RS232gui problem...

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Joined: Thu Nov 04, 2010 7:47 am

RS232gui problem...

Post by Lola » Thu Nov 04, 2010 7:53 am

Dear Lubin,

I will be using the blockset as part of my graduation project so I was testing the different functions of the microchip dspic 30f 4013 before starting. The TX block however is the only block that hasn't functioned properly. I am using a simple program using an ADC input and a TX as the output, the pin does generate a signal ( shown on an scilloscope) but the graph is not appearing on Matlab, and the bytes in the rs232gui show wither \ or / or - . I have attached my program, please let me know what I have done wrong.

Thank you :)
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Re: RS232gui problem...

Post by LubinKerhuel » Thu Nov 04, 2010 2:33 pm

It should works : low % error on the transmission speed.

you can check the following points :
- Is the dsPIC running at 2.5 MIPS (make a output pin to toggle at a defined freuqency and check that you get this frequency with your scope).
- Are you oppening the correct port COM . check with hyper terminal, (or real term that is a free hyperterminal quite good). Try to short circuit Rx and Tx pin of the computer and to see that the computer is receiving char sent through the keyboard.

What type of interface converter are you using for connecting the chip to the PC ?

I could not help more on this as I see no real reasons.

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