CF/BF - First cut of allow building of the OSD SLAVE board without all

the flight controller code.

Likely the dependencies can be further improved.  This is a
minimal-impact solution while there are a lot of other Betaflight PR's
still pending.

src/main/fc/config.c

@@ -35,7 +35,6 @@
 #include "common/maths.h"
 
 #include "config/config_eeprom.h"
-#include "config/config_profile.h"
 #include "config/feature.h"
 #include "config/parameter_group.h"
 #include "config/parameter_group_ids.h"
@@ -67,6 +66,7 @@
 #include "fc/rc_controls.h"
 #include "fc/runtime_config.h"
 
+#ifdef USE_FC
 #include "flight/altitude.h"
 #include "flight/failsafe.h"
 #include "flight/imu.h"
@@ -74,6 +74,7 @@
 #include "flight/navigation.h"
 #include "flight/pid.h"
 #include "flight/servos.h"
+#endif
 
 #include "io/beeper.h"
 #include "io/gimbal.h"
@@ -98,7 +99,9 @@
 
 #include "telemetry/telemetry.h"
 
+#ifdef USE_FC
 pidProfile_t *currentPidProfile;
+#endif
 
 #ifndef DEFAULT_FEATURES
 #define DEFAULT_FEATURES 0
@@ -118,13 +121,22 @@ PG_RESET_TEMPLATE(featureConfig_t, featureConfig,
 
 PG_REGISTER_WITH_RESET_TEMPLATE(systemConfig_t, systemConfig, PG_SYSTEM_CONFIG, 0);
 
+#ifdef USE_FC
 PG_RESET_TEMPLATE(systemConfig_t, systemConfig,
     .pidProfileIndex = 0,
     .activeRateProfile = 0,
     .debug_mode = DEBUG_MODE,
     .task_statistics = true,
-    .name = { 0 }
+    .name = { 0 } // FIXME misplaced, see PG_PILOT_CONFIG in CF v1.x
 );
+#endif
+
+#ifdef USE_OSD_SLAVE
+PG_RESET_TEMPLATE(systemConfig_t, systemConfig,
+    .debug_mode = DEBUG_MODE,
+    .task_statistics = true
+);
+#endif
 
 #ifdef BEEPER
 PG_REGISTER(beeperConfig_t, beeperConfig, PG_BEEPER_CONFIG, 0);
@@ -447,6 +459,7 @@ void pgResetFn_statusLedConfig(statusLedConfig_t *statusLedConfig)
     ;
 }
 
+#ifdef USE_FC
 uint8_t getCurrentPidProfileIndex(void)
 {
     return systemConfig()->pidProfileIndex;
@@ -470,6 +483,7 @@ uint16_t getCurrentMinthrottle(void)
 {
     return motorConfig()->minthrottle;
 }
+#endif
 
 void resetConfigs(void)
 {
@@ -481,8 +495,10 @@ void resetConfigs(void)
 
     pgActivateProfile(0);
 
+#ifdef USE_FC
     setPidProfile(0);
     setControlRateProfile(0);
+#endif
 
 #ifdef LED_STRIP
     reevaluateLedConfig();
@@ -491,6 +507,7 @@ void resetConfigs(void)
 
 void activateConfig(void)
 {
+#ifdef USE_FC
     generateThrottleCurve();
 
     resetAdjustmentStates();
@@ -509,10 +526,12 @@ void activateConfig(void)
     imuConfigure(throttleCorrectionConfig()->throttle_correction_angle);
 
     configureAltitudeHold(currentPidProfile);
+#endif
 }
 
 void validateAndFixConfig(void)
 {
+#ifdef USE_FC
     if((motorConfig()->dev.motorPwmProtocol == PWM_TYPE_BRUSHED) && (motorConfig()->mincommand < 1000)){
         motorConfigMutable()->mincommand = 1000;
     }
@@ -571,22 +590,24 @@ void validateAndFixConfig(void)
     }
 #endif
 
-    if (!isSerialConfigValid(serialConfig())) {
-        pgResetFn_serialConfig(serialConfigMutable());
-    }
-
     // Prevent invalid notch cutoff
     if (currentPidProfile->dterm_notch_cutoff >= currentPidProfile->dterm_notch_hz) {
         currentPidProfile->dterm_notch_hz = 0;
     }
 
     validateAndFixGyroConfig();
+#endif
+
+    if (!isSerialConfigValid(serialConfig())) {
+        pgResetFn_serialConfig(serialConfigMutable());
+    }
 
 #if defined(TARGET_VALIDATECONFIG)
     targetValidateConfiguration();
 #endif
 }
 
+#ifdef USE_FC
 void validateAndFixGyroConfig(void)
 {
     // Prevent invalid notch cutoff
@@ -662,16 +683,19 @@ void validateAndFixGyroConfig(void)
             motorConfigMutable()->dev.motorPwmRate = maxEscRate;
     }
 }
+#endif
 
 void readEEPROM(void)
 {
+#ifdef USE_FC
     suspendRxSignal();
+#endif
 
     // Sanity check, read flash
     if (!loadEEPROM()) {
         failureMode(FAILURE_INVALID_EEPROM_CONTENTS);
     }
-
+#ifdef USE_FC
     if (systemConfig()->activeRateProfile >= CONTROL_RATE_PROFILE_COUNT) {// sanity check
         systemConfigMutable()->activeRateProfile = 0;
     }
@@ -681,20 +705,27 @@ void readEEPROM(void)
         systemConfigMutable()->pidProfileIndex = 0;
     }
     setPidProfile(systemConfig()->pidProfileIndex);
+#endif
 
     validateAndFixConfig();
     activateConfig();
 
+#ifdef USE_FC
     resumeRxSignal();
+#endif
 }
 
 void writeEEPROM(void)
 {
+#ifdef USE_FC
     suspendRxSignal();
+#endif
 
     writeConfigToEEPROM();
 
+#ifdef USE_FC
     resumeRxSignal();
+#endif
 }
 
 void resetEEPROM(void)
@@ -718,6 +749,7 @@ void saveConfigAndNotify(void)
     beeperConfirmationBeeps(1);
 }
 
+#ifdef USE_FC
 void changePidProfile(uint8_t pidProfileIndex)
 {
     if (pidProfileIndex >= MAX_PROFILE_COUNT) {
@@ -727,6 +759,7 @@ void changePidProfile(uint8_t pidProfileIndex)
     currentPidProfile = pidProfilesMutable(pidProfileIndex);
     beeperConfirmationBeeps(pidProfileIndex + 1);
 }
+#endif
 
 void beeperOffSet(uint32_t mask)
 {