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I'm talking about the GIE bit here. In the A version, if GIE is not set, the SLEEP (the Assembler instruction) is treated as a NOP and the PIC never enters SLEEP. This didn't work that way in the non-A version. I've a (fortunately) obsolete product that used that feature... otherwise I'd be scratching my head trying to figure why the product didn't work as expected!
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The interrupt Way
Hi, Charudatt
Here it is :
@ __CONFIG _INTOSC_OSC_NOCLKOUT & _WDT_OFF & _LVP_OFF & _PWRTE_OFF & _CP_OFF & _BODEN_OFF
DEFINE NO_CLRWDT 1
DEFINE INTHAND _Blink
CMCON=7
VRCON=%01101100 'VRCON bit7 is OFF for no current drain
OPTION_REG.7 = 0 ' ENABLE INTERNAL PULLUPS
Porta = 0
PORTB = %11110001
Trisa = %11110011
Trisb = %11111111
LED VAR PORTA.2
SleepLed var PORTA.3
Dummy var byte
'
' PIC Low-Power Sleep Routine
' ---------------------------
'
' Set Sleep Interrupts
' --------------------
INTCON=%10011000 ' Interrupt Control Register
' 7=0 - GIE - Global Interrupt Enable
' 6=0 - PEIE - Peripheral Interrupt Enable
' 5=0 - TOIE - TMR0 Overflow Interrupt Enable
' 4=1 - INTE - RB0/INT Enable
' 3=1 - RBIE - PORTB change interrupt Enable
' 2=0 - TOIF - TMR0 Overflow Flag
' 1-0 - INTF - RB0/Ext Interrupt Flag
' 0=0 - RBIF - PORTB Interrupt Flag
OPTION_REG.6 = 0 ' 1=RB0 Rising-Edge Trigger, 0=Falling-Edge Trigger
CYCLE:
'
' Reset Interrupt Flags
' ---------------------
INTCON.1 = 0 ' Reset RB0 Flag
INTCON.0 = 0 ' Reset PORTB change Flag
INTCON.7 = 1
'
' Sleep
' -----
LOW LED
High Sleepled
@ SLEEP
@ nop
Blink:
Dummy = PORTB
Pause 100 ' Needed for system Wake-Up
LOW SleepLed
HIGH LED
While ( PORTB >> 4 ) <> %00001111
Wend
PAUSE 200
PAUSE 5000
LOW LED
GOTO CYCLE
END
As you see it's not so different from the "non interrupted" way ...
But, IF I correctly understand Mel ( one more time, Mel : You're the one and Only ... !!! - no sexual meanings hidden ( LOL) ) , the interrupt way could fit both 628 and 628A ...
I must say I used a 16F628-04 batch N° 0145H9F for tests ( I do not have any 628A ... but will run a try with a brand new 648A.
********************************************
********************************************
A little "bug" in the "non interrupted" listing ... to correct:
TRISB must be % 11111111 ... instead of % 01111111
I was wondering why PortB.7 was inactive .... LOL !!!
Have fun, and read you soon
regards
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
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Humour ...
Those who really followed this thread have surely noticed there could have been other lines inserted between :
@ SLEEP
@ nop
AND ...
Blink:
didn't you ??? ....
Alain
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
|
How about this
Hello Alain,Originally Posted by Acetronics
Do you mean:
@ SLEEP
@ nop
snore
Blink:
turn-over
@ SLEEP
Then again, sometimes I "just don’t quite get it"...
-Adam-
Ohm it's not just a good idea... it's the LAW !
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Gotta get new glasses.
@nap
Did not work
Dave
Always wear safety glasses while programming.
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<body onload="setInterval('blinkIt()',1000)">
<script type="text/javascript">
function blinkIt() {
if (!document.all) return;
else {
for(i=0;i<document.all.tags('blink').length;i++){
s=document.all.tags('blink')[i];
s.style.visibility=(s.style.visibility=='visible') ?'hidden':'visible';
}
}
}
</script>
<blink>@ NOP</blink>
@nap will just define a label
nap without the @, is a PBP function, and it's not the same as ASM
<blink>@ NOP</blink>
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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A half hearted compile of your code (Alian) for the 16F873A gave an error with DEFINE INTHAND _Blink.
I changed it to DEFINE INTHAND Blink and it did not come out of sleep (I presume) the same code compiles OK for the 16F628A.
I am sorry , I was busy with some other job, but today I shall try your code for the intended chip and post results.
Thank you for all your help,
regards
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C'mon Mister_e, you can do better than that! - show us all some of your "real" java skills, like scrolling some 3D text with user definable parameters.<body onload="setInterval('blinkIt()',1000)">
<script type="text/javascript">
function blinkIt() {
if (!document.all) return;
else {
for(i=0;i<document.all.tags('blink').length;i++){
s=document.all.tags('blink')[i];
s.style.visibility=(s.style.visibility=='visible') ?'hidden':'visible';
}
}
}
</script>
<blink>@ NOP</blink>
@nap will just define a label
nap without the @, is a PBP function, and it's not the same as ASM
<blink>@ NOP</blink>
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Hi, Adam
Snore never happens ... might be a LABEL to call before !!!
Alain
Last edited by Acetronics2; - 15th May 2007 at 09:55.
************************************************** ***********************
Why insist on using 32 Bits when you're not even able to deal with the first 8 ones ??? ehhhhhh ...
************************************************** ***********************
IF there is the word "Problem" in your question ...
certainly the answer is " RTFM " or " RTFDataSheet " !!!
*****************************************
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