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59 lines
1.9 KiB
59 lines
1.9 KiB
7 years ago
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<?php $curpage = basename(__FILE__); require '_header.php'; ?>
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<section>
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<div>
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<h1>Features</h1>
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<p>
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The project started as a STM32 alternative to BusPirate, offering access to the many
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hardware peripherals of STM32 microcontrollers. The firmware is modular, composed of
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functional blocks (“units”) that may be activated and configured by the user through
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INI configuration files. Those files are stored inside the module and edited
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programmatically, or with a text editor on a virtual FAT16 USB disk.
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</p>
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<p>
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GEX is used as a GPIO header for the PC, except besides GPIO it also supports a range
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of hardware buses, and several analog features. The device is configured for a particular
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hardware setup, but the control script runs on the host PC. This lets you build graphical
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applications above the low level control code with PyQt or other toolkits, process
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data with NumPy or SciPy, and more. When needed, the Python library may be called from
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within MATLAB, too.
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</p>
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<h2>Connection</h2>
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<p>
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GEX can be connected through USB (CDC/ACM - virtual COM port), by a hardware UART, or
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wirelessly, using a nRF24L01+ transceiver module.
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</p>
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<h2>Hardware Functions</h2>
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<p>
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The firmware version 1.0 for STM32F072 contains the following key features:
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</p>
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<ul>
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<li>Direct GPIO pin access
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<li>SPI master
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<li>I²C master
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<li>UART/USART
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<li>1-Wire master (including the search algorithm)
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<li>PWM output
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<li>Frequency and duty cycle measurement
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<li>ADC with oscilloscope-like features
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<li>DAC (analog output) with waveform generation based on DDS
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</ul>
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<p>
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Some features (specifically the analog ones) are experimental and exhibit various
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limitations. These will be addressed in a later firmware version, possibly as a full
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rewrite.
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</p>
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</div>
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</section>
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<?php require '_footer.php'; ?>
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