Thanks filip for your response. I changed usb cable...also I compared user app USBdsc.c and Bootloader USBdsc.c both files have some differences... Like: user app USBdsc.c has USB_SELF_POWER = 0xC0 whereas Bootloader USBdsc.c has USB_SELF_POWER = 0x80 and user app USBdsc.c has USB_INTERRUPT = 1; whe...

Hello filip, i had turned on usb voltage regulator... Today the bootloader is not working again. can it be usb cable fault? when i plug usb cable it fluctuates (or power low and normal) during plugin...then i pull out usb cable little bit from usb socket for stabilizing voltage. i can see voltage fl...

thank you filip for response.

Hello filip,
now i saw, There is USB Voltage ragulator option is disable in user app configuration whereas that option is enable in bootloader configuration...is that a problem?

Thanks paulfjujo for your help and time. Problem solved!

paulfjujo wrote:hello,


maybe you need to reverse the bytes order

Intel or motorola format ?

filip wrote:Hi,

I believe you have raised similar question on the other topic, so we will continue there.

Regards,
Filip.

ok by the way i uploaded hid bootloader project zip did you check it?

Thanks paulfjujo for your response. it is not working also. could you suggest another solution? hello, see built_in.h maybe this is working ( not tested) writebuff[14] = lo(counter); writebuff[15] = hi(counter); writebuff[16] = higher(counter); writebuff[17] = highest(counter);

Hello Everyone, I want to know how do i write 32 bit value to hid buffer here is my hid descriptor. 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x04, // USAGE (Joystick) 0xa1, 0x01, // COLLECTION (Application) 0x09, 0x01, // USAGE (Pointer) 0xa1, 0x00, // COLLECTION (Physical) 0x05, 0x01, // U...

Thank you filip for your response. i attached bootloader project included hex file.

filip wrote:Hi,

Which HEX file did you upload ? Can you attach it here ?
Did something happened during the upload which could lead to this ?

Regards,
Filip.

nothing happened during upload.

Hello everyone, I'm using pic18f4550 with 20mhz external crystal and internal mcu frequency is 48mhz. one week ago i flashed hid boot-loader into pic. today when i connected my device, it's boot-loader not working. i dont know why? I flashed boot-loader again it's working now. the problem had also o...

Hello everyone,

Please guide me. Can i use same VID & PID that i used in HID Bootloader, in user app?

Thanks

Hello everyone,
I'm using 20mhz external crystal with pic18f4550. I want to flash hid bootloader. below is my bootloader configuration is it correct? and also want to know that should hid bootloader configuration be same as application configuration?

here is the shift register's cascading code hexreader....the above code i'm using, was written for different pic, i converted that code for 18f4550. also i want to confirm that am i latching correct for multiple shift register? // SR74HC595 is a structure that has data for multiple registers void Sh...

Thanks all for response. here are schematic and code. //Configure i/o ports where display is connected //below is segment data port #define SEVENSEG_TRIS TRISD #define SEVENSEG_PORT PORTD //below is disp select data port #define SEVENSEG_CMN_TRIS TRISB #define SEVENSEG_CMN_PORT PORTB unsigned char d...

I think the issue is that SPI write causes SPI read simultaneously. I suspect that the solution might end up with combining read and write in one function. also i'm thinking the same. now the code is working on real hardware. but still proteus gives that warning that i mentioned in first post. I'm ...