c466021bb6
B12: PA IDQ calibration loop condition inverted (< 0.2 -> > 0.2) for both DAC1/DAC2 B13: DAC2 ADC buffer mismatch — reads from hadc2 now correctly stored to adc2_readings B14: DIAG_SECTION macro call sites changed from 2-arg to 1-arg form (4 sites) B15: htim3 definition + MX_TIM3_Init() added (PWM mode, CH2+CH3, Period=999) B16: Removed stale NO-OP annotation on TriggerTimedSync (already fixed in Bug #3) B17: Updated stale GPIO-only warnings to reflect TIM3 PWM implementation (Bug #5) All 15 tests pass (11 original + 4 new for B12-B15).