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ipq
Joined: 20 Aug 2015
Posts: 17
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| PIC18F24J11 + DEEP SLEEP? |
 Posted: Mon Sep 19, 2016 2:29 am |
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Hello,
I think I have a concept problem with the DEEP SLEEP feature...
This is my source code:
| Code: |
#include <main.h>
#INT_EXT
void EXT_isr(void) {
clear_interrupt(INT_EXT);
}
void main() {
setup_timer_2(T2_DIV_BY_4,243,1); //488 us overflow, 488 us interrupt
setup_ccp1(CCP_PWM|CCP_SHUTDOWN_AC_L|CCP_SHUTDOWN_BD_L);
set_pwm1_duty((int16)486);
delay_ms(1000);
ext_int_edge(0, H_TO_L);
enable_interrupts(INT_EXT);
enable_interrupts(GLOBAL);
while(TRUE){
sleep(DEEP_SLEEP);
delay_cycles(1);
//TODO: User Code
}
}
#include <18F24J11.h>
#device ADC=10
#FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
#FUSES NOFCMEN //Fail-safe clock monitor disabled
#FUSES NODSBOR //BOR disabled in Deep Sleep
#FUSES NODSWDT //Deep Sleep Watchdog Timer disabled
#use delay(internal=8000000)
#pin_select P1A=PIN_B2 //BUZZER + PWM |
I'm just testing that the interruption on INT0 is causing the reboot of the MCU, but it seems is not even going to sleep...Maybe a wrong configuration of INT0?
| Code: |
*
0000: GOTO 00DE
*
0008: MOVWF 04
000A: MOVFF FD8,05
000E: MOVFF FE0,06
0012: MOVLB 0
0014: MOVFF FE9,0C
0018: MOVFF FEA,07
001C: MOVFF FE1,08
0020: MOVFF FE2,09
0024: MOVFF FD9,0A
0028: MOVFF FDA,0B
002C: MOVFF FF3,12
0030: MOVFF FF4,13
0034: MOVFF FFA,14
0038: MOVFF FF5,15
003C: MOVFF FF6,16
0040: MOVFF FF7,17
0044: MOVFF 00,0E
0048: MOVFF 01,0F
004C: MOVFF 02,10
0050: MOVFF 03,11
0054: BTFSS FF2.4
0056: GOTO 0060
005A: BTFSC FF2.1
005C: GOTO 00AE
0060: MOVFF 0E,00
0064: MOVFF 0F,01
0068: MOVFF 10,02
006C: MOVFF 11,03
0070: MOVFF 0C,FE9
0074: MOVFF 07,FEA
0078: BSF 07.7
007A: MOVFF 08,FE1
007E: MOVFF 09,FE2
0082: MOVFF 0A,FD9
0086: MOVFF 0B,FDA
008A: MOVFF 12,FF3
008E: MOVFF 13,FF4
0092: MOVFF 14,FFA
0096: MOVFF 15,FF5
009A: MOVFF 16,FF6
009E: MOVFF 17,FF7
00A2: MOVF 04,W
00A4: MOVFF 06,FE0
00A8: MOVFF 05,FD8
00AC: RETFIE 0
.................... #include <main.h>
.................... #include <18F24J11.h>
.................... //////////// Standard Header file for the PIC18F24J11 device ////////////////
.................... ///////////////////////////////////////////////////////////////////////////
.................... //// (C) Copyright 1996, 2014 Custom Computer Services ////
.................... //// This source code may only be used by licensed users of the CCS C ////
.................... //// compiler. This source code may only be distributed to other ////
.................... //// licensed users of the CCS C compiler. No other use, reproduction ////
.................... //// or distribution is permitted without written permission. ////
.................... //// Derivative programs created using this software in object code ////
.................... //// form are not restricted in any way. ////
.................... ///////////////////////////////////////////////////////////////////////////
.................... #device PIC18F24J11
....................
.................... #list
....................
.................... #device ADC=10
....................
.................... #FUSES NOXINST //Extended set extension and Indexed Addressing mode disabled (Legacy mode)
.................... #FUSES NOFCMEN //Fail-safe clock monitor disabled
.................... #FUSES NODSBOR //BOR disabled in Deep Sleep
.................... #FUSES NODSWDT //Deep Sleep Watchdog Timer disabled
....................
.................... #use delay(internal=8000000)
*
00B6: CLRF FEA
00B8: MOVLW 1A
00BA: MOVWF FE9
00BC: MOVF FEF,W
00BE: BZ 00DA
00C0: MOVLW 02
00C2: MOVWF 01
00C4: CLRF 00
00C6: DECFSZ 00,F
00C8: BRA 00C6
00CA: DECFSZ 01,F
00CC: BRA 00C4
00CE: MOVLW 97
00D0: MOVWF 00
00D2: DECFSZ 00,F
00D4: BRA 00D2
00D6: DECFSZ FEF,F
00D8: BRA 00C0
00DA: GOTO 014E (RETURN)
....................
.................... #pin_select P1A=PIN_B2 //BUZZER + PWM
....................
....................
....................
.................... #INT_EXT
....................
.................... void EXT_isr(void) {
.................... clear_interrupt(INT_EXT);
*
00AE: BCF FF2.1
00B0: BCF FF2.1
00B2: GOTO 0060
.................... }
....................
....................
