143 lines
5.7 KiB
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143 lines
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<div id="projectname">2020-2021 Sunseeker Telemetry and Lighting System
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<div class="title">Design Choices </div> </div>
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<div class="textblock"><h1><a class="anchor" id="autotoc_md2"></a>
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JTAG Interface</h1>
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<p>When connecting the MCU to the programmer via the JTAG interface, it is possible for a local power supply connected to the MCU to be used or for power from the debugging/programming adapter to be used. Since having power supplied to the MCU from the debugging/programming adapter can be useful for use outside of the Sunseeker vehicle, we chose to use that.</p>
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<h1><a class="anchor" id="autotoc_md3"></a>
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Microcontroller Peripheral Connections</h1>
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<p>Universal Serial Communication Interfaces (USCIs):</p>
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<ul>
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<li>A - Supporting up to four total of UART and/or SPI<ul>
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<li>A0 [SPI]:<ul>
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<li>CANbus Controller 0 (Microchip Technology MCP2515T-I/SO)</li>
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<li>CANbus Controller 1 (Microchip Technology MCP2515T-I/SO)</li>
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</ul>
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</li>
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<li>A1:</li>
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<li>A2 [UART]:<ul>
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<li>RS-232 Transceiver (STMicroelectronics ST232CDR)</li>
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</ul>
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</li>
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<li>A3 [UART]:<ul>
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<li>USB to UART Bridge (Future Technology Devices International FT230XS-R)</li>
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</ul>
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</li>
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</ul>
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</li>
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<li>B - Supporting up to four total of I2C and/or SPI<ul>
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<li>B0 [SPI]:<ul>
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<li>SD Card</li>
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<li>GPS Receiver (Maxim Integrated MAX2771ETI+T)</li>
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</ul>
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</li>
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<li>B1 [SPI]:<ul>
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<li>Bluetooth/Wi-Fi (Espressif Systems ESP32-WROVER-IE (8MB))</li>
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</ul>
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</li>
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<li>B2 [I2C]:<ul>
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<li>Inertial Measurement Unit (TDK InvenSense ICM-20600)</li>
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<li>Real-Time Clock/Calendar (Microchip Technology MCP7940MT-I/SN)</li>
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</ul>
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</li>
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</ul>
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</li>
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</ul>
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<p>The thinking behind this so far, is to try and balance the load between the modules with SPI protocol being used in more high data-rate peripherals and I2C used with lower or less-used peripherals. </p>
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<li class="footer">Generated on Tue Feb 2 2021 00:44:35 for 2020-2021 Sunseeker Telemetry and Lighting System by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1 </li>
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