Drone software sits where real-time control, communication and autonomy meet. The flight controller has to hold deterministic timing for its stabilisation loops while the payload fuses sensors, processes images and streams data. Communication stacks for beyond-visual-line-of-sight (BVLOS) operations need fail-safe behaviour when the link drops, and ground control software has to handle telemetry without losing or misreading it. GSAS engineers that software and the hardware tests around it, and produces the verification evidence as the code is written.
Certification paths
In India, the Drone Rules, 2021 set out a type certification process, with DGCA as the regulator. Defence programmes for larger fixed-wing UAVs may work to STANAG 4671 airworthiness requirements, and export programmes to DO-178C. Each path asks for evidence about how the software was built and verified. GSAS produces that evidence: coding-standard enforcement, unit tests with coverage, bench test records and tool documentation. The certificate and the approval stay with the manufacturer and the authority.
Klocwork runs MISRA and security checkers on every change, so findings reach the developer who made them. Arm tools cover the processors: Keil MDK for Cortex-M flight controllers, Arm Development Studio for Cortex-A application processors and Cortex-R real-time processors, and ULINKplus for power measurement while flight algorithms are tuned for endurance. PicoScope oscilloscopes handle ESC characterisation, motor drive validation and bus debugging in the field, and GW Instek power supplies drive controlled bench tests of power distribution boards and battery management units.
On-board vision and edge AI payloads
UAV payloads increasingly run inference on the aircraft: obstacle detection on Cortex-M55 with Ethos-U, multi-camera perception on AMD Kria SOMs for inspection drones, and target tracking on NVIDIA Jetson Orin Nano for defence ISR. The Edge AI and vision capability covers sensor bring-up, model optimisation against the power and thermal envelope, inference deployment, and the update path that keeps a fielded model current.