.................... void main() {
*
00DE: CLRF FF8
00E0: BCF FD0.7
00E2: BSF 07.7
00E4: MOVLB E
00E6: MOVLW 55
00E8: MOVWF FA7
00EA: MOVLW AA
00EC: MOVWF FA7
00EE: BCF xFF.0
00F0: MOVLW 0E
00F2: MOVWF xCB
00F4: MOVLW 55
00F6: MOVWF FA7
00F8: MOVLW AA
00FA: MOVWF FA7
00FC: BSF xFF.0
00FE: CLRF F9B
0100: MOVLW 70
0102: MOVWF FD3
0104: MOVF FD3,W
0106: MOVLW FF
0108: MOVLB F
010A: MOVWF x48
010C: BCF FC2.6
010E: BCF FC2.7
0110: MOVF x49,W
0112: ANDLW E0
0114: IORLW 1F
0116: MOVWF x49
0118: MOVLW 07
011A: MOVWF FB4
....................
.................... setup_timer_2(T2_DIV_BY_4,243,1); //488 us overflow, 488 us interrupt
011C: MOVLW 00
011E: IORLW 05
0120: MOVWF FCA
0122: MOVLW F3
0124: MOVWF FCB
....................
.................... setup_ccp1(CCP_PWM|CCP_SHUTDOWN_AC_L|CCP_SHUTDOWN_BD_L);
0126: BCF F93.2
0128: BCF F8A.2
012A: MOVLW 0C
012C: MOVWF FBA
012E: CLRF FBD
0130: CLRF FBE
0132: MOVLW 01
0134: MOVWF FBF
.................... set_pwm1_duty((int16)486);
0136: MOVLW 79
0138: MOVWF FBB
013A: MOVF FBA,W
013C: ANDLW CF
013E: IORLW 20
0140: MOVWF FBA
....................
.................... delay_ms(1000);
0142: MOVLW 04
0144: MOVWF 19
0146: MOVLW FA
0148: MOVWF 1A
014A: MOVLB 0
014C: BRA 00B6
014E: DECFSZ 19,F
0150: BRA 0154
0152: BRA 0158
0154: MOVLB F
0156: BRA 0146
....................
.................... ext_int_edge(0, H_TO_L);
0158: BCF FF1.6
.................... enable_interrupts(INT_EXT);
015A: BSF FF2.4
.................... enable_interrupts(GLOBAL);
015C: MOVLW C0
015E: IORWF FF2,F
....................
.................... while(TRUE){
....................
.................... sleep(DEEP_SLEEP);
0160: MOVLB F
0162: BSF x4D.0
0164: BCF x4D.1
0166: BSF FC0.7
0168: BCF FD3.7
016A: BCF FF2.7
016C: BSF x4D.7
016E: SLEEP
.................... delay_cycles(1);
0170: NOP
0172: BRA 0162
.................... //TODO: User Code
.................... }
....................
.................... }
0174: SLEEP
Configuration Fuses:
Word 1: F4A0 NOWDT STVREN NOXINST NODEBUG NOPROTECT
Word 2: FF98 INTRC_IO T1DIG NOLPT1OSC NOFCMEN IESO WDT32768
Word 3: F9F3 DSWDTOSC_INT RTCOSC_T1 NODSBOR NODSWDT DSWDT2147483648 IOL1WAY MSSPMSK7
Word 4: F1CF WPFP WPEND NOWPCFG WPDIS |
Any idea???
Thanks in advance |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19482
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| Posted: Mon Sep 19, 2016 7:43 am |
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| Code: |
//Comments inline
#include <main.h>
void main(void)
{
setup_timer_2(T2_DIV_BY_4,243,1); //488 us overflow, 488 us interrupt
setup_ccp1(CCP_PWM|CCP_SHUTDOWN_AC_L|CCP_SHUTDOWN_BD_L);
set_pwm1_duty((int16)486);
delay_ms(1000);
ext_int_edge(0, H_TO_L);
enable_interrupts(INT_EXT);
disable_interrupts(GLOBAL);
//An interrupt handler is only called
//when the following things occur:
//Interrupt is triggered
//Interrupt is enabled
//GLOBAL is enabled
//If we enable the interrupt _[u]and do not enable GLOBAL[/u]_
//Then the handler is not needed.
while(TRUE)
{
clear_interrupts(INT_EXT);
//Changing he interrupt edge can trigger the interrupt
//Also it can be set at wake up. Hence _must_ be cleared before
//calling sleep.
sleep(DEEP_SLEEP);
delay_cycles(1);
//You will get here (not reboot), when the interrupt triggers and wakes
//Ideally do something here to show you are awake
}
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Mon Sep 19, 2016 2:15 pm |
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| Quote: | | the interruption on INT0 is causing the reboot of the MCU |
That is the correct operation. Read the 18F24J11 data sheet:
| Quote: | 4.6.3 DEEP SLEEP WAKE-UP SOURCES
While in Deep Sleep mode, the device can be awakened
by a MCLR, POR, RTCC, INT0 I/O pin interrupt,
DSWDT or ULPWU event. After waking, the device performs
a POR. When the device is released from Reset,
code execution will begin at the device’s Reset vector. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19482
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| Posted: Tue Sep 20, 2016 10:20 am |
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| The obvious question is why you want to use deep-sleep?. The power consumption of the CPU in a normal full sleep mode, is tiny. The point about 'deep sleep' is effectively the CPU is taken to the state it is in when the chip hasn't yet started, with all memory cleared, clocks stopped, most peripherals stopped etc.. Almost switched 'off', but with a few things left available to trigger a wake. The power difference is tiny.... |
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