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Hmm getting usb catching commands

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ELCouz

Joined: 18 Jul 2007
Posts: 427
Location: Montreal,Quebec

Hmm getting usb catching commands

Posted: Wed Sep 19, 2007 9:40 pm

Hi,

I know that this subject has been discuted alot of times but seriously i tryed doing something more simpler to simply catch a caracter to execute a (in this case) test command.

Code:

#include <18F2550.h>
#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL3,CPUDIV1,VREGEN
#use delay(clock=48000000)
#include <usb_cdc.h>
#use standard_io(A)

BYTE commandstr[5];
BYTE i;

void main(void) {

usb_cdc_init();
usb_init();

while (TRUE) {
usb_task();

if (usb_cdc_kbhit()) {
for(i=0;i<5;++i){
commandstr[i]=usb_cdc_getc();
}
if (commandstr[0]== '1'){
output_high(PIN_A1);
}
if (commandstr[0]== '0'){
output_low(PIN_A1);
}
}
}
}

PuTTY freeze on login (COM4)
Tryed the echo loopback code, worked #1

i'm using the pic18f2550 via USB with a 12MHZ quartz.

PS: commandstr is a 6 caracters array so i can use longer command in the next time

Thank you,

have a nice day Smile

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