[core] Organize GCC compilation flags

cores/beken-72xx/arduino/libraries/LT/LT.cpp

@@ -169,6 +169,7 @@ bool LibreTuya::otaSwitch(bool force) {
 bool LibreTuya::wdtEnable(uint32_t timeout) {
 	wdt_ctrl(WCMD_SET_PERIOD, &timeout);
 	wdt_ctrl(WCMD_POWER_UP, NULL);
+	return true;
 }
 
 void LibreTuya::wdtDisable() {

cores/beken-72xx/arduino/libraries/WiFi/WiFi.cpp

@@ -36,6 +36,7 @@ WiFiStatus eventTypeToStatus(uint8_t type) {
 		case RW_EVT_STA_DISCONNECTED:
 			return WL_DISCONNECTED;
 	}
+	return WL_IDLE_STATUS;
 }
 
 WiFiAuthMode securityTypeToAuthMode(uint8_t type) {

cores/common/arduino/libraries/common/IPv6Address/IPv6Address.cpp

@@ -54,6 +54,7 @@ size_t IPv6Address::printTo(Print &p) const {
 
 	}
 	return n; */
+	return 0;
 }
 
 String IPv6Address::toString() const {

cores/common/arduino/libraries/common/Update/Update.h

@@ -104,6 +104,7 @@ class UpdateClass {
   public:
 	String md5String(void) {
 		// return _md5.toString();
+		return "";
 	}
 
 	void md5(uint8_t *result) {

cores/common/arduino/libraries/common/WiFiServer/LwIPServer.cpp

@@ -61,6 +61,7 @@ bool LwIPServer::begin(uint16_t port, bool reuseAddr) {
 	_active		  = true;
 	_noDelay	  = false;
 	_sockAccepted = -1;
+	return true;
 }
 
 void LwIPServer::end() {

cores/realtek-amb/arduino/libraries/LT/LT.cpp

@@ -183,6 +183,7 @@ bool LibreTuya::otaSwitch(bool force) {
 bool LibreTuya::wdtEnable(uint32_t timeout) {
 	watchdog_init(timeout);
 	watchdog_start();
+	return true;
 }
 
 void LibreTuya::wdtDisable() {

cores/realtek-amb/arduino/libraries/WiFi/WiFiEvents.cpp

@@ -179,7 +179,7 @@ void handleRtwEvent(uint16_t event, char *data, int len, int flags) {
 			if (len != 124)
 				return;
 			eventId = ARDUINO_EVENT_WIFI_AP_STACONNECTED;
-			memcpy(eventInfo.wifi_ap_staconnected.mac, (const char *)data[10], 6);
+			memcpy(eventInfo.wifi_ap_staconnected.mac, (const char *)data + 10, 6);
 			break;
 
 		case WIFI_EVENT_STA_DISASSOC:

cores/realtek-amb/arduino/libraries/WiFi/WiFiPrivate.h

@@ -35,7 +35,7 @@ extern rtw_wifi_setting_t wifi_setting;
 extern unsigned char sta_password[65];
 extern unsigned char ap_password[65];
 extern void reset_wifi_struct(void);
-extern rtw_mode_t wifi_mode;
+extern wifi_mode_t wifi_mode;
 extern WiFiAuthMode securityTypeToAuthMode(uint8_t type);
 // WiFiEvents.cpp
 extern void startWifiTask();

cores/realtek-amb/arduino/libraries/Wire/Wire.cpp

@@ -103,6 +103,7 @@ bool TwoWire::end() {
 	i2c_reset(_i2c);
 	delete _i2c;
 	_i2c = NULL;
+	return true;
 }
 
 bool TwoWire::setClock(uint32_t freq) {
@@ -110,6 +111,7 @@ bool TwoWire::setClock(uint32_t freq) {
 		i2c_frequency(_i2c, freq);
 	}
 	_freq = freq;
+	return true;
 }
 
