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doc: wifi: Add note for pin conflict in nRF7002 EK ug
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Added a note for a pin conflict between nRF7002 EK
and nRF9160 DK when modem trace is enabled in the
Getting started with nRF7002 EK user guide.

SHEL-2557

Signed-off-by: Richa Pandey <[email protected]>
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@richabp @rlubos
richabp authored and rlubos committed Mar 15, 2024
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87 changes: 48 additions & 39 deletions doc/nrf/device_guides/working_with_nrf/nrf70/nrf7002ek_gs.rst
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Expand Up @@ -41,45 +41,54 @@ Pin assignment for Arduino interface connector
The Arduino interface of the nRF7002 EK is compatible with the nRF52840 DK, the nRF5340 DK, and an nRF91 Series DK.
The interface connectors are described in the following table:

+------------------+-----------------------+----------------------------------+
| Arduino pin name | nRF7002 Signal | Function |
+==================+=======================+==================================+
| D0 | IOVDD_EN | Enable power to I/O interface |
+------------------+-----------------------+----------------------------------+
| D1 | BUCK_EN | Enable power to nRF7002 |
+------------------+-----------------------+----------------------------------+
| D2 | COEX_STATUS0 | Coexistence status 0 |
+------------------+-----------------------+----------------------------------+
| D3 | COEX_REQ | Coexistence request from host |
+------------------+-----------------------+----------------------------------+
| D4 | COEX_GRANT | Coexistence grant to host |
+------------------+-----------------------+----------------------------------+
| D5 | SW_CTRL0 | Switch control 0 |
+------------------+-----------------------+----------------------------------+
| D6 | COEX_STATUS1 | Coexistence status 1 |
+------------------+-----------------------+----------------------------------+
| D7 | HOST_IRQ | Interrupt request to host |
+------------------+-----------------------+----------------------------------+
| D8 | DATA2 | QSPI data line 2 |
+------------------+-----------------------+----------------------------------+
| D9 | DATA3 | QSPI data line 3 |
+------------------+-----------------------+----------------------------------+
| D10 | SS | Slave select |
+------------------+-----------------------+----------------------------------+
| D11 | MISO/DATA1 | QSPI/SPI Data line 1/ Slave Out |
+------------------+-----------------------+----------------------------------+
| D12 | MOSI/DATA0 | QSPI/SPI Data line 0/ Slave In |
+------------------+-----------------------+----------------------------------+
| D13 | CLK | QSPI/SPI Clock |
+------------------+-----------------------+----------------------------------+
| GND | GND | Ground |
+------------------+-----------------------+----------------------------------+
| AREF | N.C. | Not used |
+------------------+-----------------------+----------------------------------+
| SDA | N.C. | Not used |
+------------------+-----------------------+----------------------------------+
| SCL | N.C. | Not used |
+------------------+-----------------------+----------------------------------+
+----------------------+-----------------------+----------------------------------+
| Arduino pin name | nRF7002 Signal | Function |
+======================+=======================+==================================+
| **D0** | IOVDD_EN | Enable power to I/O interface |
+----------------------+-----------------------+----------------------------------+
| **D1** | BUCK_EN | Enable power to nRF7002 |
+----------------------+-----------------------+----------------------------------+
| **D2** | COEX_STATUS0 | Coexistence status 0 |
+----------------------+-----------------------+----------------------------------+
| **D3** | COEX_REQ | Coexistence request from host |
+----------------------+-----------------------+----------------------------------+
| **D4** | COEX_GRANT | Coexistence grant to host |
+----------------------+-----------------------+----------------------------------+
| **D5** | SW_CTRL0 | Switch control 0 |
+----------------------+-----------------------+----------------------------------+
| **D6** | COEX_STATUS1 | Coexistence status 1 |
+----------------------+-----------------------+----------------------------------+
| **D7** | HOST_IRQ | Interrupt request to host |
+----------------------+-----------------------+----------------------------------+
| **D8** | DATA2 | QSPI data line 2 |
+----------------------+-----------------------+----------------------------------+
| **D9** | DATA3 | QSPI data line 3 |
+----------------------+-----------------------+----------------------------------+
| **D10** | SS | Slave select |
+----------------------+-----------------------+----------------------------------+
| **D11** | MISO/DATA1 | QSPI/SPI Data line 1/ Slave Out |
+----------------------+-----------------------+----------------------------------+
| **D12** | MOSI/DATA0 | QSPI/SPI Data line 0/ Slave In |
+----------------------+-----------------------+----------------------------------+
| **D13** | CLK | QSPI/SPI Clock |
+----------------------+-----------------------+----------------------------------+
| **GND** | GND | Ground |
+----------------------+-----------------------+----------------------------------+
| **AREF** | N.C. | Not used |
+----------------------+-----------------------+----------------------------------+
| **SDA** | N.C. | Not used |
+----------------------+-----------------------+----------------------------------+
| **SCL** | N.C. | Not used |
+----------------------+-----------------------+----------------------------------+

.. note::
``UART1`` cannot be used and must be disabled on the nRF9160 DK, as ``UART1`` ``RXD`` and ``TXD`` conflict with pins **P0.00** and **P0.01** (Arduino pins **D0** and **D1**).
These correspond to the IOVDD-CTRL-GPIOS and BUCKEN-GPIOS signals in the nRF7002 EK, respectively.

For an nRF7002 EK connected to an nRF9160 DK, you can find example overlays at the following paths:

* :file:`sdk-nrf/boards/shields/nrf7002ek/boards/nrf9160dk_nrf9160_ns.overlay`
* :file:`sdk-nrf/samples/cellular/lwm2m_client/boards/nrf9160dk_with_nrf7002ek.overlay`

Minimum requirements
********************
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