[PIC] PIC18F4550 USB communication

[chandresha1]

I m building DAQ board by using PIC18F4550 which wil display data on Labview. I have some doubts regarding to USB communication.

1.As of now i am using MicroC compiler which has inbuild HID descriptor file generator. So my question is HID is sufficient for Data acquisition as the speed of HID is low and i cant use it for bulk transfer.

2. If i have to use bulk transfer than which compiler i should use? Because in MicroC compiler i didnt find any library for Bulk transfer.

 

[jpsganesh]

I'm also working with the same controller but my application is for data logging. I'm in initial stage. If any one know about bulk/high speed data transfer in mikroC pls letus know.

 

[horace1]

HID is limited to 64Kbytes/sec but it also depends on the number of USB read/write per second and what the host PC is doing, e.g. I would expect 500 to 800transfers of 64byte blocks which is fine for a fairly low speed data acquisition and control system.
For higher speed I use PIC32s or similar with 100Mbit/sec ethernet

 

[embpic]

i think for DAQ system that much speed is sufficient. what is your requirement??