feat(vesc): integrate native calibration diagnostics and configuration archives

plugins/vesc/runtime/receiver.py

@@ -0,0 +1,22 @@
+"""Interpret the admitted FW 5.02 PPM input before its firmware deadband.
+
+app_ppm.c publishes input_val before utils_deadband. A nonzero decoded value
+inside app_ppm_conf.hyst is therefore not a motor command. Do not infer radio
+link presence from this value: the receiver can keep emitting failsafe pulses.
+"""
+import math
+
+
+def neutral_band(application):
+    band = application["app_ppm_conf.hyst"]
+    if (application["app_to_use"] not in (1, 4)
+            or application["app_ppm_conf.ctrl_type"] != 4
+            or not math.isfinite(band) or not .01 <= band <= .3):
+        raise ValueError("Unsupported PPM neutral configuration")
+    return band
+
+
+def active(level, band):
+    if not math.isfinite(level) or not math.isfinite(band) or not .01 <= band <= .3:
+        raise ValueError("Invalid PPM level or neutral band")
+    return abs(level) > band