USBizi100 Chipset - USB DEVICE

Archive
1

Does USBizi100 CHIPSET works like USB DEVICE of a PC ?

I want to make it a SERIAL DEVICE of my PC!

Miguel

2

Yes, all FEZ devices can be USB clients to a host - the CDC serial driver is the default.

Good info on [url]http://www.tinyclr.com/forum/1/1328/[/url] and the linked threads.

3

But works using the SDK 4.0 and MSC 2008 C# ?

The example not compile in 2008…

Looks that USB DEVICE is only for SDK 4.1…

Miguel

4

Miguel, you have to update your software. Both SDK and VS.

Look at this page for help : http://www.tinyclr.com/dl/

5

Why using VS2008 not VS2010?! You can use the free express version

6

Hi Patrick

Then not works in 4.0 and MSC 2008, ok ?

Thanks

Miguel

7

i was using 2008 because 2010 had problems in my windows. Ok, i will install in my notebook late…

Miguel

8

Now is working on 2010 :slight_smile:

Thanks

Miguel

9

In this example i am waiting for data coming from cdc when reachs 30 or timeout…

byte[] receive = new byte[30];

int qnt_recebidos = cdc.Read(receive, 0, 30);

During a the string conversion, how i inform the byte array size ?

how to convert to string to send back with cdc.Write ?

10

Help us to help you :frowning: You will get better answers if you use code tags

This is hard to read code

byte[] receive = new byte[30];

int qnt_recebidos = cdc.Read(receive, 0, 30);

This is easy to read code

byte[] receive = new byte[30];

int qnt_recebidos = cdc.Read(receive, 0, 30);

Also, the topic is about “USBizi100 Chipset - USB DEVICE” but now you are asking question on creating strings :slight_smile:

I don’t want to bug you but you are a FEZ Senior so proper posting is expected please :slight_smile: only so we can help you better.

About your question, why do you want to convert to string if you are using cdc.Write?

11

Here the code

 cdc.Write(bytes, 0, bytes.Length);
    int qnt_recebidos = cdc.Read(receive, 0, 30);

    if (!(qnt_recebidos == 0))
    {
        byte[] encrypted_bytes = xtea.Encrypt(receive, 0, receive.Length, null);
        byte[] decrypted_bytes = xtea.Decrypt(encrypted_bytes, 0, encrypted_bytes.Length, null);
        cdc.Write(decrypted_bytes, 0, decrypted_bytes.Length);
    }

The problem is if i type MIGUEL in the COMx console
Prints MIGUEL
But, if you type A
Prints AIGUEL (stay the historic of last type)

Miguel

12

Your question is on strings or on encryption!!

Also, did you clear your array after you have used it? Use Array.xxxx

13

wow,

tks, i had forgotten to clear…

Now is working nice

Thanks

14

Don’t use receive.Length, use qnt_recebidos which is the number of bytes received. This way you don’t have to clear the array and its more efficient.

 cdc.Write(bytes, 0, bytes.Length);
    int qnt_recebidos = cdc.Read(receive, 0, 30);
 
    if (!(qnt_recebidos == 0))
    {
        byte[] encrypted_bytes = xtea.Encrypt(receive, 0, qnt_recebidos, null);
        byte[] decrypted_bytes = xtea.Decrypt(encrypted_bytes, 0, encrypted_bytes.Length, null);
        cdc.Write(decrypted_bytes, 0, decrypted_bytes.Length);
    }