- Board: NUCLEO-L432KC, but should work on any STM32L4 board (and any STM32 with slight modifications)
- Pins used:
- PB4 (D12): SPI MISO
- PB5 (D11): SPI MOSI
- PB6 (D5): SPI CLK
- PB7 (D4): SPI NSS
- Serial baud rate: 2 000 000 bits/s
This project is built to connect to an SPI network and process any data sent through it in a transparent way. It's useful for debugging SPI device issues.
- Set your SPI speed to a really low one. Since a lot of data needs to be transferred via UART, decreasing the speed of your SPI network makes sure that all bits are caught in time.
- This project currently supports SPI mode 0 (
CPOL=0,CPHA=0).
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This project was built in STM32CubeMX for the Atollic TrueStudio IDE. If you load the project in STM32CubeMX, you can export it to use any other IDE of your choice.
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This project sets the processor clock to 80 MHz, the highest one achievable, so that the SPI data can be processed as fast as possible.
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The serial output contains colours. If your terminal doesn't support colours, you might see garbled characters.
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USART2 is used to output the data. The NUCLEO board will automatically send this data over USB. Alternatively, you can connect an FTDI232 USB-to-Serial converter on pin PA2 to receive the data. Note that you have to use a converter that supports a baud rate of 2 Mbits/sec.
The command I used to open the terminal on linux was:
minicom -c on -R utf-8 -b 2000000 -D /dev/ttyACM1
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The HAL driver is used, but all the necessary driver files are included in the Drivers folder.
- Src/main.c: The source code of the project
- spi-sniffer.ioc: Open this file inside STM32CubeMX to edit the project.
