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PIC24FJ64GA004 SLEEP
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Ttelmah



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PostPosted: Fri Feb 12, 2021 7:20 am     Reply with quote

No, if you are from 5.049, that was when the CCS code did not work.
This is why sleep_full is not working for you.

Stick with the assembler for this.
georpo



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PostPosted: Fri Feb 12, 2021 7:28 am     Reply with quote

Changed to 5.008 and it sleeps, at least with the small test program.
5.008 does not check anything. Just sleeps!

The problem is that even with the assembly "some times" it does not sleep. That is why I started searching for the problem in the first case.



Code:

---  E:\WORK\herado\mine\code\V13test\v1.c  ------------------------------------------------------
1:                 
  0000  040210     goto 0x000210
2:                 #include <24FJ64GA004.h>
3:                 
4:                 #FUSES NOWDT             //Watch Dog Timer
5:                 #FUSES NOPROTECT         //Code not protected from reading
6:                 #FUSES FRC_PLL           //Internal osc + PLL               
7:                 #FUSES NOIESO            //Internal External Switch Over mode disabled
8:                 #FUSES NOPR              //Pimary oscillator disabled
9:                 #FUSES OSCIO             //OSC2 is general purpose output         
10:                #FUSES NOCKSFSM          //Clock Switching is disabled, fail Safe clock monitor is disabled
11:                #FUSES NOWRT             //Program memory not write protected
12:                #FUSES NODEBUG           //No Debug mode for ICD
13:                #BUILD (stack=1024)
14:               
15:                #use delay(int=32M)
  0200  E00000     cp0.w 0x0000
  0202  AF2042     btsc.b 0x0042,#1
  0204  370004     bra 0x00020e
  0206  093E7B     repeat #15995
  0208  000000     nop
  020A  E90000     dec.w 0x0000,0x0000
  020C  3AFFFC     bra nz, 0x000206
  020E  060000     return
16:               
17:                #use    fast_io(A)
18:                #use    fast_io(B)
19:                #use    fast_io(C)
20:               
21:                #word LATA=getenv("SFR:LATA")
22:                #word LATB=getenv("SFR:LATB")
23:                #word LATC=getenv("SFR:LATC")
24:               
25:                #word TRISA=getenv("SFR:TRISA")
26:                #word TRISB=getenv("SFR:TRISB")
27:                #word TRISC=getenv("SFR:TRISC")
28:               
29:                #word PORTA=getenv("SFR:PORTA")
30:                #word PORTB=getenv("SFR:PORTB")
31:                #word PORTC=getenv("SFR:PORTC")
32:               
33:                #bit  Led1=LATA.8
34:                #bit  Led2=LATA.1
35:               
36:                void Main(){
  0210  A8E081     bset.b 0x0081,#7
  0212  EF2744     clr.w 0x0744
  0214  EFA32C     setm.w 0x032c
  0216  22400F     mov.w #0x2400,0x001e
  0218  227FF0     mov.w #0x27ff,0x0000
  021A  B7A020     mov.w 0x0000,0x0020
  021C  000000     nop
  021E  22400F     mov.w #0x2400,0x001e
  0220  227FF0     mov.w #0x27ff,0x0000
  0222  B7A020     mov.w 0x0000,0x0020
  0224  000000     nop
37:               
38:                   TRISA=0b0000000000000001;       
  0226  200014     mov.w #0x1,0x0008
  0228  881604     mov.w 0x0008,0x02c0
39:                   TRISB=0b1010001110100000;
  022A  2A3A04     mov.w #0xa3a0,0x0008
  022C  881644     mov.w 0x0008,0x02c8
40:                   TRISC=0b0000000010000011;       
  022E  200834     mov.w #0x83,0x0008
  0230  881684     mov.w 0x0008,0x02d0
41:               
42:                   Led1=1;
  0232  A802C5     bset.b 0x02c5,#0
43:                   delay_ms(100);
  0234  200640     mov.w #0x64,0x0000
  0236  020200     call 0x000200
44:                   Led1=0;
  023A  A902C5     bclr.b 0x02c5,#0
45:                   delay_ms(100);
  023C  200640     mov.w #0x64,0x0000
  023E  020200     call 0x000200
46:               
47:                   SLEEP(SLEEP_FULL);
  0242  FE4000     pwrsav #0
48:               
49:                   delay_cycles(1);
  0244  000000     nop
50:                   reset_cpu();
  0246  FE0000     reset
51:                }
52:               
  0248  FE4000     pwrsav #0

_________________
George.
Ttelmah



Joined: 11 Mar 2010
Posts: 16935

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PostPosted: Fri Feb 12, 2021 7:49 am     Reply with quote

You'll have to use the assembler. 5.049, was bang when the CCS code had
problems. It was working OK a couple of versions before this, and then
OK again a couple of versions later. 5.051 doesn't have the extra tests,
nor does 5.048.
The tests were just a code 'fault'. If you look, they make no sense, with
tests being skipped by other tests, and the variables being tested are
not ones that make any sense at all. It was a known bug at the time.
Ttelmah



Joined: 11 Mar 2010
Posts: 16935

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PostPosted: Fri Feb 12, 2021 8:39 am     Reply with quote

do try getting rid of the delay between clearing the interrupts and trying to
sleep.
georpo



Joined: 18 Nov 2008
Posts: 253
Location: Athens, Greece.

