AP_HAL_Linux: AnalogSource: set_pin return true

libraries/AP_HAL_Linux/AnalogIn_ADS1115.cpp

@@ -6,12 +6,13 @@ AnalogSource_ADS1115::AnalogSource_ADS1115(int16_t pin):
 {
 }
 
-void AnalogSource_ADS1115::set_pin(uint8_t pin)
+bool AnalogSource_ADS1115::set_pin(uint8_t pin)
 {
     if (_pin == pin) {
-        return;
+        return true;
     }
     _pin = pin;
+    return true;
 }
 
 float AnalogSource_ADS1115::read_average()

libraries/AP_HAL_Linux/AnalogIn_ADS1115.h

@@ -11,7 +11,7 @@ public:
     AnalogSource_ADS1115(int16_t pin);
     float read_average() override;
     float read_latest() override;
-    void set_pin(uint8_t p) override;
+    bool set_pin(uint8_t p) override;
     float voltage_average() override;
     float voltage_latest() override;
     float voltage_average_ratiometric() override;

libraries/AP_HAL_Linux/AnalogIn_IIO.cpp

@@ -98,10 +98,10 @@ float AnalogSource_IIO::voltage_latest()
     return _latest;
 }
 
-void AnalogSource_IIO::set_pin(uint8_t pin)
+bool AnalogSource_IIO::set_pin(uint8_t pin)
 {
     if (_pin == pin) {
-        return;
+        return true;
     }
 
     WITH_SEMAPHORE(_semaphore);
@@ -112,6 +112,7 @@ void AnalogSource_IIO::set_pin(uint8_t pin)
     _latest = 0;
     _value = 0;
     select_pin();
+    return true;
 }
 
 AnalogIn_IIO::AnalogIn_IIO()

libraries/AP_HAL_Linux/AnalogIn_IIO.h

@@ -27,7 +27,7 @@ public:
     AnalogSource_IIO(int16_t pin, float initial_value, float voltage_scaling);
     float read_average() override;
     float read_latest() override;
-    void set_pin(uint8_t p) override;
+    bool set_pin(uint8_t p) override;
     float voltage_average() override;
     float voltage_latest() override;
     float voltage_average_ratiometric() override { return voltage_average(); }

libraries/AP_HAL_Linux/AnalogIn_Navio2.cpp

@@ -42,15 +42,16 @@ AnalogSource_Navio2::AnalogSource_Navio2(uint8_t pin)
     set_channel(pin);
 }
 
-void AnalogSource_Navio2::set_pin(uint8_t pin)
+bool AnalogSource_Navio2::set_pin(uint8_t pin)
 {
     if (_pin == pin) {
-        return;
+        return true;
     }
 
     set_channel(pin);
 
     _pin = pin;
+    return true;
 }
 
 float AnalogSource_Navio2::read_average()

libraries/AP_HAL_Linux/AnalogIn_Navio2.h

@@ -12,7 +12,7 @@ public:
     AnalogSource_Navio2(uint8_t pin);
     float read_average() override;
     float read_latest() override;
-    void set_pin(uint8_t p) override;
+    bool set_pin(uint8_t p) override;
     float voltage_average() override;
     float voltage_latest() override;
     float voltage_average_ratiometric() override;