That pic is new to me but it looks like you may also need to check the configuration word 1 bit 6.
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
That pic is new to me but it looks like you may also need to check the configuration word 1 bit 6.
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
Are you using an external pullup resistor for your switch configuration?
"No one is completely worthless. They can always serve as a bad example."
Anonymous
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
Originally Posted by rsocor01
no...if i'm reading the datasheet correctly, it is possible to use a weak pullup for that pin, which is what i've done...
Code:OPTION_REG.7 = 0 WPUA = %00011000 IOCAN = %00011000
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
Hmmm, try using an external resistor (maybe 4.7K Ohms) and see if you have the same problem. You might be drawing too much current when closing the switch and that might be causing the problem.
"No one is completely worthless. They can always serve as a bad example."
Anonymous
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
just tried an external pullup resistor on RA3 (vs internal weak pullup)- same results.....if I ground RA3 (MCLR pin), the PIC resets
...aaaaaaarrrrgggHHHH
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
Before programming your PIC, you've checked the configuration bits in your device programmer software and they match your code right?
Are you sure your programmer do it right?
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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Re: 16f1824 MCLR pin going low causes PIC to reset - what am I missing?
If it helps, I'm using a Pickit2 programmer ...whilst I've been away from all of this for a while, I don't recall having to do anything special previously wrt the programmer when using RA3 as a digital input (albeit probably using a different chip).
Just moved the Sitch off RA3...to another input pin, device is not resetting now whe the switch is pressed, so it is definitely related to when RA3 goes low, the 16f1824 is resetting!
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