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PostPosted: Mon Feb 15, 2021 1:36 am     Reply with quote

Hello again!

Back to version 5.049 and to the simple program below.
When I press the "Down Button" the Led1 flashes 100mS and then the CPU sleeps.
Again 1/10 times I press the button, the LED flashes and then flashes again as if it skipped sleep.

Here I have no serials no rtc, no timers, no spi, no adc.

What could be causing this?
Is this the proper way to wake from sleep?

Code:


#include <24FJ64GA004.h>

#FUSES NOWDT             //Watch Dog Timer
#FUSES NOPROTECT         //Code not protected from reading
#FUSES FRC_PLL           //Internal osc + PLL               
#FUSES NOIESO            //Internal External Switch Over mode disabled
#FUSES NOPR              //Pimary oscillator disabled
#FUSES OSCIO             //OSC2 is general purpose output         
#FUSES NOCKSFSM          //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOWRT             //Program memory not write protected
#FUSES NODEBUG           //No Debug mode for ICD
#BUILD (stack=1024)

#use delay(int=32M)

#use    fast_io(A)
#use    fast_io(B)
#use    fast_io(C)

#word LATA=getenv("SFR:LATA")
#word LATB=getenv("SFR:LATB")
#word LATC=getenv("SFR:LATC")

#word TRISA=getenv("SFR:TRISA")
#word TRISB=getenv("SFR:TRISB")
#word TRISC=getenv("SFR:TRISC")

#word PORTA=getenv("SFR:PORTA")
#word PORTB=getenv("SFR:PORTB")
#word PORTC=getenv("SFR:PORTC")

#bit  Led1=LATA.8
#bit  Led2=LATA.1

#bit  BTN1=PORTB.8      //CN22 up button
#bit  BTN2=PORTB.7      //CN23 down button


#INT_CNI
Void CNIISR(){   

}

void Main(){

   TRISA=0b0000000000000001;       
   TRISB=0b1010001110100000;
   TRISC=0b0000000010000011;       

   Led1=1;
   delay_ms(100);
   Led1=0;
   delay_ms(100);

   enable_interrupts( INTR_CN_PIN | PIN_B7);       //Down button
   
    #asm
     pwrsav #0
    #endasm

    delay_cycles(1);

   reset_cpu();
}

_________________
George.
Ttelmah



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Posts: 16935

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PostPosted: Mon Feb 15, 2021 1:43 am     Reply with quote

Glaring thing is that your interrupt on change handler must read the port
bit on which the change interrupt is set. Otherwise It'll keep resetting.
georpo



Joined: 18 Nov 2008
Posts: 253
Location: Athens, Greece.

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PostPosted: Mon Feb 15, 2021 1:58 am     Reply with quote

I added a 500mS flash to Led2 so I know when the CPU woke, before resetting.

Proper sequence should be:
1) press the Button. ->wake CPU
2) Led2 500mS Flash
3) CPU reset
4) Led1 500mS Flash
5) Sleep

The above of course works.
About 1 of 20 cycles this happens:

1) press the Button. ->wake CPU
2) Led2 500mS Flash
3) CPU reset
4) Led1 500mS Flash
5) Led1 500mS Flash
6) Cycle continues normally

As if the sleep command causes a reset. Or the reset command is prefetched way too early or something.

Please look:



Code:


#include <24FJ64GA004.h>

#FUSES NOWDT             //Watch Dog Timer
#FUSES NOPROTECT         //Code not protected from reading
#FUSES FRC_PLL           //Internal osc + PLL               
#FUSES NOIESO            //Internal External Switch Over mode disabled
#FUSES NOPR              //Pimary oscillator disabled
#FUSES OSCIO             //OSC2 is general purpose output         
#FUSES NOCKSFSM          //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOWRT             //Program memory not write protected
#FUSES NODEBUG           //No Debug mode for ICD
#BUILD (stack=1024)

#use delay(int=32M)

#use    fast_io(A)
#use    fast_io(B)
#use    fast_io(C)

#word LATA=getenv("SFR:LATA")
#word LATB=getenv("SFR:LATB")
#word LATC=getenv("SFR:LATC")

#word TRISA=getenv("SFR:TRISA")
#word TRISB=getenv("SFR:TRISB")
#word TRISC=getenv("SFR:TRISC")

#word PORTA=getenv("SFR:PORTA")
#word PORTB=getenv("SFR:PORTB")
#word PORTC=getenv("SFR:PORTC")

