AP_Notify: Remove unneeded init guards

libraries/AP_Notify/Display.cpp

@@ -345,10 +345,8 @@ bool Display::init(void)
     }
 
     if (_driver == nullptr) {
-        _healthy = false;
         return false;
     }
-    _healthy = true;
 
     // update all on display
     update_all();
@@ -359,11 +357,6 @@ bool Display::init(void)
 
 void Display::update()
 {
-    // return immediately if not enabled
-    if (!_healthy) {
-        return;
-    }
-
     // max update frequency 2Hz
     static uint8_t timer = 0;
     if (timer++ < 25) {

libraries/AP_Notify/Display.h

@@ -32,8 +32,6 @@ private:
 
     Display_Backend *_driver;
 
-    bool _healthy;
-
     uint8_t _mstartpos; // ticker shift position
     uint8_t _movedelay; // ticker delay before shifting after new message displayed
     uint8_t _screenpage;

libraries/AP_Notify/RGBLed.cpp

@@ -34,8 +34,7 @@ RGBLed::RGBLed(uint8_t led_off, uint8_t led_bright, uint8_t led_medium, uint8_t
 
 bool RGBLed::init()
 {
-    _healthy = hw_init();
-    return _healthy;
+    return hw_init();
 }
 
 // set_rgb - set color as a combination of red, green and blue values
@@ -56,10 +55,6 @@ void RGBLed::_set_rgb(uint8_t red, uint8_t green, uint8_t blue)
 // set_rgb - set color as a combination of red, green and blue values
 void RGBLed::set_rgb(uint8_t red, uint8_t green, uint8_t blue)
 {
-    // return immediately if not enabled
-    if (!_healthy) {
-        return;
-    }
     if (pNotify->_rgb_led_override) {
         // don't set if in override mode
         return;
@@ -329,10 +324,6 @@ void RGBLed::update_colours(void)
 // at 50Hz
 void RGBLed::update()
 {
-    // return immediately if not enabled
-    if (!_healthy) {
-        return;
-    }
     if (!pNotify->_rgb_led_override) {
         update_colours();
         set_rgb(_red_des, _green_des, _blue_des);

libraries/AP_Notify/RGBLed.h

@@ -29,9 +29,6 @@ public:
     // init - initialised the LED
     virtual bool init(void);
 
-    // healthy - returns true if the LED is operating properly
-    virtual bool healthy() { return _healthy; }
-
     // set_rgb - set color as a combination of red, green and blue levels from 0 ~ 15
     virtual void set_rgb(uint8_t red, uint8_t green, uint8_t blue);
 
@@ -55,7 +52,6 @@ protected:
     // meta-data common to all hw devices
     uint8_t counter;
     uint8_t step;
-    bool _healthy;                               // true if the LED is operating properly
     uint8_t _red_des, _green_des, _blue_des;     // color requested by timed update
     uint8_t _red_curr, _green_curr, _blue_curr;  // current colours displayed by the led
     uint8_t _led_off;

libraries/AP_Notify/ToneAlarm_ChibiOS.cpp

@@ -28,7 +28,7 @@ extern const AP_HAL::HAL& hal;
 bool ToneAlarm_ChibiOS::init()
 {
     // open the tone alarm device
-    _initialized = hal.util->toneAlarm_init();
+    bool _initialized = hal.util->toneAlarm_init();
     if (!_initialized) {
         hal.console->printf("AP_Notify: Failed to initialise ToneAlarm");
         return false;
@@ -52,11 +52,6 @@ bool ToneAlarm_ChibiOS::play_tune(uint8_t tune_number)
 // update - updates led according to timed_updated.  Should be called at 50Hz
 void ToneAlarm_ChibiOS::update()
 {
-    // exit immediately if we haven't initialised successfully
-    if (!_initialized) {
-        return;
-    }
-
     // exit if buzzer is not enabled
     if (pNotify->buzzer_enabled() == false) {
         return;

libraries/AP_Notify/ToneAlarm_ChibiOS.h

@@ -32,8 +32,6 @@ private:
     /// play_tune - play one of the pre-defined tunes
     bool play_tune(uint8_t tune_number);
 
-    bool _initialized = false;
-
     /// tonealarm_type - bitmask of states we track
     struct tonealarm_type {
         bool armed              : 1;    // false = disarmed, true = armed

libraries/AP_Notify/ToneAlarm_Linux.cpp

@@ -37,7 +37,7 @@ extern const AP_HAL::HAL& hal;
 bool ToneAlarm_Linux::init()
 {
     // open the tone alarm device
-    _initialized = hal.util->toneAlarm_init();
+    bool _initialized = hal.util->toneAlarm_init();
     if (!_initialized) {
         hal.console->printf("AP_Notify: Failed to initialise ToneAlarm");
         return false;
@@ -61,11 +61,6 @@ bool ToneAlarm_Linux::play_tune(uint8_t tune_number)
 // update - updates led according to timed_updated.  Should be called at 50Hz
 void ToneAlarm_Linux::update()
 {
-    // exit immediately if we haven't initialised successfully
-    if (!_initialized) {
-        return;
-    }
-
     // exit if buzzer is not enabled
     if (pNotify->buzzer_enabled() == false) {
         return;

libraries/AP_Notify/ToneAlarm_PX4.cpp

@@ -155,11 +155,6 @@ void ToneAlarm_PX4::check_cont_tone() {
 // update - updates led according to timed_updated.  Should be called at 50Hz
 void ToneAlarm_PX4::update()
 {
-    // exit immediately if we haven't initialised successfully
-    if (_tonealarm_fd == -1) {
-        return;
-    }
-
     // exit if buzzer is not enabled
     if (pNotify->buzzer_enabled() == false) {
         return;

libraries/AP_Notify/examples/ToshibaLED_test/ToshibaLED_test.cpp

@@ -17,10 +17,7 @@ void setup(void)
     hal.console->printf("Toshiba LED test ver 0.1\n");
 
     // initialise LED
-    toshiba_led.init();
-
-    // check if healthy
-    if (!toshiba_led.healthy()) {
+    if (toshiba_led.init()) {
         hal.console->printf("Failed to initialise Toshiba LED\n");
     }