STM32 MCSDK integration – control loops, PWM and ADC synchronisation

What we do

We integrate and harden STM32 Motor Control SDK (X-CUBE-MCSDK) projects for production hardware. From control-loop setup and PWM / ADC synchronisation through DMA paths and sensor integration (encoder, Hall, sensorless) we make your project deterministic, maintainable and ready for validation.

Outcomes we aim for

• Stable current and speed control loops with documented stability margins.
• Clean PWM to ADC timing with calibrated measurement chains.
• Well-defined DMA and ISR pipelines plus predictable scheduler timing.
• Portable CubeIDE / CubeMX projects with reproducible builds.
• Measurable performance with logs, plots and clear acceptance criteria.

Services

• MCSDK project setup and porting – create new projects or migrate from Nucleo / EVAL boards to your custom inverter (pinout, timers, ADCs, drivers).
• Control-loop integration – dq current and speed controllers, anti-windup, saturation handling, feed-forward and decoupling.
• PWM and ADC synchronisation – centre-aligned PWM, injected ADC sampling at current peaks, dead-time compensation and SVM sector logic.
• Measurement chain and calibration – shunt / Hall / LEM / DFSDM configuration, offset and scaling, gain plausibility and temperature sensors.
• Sensor interfaces – incremental encoder and Hall decoding; sensorless observers (SMO / MRAS / PLL) and handover logic.
• DMA and ISR budgeting – circular and double-buffered DMA, bounded ISR run times and a NVIC priority plan, with or without FreeRTOS.
• Field-weakening and MTPA – field-weakening and torque optimisation integrated with speed-loop limits.
• Fault handling – overcurrent, over- and undervoltage, thermal derating, kill inputs (BKIN / BRK) and controlled restart behaviour.
• Code review and refactor – HAL / LL hygiene, clear module boundaries, configuration headers and structured parameter sets.
• Test harness and logging – scripted sweeps, telemetry hooks, plots and regression tests.

Your deliverables

• A running MCSDK project for STM32CubeIDE / CubeMX, including the .ioc file and source code with documented initialisation and parameters.
• Integration report (PDF) with diagrams, timing budgets, stability margins and test results.
• Parameter packs: controller gains, limits and hardware constants in header files and CSV format.
• Diagnostics and logs: binaries and CSV data, plotting notebooks (Python / MATLAB) and an acceptance checklist.
• Handover session (60–90 minutes) – walkthrough with your engineering team.

Technology stack

• MCUs: STM32F3 / F4 / F7, G4, H7, U5.
• SDK and tools: X-CUBE-MCSDK, STM32CubeIDE, CubeMX, HAL / LL, optional FreeRTOS.
• Peripherals: TIM1 / TIM8 advanced timers, HRTIM on G4, injected and regular ADC groups, DMA, OPAMP / COMP, DFSDM.
• Motors: PMSM / IPMSM and BLDC, including migration from 6-step to FOC.
• Math: CMSIS-DSP, single-precision FPU and fixed-point where timing budgets demand it.

Engagement flow

• Discovery (30 minutes) – hardware, performance goals and constraints.
• Plan and setup – project framing and porting, pin / timer / ADC mapping and risk list.
• Integration and tuning – control loops, PWM / ADC sync, sensors, DMA and ISR configuration.
• Validation – sweeps over speed, torque, DC-bus voltage and temperature; pass / fail against your KPIs.
• Handover – documentation, code, parameter sets and team training.

What we need from you

• Schematics and PCB information plus motor and inverter specs (pole pairs, Rs, Ld / Lq if known, Ke / Kt).
• Target PWM frequency, ADC sampling windows and measurement chain topology (shunt, Hall, LEM or DFSDM).
• Encoder / Hall details (CPR / pole-pair mapping) or a clear sensorless requirement.
• KPIs such as overshoot ≤ 5 %, torque ripple ≤ X %, settling time ≤ Y ms.

Example packages

• Integration audit – code and hardware review, timing and stability plan and a prioritised task list.
• MCSDK build-out – full integration on your hardware plus validation report.
• Production hardening – robustness at operating limits, documentation and team training.

Example use cases

• Custom-board bring-up – move from a Nucleo demo to your inverter with clean SVM and calibrated currents.
• Performance improvements – increase current-loop bandwidth, reduce torque ripple and stabilise low-speed operation.
• Migration paths – 6-step to FOC, or sensored to sensorless with seamless handover.
• Compliance preparation – documented protection paths and test evidence for certification workflows.

FAQ