#bit  Led1=LATA.8
#bit  Led2=LATA.1

#bit  BTN1=PORTB.8      //CN22 up button
#bit  BTN2=PORTB.7      //CN23 down button


#INT_CNI
Void CNIISR(){   

}

void Main(){

   TRISA=0b0000000000000001;       
   TRISB=0b1010001110100000;
   TRISC=0b0000000010000011;       

   Led1=1;
   delay_ms(500);
   Led1=0;
   delay_ms(500);

   enable_interrupts( INTR_CN_PIN | PIN_B7);       //Down button
   
    #asm
     pwrsav #0
    #endasm

   Led2=1;
   delay_ms(500);
   Led2=0;
   delay_ms(500);

   reset_cpu();
}



As for reading the CN PIN, I will add it but in the first case, the RTC woke up the CPU and I had the same problems. This is just a test program to simplify and isolate the problem.
_________________
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Ttelmah



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PostPosted: Mon Feb 15, 2021 3:54 am     Reply with quote

Do some diagnostics. Isolate 'why' the CPU says it is resetting. So something
like:
Code:

#include <24FJ64GA004.h>

#FUSES NOWDT             //Watch Dog Timer
#FUSES NOPROTECT         //Code not protected from reading
#FUSES FRC_PLL           //Internal osc + PLL               
#FUSES NOIESO            //Internal External Switch Over mode disabled
#FUSES NOPR              //Pimary oscillator disabled
#FUSES OSCIO             //OSC2 is general purpose output         
#FUSES NOCKSFSM          //Clock Switching is disabled, fail Safe clock monitor is disabled
#FUSES NOWRT             //Program memory not write protected
#FUSES NODEBUG           //No Debug mode for ICD
#BUILD (stack=1024)

#use delay(int=32M)

#use    fast_io(A)
#use    fast_io(B)
#use    fast_io(C)

#word LATA=getenv("SFR:LATA")
#word LATB=getenv("SFR:LATB")
#word LATC=getenv("SFR:LATC")

#word TRISA=getenv("SFR:TRISA")
#word TRISB=getenv("SFR:TRISB")
#word TRISC=getenv("SFR:TRISC")

#word PORTA=getenv("SFR:PORTA")
#word PORTB=getenv("SFR:PORTB")
#word PORTC=getenv("SFR:PORTC")

#bit  Led1=LATA.8
#bit  Led2=LATA.1

#bit  BTN1=PORTB.8      //CN22 up button
#bit  BTN2=PORTB.7      //CN23 down button


#INT_CNI
Void CNIISR(){ 
   int8 dummy;
   dummy=input(PIN_B7);
}

const int16 rtimes[500,1000,1000,1000,1000,1000,500,2000,
2000,2000,2000,2000,2000,2000,3000,3000};
void Main(){
   int8 reason();
   int16 time=500;
   reason=restart_cause();
   TRISA=0b0000000000000001;       
   TRISB=0b1010001110100000;
   TRISC=0b0000000010000011;       
   if (reason>15)
      reason=15; //trap impossible reason
   time=rtimes[reason];
   Led1=1;
   delay_ms(time);
   Led1=0;
   delay_ms(time);
   //now the flash time will reflect the restart_cause
   reason=input(PIN_B7);
   clear_interrupt(INTR_CN_PIN); //ensure interrupt wakes off
   enable_interrupts( INTR_CN_PIN | PIN_B7);       //Down button
   
    #asm
     pwrsav #0
    #endasm

   Led2=1;
   delay_ms(500);
   Led2=0;
   delay_ms(500);

   reset_cpu();
}

Then the flash time will tell you why the chip is resetting.
georpo



Joined: 18 Nov 2008
Posts: 253
Location: Athens, Greece.

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PostPosted: Mon Feb 15, 2021 4:03 am     Reply with quote

From PIC24HJXXXGPX06/X08/X10 Family Silicon Errata:

Quote:

When the VREGS bit (RCON<8>) is set to a logic
‘0’, the device may reset, and higher sleep current
may be observed.
Work around
Ensure that the VREGS bit (RCON<8>) is set to a
logic ‘1’ for device Sleep mode operation.


So:
Code:

    RCON|=0x100;   
    #asm
     pwrsav #0
    #endasm



Yes my CPU is FJ and not HJ but solved my problem.
_________________
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Ttelmah



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PostPosted: Mon Feb 15, 2021 4:42 am     Reply with quote

I always say to check errata, but finding that a documented erratum
for another chip applies is not good. Report this to MicroChip.
georpo



Joined: 18 Nov 2008
Posts: 253
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PostPosted: Mon Feb 15, 2021 5:06 am     Reply with quote

I wasted many hours on this. And as usual not being my fault. I consider the problem solved and not bother anymore.

Ttelmah once again sincerely thanks for the support.
_________________
George.
Ttelmah



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PostPosted: Mon Feb 15, 2021 7:18 am     Reply with quote

and (of course), you had the 'double' issue, with a compiler fault and the
chip problem as well.... Sad
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