AVR-Chat

Hi folks,
Just wondering how many people have experience of using the AT90USB1287
in USB host/OTG mode.
We have come upon a little problem with a certain batch of devices from
atmel which do not work in host mode. They are revision 2, which has
been out for a few years, and Atmel are not aware of any problem, which
makes me think perhaps nobody else is actually trying to use these
devices in host mode. They work fine in device mode so you wouldn't
notice a problem.

I'd be interested to hear from anyone else who is using host mode.

-- 
Tim Mitchell

Hi All,
 
I was wondering if anyone can help me.
I am using an ISR (Int0 & Int1) of a ATMega168 with Bascom AVR.
In this ISR�s I have to handle some code but now the ISR take too much time.
This code is for translating signals of the AD2S90 � resolver to digital converter
http://www.analog.com/static/imported-files/data_sheets/AD2S90.pdf
 
I already tried to write this ISR in assembler but I cann�t get it to work ok.
(new to assembler)
 
Is there some smart person who can help me to translate the ISR into assembler?
 
Thanks,
Pascal
 
�***************************
Channel_a Alias Pind.2 �Int0
Channel_b Alias Pind.3 �Int1
 
Dim Int1_flag As Byte
Dim Pulse_count As Word
 
Int0_isr:
   If Int1_flag = 0 Then
         If Channel_a = 1 Then
            If Channel_b = 1 Then
               If Pulse_count < 65535 Then Incr Pulse_count
               Config Int1 = Falling
            Else
               If Pulse_count > 0 Then Decr Pulse_count
               Config Int1 = Rising
            End If
            Config Int0 = Falling
         Else
            If Channel_b = 0 Then
               If Pulse_count < 65535 Then Incr Pulse_count
               Config Int1 = Rising
            Else
               If Pulse_count > 0 Then Decr Pulse_count
               Config Int1 = Falling
            End If
            Config Int0 = Rising
         End If
         Int1_flag = 1
      End If
Return 
 
Int1_isr:
      If Int1_flag = 1 Then
        If Channel_b = 1 Then
            If Channel_a = 0 Then
               If Pulse_count < 65535 Then Incr Pulse_count
               Config Int0 = Rising
            Else
               If Pulse_count > 0 Then Decr Pulse_count
               Config Int0 = Falling
            End If
            Config Int1 = Falling
         Else
            If Channel_a = 1 Then
               If Pulse_count < 65535 Then Incr Pulse_count
               Config Int0 = Falling
            Else
               If Pulse_count > 0 Then Decr Pulse_count
               Config Int0 = Rising
            End If
            Config Int1 = Rising
         End If
         Int1_flag = 0
      End If
Return

 






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