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Forum Index : Microcontroller and PC projects : Interupts with Ver 4.5
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OA47 Guru  Joined: 11/04/2012 Location: AustraliaPosts: 982 |
I have noticed that if I set an interupt using SETPIN pin,INTL,Iroutine then other interupts such as SETTICK period,TARGET,2 will not function. Has this been covered or is this documented somewhere that I may have missed? |
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TassyJim Guru Joined: 07/08/2011 Location: AustraliaPosts: 6220 |
Micromite or Maximite? And code which shows the error. Jim VK7JH MMedit |
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| OA47 Guru Joined: 11/04/2012 Location: AustraliaPosts: 982 |
I am finding the issue with a colour maximite and there is no error reported the settick just does not happen. |
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Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3269 |
You can have multiple interrupts running. Can you post a short segment of code that demonstrates your problem? Geoff Geoff Graham - http://geoffg.net |
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| OA47 Guru Joined: 11/04/2012 Location: AustraliaPosts: 982 |
Welcome back to winter Geoff and thanks for your reply. Here is hopefully enough code to demonstrate: Dim ANALOG(20)
Dim DOW$(6) LENGTH 9 Dim SDDATA(10,10) Dim KCTWORD(2048) Dim MESSAGE(16) SetPin 1,AIN 'ANALOG IN SetPin 2,AIN 'ANALOG IN SetPin 3,AIN 'ANALOG IN SetPin 4,AIN 'ANALOG IN SetPin 5,AIN 'ANALOG IN SetPin 6,AIN 'ANALOG IN SetPin 7,AIN 'ANALOG IN SetPin 8,AIN 'RADIO AUDIO OUT (DB9/9) SetPin 9,DOUT 'RADIO PTT(DB9/3) SetPin 10,INTL,HAVECD 'RADIO CD (DB9/6) SetPin 11,FIN ' SetPin 12,PWM 'RADIO MIC IN (DB9/7) : : SetPin 40,DIN 'AIN,DIN,DOUT SetTick 2001,BLINKLED,2 : HAVECD: ' CD DETECTED GOING LOW NEED TO ANALYSE VF DATA CD=1 CDDETECT=CDDETECT+1 VFARRAY 'FILL ARRAY WITH INCOMING DATA SAMPLE GETWORD 'RETURN WITH VFDATA$ SINGLE CHARACTER BUILDPCKT 'ASSEMBLE EACH CHARACTER TO FORM WORD IReturn : : BLINKLED: 'FLASH LED & UPDATE TIME If CD=0 Then Pin(0)=1 Pause 20 Pin(0)=0 Print @(420,0)Time$ EndIf IReturn The program calls the HAVECD routine but ignores the ongoing SetTick to BLINKLED. I have got around the issue here by looking at Pin 10 in a loop and calling HAVECD when it goes low. |
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BobD Guru Joined: 07/12/2011 Location: AustraliaPosts: 935 |
Grame Once you take the interrupt to HAVECD then all other interrupts are locked out until you process the IRETURN. Are you loitering in VFARRAY, GETWORD, or BUILDPCKT? Bob |
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| OA47 Guru Joined: 11/04/2012 Location: AustraliaPosts: 982 |
Bob Thanks for your input. The program was dealing with the HAVECD and finishing the job, but during idle time (up to 2 hours) it wasn't flashing the LED 
As I mentioned the workaround does let the BLINKLED routine happen. |
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| Geoffg Guru Joined: 06/06/2011 Location: AustraliaPosts: 3269 |
Graeme, We need a short segment of code that works. The problem with your post is that it will not run and is therefore impossible to diagnose and test. Try this, I bet that it will work: SetPin 10, INTL, HAVECD
SetTick 2001, BLINKLED, 2 Do : Loop HAVECD: Print "Have CD" IReturn BLINKLED: Print "Blink" IReturn Geoff Geoff Graham - http://geoffg.net |
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| BobD Guru Joined: 07/12/2011 Location: AustraliaPosts: 935 |
Graeme I notice you are using colons : to make blank lines. It's probably harmless but it's also probably not beneficial. You may be better to leave blank lines or a single quote '. As for your other problem. You need to get in and out of that interrupt routine as quick as possible. My suggestion is to remove all of those routines from the ISR and just set a flag in the ISR to indicate that it has been called. Then, in your main loop, use that flag to conditionally call your VFARRAY, GETWORD, and BUILDPCKT. When you have finished then clear that flag. I can't offer you more than that as you haven't shown much of what you are doing. Have you read the bottom of page 7 in the Maximite Manual or the bottom of page 26 in the MicroMite Manual? There is an explanation of interrupts. |
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| OA47 Guru Joined: 11/04/2012 Location: AustraliaPosts: 982 |
Bob, I used the colons in the posted example to indicate that there were other subs etc between the posted code. |
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| OA47 Guru Joined: 11/04/2012 Location: AustraliaPosts: 982 |
I am afraid that it one of those situations where the hardware controls the software and it is unfortunate that I can't post code that could be tested by others. I will have to concede that the cause of the problem will be an error on my coding although I have not been able to locate and correct it. The work around will have to suffice for now ( testing for the CD signal within a loop). Thankyou for the support GM |
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| crez Senior Member  Joined: 24/10/2012 Location: AustraliaPosts: 152 |
I have had a similar problem in the following code reading a rotary encoder: Initialised..... SETPIN 2, INTH, RInt Interrupt routine........ RInt: IF PIN(RB)=1 THEN 'Clockwise rotation Value=Value+1 ELSE 'Anti-Clockwise rotation Value=Value-1 ENDIF IRETURN I can watch the rising edges on pin 2 using a digital 'scope but about every 1 in 10 does not cause an interrupt. There are no other interrupts active. The code is basically that posted by G8GCF for controlling the AD9850 DDS chip. It appears that rising edges are being ignored but there maybe something else happening that I will find when I investigate a bit more. David |
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