Solved backlight issues and added backlight control to the API.

Makefile

@@ -50,6 +50,12 @@ obj-std-spec	=
 # Configuration files
 config		= gcc.cfg
 
+ifndef folder
+folder		= /usr/share/fxsdk
+endif
+
+
+
 #---
 #	Automatic variables.
 #---
@@ -206,5 +212,12 @@ distclean: mrproper
 install:
 	p7 send -f $(target-g1a)
 
+install_lib: $(target-std) $(target-lib)
+	mkdir -p $(folder)
+	install -m 644 $^ $(folder)
+	install -m 644 -T demo/gintdemo.ld $(folder)/linker.ld
+	mkdir -p $(folder)/gint
+	install -m 644 include/*.h $(folder)/gint
+	@ printf '\e[32;1mmsg \u00bb\e[0m All installed!\n'
 
-.PHONY: all clean mrproper distclean install help
+.PHONY: all clean mrproper distclean install install_lib help

TODO

@@ -2,7 +2,6 @@ Bugs to fix:
 -  Left-vram overflow when rendering text
 -  A few key hits ignored after leaving the application (could not reproduce)
 -  Lost keyboard control at startup (could not reproduce)
--  Back-light issues (0xa400012c on SH3, 0xa4050138 on SH4)
 
 Simple improvements:
 -  bopti:	Monochrome bitmaps blending modes
@@ -14,6 +13,7 @@ Simple improvements:
 -  timer:	Add duration and frequency settings
 -  core:	Add VBR handlers debugging information (if possible)
 -  core:	Implement all callbacks and a complete user API
+-  project:	Enhance Makefile install_lib rules
 
 Modules to implement:
 -  Serial communication

include/screen.h

@@ -20,4 +20,10 @@
 */
 void screen_display(const void *vram);
 
+/*
+	screen_setBacklight()
+	On compatible models, turns on or turns off the backlight.
+*/
+void screen_setBacklight(int on);
+
 #endif

src/keyboard/keyboard_sh7305.c

@@ -56,8 +56,8 @@ static void kdelay(void)
 
 /*
 	krow()
-	Reads a keyboard row. Works like krow() for SH7705. See gint_7705.c for
-	more details.
+	Reads a keyboard row. Works like krow() for SH7705; see source file
+	keyboard_7705.c for more details.
 */
 static int krow(int row)
 {
@@ -83,9 +83,9 @@ static int krow(int row)
 	*detector	= 0xaaaa;
 	*key_register	= 0xff;
 	*injector1	= (*injector1 & 0xf000) | 0x0555;
-	*injector2	= (*injector2 & 0xf000) | 0x0555;
+	*injector2	= (*injector2 & 0xff00) | 0x0055;
 	*data1		|= 0x3f;
-	*data2		|= 0x3f;
+	*data2		|= 0x0f;
 	kdelay();
 
 	if(row < 6)
@@ -94,11 +94,11 @@ static int krow(int row)
 		cmask = ~(1 << row);
 
 		*injector1 = ((*injector1 & 0xf000) | 0x0aaa) ^ smask;
-		*injector2 =  (*injector2 & 0xf000) | 0x0aaa;
+		*injector2 =  (*injector2 & 0xff00) | 0x00aa;
 		kdelay();
 
-		*data1 = (*data1 & 0xc0) | cmask;
-		*data2 |= 0x3f;
+		*data1 = (*data1 & 0xc0) | (cmask & 0x3f);
+		*data2 |= 0x0f;
 		kdelay();
 	}
 	else
@@ -107,11 +107,11 @@ static int krow(int row)
 		cmask = ~(1 << (row - 6));
 
 		*injector1 =  (*injector1 & 0xf000) | 0x0aaa;
-		*injector2 = ((*injector2 & 0xf000) | 0x0aaa) ^ smask;
+		*injector2 = ((*injector2 & 0xff00) | 0x00aa) ^ smask;
 		kdelay();
 
 		*data1 |= 0x3f;
-		*data2 = (*data2 & 0xc0) | cmask;
+		*data2 = (*data2 & 0xf0) | (cmask & 0x0f);
 		kdelay();
 	}
 
@@ -121,13 +121,13 @@ static int krow(int row)
 
 	// Re-initializing the port configuration and data.
 	*injector1 = (*injector1 & 0xf000) | 0x0aaa;
-	*injector2 = (*injector2 & 0xf000) | 0x0aaa;
+	*injector2 = (*injector2 & 0xff00) | 0x00aa;
 	kdelay();
 	*injector1 = (*injector1 & 0xf000) | 0x0555;
-	*injector2 = (*injector2 & 0xf000) | 0x0555;
+	*injector2 = (*injector2 & 0xff00) | 0x0055;
 	kdelay();
 	*data1 &= 0xc0;
-	*data2 &= 0xc0;
+	*data2 &= 0xf0;
 
 	return result;
 }

src/screen/screen_setBacklight.c

@@ -0,0 +1,22 @@
+#include <screen.h>
+#include <mpu.h>
+
+/*
+	screen_setBacklight()
+	On compatible models, turns on or turns off the backlight.
+*/
+void screen_setBacklight(int on)
+{
+	if(isSH3())
+	{
+		volatile unsigned char *PGDR = (void *)0xa400012c;
+		if(on)	*PGDR |=  0x80;
+		else	*PGDR &= ~0x80;
+	}
+	else
+	{
+		volatile unsigned char *PNDR = (void *)0xa4050138;
+		if(on)	*PNDR |=  0x10;
+		else	*PNDR &= ~0x10;
+	}
+}

src/timer/timer_interrupt.c

@@ -14,15 +14,11 @@ void timer_interrupt(int timer)
 	volatile struct mod_tmu *tmu;
 	timer_get(timer, &tmu, NULL);
 
-	// Resetting the interrupt flag.
 	tmu->TCR.UNF = 0;
-
-	// Calling the callback function.
 	if(timers[timer].callback) timers[timer].callback();
 
 	// Reducing the number of repetitions left, if not infinite.
 	if(!timers[timer].repeats) return;
-	// And stopping it if necessary.
 	if(timers[timer].repeats == 1) timer_stop(timer);
 	else timers[timer].repeats--;
 }