Checkpoint EEPROM, firmware analysis and instrument protocol updates

python/set_devices/ump_logger_demo.py

@@ -24,7 +24,8 @@ def sample(time_ms, period_ms=20, *, repeat=True):
     else:
         current = 4
 
-    words = [0] * codec.WORDS
+    # Extended logger record includes both DC-link voltage measurements.
+    words = [0] * 42
     words[0], words[1] = time_ms & 65535, (time_ms >> 16) & 65535
     words[2] = 1 | (0x100 if 5000 <= phase < 5000 + period_ms else 0)
     words[3] = (int(started) << 7) | (int(reset) << 6)
@@ -42,6 +43,14 @@ def sample(time_ms, period_ms=20, *, repeat=True):
     words[18:24] = [0xE07F, words[3], 6, 16, (time_ms // 100) & 65535, 0]
     words[24:31] = [6, 16, 500, 3500, 2000, 500, 3500]
     words[31:36] = [ramp if started else 0, 2500, 60, 160, round(ramp * 1000 / 2500)]
+    if started:
+        charge = min(1.0, (phase - 1000) / 1500)
+    elif phase >= 5000:
+        charge = max(0.0, 1 - (phase - 5000) / 800)
+    else:
+        charge = 0.0
+    words[40] = round(charge * (600 + 3 * math.sin(phase / 80)))
+    words[41] = round(charge * (590 + 4 * math.sin(phase / 95 + .7)))
     return codec.sample(words)