Two step switch debouncing

syddo · Apr 20, 2012 · 60be9cd · 60be9cd
1 parent 2bd50de
commit 60be9cd
Showing 1 changed file with 6 additions and 3 deletions.
diff --git a/devices/switch.h b/devices/switch.h
@@ -80,12 +80,11 @@ class DebouncedSwitches {
     memset(state_, 0xff, sizeof(state_));
   }
 
-  static inline T DummyRead() {
+  static inline T ReadRegister() {
     return Register::Read();
   }
 
-  static inline void Read() {
-    T value = Register::Read();
+  static inline void Process(T value) {
     T mask = 1 << (num_inputs - 1);
     for (uint8_t i = 0; i < num_inputs; ++i) {
       state_[i] <<= 1;
@@ -96,6 +95,10 @@ class DebouncedSwitches {
     }
   }
 
+  static inline void Read() {
+    Process(ReadRegister());
+  }
+
   static inline uint8_t lowered(uint8_t index) { return state_[index] == 0x80; }
   static inline uint8_t raised(uint8_t index) { return state_[index] == 0x7f; }
   static inline uint8_t high(uint8_t index) { return state_[index] == 0xff; }