[libhid-discuss] HID_Interrupt_write reports OK, but no action on device..

[Charles Lepple]

On Sep 1, 2009, at 5:28 AM, Neil Sutton wrote:

> On Tue, Sep 1, 2009 at 12:02 AM, Charles Lepple <clepple at ghz.cc>  
> wrote:
>
> On Aug 31, 2009, at 4:24 PM, Neil Sutton wrote:
>
> In Windows I successfully control the device using VB and issue the  
> commands to control the relays using Convert.ToByte(Int)
> The board has 4 relays and by issuing Convert.ToByte(6) for example  
> I can open a single relay, Convert.ToByte(5) closes the relay.
> (7) and (8) control another relay.. you get the idea.
>
> In that case, you probably want to send 6 and 5, or 7 and 8.
>
> > Would just sending 0x35 via libhid be the equivilent of  
> using .net's Convert.ToByte(5) ?
> > I have really confused myself with how the data should be  
> presented to libhid..

I would assume that if the argument to Convert.ToByte() is an integer  
less than 255, then the C equivalent would be that same integer. I  
think you would only use 0x35 if you were passing a string "5" to  
Convert.ToByte(). Someone who actually knows .NET can feel free to  
correct me, though.
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