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INT_EXT2 on PIC18F458

 
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mnv



Joined: 04 Aug 2004
Posts: 7

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INT_EXT2 on PIC18F458
PostPosted: Fri Aug 06, 2004 5:38 am     Reply with quote
hi!

i'm using the pic18f458 and wanted to use the int2-pin (rb2) for external interrupt. but there is no interrupt constant INT_EXT2 defined in the 18f458.h (only INT_EXT and INT_EXT1).
so how can i use the external interrupt 2 in my code?

thanks!

cya
i2c2k
Mark



Joined: 07 Sep 2003
Posts: 2838
Location: Atlanta, GA

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PostPosted: Fri Aug 06, 2004 5:41 am     Reply with quote
You can always use the PIC's registers to set things up. Refer to the section in the datasheet for which registers to set.
Mark



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Posts: 2838
Location: Atlanta, GA

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PostPosted: Fri Aug 06, 2004 5:43 am     Reply with quote
Checking my header file, I found this:
Code:

////////////////////////////////////////////////////////////////// INT
// Interrupt Functions: ENABLE_INTERRUPTS(), DISABLE_INTERRUPTS(),
//                      EXT_INT_EDGE()
//
// Constants used in EXT_INT_EDGE() are:
#define L_TO_H              0x40
#define H_TO_L                 0
// Constants used in ENABLE/DISABLE_INTERRUPTS() are:
#define GLOBAL                    0xF2C0
#define INT_RTCC                  0xF220
#define INT_TIMER0                0xF220
#define INT_TIMER1                0x9D01
#define INT_TIMER2                0x9D02
#define INT_TIMER3                0xA002
#define INT_EXT                   0xF210
#define INT_EXT1                  0xF008
#define INT_EXT2                  0xF010
#define INT_RB                    0xF208
#define INT_PSP                   0x9D80
#define INT_AD                    0x9D40
#define INT_RDA                   0x9D20
#define INT_TBE                   0x9D10
#define INT_SSP                   0x9D08
#define INT_CCP1                  0x9D04
#define INT_CCP2                  0xA001
#define INT_BUSCOL                0xA008
#define INT_LOWVOLT               0xA004
#define INT_CANIRX                0xA380
#define INT_CANWAKE               0xA340
#define INT_CANERR                0xA320
#define INT_COMP                  0xA040
#define INT_EEPROM                0xA010
#define INT_TBE0                  0xA304
#define INT_TBE1                  0xA308
#define INT_TBE2                  0xA310
#define INT_RDA0                  0xA301
#define INT_RDA1                  0xA302
#define INT_CANTX2                0xA310
#define INT_CANTX1                0xA308
#define INT_CANTX0                0xA304
#define INT_CANRX1                0xA302
#define INT_CANRX0                0xA301


Maybe yours is old.
mnv



Joined: 04 Aug 2004
Posts: 7

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PostPosted: Fri Aug 06, 2004 5:51 am     Reply with quote
hm... why has it been missing?
thank you!
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