Emulation from IVCurves has a bug

[orgua]

Deriving a Harvester-Config with custom window-size does NOT set the step-size at all

hrv_config = HarvesterPRUConfig.from_vhrv(
    self.cfg_src.harvester,
    for_emu=True,
    dtype_in=dtype_in,
    window_size=window_size,
)

• so samples_n is still 8
• voltage step is most likely (5000 mV - 0 V)/(8 - 1) = 714 mV
• PRU-internal step_x4 is ~ 3 V
• that is causing faulty behavior, as ramp-resets of IVCurves are not detected anymore when the ramp is < 3 V

Workaround

Until fixed, it is needed to specify sample_n manually, i.e.

cfg_bq25570_base = VirtualSourceConfig(
    name="BQ25570",
    harvester=VirtualHarvesterConfig(
        name="mppt_bq_solar",
        samples_n=900,
)