projects: max22007: Add README for MAX22007 project

Add documentation for MAX22007 example project

Signed-off-by: Janani Sunil <janani.sunil@analog.com>

Author: jansunil

doc/sphinx/source/projects/dac/max22007.rst

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+.. include:: ../../../../../projects/max22007/README.rst

projects/max22007/README.rst

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+MAX22007EVKIT no-OS Example Project
+===================================
+
+.. no-os-doxygen::
+
+.. contents::
+	:depth: 3
+
+Supported Evaluation Boards
+---------------------------
+
+* `MAX22007EVKIT <https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/max22007evkit.html>`_
+
+Overview
+--------
+
+The MAX22007EVKIT is a fully featured evaluation kit for the MAX22007.
+This board operates in standalone mode or in conjunction with SDP-K1
+
+Hardware Specifications
+-----------------------
+
+The MAX22007EVKIT device has to be supplied with a 7-9V DC voltage and
+a 3V3 VDRIVE voltage from the microcontroller (for the logic level
+voltage of the SPI communication).
+
+**Pin Description**
+
+	Please see the following table for the pin assignments for the
+	interface connector (SPI Test Points).
+
+	+------------+--------+----------------------------------+
+	| Pin        | Name   | Description                      |
+	+------------+--------+----------------------------------+
+	| PMOD1 pin1 | CSB    | SPI Chip-Select                  |
+	+------------+--------+----------------------------------+
+	| PMOD1 pin2 | SDO    | Master-Out Slave-In (MOSI)       |
+	+------------+--------+----------------------------------+
+	| PMOD1 pin3 | SDI    | Master-In Slave-Out (MISO)       |
+	+------------+--------+----------------------------------+
+	| PMOD1 pin4 | SCLK   | Serial Clock                     |
+	+------------+--------+----------------------------------+
+
+	Please ensure to open all the switches on SW1, to ensure compatibility 
+	with an external MCU
+
+	Please refer to the `MAX22007EVKIT Board user guide <https://www.analog.com/media/en/technical-documentation/data-sheets/max22007evkit.pdf>`_ for more details on jumper positions.
+
+No-OS Build Setup
+-----------------
+
+`Please see: <https://wiki.analog.com/resources/no-os/build>`_
+
+No-OS Supported Examples
+------------------------
+
+The initialization data used in the examples is taken out from:
+`Project Common Data Path <https://github.com/analogdevicesinc/no-OS/tree/main/projects/max22007/src/common>`_
+
+The macros used in Common Data are defined in platform specific files found in:
+`Project Platform Configuration Path <https://github.com/analogdevicesinc/no-OS/tree/main/projects/max22007/src/platform>`_
+
+Basic Example
+^^^^^^^^^^^^^
+
+This is a simple example which initializes the MAX22007 and writes to the data register of channel 0 and 3 with a value 
+equivalent to 2v and 4v respectively.
+
+In order to build the basic example make sure you have the following configuration in the Makefile
+`Makefile <https://github.com/analogdevicesinc/no-OS/tree/main/projects/max22007/Makefile>`_
+
+.. code-block:: bash
+
+	EXAMPLE ?= basic_example
+
+
+No-OS Supported Platforms
+-------------------------
+
+STM32 Platform
+^^^^^^^^^^^^^^
+
+**Used Hardware**
+
+* `MAX22007EVKIT <https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/max22007evkit.html>`_
+* `SDP-K1 <https://www.analog.com/en/resources/evaluation-hardware-and-software/evaluation-boards-kits/sdp-k1.html>`_
+
+**Connections**:
+
++---------------------+--------+----------------------------------+--------------------+
+| MAX22007EVKIT Pin   | Signal | Function                         | SDP-K1 Pin Number  |
++---------------------+--------+----------------------------------+--------------------+
+| PMOD1 pin1          | CSB    | SPI interface Chip-Select        | D10                |
++---------------------+--------+----------------------------------+--------------------+
+| PMOD1 pin2          | SDO    | Master-Out Slave-In (MOSI)       | D11                |
++---------------------+--------+----------------------------------+--------------------+
+| PMOD1 pin3          | SDI    | Master-In Slave-Out (MISO)       | D12                |
++---------------------+--------+----------------------------------+--------------------+
+| PMOD1 pin4          | SCLK   | SPI interface Serial Clock Line  | D13                |
++---------------------+--------+----------------------------------+--------------------+
+| GND                 | GND    | Ground                           | GND                |
++---------------------+--------+----------------------------------+--------------------+
+
+**Build Command**
+
+.. code-block:: bash
+
+	# to delete current build
+	make reset
+	# to build the project
+	make PLATFORM=stm32 HARDWARE=sdp-k1.ioc
+	# to flash the code
+	make run
+