pycosmicsdk
Python SDK for the Binho Supernova and Binho Pulsar USB host adapters: I2C, I3C, SPI,
UART and GPIO from Python, with a blocking API and an asyncio twin for every protocol.
pip install pycosmicsdk
Binary wheels ship for CPython 3.10–3.14 on Linux x86_64, macOS arm64 and Windows
AMD64. The native CosmicSDK library is linked into the wheel, so there is nothing else to
install and no path to configure.
First steps
import pycosmicsdk as p
print(p.list_devices()) # every attached Supernova / Pulsar
with p.Device.open() as dev: # the first adapter found
print(dev.info.fw_version)
i2c = dev.i2c()
i2c.set_voltage(voltage_mv=3300)
i2c.bring_up(frequency_hz=400_000, pull_up=p.I2cPullUp.KOHM_1_0)
print(sorted(i2c.scan().addresses_7bit)) # addresses that ACKed
| Protocol | Supernova | Pulsar |
|---|---|---|
| I2C controller and target | bus A | buses A and B |
| I3C controller (all CCCs) and target | yes | — |
| SPI controller and target | yes (target not on rev B) | yes |
| UART | yes | yes |
| GPIO, with interrupts | yes | yes |
Large transfers can use the adapter's USB bulk endpoint: up to 32 KB on a Supernova and 16 KB on a Pulsar per call.
Linux
The adapters are USB HID devices and need no driver on any platform. On Linux, add a udev rule
so they are reachable without root. Without it, list_devices() still finds the adapter but
its serial number comes back empty.
# /etc/udev/rules.d/65-binho.rules
SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="82fc", MODE="0660", GROUP="plugdev"
SUBSYSTEM=="usb", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="82fc", MODE="0660", GROUP="plugdev"
SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="82fd", MODE="0660", GROUP="plugdev"
SUBSYSTEM=="usb", ATTRS{idVendor}=="1fc9", ATTRS{idProduct}=="82fd", MODE="0660", GROUP="plugdev"
Then run sudo udevadm control --reload && sudo udevadm trigger and add your user to plugdev.
Versions and firmware
MAJOR.MINOR follows the CosmicSDK release embedded in the wheel: pycosmicsdk 1.6 carries
CosmicSDK 1.6. Features that need newer adapter firmware say so, and older firmware answers
them with FW_UNSUPPORTED_COMMAND rather than failing silently. Update the adapter's firmware
from Mission Control.
Support
- Product pages and Mission Control: https://binho.io
- Support: https://support.binho.io · support@binho.io
1 maintainer
Metadata
1 maintainer
Release files for pycosmicsdk 1.7.0
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