Objective Development Forums

if you using usb to serial you can see igorplug as example, but if you want to make usb to other you can use delphi with libusb.pas as library of usb. it has include any you need, it support whith type transfer of usb like control tranfer or other..
it's easy to use.

you can use delphi to build a user interface for your GUI to control ON/OFF LED or other
that is very simple using libusb...

all i need help..

i'm using v-usb version 20080418, how crc5 and crc16 using in usb on this firmware, because there is article say it can using if we use 16MHz of clock in crystal...
so how the usb can check the send and recive data if crc5 and crc16 is not use??

any can explaint about that?

thank's all for reply's,

i undenrstand now, but can you explain to me about uchar len in this function and uchar len in usbfunctionWrite()..??

is there any difference between these two variables ?

what the meaning about
len was 2 => [byte 0] [byte 1]...??

best regard

i need help, i has can to read data from eeprom in my pc... but i can't to write data to eeprom from my pc, i think the currentAddress variable in usbFunctionSetup() doesn't get data buffer from my pc, it just get data from it initial in usbFuctionSetup(). how to set currentAddress in usbFunctionSet...

morning all..

i'm has success make a project with v-usb, but i have a problem in host application
i'm using c sharp to build gui.

where i can found the IN endpoint and OUT endpoint hidusb (hid-data) to communication host to microcontroller (atmega16)

regard.

any one i need help about below meaning code : uchar usbFunctionRead(uchar *data, uchar len) //??????????????? *data dan len { if(len > bytesRemaining) len = bytesRemaining; eeprom_read_block(data, (uchar *)0 + currentAddress, len); currentAddress += len; bytesRemaining -= len; return len; } i'm not...

morning...
please help me..
i'm want to ask to master usb all, i don't understand what is the converted on USB to SPI or other format (e.g I2C, RS232 )...?
how the firmware v-usb convert that?

i'm not english.
i hope you are understand my language.


bestregard
ardiansyah

thank's form reply , but i'm still confius about that. i want to write and read the eeprom (AT93c465) via USB from my PC. i'm using v-usb last update, in the source i'm confused how to edit the source so i can write and read the eeprom (AT93c46) from PC via USB PORT using SPI comunication in ATMEGA1...

hey.. morning all
can you help me about that topic??
i'm using v-usb to create that project but i don't know how to use the frimware in v-usb..
i'm want to write / read eeprom via usb using SPI protocol.
please help me this my final project in my education...