fixes

it2gpio

@@ -1,9 +1,10 @@
 #!/usr/bin/env python3
-import sys, re
+import sys
 
-regs = []
 
 def main():
+    regs = []
+
     for line in sys.stdin:
         line = line.strip()
         parts = line.split(' ')
@@ -12,16 +13,17 @@ def main():
             regs.append(int(val, 16))
 
     if not regs:
-        raise Error("regs is empty")
+        raise Exception("regs is empty")
 
     for k, reg in enumerate(regs):
         for i in range(32):
-            num = (32 * k) + i
-            index = int(num / 32)
-            bit = num % 32
-            status = (reg >> bit) & 1
-            print("GPIO%d = %d" % (num, status))
+            gpio_num = (32 * k) + i
+            if gpio_num > 75:
+                break
+            bit = gpio_num % 32
+            gpio_val = (reg >> bit) & 1
+            print("GPIO%d = %d" % (gpio_num, gpio_val))
+
 
 if __name__ == '__main__':
     main()
-