need low cost USB host controller

[vishu489]

Hello friends,

I want to add USB host controller functionality in my atmega8l by using external interfacing chip. Currently i'm going through VNC1L and MAX 3921E solution, they are suitable for my criteria but they are superb costly. I want something cheaper with the same functionality as above chip.

Can you guys help me out?:smile:

Thanks in advance

 

[barry]

Look at FTDI https://www.ftdichip.com/

 

[nandhu015]

You can also search micros with USB OTG .... For example PIC24Fxx

 

[vishu489]

Thanks for your reply.

I want to know whether texas instrument offered such kind of solution or not?

 

[barry]

Why don't you look at the Texas Instrument website?

 

[arbj2]

You can also search micros with USB OTG .... For example PIC24Fxx

But does the PIC24XX have to be programmed for connecting to pen drives, wireless dongles etc ??

So for each device the drivers also have to be programmed into the PIC 24XX ??

thanks
a

 

[doraemon]

Hello!

Texas Instruments: TUSB3410

Dora.

 

[arbj2]

Hello!

Texas Instruments: TUSB3410

Dora.

but this is for a usb-serial port controller, are you sure it will work for pen drives and other USB devices ??

 

[vishu489]

no it will not work for pen drive . it is just USB to USRT bridge . it doesnt have USB host functionality to communicate with USB HID devices.

 

[doraemon]

Hello!

Yes, you're right. On the other hand, Texas have a myriad of microcontrollers with internal USB,
which are even cheaper that the TUSB3410. And these work fine for HID devices.

Dora.

 

[vishu489]

Decided to go with VNC2-32L. It is superb chip as compare to VNC1L. 3$ for 1000 units.

I want to develop UART to USB HOST bridge which will read and write data to USB HID device connected at USB host port. at the UART side there will be my controller atmega8l.

But i have some doubt

1. I do not want to use flow controller. just want to use rx and tx line at the controller side. Is it possible to turn off the flow control of vnc2l?

2. FTDI provide precompiled rom file for the same thing but it can only receive data from USB hid device. How can i write data to USB Hid device? I mean i need source code guidance to write data to my USB hid device from controller.

Thanks in advance:-D

 

[doraemon]

Hello!

If you are targeting low cost design, I think you should use a 1-chip solution. Texas has some,
probably other makers do also have HID capable devices.
Just for your info, you can get a HID capable TI MCU at 1.6 USD @ 1000 units. NB: I'm talking
of TI because it's the maker I know best, I have their compiler, etc. But I'm sure other makers
do have the same kind of products at approximately the same price. You can probably do your
design with a single chip. By the way, there is some source code for HID applications.
I have never used it. I used only mass-storage and I made a device which shows up on the desktop
as a mass storage device although it is a plain measurement device.

Dora.

 

[vishu489]

Hello friends,

have purchased V2DIP1 module and loaded V2DAP firmware via UART interface.

But i'm facing the connection problem with keyboard and mouse also. When I enquired the USB device via PC (UART interface is connected to PC by using FT232 USB module)
get the response like this

QP1#CR
#NUL#NUL#CR
D:\>#CR

which means that USB device is not connected.

Then i changed firmware and upgraded the device with USBHIDkbd.rom(ftdi demo firmware) then also I'm facing the same problem. It only gives output "waiting for enumeration" even if i connected device. Enumeration process never completed.

Also reported the problem to FTDI but not received any response.

If you guys have any kind solution then it would be very helpful for me.

Thanks in advance.