Cannot get KBD interrupt to work - 89LPC922

Andy, here is the code I am using.

/*------------------------------------------------------------------------------
IR Link
Jason van Ryan
------------------------------------------------------------------------------*/

extern void keypad_isr(void); /* prototype declaration for keypad iser */

#include <REG922.H> /* special function register declarations */ /* for the Philips P89C922 device */
#include <STDIO.H> /* prototype declarations for I/O functions */
/*----------------------------------------------------------------------------*/

/* push button function defines */
#define power 1
#define mute 2
#define vup 4
#define vdn 8
#define sel 16
#define bat 32
#define test 64 /* put the controller into continuous Tx mode which /* cycles through all the commands and measures battery */
#define bat_test 48 /* continuosly Tx the battery voltage */

/*----------------------------------------------------------------------------*/ void keypad_isr(void) interrupt 7 using 0
{ unsigned int command; EKBI=0; /* disable the keypad int */

command = (P0 & 32); /* save the button status and the power status */ //pstat = (P0 & ~32); /* still to add pstat routines here */

TR0 = 1; /* start timer 0. the 38KHz carrier is now running */

switch (command) /* one of the input buttons was pushed - execute the command */ { case power: printf ("pwr\n"); case mute: printf ("mute\n"); case vup: printf ("vup\n"); case vdn: printf ("vdn\n"); case sel: printf ("sel\n"); case test: printf ("test\n"); }

TR0=0; /* done, turn the carrier off */ TxD = 0; /* make sure the TxD pin is LOW after transmission */ KBCON &= 0xFE; /* clear interrupt flag */ EKBI=1; /* enable the keypad interrupt again. Done and exit to main */
}

/*--------------------------------------------------------------------------------*/

void main() { /* first, set up the keypad */

EA=0; /* configure the ports - P0 is all inputs, TxD PP, P1.2 open drain */ P0M1 |= 0xFF; P0M2 &= 0x00;

P1M1 &= 0xFE; P1M1 |= 0x24; P1M2 &= 0xDF; P1M2 |= 0x05;

P3M1 |= 0x03; P3M2 &= 0xFC;

/* set up the keypad interrupt pattern */ KBPATN = 0x3F; // define pattern KBMASK = 0x3F; // define P0 pins that trigger interrupt - port line 0 to 5 KBCON = 0x00; // pattern must not match //KBCON = 0x02; // pattern must match - this line for test purposes

// set isr priority to 1 IP1 &= 0xFD; IP1H &= 0xFD; IP1 |= 0x02;

/* set up the carrier freq - use T0 and toggling P1.2 */ TMOD &= 0xF0; /* T0 is enabled with TR0 = 1; T1 is enables when INT1 is low */ TMOD |= 0x02; /* T0 is set to 8 bit auto reload timer - cycle time is 26.3uS = 37.4KHz */ TAMOD &= 0xFE; TH0 = 0xCF; /* this is the reload value for TL0. Note, the counter increments every 2 clock cycles */ TL0 = 0xCF; P1M1 |= 0x04; /* T0 pin is an open-drain output */ P1M2 |= 0x04; AUXR1 |= 0x10; /* enable toggle output - but do not run the timer until an interrupt */ /* enable keypad interrupt */

/* set up the UART */ SCON = 0x52; /* initialize UART */ BRGR0 = 0x01; /* 300 baud */ BRGR1 = 0x60; BRGCON = 0x03;

KBCON &= 0xFE; /* clear KBI interrupt flag */

EKBI = 1;

EA=1; T0=1; /* WERYRTY just to test if we are running */

printf ("test 123456789 123456789 \n"); TxD = 0; /* make sure TxD port line is LOW */ T0=0; /* turn carroer off */

while (1){}; /* wait here for keypad interrupt */

}

here is the message I am getting

'Warning, uncalled segment, ignored for overlay process
SEGMENT: ?PR?Keypad_ISR?HELLO
Program Size: Data 32.1 XDATA = 0 CODE = 1407
Creating hex file from Hello
"Hello" O Errors 1 Warning

Andy, here is the code I am using.

