Hardware-software integration testing for embedded systems
Test what happens where firmware meets real hardware.
Midair keeps code findings, device state, test conditions and runtime evidence connected, so hardware-software integration failures can be reproduced, investigated and verified in context.
The code can pass. The device can still fail.
Hardware-software integration failures often depend on conditions outside the source code itself.
A firmware build may work on one device and fail on another because of hardware state, timing, configuration, network conditions or the sequence in which components start.
When the exact environment behind a failed run is lost, reproducing the problem becomes a separate investigation.
Hardware-dependent behavior
The same firmware can behave differently across device models, hardware revisions or peripheral states.
Timing and state
Some failures appear only during boot, reset, recovery or a specific sequence of events.
Test environments change
Device state, host configuration, network setup and other conditions can drift between runs.
Evidence is scattered
Code findings, test results and device logs often live in different tools, making the original failure difficult to reconstruct.
Keep the whole integration run in one context.
Midair connects analysis, testing and runtime evidence across the hardware-software integration workflow.
Before the run
Analyze · Visao
Analyze source code and project-specific rules before the software reaches the target device.
During the run
Test · TS Factory
Run integration scenarios across devices and test hosts while recording the environment used for each run.
While the system runs
Observe · Delta
Collect logs, system events and runtime data from the software during execution.
Everything together
Investigate · Midair
Review the failed run together with its firmware version, configuration, device context and runtime evidence.
Compare the original failure with later runs after the code or configuration changes.
What hardware-software integration testing can cover
The exact setup depends on the product, but integration testing becomes especially useful where software behavior depends on the physical system around it.
Firmware and device interfaces
Validate how firmware behaves when communicating with the target hardware.
Drivers and peripherals
Test interactions with hardware components, controllers and external devices.
Boot, reset and recovery
Reproduce failures that depend on startup state, initialization order or recovery flows.
Hardware and firmware combinations
Compare behavior across firmware builds, device variants and hardware revisions.
Network and protocol behavior
Test systems where device behavior depends on communication with other hardware, hosts or services.
Multi-device scenarios
Coordinate tests where several devices or machines participate in the same system behavior.
Hardware-in-the-loop testing
Hardware-in-the-loop setups make it possible to test software against real or simulated hardware behavior before the complete system is available.
In a Midair workflow, HIL tests can be treated like any other reproducible integration run: keep the software version, test setup, device or simulator configuration and runtime evidence connected with the result.
This is especially useful when failures depend on timing, device state or interactions that cannot be reproduced reliably in software-only testing.
Connected device and firmware integration testing
Besides the HIL bench, integration failures show up in two more places: where firmware meets the silicon, and where a device depends on a network it does not control.
Firmware integration with hardware
Many late, expensive defects start here: driver initialization order, interrupt latency, DMA and memory contention, power states and wake-up paths. Timing that holds on the development board can break on production silicon. For tests of the firmware image itself, see firmware testing.
Connected device testing
Some behavior exists only once a device is part of a wider system: provisioning, protocol handling, reconnection after signal loss, over-the-air updates and slow or missing networks. Each component can pass on its own and still fail in the interaction. For connected products and fleets, see IoT device testing.
A failed run is useful only if you can recreate it.
For embedded testing, reproducibility means knowing exactly what was running and under which conditions.
A useful test record can include the firmware build, device identity, relevant configuration, network setup, host environment and test inputs. Interpretica's own embedded-testing work stores this information with the test result itself.
TS Factory is designed for distributed device environments and records the context around test runs, while Midair keeps that evidence connected with the rest of the investigation.
Firmware version
Know exactly which build produced the result.
Device and configuration
Keep the target setup associated with the run.
Test environment
Track the hosts, network and relevant test conditions.
Runtime evidence
Keep logs and system events with the run that produced them.
Comparison between runs
See what changed between the failure and the verified fix.
Where this becomes useful
Embedded devices and firmware
Investigate behavior that appears only once software is running on the target hardware.
Network hardware
Test routers, gateways and other connected devices across firmware, configuration and network conditions.
Device fleets
Run and compare scenarios across multiple physical devices without losing the context of each run.
Complex test labs
Coordinate systems where one test depends on several hosts, devices or services.
Difficult regressions
Recreate failures that disappeared after the original test and verify whether a change actually fixed them.
Why Midair fits hardware-software testing
Hardware-software failures cross system boundaries. A problem may originate in source code, depend on a particular device configuration and only become visible during runtime.
Midair keeps those layers connected, so the investigation does not stop at a test result. The conditions and evidence behind the failure stay with it.
FAQ
What is hardware-software integration testing?
Hardware-software integration testing checks how software, firmware and physical hardware behave together as one system.
What is the difference between hardware-software integration testing and HIL testing?
Hardware-software integration testing is the broader practice. Hardware-in-the-loop is one way to perform it by testing real software against physical or simulated hardware components.
Can Midair be used in hardware-in-the-loop workflows?
Midair can keep test configuration, software versions and runtime evidence connected across distributed test environments, including HIL scenarios.
Does this cover connected device testing?
Yes. Tests can cover provisioning, protocol handling, reconnection, over-the-air updates and behavior on a degraded network. For connected products and device fleets, see IoT device testing.
Start with one integration failure.
Bring one firmware build, one target setup and one hardware-software failure that is difficult to reproduce.
Start small, connect the environment to Midair and keep the evidence from the first failed run through the final verification.
Community
€0
Run Visao and TS Factory on a shared instance and review the findings.
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€90per month
Your own Midair instance for the team, with Delta, MCP and AI analysis of results.
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€990per month
Add SBOM and vulnerability analysis, team performance metrics and self-hosted instances.
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Custom
Adapt Midair to a large-scale, embedded or regulated environment.
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