Refactor

driver/backlight.c

@@ -17,6 +17,7 @@
 #include "backlight.h"
 #include "bsp/dp32g030/gpio.h"
 #include "bsp/dp32g030/pwmplus.h"
+#include "bsp/dp32g030/portcon.h"
 #include "driver/gpio.h"
 #include "settings.h"
 
@@ -24,6 +25,33 @@
 uint16_t gBacklightCountdown = 0;
 bool backlightOn;
 
+void BACKLIGHT_InitHardware()
+{
+	// 48MHz / 94 / 1024 ~ 500Hz
+	const uint32_t PWM_FREQUENCY_HZ =  500;
+	PWM_PLUS0_CLKSRC |= ((48000000 / 1024 / PWM_FREQUENCY_HZ) << 16);
+	PWM_PLUS0_PERIOD = 1023;
+
+	PORTCON_PORTB_SEL0 &= ~(0
+		// Back light
+		| PORTCON_PORTB_SEL0_B6_MASK
+		);
+	PORTCON_PORTB_SEL0 |= 0
+		// Back light PWM
+		| PORTCON_PORTB_SEL0_B6_BITS_PWMP0_CH0
+		;
+
+	PWM_PLUS0_GEN = 	
+		PWMPLUS_GEN_CH0_OE_BITS_ENABLE |
+		PWMPLUS_GEN_CH0_OUTINV_BITS_ENABLE |
+		0;
+
+	PWM_PLUS0_CFG =  	
+		PWMPLUS_CFG_CNT_REP_BITS_ENABLE |
+		PWMPLUS_CFG_COUNTER_EN_BITS_ENABLE |
+		0;
+}
+
 void BACKLIGHT_TurnOn(void)
 {
 	if (gEeprom.BACKLIGHT_TIME != 0) {

driver/backlight.h

@@ -23,6 +23,7 @@
 extern uint16_t gBacklightCountdown;
 extern uint8_t gBacklightBrightness;
 
+void BACKLIGHT_InitHardware();
 void BACKLIGHT_TurnOn();
 void BACKLIGHT_TurnOff();
 bool BACKLIGHT_IsOn();