Mplab 7.10 ???? - Page 2 - Electronic Circuits Projects Diagrams Free

Kryten · 6th May 2008, 08:28 AM

That wont help. Mplab somethimes has only USB option for ICD2 in settings-> com. I have tried everything i can think of but nothing seems to help (yeh i have just reinstalled Mplab 8.10)

**Nigel Goodwin** · 6th May 2008, 08:50 AM

Quote:

Originally Posted by Kryten

That wont help. Mplab somethimes has only USB option for ICD2 in settings-> com. I have tried everything i can think of but nothing seems to help (yeh i have just reinstalled Mplab 8.10)

That's because you don't have any COM ports, reassign it to COM1 and reboot the computer, then check COM1 exists in control panel.

Kryten · 6th May 2008, 08:52 AM

well i have don it but will try again (as it is part of my final project to become an electronics enginner)

**3v0** · 6th May 2008, 10:16 AM

Quote:

Originally Posted by Kryten

So little update from me.

Mplab cant "see" my rs232 serial usb adaptor (strange) so it cant open the correct port (com1)

Anyone got any ide what i can do?

What do you see in the device manager under
Ports(COM & LPT)?

Kryten · 6th May 2008, 11:53 AM

I see
Prolific USB-to-Serial Comm Port (com1)

And when i try to connect now i get just:
ICD0021: Unable to connect with MPLAB ICD 2
MPLAB ICD 2 Ready

So i guess i need to use Bill's BL and try to see if it helps

Edit:

It also helps connecting the D-sub9 the correct way

**3v0** · 6th May 2008, 12:06 PM

Given that this has gone away

Quote:

ICDWarn0027: The selected baud rate is not supported by your system. Chances are it will work anyway, but if persistent communications occur, consider switching to a lower baud rate.
ICD0019: Communications: Failed to open port: (Windows::GetLastError() = 0x2, 'Systemet finner ikke angitt fil.

It seems you are making progress.

Before you reprogram the chip see if you can get MPLAB to reprogram it. Under debugger or programer in the main menu "Download New OS" or similar.

blueroomelectronics · 6th May 2008, 12:22 PM

The PL2303 is common but can be tough to get running with the ICD2. Try different drivers (I have one in my downloads section that may work)

Kryten · 6th May 2008, 12:37 PM

Quote:

Originally Posted by blueroomelectronics

The PL2303 is common but can be tough to get running with the ICD2. Try different drivers (I have one in my downloads section that may work)

I will try that.
I have just spent some time checking that everything is wiredup correctly and it is according to the schematics that Lothar Stoltz has made... Im using a MAX232A with 0.1uF caps...

It looks like crap but it should work (based on the schematics)

Kryten · 7th May 2008, 07:25 AM

Does anyone know wehter its possibel to check ansd see if my MAX232A is faulty?

I dont have acesse to a scope only a DMM

Pommie · 7th May 2008, 08:02 AM

If you remove your 876A and short pins 17 & 18 of the socket, you should be able to run hyperterminal and see what you type in the window. Make sure you select the right com port and set flow control to "none". If you can see what you type then you max232 is working fine.

Mike.

ericgibbs · 7th May 2008, 08:04 AM

Quote:

Originally Posted by Kryten

Does anyone know wehter its possibel to check ansd see if my MAX232A is faulty?

I dont have acesse to a scope only a DMM

hi Kryten,
Look at this jpg.

I have indicated the states on the drawing.

On the loop back test link [bottom of MAX] the two states are shown one above the other.

Disconnect from thePIC while testing.!

Any questions, ask..

Kryten · 7th May 2008, 09:59 AM

Hmm i think i must test both versions today (need only a hyperterminal cous there isnt one i Vista

)

ericgibbs · 7th May 2008, 10:11 AM

Quote:

Originally Posted by Kryten

Hmm i think i must test both versions today (need only a hyperterminal cous there isnt one i Vista

)

hi,
Look here:

http://www.bb-elec.com/tech_articles...2_loopback.asp

Kryten · 7th May 2008, 11:38 AM

have a look at the first page here and see that i have been there in order to test my USB-to-series-adaptor.

But i vill try it again (maybe only the software to check the max232)
And i found a HyperTerminal for download.. so i think it will work..

blueroomelectronics · 7th May 2008, 02:39 PM

A loopback test will only check the connections, the timing or latency is not checked. USB to RS232 is only an emulation and as such may not be 100%
In my experience only one USB to RS232 adapter works perfectly and that's the expensive Digi (I/O networks) ones.

6th May 2008, 08:28 AM	(permalink)
Kryten Experienced Member	That wont help. Mplab somethimes has only USB option for ICD2 in settings-> com. I have tried everything i can think of but nothing seems to help (yeh i have just reinstalled Mplab 8.10) __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist?

6th May 2008, 08:52 AM	(permalink)
Kryten Experienced Member	well i have don it but will try again (as it is part of my final project to become an electronics enginner) __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist?

6th May 2008, 11:53 AM	(permalink)
Kryten Experienced Member	I see Prolific USB-to-Serial Comm Port (com1) And when i try to connect now i get just: ICD0021: Unable to connect with MPLAB ICD 2 MPLAB ICD 2 Ready So i guess i need to use Bill's BL and try to see if it helps Edit: It also helps connecting the D-sub9 the correct way __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist? Last edited by Kryten; 6th May 2008 at 12:12 PM.

6th May 2008, 12:22 PM	(permalink)
blueroomelectronics Experienced Member Blog Entries: 4	The PL2303 is common but can be tough to get running with the ICD2. Try different drivers (I have one in my downloads section that may work) __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

7th May 2008, 07:25 AM	(permalink)
Kryten Experienced Member	Does anyone know wehter its possibel to check ansd see if my MAX232A is faulty? I dont have acesse to a scope only a DMM __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist?

7th May 2008, 08:02 AM	(permalink)
Pommie Experienced Member	If you remove your 876A and short pins 17 & 18 of the socket, you should be able to run hyperterminal and see what you type in the window. Make sure you select the right com port and set flow control to "none". If you can see what you type then you max232 is working fine. Mike.

7th May 2008, 09:59 AM	(permalink)
Kryten Experienced Member	Hmm i think i must test both versions today (need only a hyperterminal cous there isnt one i Vista ) __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist?

7th May 2008, 11:38 AM	(permalink)
Kryten Experienced Member	have a look at the first page here and see that i have been there in order to test my USB-to-series-adaptor. But i vill try it again (maybe only the software to check the max232) And i found a HyperTerminal for download.. so i think it will work.. __________________ Simplicity rules Good enought - its perfect ?? 2 Gig of free online backup space Are you a Chemist?

7th May 2008, 02:39 PM	(permalink)
blueroomelectronics Experienced Member Blog Entries: 4	A loopback test will only check the connections, the timing or latency is not checked. USB to RS232 is only an emulation and as such may not be 100% In my experience only one USB to RS232 adapter works perfectly and that's the expensive Digi (I/O networks) ones. __________________ Bill Smart Kits build Smart People http://www.blueroomelectronics.com

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