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mohanade
Joined: 13 Sep 2008
Posts: 3
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| PC-> PIC using rs232 |
 Posted: Sun Sep 14, 2008 11:54 am |
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I am trying to send numbers (i.e. 44,55,66, etc) from a PC to be stored inside a 16F877A microcontroller .
The numbers are being sent using serial rs232 communication.
The microcontroller receives the information in the for of a string.
From the PC side, what's the form of the printf function that to be sent (printf("%d\n", 44); )?
On the Microcontroller side, How do i receive the number in the serial format and store it as an integer in a byte?.. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sun Sep 14, 2008 4:27 pm |
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Look at the input.c file. It has various functions to get numbers from a
PC (in the form of an ASCII string -- terminated with a carriage return)
and convert them into int, long, float variables. Here's the file location:
| Quote: | | c:\Program Files\PICC\Drivers\input.c |
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arunb
Joined: 08 Sep 2003
Posts: 492
Location: India
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| RE: |
| Posted: Sun Sep 14, 2008 9:41 pm |
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Use putc() instead of printf(), it uses less overheads than printf()
thanks
arunb |
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MarcosAmbrose
Joined: 25 Sep 2006
Posts: 38
Location: Adelaide, Australia
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| Re: PC-> PIC using rs232 |
| Posted: Tue Sep 16, 2008 4:59 pm |
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| mohanade wrote: |
From the PC side, what's the form of the printf function that to be sent (printf("%d\n", 44); )?
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From the PC side, this really depends on what programming enviroment you're using. If you're creating a console (DOS type) application then just use Putc(). However, if you're working in a Windows/Visual/.Net enviroment, it's easier to use the Serial Port Controller/Class to send/receive data.
-Cheers |
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viraj
Guest
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| beginer |
| Posted: Tue Sep 16, 2008 11:27 pm |
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| I am trying to transfer data using PIC18F4620 through an ethernet cable. can any one tell me the algorithm to go abt ith it |
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