Objective Development Forums 2010-03-22T23:59:03+02:00 https://forums.obdev.at/app.php/feed/topic/4038 2010-03-22T23:59:03+02:00 2010-03-22T23:59:03+02:00 https://forums.obdev.at/viewtopic.php?t=4038&p=13811#p13811 <![CDATA[Using Pin Change Interrupt]]>
To use, for example, PCINT16 on an ATmega168, the following configuration needs to be set in usbconfig.h:

near the top:

Code: 

#define USB_CFG_DPLUS_BIT       0 // PD0 is PCINT16


at the end:

Code: 

#define USB_INTR_CFG            PCMSK2
#define USB_INTR_CFG_SET        (1 << PCINT16)
#define USB_INTR_CFG_CLR        0 
#define USB_INTR_ENABLE         PCICR
#define USB_INTR_ENABLE_BIT     PCIE2
#define USB_INTR_PENDING        PCIFR
#define USB_INTR_PENDING_BIT    PCIF2
#define USB_INTR_VECTOR         SIG_PIN_CHANGE2


Cheers,
Chris

Statistics: Posted by Guest — Mon Mar 22, 2010 11:59 pm

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