/*------------------------------------------------------------------------------
IR Link
Jason van Ryan
------------------------------------------------------------------------------*/

extern void keypad_isr(void); /* prototype declaration for keypad iser */

#include <REG922.H> /* special function register declarations */ /* for the Philips P89C922 device */
#include <STDIO.H> /* prototype declarations for I/O functions */
/*----------------------------------------------------------------------------*/

/* push button function defines */
#define power 1
#define mute 2
#define vup 4
#define vdn 8
#define sel 16
#define bat 32
#define test 64 /* put the controller into continuous Tx mode which /* cycles through all the commands and measures battery */
#define bat_test 48 /* continuosly Tx the battery voltage */

/*----------------------------------------------------------------------------*/ void keypad_isr(void) interrupt 7 using 0
{ unsigned int command; EKBI=0; /* disable the keypad int */

command = (P0 & 32); /* save the button status and the power status */ //pstat = (P0 & ~32); /* still to add pstat routines here */

TR0 = 1; /* start timer 0. the 38KHz carrier is now running */

switch (command) /* one of the input buttons was pushed - execute the command */ { case power: printf ("pwr\n"); case mute: printf ("mute\n"); case vup: printf ("vup\n"); case vdn: printf ("vdn\n"); case sel: printf ("sel\n"); case test: printf ("test\n"); }

TR0=0; /* done, turn the carrier off */ TxD = 0; /* make sure the TxD pin is LOW after transmission */ KBCON &= 0xFE; /* clear interrupt flag */ EKBI=1; /* enable the keypad interrupt again. Done and exit to main */
}

/*--------------------------------------------------------------------------------*/

void main() { /* first, set up the keypad */

EA=0; /* configure the ports - P0 is all inputs, TxD PP, P1.2 open drain */ P0M1 |= 0xFF; P0M2 &= 0x00;

P1M1 &= 0xFE; P1M1 |= 0x24; P1M2 &= 0xDF; P1M2 |= 0x05;

P3M1 |= 0x03; P3M2 &= 0xFC;

/* set up the keypad interrupt pattern */ KBPATN = 0x3F; // define pattern KBMASK = 0x3F; // define P0 pins that trigger interrupt - port line 0 to 5 KBCON = 0x00; // pattern must not match //KBCON = 0x02; // pattern must match - this line for test purposes

// set isr priority to 1 IP1 &= 0xFD; IP1H &= 0xFD; IP1 |= 0x02;

/* set up the carrier freq - use T0 and toggling P1.2 */ TMOD &= 0xF0; /* T0 is enabled with TR0 = 1; T1 is enables when INT1 is low */ TMOD |= 0x02; /* T0 is set to 8 bit auto reload timer - cycle time is 26.3uS = 37.4KHz */ TAMOD &= 0xFE; TH0 = 0xCF; /* this is the reload value for TL0. Note, the counter increments every 2 clock cycles */ TL0 = 0xCF; P1M1 |= 0x04; /* T0 pin is an open-drain output */ P1M2 |= 0x04; AUXR1 |= 0x10; /* enable toggle output - but do not run the timer until an interrupt */ /* enable keypad interrupt */

/* set up the UART */ SCON = 0x52; /* initialize UART */ BRGR0 = 0x01; /* 300 baud */ BRGR1 = 0x60; BRGCON = 0x03;

KBCON &= 0xFE; /* clear KBI interrupt flag */

EKBI = 1;

EA=1; T0=1; /* WERYRTY just to test if we are running */

printf ("test 123456789 123456789 \n"); TxD = 0; /* make sure TxD port line is LOW */ T0=0; /* turn carroer off */

while (1){}; /* wait here for keypad interrupt */

}

here is the message I am getting

'Warning, uncalled segment, ignored for overlay process
SEGMENT: ?PR?Keypad_ISR?HELLO
Program Size: Data 32.1 XDATA = 0 CODE = 1407
Creating hex file from Hello
"Hello" O Errors 1 Warning

I said:

"Please carefully read & follow the instructions for posting source code;
use spaces for layout, not TABs;
use copy & paste - don't manually re-type;
be sure to check it in the 'Preview' before posting!"

OK, here's a picture for you: www.danlhenry.com/.../keil_code.png

ok clear now. Thanks