Databases
StackOverflow2013
Postsdbo
POAndroid HID USB how to send hexadeсimal data with bulkTransfer or controlTransfer?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAndroid HID USB how to send hexadeсimal data with bulkTransfer or controlTransfer?
    primarykey
    data
    text
    <p>I'm trying to send hexadecimal data to connected USB HID device from my Nexus 7, but Android SDK method can work only with byte[] buffer.</p> <p>How can I send hexadeсimal data that originates as decimal String values with bulkTransfer or controlTransfer?</p> <pre><code>message[0]= 0; message[1]= 166; message[2]= 2; message[3]= 252; message[4]= 255; </code></pre> <p>SDK Methods:</p> <pre><code>bulkTransfer(UsbEndpoint endpoint, byte[] buffer, int length, int timeout) controlTransfer(int requestType, int request, int value, int index, byte[] buffer, int length, int timeout) </code></pre> <p>like this: <a href="http://pure-basic.narod.ru/article/pickit2.html" rel="nofollow">http://pure-basic.narod.ru/article/pickit2.html</a>, PC application with the device works good.</p> <pre><code>OutBuffer(0)=0 OutBuffer(1)=$A6 ; EXECUTE_SCRIPT OutBuffer(2)=2 OutBuffer(3)=$FC ; _VDD_GND_OFF OutBuffer(4)=$FF ; _VDD_ON </code></pre> <p><strong>UPDATE - ANSWER</strong></p> <pre><code>private void sendData() { //byte b = (byte) 129; // (byte) 0x81 Also work int status = connection.bulkTransfer(endPointWrite, toByte(129), 1, 250); } private static byte toByte(int c) { return (byte) (c &lt;= 0x7f ? c : ((c % 0x80) - 0x80)); } // for received data from USB HID device private static int toInt(byte b) { return (int) b &amp; 0xFF; } </code></pre> <p><strong><a href="http://play.google.com/store/apps/details?id=com.appspot.usbhidterminal" rel="nofollow">My application on Google play - USB HID TERMINAL</a></strong></p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. US452
    1. US452
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAndroid HID USB how to send hexadeсimal data with bulkTransfer or controlTransfer?
      1. US452
      1. VTFavorite
    2. VO
      singulars
      1. POAndroid HID USB how to send hexadeсimal data with bulkTransfer or controlTransfer?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POAndroid HID USB how to send hexadeсimal data with bulkTransfer or controlTransfer?
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload