161 lines
6.6 KiB
HTML
161 lines
6.6 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html xmlns:v="urn:schemas-microsoft-com:vml"
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xmlns:o="urn:schemas-microsoft-com:office:office"
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xmlns:w="urn:schemas-microsoft-com:office:word"
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xmlns:m="http://schemas.microsoft.com/office/2004/12/omml"
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xmlns:st1="urn:schemas-microsoft-com:office:smarttags"
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xmlns="http://www.w3.org/TR/REC-html40">
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<head>
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<meta http-equiv="Content-Type"
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content="text/html; charset=windows-1252">
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<meta name="ProgId" content="Word.Document">
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<meta name="Generator" content="Microsoft Word 14">
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<meta name="Originator" content="Microsoft Word 14">
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<base target="_parent">
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<link rel="Edit-Time-Data" href="index_files/editdata.mso">
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<title>SDCFile</title>
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<o:smarttagtype
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namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"></o:smarttagtype><o:smarttagtype
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namespaceuri="urn:schemas-microsoft-com:office:smarttags"
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name="PlaceName"></o:smarttagtype>
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<o:smarttagtype
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namespaceuri="urn:schemas-microsoft-com:office:smarttags"
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name="PlaceType"></o:smarttagtype>
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<link rel="themeData" href="index_files/themedata.thmx">
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<link rel="colorSchemeMapping"
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href="index_files/colorschememapping.xml">
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<style>
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</style>
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</head>
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<body style="background-color: white;" alink="#0000ff" lang="EN-US"
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link="blue" vlink="#c40026">
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<div class="WordSection1">
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<p style="text-align: center;" align="center"><span
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style="font-size: 18pt;">SDCFile</span><br>
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<table class="MsoNormalTable"
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style="border: 3pt outset ; background: rgb(255, 204, 153) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; width: 100%;"
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border="1" cellpadding="0" width="100%">
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<tr>
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<td>
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<p><b><span style="font-size: 18pt;">Readme</b></span>
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<br> <br>
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This is a C language project that demonstrates the <i>serial
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peripheral interface</i> (SPI). This
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project interfaces the ST7735R LCD and SDC to the microcontroller.<br>
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<b>main0</b> Low level test, it will leave the SDC unformated. <br>
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<b>main1</b> Simple file write and test, SDC needs FAT16 format. <br>
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<b>main2</b> Longer file write and test, SDC needs FAT16 format. <br>
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<b>main3</b> Will create a large binary file called Sound.bin.<br>
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<b>main4</b> Will stream Sound.bin to 12-bit DAC at 11.025 kHz.
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</p>
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<p>First run main3 to create Sound.bin. Then, connect PB20 (TExaS scope) to PA15 (DAC output) and run main4.</p>
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<img src="main4.png" alt="Image" style="width:500px;"><br> <br>
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Derived from Texas Instrument code
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<ul>
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<li>spi_controller_multibyte_fifo_poll_LP_MSPM0G3507_nortos_ticlang</li>
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<li>spi_controller_command_data_control_LP_MSPM0G3507_nortos_ticlang</li>
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<li>spi_peripheral_register_format_LP_MSPM0G3507_nortos_ticlang</li>
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</ul>
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</td>
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</tr>
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</table>
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</p>
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<table class="MsoNormalTable"
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style="border: 3pt outset ; background: rgb(252, 243, 144) none repeat scroll 0% 50%; -moz-background-clip: initial; -moz-background-origin: initial; -moz-background-inline-policy: initial; width: 100%;"
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border="1" cellpadding="0" width="100%">
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<tbody>
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<tr>
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<td>
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<p><b><span style="font-size: 18pt;">Hardware Required</b></span>
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<br>
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<ul>
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<li>MSPM0G3507 LaunchPad™ Development Kit (LP-MSPM0G3507)</li>
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<li>We have tested 2 verions of the 160by128 pixel ST7735R with SDC
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<ol><li>Adafruit ST7735R Product ID: 358</li>
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<li>HiLetgo ST7735 TFT and SDC</li>
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</ol>
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</li>
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</ul>
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<b><span style="font-size: 18pt;">Pin assignments</b></span>
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<br>
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<p>The following shows the wiring for the Adafruit ST7735R.
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See the source code in ST7735.c for wiring other displays.</p>
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<img src="ST7735pins.png" alt="Image" style="width:500px;"><br> <br>
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<ul>
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<li>SPI1 SCLK: PB9 is ST7735R LCD clock CLK</li>
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<li>SPI1 PICO: PB8 is ST7735R LCD data MOSI</li>
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<li>SPI1 POCI: PB7 is SDC data MISO</li>
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<li>GPIO Output: PB6 is ST7735R LCD chip select TFT_CS</li>
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<li>GPIO Output: PB15 is ST7735R LCD !RST </li>
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<li>GPIO Output: PA13 is ST7735R LCD RS </li>
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<li>GPIO Output: PA12 is SDC chip select CARD_CS </li>
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<li>Analog Output: PA15 is 12-bit DAC output</li>
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<li>Analog Input: PB20 is ADC input used by TExaS scope</li>
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<li>Output: PA0 is red LED1, index 0 in IOMUX PINCM table</li>
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<li>Output: PB22 is blue LED2, index 49 in IOMUX PINCM table</li>
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<li>Output: PB26 is red LED2, index 56 in IOMUX PINCM table</li>
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<li>Output: PB27 is green LED2, index 57 in IOMUX PINCM table</li>
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<li>Input: PA18 is S2 positive logic switch, index 39 in IOMUX PINCM table</li>
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<li>Input: PB21 is S3 negative logic switch, index 48 in IOMUX PINCM table</li>
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</ul>
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<b><span style="font-size: 18pt;">LaunchPad Jumpers</b></span>
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<br>
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<ul>
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<li>Remove J16 J17 J18: Disconnects light sensor from the microcontroller PA22 PA27 PA26</li>
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<li>J4: Connects PA0 to red LED</li>
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<li>J5: Connects PB22 to blue LED2</li>
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<li>J6: Connects PB26 to red LED2</li>
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<li>J7: Connects PB27 to green LED2</li>
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</ul>
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</p> </td>
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</tr>
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</tbody>
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</table>
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</body>
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</html>
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<p>
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Simplified BSD License (FreeBSD License)
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Copyright © 2025, Jonathan Valvano, All rights reserved.<br>
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<br>
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:<br>
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<ol>
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<li>Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.</li>
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<li>Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.</li></ol>
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.<br>
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<br>
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The views and conclusions contained in the software and documentation are
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those of the authors and should not be interpreted as representing official
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policies, either expressed or implied, of the FreeBSD Project.
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<br>
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</p>
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<p>For more information, see <a href="http://users.ece.utexas.edu/~valvano/">
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http://users.ece.utexas.edu/~valvano/</a>.
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</p>
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</div>
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</body>
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</html>
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