New Makefile option to display the limits in us

src/Makefile

@@ -63,7 +63,11 @@ HAPTIC = NO
 # SPLASH on START
 SPLASH = YES
 
-# Decimals display in the main view (PPM calibration, 
+# Limits display in the LIMITS
+# Values = PERCENT, US
+LIMITS = PERCENT
+
+# Decimals display in the main view / PPM calibration, 
 # Values = YES, NO
 DECIMALS = YES
 
@@ -346,6 +350,10 @@ endif
 
 ### Global Build-Option Directives ###
 
+ifeq ($(LIMITS), US)
+  CPPDEFS += -DLIMITS_US
+endif
+
 ifeq ($(DECIMALS), YES)
   CPPDEFS += -DDECIMALS_DISPLAYED
 endif

src/open9x.h

@@ -85,6 +85,8 @@ extern void board_init();
 
 #include "myeeprom.h"
 
+#define PPM_CENTER 1500
+
 #if defined(PCBARM)
 #include "eeprom_arm.h"
 #include "pulses_arm.h"

src/pulses_avr.cpp

@@ -193,8 +193,6 @@ ISR(TIMER1_COMPA_vect) //2MHz pulse generation
 
 #endif
 
-#define PPM_CENTER 1500
-
 FORCEINLINE void setupPulsesPPM()
 {
     int16_t PPM_range = g_model.extendedLimits ? 640*2 : 512*2;   //range of 0.7..1.7msec

src/translations/en.h

@@ -281,6 +281,7 @@
 #define TR_THRTHP       "THR\015TH%"
 #define TR_TOT          "TOT"
 #define TR_TMR1LATMAXUS "Tmr1Lat max\003us"
+#define STR_US (STR_TMR1LATMAXUS+12)
 #define TR_TMR1LATMINUS "Tmr1Lat min\003us"
 #define TR_TMR1JITTERUS "Tmr1 Jitter\003us"
 #define TR_TMAINMAXMS   "Tmain max\005ms"

src/translations/fr.h

@@ -282,6 +282,7 @@
 #define TR_THRTHP       "THR\015TH%"
 #define TR_TOT          "TOT"
 #define TR_TMR1LATMAXUS "Tmr1Lat max\003us"
+#define STR_US (STR_TMR1LATMAXUS+12)
 #define TR_TMR1LATMINUS "Tmr1Lat min\003us"
 #define TR_TMR1JITTERUS "Tmr1 Jitter\003us"
 #define TR_TMAINMAXMS   "Tmain max\005ms"

src/translations/se.h

@@ -281,6 +281,7 @@
 #define TR_THRTHP       "THR\015TH%"
 #define TR_TOT          "TOT"
 #define TR_TMR1LATMAXUS "Tmr1Lat max\003us"
+#define STR_US (STR_TMR1LATMAXUS+12)
 #define TR_TMR1LATMINUS "Tmr1Lat min\003us"
 #define TR_TMR1JITTERUS "Tmr1 Jitter\003us"
 #define TR_TMAINMAXMS   "Tmain max\005ms"