misc: change compiler flags to save space, fix some code warnings

Author: Bricky

Makefile

@@ -5,25 +5,25 @@ MOTO_STARTUP_TONE		?= 1
 ENABLE_AM_FIX			?= 1
 ENABLE_ALT_SQUELCH		?= 1
 ENABLE_STATUS_BAR_LINE		?= 0
-ENABLE_NOAA			?= 1
+ENABLE_NOAA			?= 0
 ENABLE_RX_BAR			?= 1
 ENABLE_TX_BAR			?= 1
 ENABLE_SLOWER_RSSI_TIMER	?= 1
-ENABLE_SPECTRUM			?= 1
-ENABLE_KEEP_MONITOR_MODE_UP_DN	?= 0
-PCB_VER_2_1			?= 0
+ENABLE_SPECTRUM			?= 0
+ENABLE_KEEP_MONITOR_MODE_UP_DN	?= 1
+PCB_VER_2_1			?= 1
 
 
 # Spectrum presets - 1.4 kB
-ENABLE_SPECTRUM_PRESETS		?= 1
+ENABLE_SPECTRUM_PRESETS		?= 0
 # FM radio = 2.6 kB
 ENABLE_FM_RADIO			?= 1
 # Register Editor = .5 kB
 ENABLE_REGISTER_EDIT		?= 0
 # Scanlist membership display - 252 B
-ENABLE_SCANLIST_DISPLAY		?= 1
+ENABLE_SCANLIST_DISPLAY		?= 0
 # Space saving options
-ENABLE_LTO			?= 0
+ENABLE_LTO			?= 1
 ENABLE_OPTIMIZED		?= 1
 
 
@@ -166,7 +166,8 @@ GIT_HASH := $(GIT_HASH_TMP)
 endif
 
 ASFLAGS = -mcpu=cortex-m4
-CFLAGS = -Os -Wall -Werror -mcpu=cortex-m4 -fno-builtin -fshort-enums -fno-delete-null-pointer-checks -std=c2x -MMD
+CFLAGS = -Os -Wall -Werror -mcpu=cortex-m4 -pipe -free -freorder-blocks-algorithm=stc -std=c2x -MMD
+#CFLAGS += -Wextra
 CFLAGS += -DAT32F421C8T7
 CFLAGS += -DPRINTF_INCLUDE_CONFIG_H
 CFLAGS += -DGIT_HASH=\"$(GIT_HASH)\"
@@ -176,12 +177,9 @@ ifeq ($(ENABLE_OPTIMIZED),1)
 CFLAGS += --specs=nano.specs
 LDFLAGS += --specs=nano.specs
 
+# Only takes effect when LTO is disabled
 CFLAGS += -ffunction-sections
 LDFLAGS += -Wl,--gc-sections
-
-CFLAGS += -finline-limit=0
-
-CFLAGS += -fmerge-all-constants
 endif
 
 ifeq ($(DEBUG),1)

app/menu.c

@@ -601,7 +601,7 @@ void MENU_AcceptSetting(void)
 			for (i = 0; i < 8; i++) {
 				gSettingGolay = (gSettingGolay * 10) + (gInputBox[i] - '0');
 			}
-			if (gSettingGolay < 0x1000000) {
+			if (gSettingGolay != 0) {
 				return;
 			}
 			// Illegal code

app/radio.c

@@ -323,6 +323,9 @@ void RADIO_EndRX(void)
 		switch (gExtendedSettings.ScanResume) {
 			case 1:		// Carrier Operated
 				SCANNER_Countdown = 3000;
+				// Implicit fallthrough
+				gpio_bits_reset(GPIOA, BOARD_GPIOA_LED_GREEN);
+				break;
 			case 2:		// Time Operated
 				gpio_bits_reset(GPIOA, BOARD_GPIOA_LED_GREEN);
 				break;

driver/pwm.c

@@ -44,7 +44,7 @@ void PWM_Pulse(uint16_t Data)
 
 	tmr_para_init_ex1(&init);
 	init.ch1_output_control_mode = TMR_OUTPUT_CONTROL_PWM_MODE_A;
-	init.ch1_polarity = TMR_POLARITY_ACTIVE_HIGH;
+	init.ch1_polarity = (tmr_output_polarity_type)TMR_POLARITY_ACTIVE_HIGH;
 	init.ch1_enable = TRUE;
 	init.ch1_digital_filter = Data;
 	tmr_reset_ex1(TMR3, &init);

helper/dtmf.c

@@ -43,7 +43,7 @@ static void Init(void)
 	};
 
 
-	for (int i = 0; i < ARRAY_SIZE(init_0x9_values); i++) {
+	for (unsigned int i = 0; i < ARRAY_SIZE(init_0x9_values); i++) {
 		BK4819_WriteRegister(0x09, init_0x9_values[i]);
 	}
 

ui/font.c

@@ -64,7 +64,7 @@ static uint8_t LoadAndDraw(uint8_t X, uint8_t Y, uint32_t Offset)
 	}
 }
 
-void FONT_Draw(uint8_t X, uint8_t Y, const uint32_t *pOffsets, uint32_t Count)
+void FONT_Draw(uint8_t X, uint8_t Y, uint32_t Count)
 {
 	uint8_t i, x;
 

ui/font.h

@@ -20,7 +20,7 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-void FONT_Draw(uint8_t X, uint8_t Y, const uint32_t *pOffsets, uint32_t Count);
+void FONT_Draw(uint8_t X, uint8_t Y, uint32_t Count);
 uint8_t FONT_GetOffsets(const char *String, uint8_t Size, bool bFlag);
 
 #endif

ui/helper.c

@@ -226,7 +226,7 @@ static const uint8_t BitmapRadar[] = {
 
 void UI_DrawString(uint8_t X, uint8_t Y, const char *pString, uint8_t Size)
 {
-	FONT_Draw(X, Y, SFLASH_FontOffsets, FONT_GetOffsets(pString, Size, true));
+	FONT_Draw(X, Y, FONT_GetOffsets(pString, Size, true));
 }
 
 void UI_DrawSmallCharacter(uint8_t X, uint8_t Y, char Digit)
@@ -714,7 +714,7 @@ void UI_DrawDTMF(void)
 
 void UI_DrawFMFrequency(uint16_t Frequency)
 {
-	Int2Ascii(gSettings.FmFrequency, 4);
+	Int2Ascii(Frequency, 4);
 	gShortString[4] = gShortString[3];
 	gShortString[3] = '.';
 	gColorForeground = COLOR_BLUE;
@@ -963,11 +963,12 @@ void UI_DrawGolay(void)
 	for (i = 0; i < 8; i++) {
 		gSettingGolay = (gSettingGolay * 10) + (gInputBox[i] - '0');
 	}
-	if (gSettingGolay > 0xFFFFFF) {
-		gSettingGolay &= 0xFFFFFF;
-		Int2Ascii(gSettingGolay, 8);
-		UI_DrawString(24, 24, gShortString, 8);
+	if (gSettingGolay != 0) {
+		return;
 	}
+	gSettingGolay &= 0xFFFFFF;
+	Int2Ascii(gSettingGolay, 8);
+	UI_DrawString(24, 24, gShortString, 8);
 }
 
 void UI_DrawChannelNumber(const char *pString)