DEBUG output to MCU

Firm_Saturn/cdblock.c

@@ -873,6 +873,9 @@ int my_bios_loadcd_read(void)
 	return 0;
 }
 
+extern int to_stm32;
+extern int gets_from_stm32;
+
 int read_1st(void)
 {
 	printk("Read main ...\n");
@@ -882,6 +885,14 @@ int read_1st(void)
 	go();
 
 	patch_game((char*)0x06002020);
+
+	if(game_break_pc){
+		set_break_pc(game_break_pc, 0);
+		install_ubr_isr();
+		to_stm32 = 1;
+		gets_from_stm32 = 1;
+		*(u32*)(0x22820000) = 0;
+	}
 }
 
 

Firm_Saturn/main.c

@@ -87,25 +87,22 @@ int smpc_cmd(int cmd)
 
 /**********************************************************/
 
+
 void stm32_puts(char *str)
 {
 	u32 stm32_base = 0x22820000;
 	int i, len;
 
-	//len = strlen(str);
-	//len += 1;
-	len = 32;
-	*(u16*)(stm32_base+0x00) = len;
+	len = strlen(str);
+	LE32W((void*)(stm32_base+0), len);
 
-	for(i=0; i<len; i+=2)
-		*(u16*)(stm32_base+0x10+i) = *(u16*)(str+i);
+	memcpy((void*)stm32_base+0x10, str, len+1);
 
 	SS_CMD = 0x0001;
-	//while(SS_CMD);
+	while(SS_CMD);
 }
 
 
-
 /**********************************************************/
 
 const int HZ = 1000000;

Firm_Saturn/main.h

@@ -188,6 +188,8 @@ void install_ubr_isr(void);
 void set_break_pc(u32 addr, u32 mask);
 void set_break_rw(u32 addr, u32 mask, int rw);
 
+extern int game_break_pc;
+
 #define BRK_READ  0x04
 #define BRK_WRITE 0x08
 #define BRK_RW    0x0c

Firm_Saturn/printk.c

@@ -257,6 +257,7 @@ int vsnprintf(char *buf, int size, char *fmt, va_list args)
 
 void (*printk_putc)(int ch) = NULL;
 void stm32_puts(char *str);
+int to_stm32 = 0;
 
 
 int printk(char *fmt, ...)
@@ -275,20 +276,20 @@ int printk(char *fmt, ...)
 	printed_len = vsnprintf(printk_buf, sizeof(printk_buf), fmt, args);
 	va_end(args);
 
-
+	if(to_stm32){
+		stm32_puts(printk_buf);
+	}else{
 #if 1
-	for (p = printk_buf; *p; p++) {
-		printk_putc(*p);
+		for (p = printk_buf; *p; p++) {
+			printk_putc(*p);
+		}
+#endif
 	}
-#endif
-
-#if 0
-	stm32_puts(printk_buf);
-#endif
 
 	return printed_len;
 }
 
+
 int snprintf(char *buf, int size, char *fmt, ...)
 {
 	va_list args;

Firm_Saturn/sci_shell.c

@@ -4,6 +4,8 @@
 
 /**********************************************************/
 
+int gets_from_stm32 = 0;
+
 static char hbuf[128];
 static int hblen = 0;
 #define PROMPT "SS"
@@ -12,6 +14,18 @@ int gets(char *buf, int len)
 {
 	int n, ch, esc;
 
+	if(gets_from_stm32){
+		while(1){
+			n = *(volatile u8*)0x22820000;
+			if(n)
+				break;
+		}
+
+		strcpy(buf, (u8*)0x22820010);
+		buf[n] = 0;
+		return n;
+	}
+
 	printk(PROMPT "> ");
 	n = 0;
 	esc = 0;
@@ -309,8 +323,7 @@ void sci_shell(void)
 			u32 addr = 0;
 			if(argc>0) addr = arg[0];
 			if(addr){
-				skip_patch = 1;
-				break_in_game(addr, NULL);
+				game_break_pc = addr;
 			}
 		}
 

Firm_Saturn/ubr_debug.c

@@ -12,8 +12,8 @@ void debug_shell(void *arg);
 
 
 static int auto_break;
-static int game_break_pc;
-static void (*game_break_handle)(REGS *reg);
+int game_break_pc;
+void (*game_break_handle)(REGS *reg);
 
 
 /**********************************************************/

Firm_v12_STM32H750/Main/shell.c

@@ -205,6 +205,13 @@ void simple_shell(void)
 
 	while(1){
 		gets(cmd, 128);
+		if(strncmp(cmd, "ss ", 3)==0){
+			int len = strlen(cmd+3);
+			strcpy((u8*)0x61820010, cmd+3);
+			*(u8*)0x61820000 = len;
+			continue;
+		}
+
 		char *sp = strchr(cmd, ' ');
 		if(sp){
 			*sp = 0;

Firm_v12_STM32H750/Main/uart4.c

@@ -216,8 +216,8 @@ void uart4_init(void)
 	UART4->CR2  = 0;
 	UART4->CR3  = 0x64000000;
 	UART4->BRR  = 0x0;          // Reset
-	UART4->BRR  = 0x0364;       // 设置波特比率寄存器为115200(100M/115200)
-//	UART4->BRR  = 0x0064;       // 设置波特比率寄存器为1M(100M/1M)
+//	UART4->BRR  = 0x0364;       // 设置波特比率寄存器为115200(100M/115200)
+	UART4->BRR  = 0x0064;       // 设置波特比率寄存器为1M(100M/1M)
 	UART4->RQR  = 0x0018;
 	UART4->CR1 |= 0x0001;       // Enable UART4
 

Firm_v12_STM32H750/Saturn/saturn_cdc.c

@@ -804,7 +804,7 @@ int get_subcode(void)
 	}
 
 	type = cdb.cr1&0xff;
-	SSLOG(_INFO, "get_subcode: type=%d\n", type);
+	//SSLOG(_INFO, "get_subcode: type=%d\n", type);
 
 	if(type==0){
 		// Get Q Channel

Firm_v12_STM32H750/Saturn/saturn_main.c

@@ -402,7 +402,7 @@ void ss_cmd_handle(void)
 	int retv;
 	u32 cmd = SS_CMD;
 
-	SSLOG(_INFO, "scmd_task: %04x\n", SS_CMD);
+	//SSLOG(_INFO, "scmd_task: %04x\n", SS_CMD);
 
 	switch(cmd){
 	case SSCMD_PRINTF: