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PicKit 2 Uart tool

 
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hisham.i



Joined: 22 Aug 2010
Posts: 43

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PicKit 2 Uart tool
PostPosted: Sun Apr 24, 2011 11:53 am     Reply with quote
Hello..maybe i should not ask this question in this forum but i asked in microchip forum and got no answer until now.

I am using PicKit 2 for programing my dspic30f4012, and the programing goes fine.
But when i used it for uart tool, i connected :
pin 2 to 5v
pin 3 to 0v
pin 4 to transmit pin on my dspic
pin 5 to receive pin on my dspic.

then i wrote a small program which is:
Code:

#include <30f4012.h>
#device *=16 //16 bits pointer
#fuses XT_PLL8,NOWDT,NOPUT
#device ADC=10
#use delay(clock=10MHZ)
#use rs232(baud = 9600 , xmit = PIN_C13 , rcv = PIN_C14)

#bit ALTIO = 0x020c.10
void main()
{
char a;
ALTIO = 1; //Selecting the alternate I/O for UART

while(1)
{
a=getc();
putc(a);
}
}

I got the received character different from the sent one.

But when i disconnect the 3rd pin in the picKit 2 from 0V, and tested the program with uart tool everything goes fine.

Why this happened?
hisham.i



Joined: 22 Aug 2010
Posts: 43

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PostPosted: Mon Apr 25, 2011 5:31 am     Reply with quote
I solved this issue, i have a problem in the configuration of the clock
am using 10 MHZ crystal and pll*8, so 80 mHZ

but i wrote #use delay(clock = 10MHZ)
when i replaced it by : #use delay(clock = 80MHZ) it works correctly
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