Objective Development Forums 2012-03-09T17:00:17+02:00 https://forums.obdev.at/app.php/feed/topic/6425 2012-03-09T17:00:17+02:00 2012-03-09T17:00:17+02:00 https://forums.obdev.at/viewtopic.php?t=6425&p=21117#p21117 <![CDATA[Re: Custom class send multiple bytes?]]> Statistics: Posted by mrzephy — Fri Mar 09, 2012 5:00 pm

]]> 2012-02-04T22:42:35+02:00 2012-02-04T22:42:35+02:00 https://forums.obdev.at/viewtopic.php?t=6425&p=20879#p20879 <![CDATA[Custom class send multiple bytes?]]>
How would I go about sending multiple bytes PC->AVR using the custom-class example? I guess the data should probably be in usbMsgPtr, but I don't know how I can find out the length of the buffer?
And what is the purpose of the wValue and wIndex if you use a buffer also? Can I just use those for my data as well (I need more than 4 bytes though)?

This is the code from custom-class that probably has to be changed:

Code: 

}else if(rq->bRequest == CUSTOM_RQ_SET_STATUS){
        if(rq->wValue.bytes[0] & 1){    /* set LED */
            LED_PORT_OUTPUT |= _BV(LED_BIT);
        }else{                          /* clear LED */
            LED_PORT_OUTPUT &= ~_BV(LED_BIT);
        }
    }


Thanks

Statistics: Posted by mrzephy — Sat Feb 04, 2012 10:42 pm

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