ECT System Development Project

Custom Electrical Capacitance Tomography System with Hardware. 8 electrodes system.

Two main parts:

1. Embedded (C/C++): Multi-module PCB hardware with STM32H743ZI.
2. Emulator (Python): Computer UI for hardware control by USB-C.

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Embedded code

Currently (Mar 6, 2019), STM32H7 MCU Package on STMCubeMX does not support DSP library. Manual import of DSP source files is essential.

1. Download CMSIS Pack from ARM (https://github.com/ARM-software/CMSIS_5).
2. Create "/DSP_Lib" & "/Lib" folders into "(Project root)/Drivers/CMSIS/".
3. Duplicate all files in ".../CMSIS/DSP/Source/" into "(Project root)/Drivers/CMSIS/DSP_Lib/".
4. Duplicate all files in ".../CMSIS/DSP/Include/" into "(Project root)/Drivers/CMSIS/Include/".
5. Duplicate ".../CMSIS/Lib/ARM" & ".../CMSIS/Lib/GCC" folders into "(Project root)/Drivers/CMSIS/Lib/".
6. From top menu in Eclipse IDE, go to "Project - Properties - C/C++ General - Paths and Symbols - Symbols" tab. Add "__FPU_PRESENT" and "ARM_MATH_CM7" to Symbol. Allocate "__FPU_PRESENT = 1". No allocation is needed to ARM_MATH_CM7.
7. From top menu in Eclipse IDE, go to "Project - Properties - C/C++ General - Paths and Symbols - Library Paths" tab. Add ".../Drivers/CMSIS/Lib/".

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Emulator code

Pre-requisite modules

1. Pyqt5 https://pypi.org/project/PyQt5/ => pip install pyqt5

2. Pyqtgraph http://www.pyqtgraph.org/ => pip install pyqtgraph

3. Numpy http://www.numpy.org/ => pip install numpy

4. pyusb https://github.com/pyusb/pyusb => pip install pyusb

5. FEniCS https://fenicsproject.org/ => conda install -c conda-forge fenics

(Alternatively) sudo apt-get install software-properties-common sudo add-apt-repository ppa:fenics-packages/fenics sudo apt-get update sudo apt-get install --no-install-recommends fenics

6. PyOpenGL http://pyopengl.sourceforge.net/ => pip install pyopengl

7. Matplotlib => conda install -c conda-forge matplotlib

8. Cython => pip install Cython

9. Scipy => pip install scipy

• Refer the offical websites for installation

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Caution

Ubuntu's udev rule must be modified for usb connection by pyusb

1. Create rule file => sudo gedit /etc/udev/rules.d/99-ectusb.rules
2. Fill the contents: => SUBSYSTEM=="usb", ATTR{idVendor}=="0483", ATTR{idProduct}=="5740", MODE="666"
3. Save and restart udev => sudo udevadm trigger