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QNX RTOS v4 Knowledge Base

QNX RTOS v4 Knowledge Base

Foundry27
Foundry27
QNX RTOS v4 project
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QNX RTOS v4 Knowledge Base

Title Uninterruptable Power Supplies(UPS) for QNX4
Ref. No. QNX.000009527
Category(ies) Kernel, Filesystem, Configuration
Issue Are there UPSs available which work with QNX4?


Solution There are no QNX4 software solutions.  Generally, UPS hardware is designed to send a signal, usually serially, when power interruption occurs.  This signal can be hooked up to a QNX4 machine's serial port.  Under QNX4, the programmer would simply attach an interrupt handler to this signal(interrupt) and when it is triggered, the process could send a SIGPOWER signal to all of the processes, enabling a proper shutdown of the system.

There are a few UNIX utils which will talk to the popular UPS's, which should be  straight-forward to port to QNX4.