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Testing without hardware

It's hard sometimes separating out problems with hardware, wiring, operating system, and software. Here are solutions:

  • Try with the Fake adapter
    /opt/owfs/bin/owhttpd --fake=10 -p 4444
    top highest level directory
    10.67C6697351FF 10.67C6697351FF directory
    bus.0 bus.0 directory
    uncached uncached directory
    settings settings directory
    system system directory
    statistics statistics directory
    structure structure directory
    simultaneous simultaneous directory
    alarm alarm directory
    • This is a trio of "simulated" bus masters. No actual hardware is required, but the software will report (simulated) data.
    • This is a great way to start software development of testing before the hardware is installed.
    • The Fake adapter doesn't require special operating system permission to access physical ports.
    • For testing the Tester and Mock adapter are variants of the Fake adapter with more predictable simulation.
    • Digitemp logo
    • Brian Lane's digitemp is an alternative 1-wire program with more limited scope, but simpler setup.
    • It supports the USB, passive and DS9097U adapters.
    • If digitemp also fails to work, there is a strong indication that the problem is hardware rather than software. 
  • Turn on debugging
    • --foreground to see simple errors
      > /opt/owfs/bin/owhttpd -u -p 4444 --foreground
               Could not open the USB adapter. Is there a problem with permissions?
               DEFAULT: ow_ds9490.c:DS9490_detect(306) Could not open the USB adapter. Is there a problem with permissions?
               DEFAULT: owlib.c:SetupInboundConnections(167) Cannot open USB adapter
    • --error_level=0 to 9 for increasing detail.

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