.com/kinetis.html
KE06: http://www.utasker.com/kinetis/FRDM-KE06Z.html

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How can you open multiple IRQ pins simultaneously

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