Serial Communication Interrupt in PIC Basic Pro

[TheMaccabee]

Hello
Im buliding a robot which has an option to be controlled from the PC to which it is serially connected.
My Aim is like this
The robo should follw a default routine normally, but whenever a interrupt is send from the PC..It should jump to another subroutine which gives the control to the PC user..
Im using PIC Basic Pro v 2.46 and PIC16F877A .
Can any one tell me how to implement this "Interrupt from PC Jump to another sub routine""part using PIC basic or thru anyother means?????

 

[gramo]

Interfacing with your PC is very easy with Basic, download Microsoft Visual Basic Express (Free download) and grab a DS275 (a single chip RS232 - TTL)

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To make your DB9 connector proto-PCB friendly, cut off the unrequired Pins, eg

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And either buy, or build your DB9 lead;
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The connector shown above is a solderless clamp type, very easy to use.

Then you will have to learn the basics of setting up your COM port, and how to send data either way.

**broken link removed** may help you to do that, included are the Visual Basic files, and the Proton PIC Basic file.

 

[Sceadwian]

It never dawned on me that the entire bottom row isn't needed for basic serial transmission. I didn't realize until I tried to look it up either that there is no such thing as a DB-9 connector =) Apparently it's DB-25 The 9 pin version is DE-9 not DB-9

 

[gramo]

I thought they were all called DBxx?

If you google "db9 connector" - 812,000 hits
"de9 connector" 13000 hits.

Although I did find this;

DB-9 is a common misnomer for the DE-9. (A true DB-9 connector would have 9 pins in a connector the shape and size of a DB-25, the other 16 pins would just be missing.)

 

[Sceadwian]

Just goes to show you what 'convention' can do =) More than 3/4's of a million more hits on google for an incorrect term => I think I have actually seens a DB-9 (as you described it) though.

 

[blueroomelectronics]

It is a DE-9 almost always thought of as a DB-9 though
https://en.wikipedia.org/wiki/DE-9_connector