5 releases
0.1.5 | Oct 8, 2023 |
---|---|
0.1.4 | Sep 12, 2021 |
0.1.3 | Aug 7, 2019 |
0.1.1 | Aug 1, 2019 |
0.1.0 | Jul 31, 2019 |
#133 in Embedded development
12KB
199 lines
spicat
A command line tool to perform full-duplex SPI transactions.
Example:
$ echo -n 'Hello world!' | spicat /dev/spidev1.0 --speed 10000000
48 65 6c 6c 6f 20 74 68 65 72 65 21
This will read 'Hello world!' from standard input, and send it over SPI to the connected device. The response will be printed to standard output.
The output format depends on whether or not output is going to a terminal.
If it is, output is printed in hexadecimal format by default.
Otherwise, the raw bytes are printed by default.
This behaviour can be overridden with the --format
option.
The transaction can be repeated a number of times with the --repeat
option,
to stress-test an SPI bus or device.
The --pre-delay
option can be used to add a delay after asserting the chip select,
before transmitting the data.
This can be useful to give an SPI device some time to react to the chip select.
Note that this wait time is implemented by the Linux kernel,
which may mean the exact delay can be a few microseconds longer than the requested value.
See spicat --help
for a list of every available option.
Install
Run cargo install spicat
to install the tool with cargo.
Dependencies
~3.5MB
~68K SLoC