 void TwoWire::beginTransmission(uint8_t address) {

cores/realtek-amb/arduino/src/wiring_analog.c

@@ -106,53 +106,3 @@ void analogWrite(pin_size_t pinNumber, int value) {
 		}
 	}
 }
-
-typedef struct _tone_argument {
-	uint32_t ulPin;
-	uint32_t timer_id;
-};
-
-void _tone_timer_handler(const void *argument) {
-	struct _tone_argument *arg = (struct _tone_argument *)argument;
-
-	uint32_t ulPin = (uint32_t)argument;
-
-	noTone(arg->ulPin);
-
-	os_timer_delete(arg->timer_id);
-
-	free((struct _tone_argument *)arg);
-}
-
-void _tone(uint32_t ulPin, unsigned int frequency, unsigned long duration) {
-	pwmout_t *obj;
-
-	if ((pinTable[ulPin].supported & PIN_PWM) != PIN_PWM) {
-		return;
-	}
-
-	if (pinTable[ulPin].enabled != PIN_PWM) {
-		if ((pinTable[ulPin].enabled == PIN_GPIO) || (pinTable[ulPin].enabled == PIN_IRQ)) {
-			pinRemoveMode(ulPin);
-		}
-		gpio_pin_struct[ulPin] = malloc(sizeof(pwmout_t));
-		pwmout_t *obj		   = (pwmout_t *)gpio_pin_struct[ulPin];
-		pwmout_init(obj, pinTable[ulPin].gpio);
-		pwmout_period(obj, 1.0 / frequency);
-		pwmout_pulsewidth(obj, 1.0 / (frequency * 2));
-		pinTable[ulPin].enabled = PIN_PWM;
-
-	} else {
-		// There is already a PWM configured
-		pwmout_t *obj = (pwmout_t *)gpio_pin_struct[ulPin];
-		pwmout_period(obj, 1.0 / frequency);
-		pwmout_pulsewidth(obj, 1.0 / (frequency * 2));
-	}
-
-	if (duration > 0) {
-		struct _tone_argument *arg = (struct _tone_argument *)malloc(sizeof(struct _tone_argument));
-		arg->ulPin				   = ulPin;
-		arg->timer_id			   = os_timer_create(_tone_timer_handler, 0, arg);
-		os_timer_start(arg->timer_id, duration);
-	}
-}

cores/realtek-amb/arduino/src/wiring_digital.c

@@ -13,7 +13,7 @@ void pinRemoveMode(pin_size_t pinNumber) {
 	}
 	if (pinEnabled(pin, PIN_GPIO)) {
 		gpio_t *obj = (gpio_t *)gpio_pin_struct[pinNumber];
-		gpio_deinit(obj, pin->gpio);
+		gpio_deinit(obj);
 		free(obj);
 	}
 	if (pinEnabled(pin, PIN_IRQ)) {
@@ -107,9 +107,9 @@ void digitalWrite(pin_size_t pinNumber, PinStatus status) {
 PinStatus digitalRead(pin_size_t pinNumber) {
 	PinInfo *pin = pinInfo(pinNumber);
 	if (!pin)
-		return;
+		return LOW;
 	if (pin->enabled != PIN_GPIO)
-		return;
+		return LOW;
 
 	gpio_t *gpio = (gpio_t *)gpio_pin_struct[pinNumber];
 	return gpio_read(gpio);

cores/realtek-amb/arduino/src/wiring_irq.c

@@ -18,7 +18,7 @@ static void gpioIrqHandler(uint32_t id, gpio_irq_event event) {
 }
 
 void attachInterrupt(pin_size_t interruptNumber, voidFuncPtr callback, PinStatus mode) {
-	attachInterruptParam(interruptNumber, callback, mode, NULL);
+	attachInterruptParam(interruptNumber, (voidFuncPtrParam)callback, mode, NULL);
 }
 
 void attachInterruptParam(pin_size_t interruptNumber, voidFuncPtrParam callback, PinStatus mode, void *param) {

cores/realtek-amb/base/sdk_private.h

@@ -36,11 +36,13 @@ extern "C" {
 #include <rtl8710c.h>
 #endif
 
+#include <gpio_api.h>
+#undef MBED_GPIO_API_H // ..no comment
+#include <gpio_ex_api.h>
+
 #include <analogin_api.h>
 #include <analogout_api.h>
 #include <flash_api.h>
-#include <gpio_api.h>
-#include <gpio_ex_api.h>
 #include <gpio_irq_api.h>
 #include <gpio_irq_ex_api.h>
 #include <i2c_api.h>

cores/realtek-ambz/base/fixups/cmsis_ipsr.c

@@ -8,4 +8,5 @@ __attribute__((weak)) uint32_t __get_IPSR()
 {
 	uint32_t result;
     asm volatile ("MRS %0, ipsr" : "=r" (result) );
+	return result;
 }