Smooth STSPIN3202 Firmware

The hardware is already spinning on the STSPIN3202 driver board; now I need the production-ready firmware to match. The code base must be written in Embedded C/C++ inside Keil MDK and target the STSPIN3202 as the main motor controller.

Priority & behaviour
My first concern is achieving reliable initial torque with a gradual, ultra-smooth ramp-up. The start-up sequence should feel seamless rather than aggressive, so the motor climbs from standstill to operating speed without jerk. Fine-tuning of current limits, PWM frequency and open-loop/closed-loop transition will be part of the task.

Peripheral features to integrate
• KM5S display protocol – at minimum the rider’s speed must be shown in real time, with room in the frame for battery level and error flags later.
• Speed-lock / cruise-control that works off the throttle input, holding the chosen speed until the rider intervenes.
• PAS (pedal assist) sensor input with debounce and error handling.

Deliverables
1. Complete Keil project with well-commented C/C++ source.
2. Configuration tables (current, ramp timings, PID gains) exposed in a header or EEPROM map.
3. Flash-ready hex file plus a short PDF explaining pin-outs, compile steps and how to tweak ramp characteristics.
4. Proof of function: video or live session demonstrating smooth take-off, display read-out, stable cruise and PAS response.

If you have prior experience with STSPIN3202—or similar brushless motor drivers—let’s refine the ramp and get this bike running like it should.