simpler conditional compilation

SENT-box/firmware/Makefile

@@ -131,6 +131,7 @@ CPPSRC = $(ALLCPPSRC) \
 	can.cpp \
 	uart.cpp \
 	sent.cpp \
+	sent_hw_icu.cpp \
 	sent_hw_pal.cpp \
 
 # List ASM source files here.

SENT-box/firmware/sent_hw_icu.cpp

@@ -11,6 +11,8 @@
 #include "sent.h"
 #include "sent_hw_icu.h"
 
+#if SENT_MODE_ICU
+
 static void icuperiodcb_in1(ICUDriver *icup);
 static void icuperiodcb_in2(ICUDriver *icup);
 #if SENT_DEV == SENT_SILABS_SENS
@@ -70,7 +72,7 @@ static ICUConfig icucfg_in4 =
   0U,
   0xFFFFFFFFU
 };
-#endif
+#endif // SENT_DEV
 
 static void icuperiodcb_in1(ICUDriver *icup)
 {
@@ -123,3 +125,4 @@ void InitSent()
 #endif
 }
 
+#endif // SENT_MODE_ICU

SENT-box/firmware/sent_hw_pal.cpp

@@ -11,6 +11,8 @@
 #include "sent.h"
 #include "sent_hw_pal.h"
 
+#if SENT_MODE_PAL
+
 uint32_t cyccnt_ch1;
 uint32_t cyccnt_ch1_prev = 0;
 uint16_t cyccnt_ch1_period;
@@ -226,3 +228,5 @@ uint8_t SENT_GetTickValue(uint16_t dwt_val)
 #endif
 }
 #pragma GCC pop_options
+
+#endif // SENT_MODE_PAL