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opera_cake_board_addressing.rst
================ Board Addressing ================ Each Opera Cake has a numeric address set by optional jumpers installed on header P1. The default address (without jumpers) is 0. The ``--list`` or ``-l`` option can be used to list the address(es) of one or more Opera Cakes installed on a HackRF One: .. code-block:: sh hackrf_operacake -l The address may be set to any number from 0 to 7 by installing jumpers across the A0, A1, and/or A2 pins of header P1. .. list-table:: :header-rows: 1 :widths: 1 1 1 1 * - Address - A2 Jumper - A1 Jumper - A0 Jumper * - 0 - No - No - No * - 1 - No - No - Yes * - 2 - No - Yes - No * - 3 - No - Yes - Yes * - 4 - Yes - No - No * - 5 - Yes - No - Yes * - 6 - Yes - Yes - No * - 7 - Yes - Yes - Yes When configuring an Opera Cake, the address may be specified with the ``--address`` or ``-o`` option: .. code-block:: sh hackrf_operacake -o 1 -a A1 -b B2 If the address is unspecified, 0 is assumed. It is only necessary to specify the address if the address has been changed with the addition of jumpers, typically required only if multiple Opera Cakes are stacked onto a single HackRF One.
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