PC controlled Signal Generator based on a PSoC 4. The idea is to have a small kit that can generate two PWM signals in-sync or with changable phase difference. All controls are accessible via the COM interface using a terminal application.
Author: Angad Gill
The $4 PSoC 4 Prototyping Kit is used here along with the MiniProg. The MiniProg isn't necessary as the PSoC device can be programmed using the bootloader, but I haven't tried that feature yet.
A serial communication terminal application is needed to interact with the Signal Generator. I prefer to use Python's PySerial package which comes with an excellent miniterm program. It can be installed using pip as follows:
pip install pyserial
And connected to the Signal Generator using the following command:
On Windows: python -m serial.tools.miniterm COM4 115200 -e
On Mac: python -m serial.tools.miniterm /dev/cu.usbmodem14231 115200 -e
COM4is the port for the PSoC 4 Prototyping kit on my Windows computer and/dev/cu.usbmodem1431is the port on my Mac. Use this command to see all available ports:python -m serial.tools.list_ports115200is the baud rate.-eenables the echo mode inminitterm
The code has the following three commands built into it, type them in the terminal and hit Enter to see usage formats:
helppwmled