I2C Tools
Jupiter Instruments (Jupiter Instruments)
A set of open-source Linux user-space utilities used to interact, debug, and test I2C/SMBus peripheral devices without writing code.
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Product
I2C Bus Monitor
Model JI-210
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The JI-210 is a PC hosted I2C bus monitor used to non-invasivelymonitor and analyze a variety of I2C networks. The desktop unitcaptures and stores up to 32KBs of bus activity including data andaddress values, stop/start, read/write, ACK/NACK, and frame errorevents. Data is displayed as both I2C messages and TimingWaveforms. A Windows software application manages capturedI2C messages, trigger setup, and recording settings.
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Product
I2C Bus Monitor - USB
Model JI-216
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The JI-216 I2C Bus Monitor is a low cost, easy-to-use PC hosted instrument specificallydesigned for troubleshooting and debugging I2C networks. The JI-216''s FPGA basedarchitecture provides for the capture and display of all valid or invalid messages and I2Cbus events. Captured I2C messages are available for display in two modes: real-timestreaming, or triggered. These modes provide optimized data display for either hardwareor software development. The SDA/SCL timing display aids in tracking down and solvinghardware timing problems. JI-216''s broad bandwidth (DC 3.4Mbits/s), wide input signalrange (0 15.0V), and variable signal filtering provides flexibility in monitoring a variety ofI2C bus systems. An intuitive Windows application manages instrument setup andcontrol. Communications and unit power is provided via a USB 2.0 link.
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Product
USB to I2C Adapter
Model JI-300
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The JI-300 is a versatile, easy to use PC hosted adapter used to drive I2C communicationsto/from a target device. The desktop unit can be configured to interface a variety of I2Cnetworks. Bus parameters such as clock frequency, duty-cycle, setup and hold times, busvoltage, and pull-up resistor values can be varied. JI-300''s diagnostic features including"excessive clock-stretch", "bus-not-free", and "bus contention" monitoring, as well as statusreporting at the conclusion of each message transaction simplifies I2C trouble-shooting. AWindows software application manages the setup and control of the instrument.Communications and unit power is provided via a USB 2.0 connection.
