Adds a counter for DCC signal transitions. (#458)

bakerstu · Oct 31, 2020 · b58eec9 · b58eec9
1 parent 60dcdb0
commit b58eec9
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/boards/bracz-railcom/HwInit.cxx b/boards/bracz-railcom/HwInit.cxx
@@ -107,7 +107,7 @@ const uint32_t RailcomDefs::UART_PERIPH[] = RAILCOM_PERIPH;
 TivaDAC<DACDefs> dac;
 TivaGNDControl gnd_control;
 TivaBypassControl bypass_control;
-
+unsigned DCCDecode::sampleCount_ = 0;
 uint8_t RailcomDefs::feedbackChannel_ = 0xff;
 uint8_t dac_next_packet_mode = 0;
 

diff --git a/boards/bracz-railcom/hardware.hxx b/boards/bracz-railcom/hardware.hxx
@@ -448,8 +448,6 @@ struct DCCDecode
       HWREG(TIMER_BASE + TIMER_O_TAMR) |= (TIMER_TAMR_TAMIE);
     }
 
-    static void cap_event_hook() {}
-
     static const auto RCOM_TIMER = TIMER_A;
     static const auto SAMPLE_PERIOD_CLOCKS = 60000;
     //static const auto SAMPLE_TIMER_TIMEOUT = TIMER_TIMA_TIMEOUT;
@@ -470,6 +468,10 @@ struct DCCDecode
     static inline void dcc_before_cutout_hook();
     static inline void dcc_packet_finished_hook();
     static inline void after_feedback_hook();
+
+    /// counts how many edges / transitions we had on the DCC signal.
+    static unsigned sampleCount_;
+    static inline void cap_event_hook() { ++sampleCount_; }
 };
 
 #endif // ! pindefs_only