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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+def get_value(r1, r2, vin):
+ va = r2 * vin /(r2 + r1)
+ print("Va: ", va)
+ value = int((va * 1023) / vin)
+
+ if value == 0:
+ return 0, 0
+ realr1 = r2 * ((1023. / value) - 1)
+ return value, int(realr1)
+
+if __name__ == "__main__":
+
+ vin = float(input("vin? "))
+ r2 = int(input("r2? "))
+ while True:
+ r1 = int(input("r1? "))
+ value, realr1 = get_value(r1, r2, vin)
+ i = vin / (r1 + r2)
+ print(value, realr1, i)
+
+