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NePe
Joined: 21 Jun 2011
Posts: 9
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| PIC18LF14K50 with compiler 4.120 bug ? |
 Posted: Tue Jun 21, 2011 4:05 pm |
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Hi!
I want to set an interrupt to the RA5 pin but its not working.
I found in the .lst file that the enable_interrupts(INT_RA5) line is incorrect in ASM:
| Code: | .................... enable_interrupts(INT_RA5);
0A1C: BSF FF2.3
0A1E: BSF F7A.5
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The last asm command set the IOCB(F7A) register instead of IOCA(F79) register.
I'm trying to fix it with the following code but the interrupt still not working:
| Code: |
enable_interrupts(GLOBAL);
#ASM
BSF 0xFF2.3
BSF 0xF79.5
#ENDASM
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In the .lst file this is looks like this:
| Code: |
.................... enable_interrupts(GLOBAL);
0A1C: MOVLW C0
0A1E: IORWF FF2,F
.................... #ASM
.................... BSF 0xFF2.3
0A20: BSF FF2.3
.................... BSF 0xF79.5
0A22: BSF F79.5
.................... #ENDASM
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When i try to read the RA5 pin in the main loop the readed values are correct.
What am i doing wrong? |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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NePe
Joined: 21 Jun 2011
Posts: 9
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| Posted: Tue Jun 21, 2011 6:40 pm |
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Here it is:
| Code: |
#include <18LF14K50.h>
#FUSES WDT512, CPUDIV1, LP, NOPLLEN, NOPCLKEN, BORV30, NOIESO, NOMCLR, NOLVP, BBSIZ1K, NOXINST
#use delay(clock=16Mhz, RESTART_WDT)
#use rs232(baud=9600, parity=N, xmit=PIN_C3, rcv=PIN_C4, bits=8, ERRORS, STREAM=RSGSM)
void main() {
setup_oscillator(OSC_16MHZ | OSC_TIMER1 | OSC_31250 | OSC_PLL_OFF);
enable_interrupts(GLOBAL);
enable_interrupts(INT_RA5);
// #ASM
// BSF 0xFF2.3
// BSF 0xF79.5
// #ENDASM
while (1) {
}
}
#int_RA
void RA_isr(void) {
if (!input(PIN_A5)) {
fputs("TEST", RSGSM);
}
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Tue Jun 21, 2011 8:31 pm |
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Pin A5 is one of the oscillator pins. You need to disable it as an oscillator pin.
| Quote: |
#FUSES WDT512, CPUDIV1, LP, NOPLLEN, NOPCLKEN, BORV30,
NOIESO, NOMCLR, NOLVP, BBSIZ1K, NOXINST |
The LP fuse is for a 32.768 KHz watch crystal, but you're using the
internal oscillator. So you need to change LP to INTRC_IO. In addition
to using the correct fuse, it will also allow pin A5 to be used as an i/o pin. |
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NePe
Joined: 21 Jun 2011
Posts: 9
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| Posted: Tue Jun 21, 2011 10:36 pm |
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Hi, you are right!
The problem is the LP fuse instead of INTRC_IO.
As i mentioned i'm tested the RA5 as input when the LP fuse is used and it reads the correct value:
| Code: |
#include <18LF14K50.h>
#FUSES WDT512, CPUDIV1, LP, NOPLLEN, NOPCLKEN, BORV30, NOIESO, NOMCLR, NOLVP, BBSIZ1K, NOXINST
#use delay(clock=16Mhz, RESTART_WDT)
#use rs232(baud=9600, parity=N, xmit=PIN_C3, rcv=PIN_C4, bits=8, ERRORS, STREAM=RSGSM)
void main() {
setup_oscillator(OSC_16MHZ | OSC_TIMER1 | OSC_31250 | OSC_PLL_OFF);
while (1) {
if (!input(GSM_RI)) {
fputs("TEST", RSGSM);
}
}
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The enable_interrupts(INT_RA5); is still has a bug in the compiler, but when i use my asm code instead of it, all works well!
Thanks for your help. |
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ckielstra
Joined: 18 Mar 2004
Posts: 3680
Location: The Netherlands
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| Posted: Wed Jun 22, 2011 1:36 am |
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The Register Address error sounds like a bug in the compiler's chip database. A regular problem with new added processors.
Have you reported the bug to CCS support so they can fix it for the next release? |
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