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| Author |
Message |
Markdem
Joined: 24 Jun 2005
Posts: 206
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| CCS CDC ehco problem |
 Posted: Fri Sep 01, 2006 10:26 pm |
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Hello, all. I have got one of my devices working with the CDC driver. The problem in that when i type somthing onto hyperterminal, the pic will ehco each keystoke back. This is not the local echo option because if i enable that option in hyperterminal, i will get two sets of echo eg 220000 when i type 200.
Can anyone help me here??
Thanks, Mark
| Code: |
include <18F4550.h>
#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN,NOBROWNOUT
#use delay(clock=48000000)
#define USB_CON_SENSE_PIN PIN_A3
#include <usb_cdc.h>
int USB_req;
void main(void)
{
usb_init();
while (TRUE)
{
if (usb_cdc_kbhit())
{
USB_req = get_int_usb();
if (USB_req == 201)
{
printf(usb_cdc_putc,"ok\n");
}
else
{
printf(usb_cdc_putc,"200\n");
}
}
}
}
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Sep 01, 2006 11:24 pm |
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Find the function get_int_usb() shown in bold below, inside the
usb_cdc.h file. Look at its code. It calls the get_string_usb() function.
What lines of code in get_string_usb() could cause your problem ?
| Quote: |
if (usb_cdc_kbhit())
{
USB_req = get_int_usb();
if (USB_req == 201)
{
printf(usb_cdc_putc,"ok\n");
}
else
{
printf(usb_cdc_putc,"200\n");
}
}
} |
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Markdem
Joined: 24 Jun 2005
Posts: 206
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| Posted: Sat Sep 02, 2006 12:56 am |
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Thank you PCM, i dont know how i missed that.
Thanks, Mark |
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