commit d4a64d9e532d9a772f03ddb2a74f999574aeddb3
author Brian Silverman <brians> Wed Dec 25 15:52:59 2013 -0800
committer Brian Silverman <brians> Wed Dec 25 15:52:59 2013 -0800
tree 68fc53ec7d229a318d2570863bfd9e2c3719e058
parent 0b6d9f4f7656c8b4cffb5a6b714258a1cd863a33

got encoder 4 working (in software)

bbb_cape/src/cape/encoder.h

diff --git a/bbb_cape/src/cape/encoder.h b/bbb_cape/src/cape/encoder.h
index c5b0bf0..8e3ef18 100644
--- a/bbb_cape/src/cape/encoder.h
+++ b/bbb_cape/src/cape/encoder.h
@@ -50,8 +50,8 @@
 
 // number is the 0-indexed number on the silkscreen
 static inline int32_t encoder_read(int number) {
-  static int32_t value0, value4, value6, value7;
-  extern volatile int32_t encoder1_value, encoder3_value;
+  static int32_t value0, value6, value7;
+  extern volatile int32_t encoder1_value, encoder3_value, encoder4_value;
   switch (number) {
     case 0:
       counter_update_s32_u16(&value0, TIM8->CNT);
@@ -63,8 +63,7 @@
     case 3:
       return encoder3_value;
     case 4:
-      counter_update_s32_u16(&value4, TIM1->CNT);
-      return value4;
+      return encoder4_value;
     case 5:
       return TIM2->CNT;
     case 6: