Add xprintf(xitoa) from elm-chan.org

10 files changed, 789 insertions, 222 deletions

diff --git a/common.mk b/common.mk
index 810f802c6..5f47e5c1b 100644
--- a/common.mk
+++ b/common.mk
@@ -11,6 +11,7 @@ SRC +=	$(COMMON_DIR)/host.c \
 	$(COMMON_DIR)/print.c \
 	$(COMMON_DIR)/bootloader.c \
 	$(COMMON_DIR)/suspend.c \
+	$(COMMON_DIR)/xprintf.S \
 	$(COMMON_DIR)/util.c
 
 
diff --git a/common/debug.h b/common/debug.h
index cac682703..8aaa5ed91 100644
--- a/common/debug.h
+++ b/common/debug.h
@@ -18,14 +18,20 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifndef DEBUG_H
 #define DEBUG_H 1
 
-#include <stdbool.h>
 #include "print.h"
+#include "debug_config.h"
 
 
 #ifndef NO_DEBUG
 
+#define dprint(s)           do { if (debug_enable) print(s); } while (0)
+#define dprintln()          do { if (debug_enable) print_crlf(); } while (0)
+#define dprintf(fmt, ...)   do { if (debug_enable) __xprintf(PSTR(fmt), ##__VA_ARGS__); } while (0)
+#define dmsg(s)             dprintf("%s at %s: %S\n", __FILE__, __LINE__, PSTR(s))
+
+/* DO NOT USE these anymore */
 #define debug(s)                  do { if (debug_enable) print(s); } while (0)
-#define debugln(s)                do { if (debug_enable) println(s); } while (0)
+#define debugln(s)                do { if (debug_enable) print_crlf(); } while (0)
 #define debug_S(s)                do { if (debug_enable) print_S(s); } while (0)
 #define debug_P(s)                do { if (debug_enable) print_P(s); } while (0)
 #define debug_msg(s)              do { \
@@ -50,58 +56,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define debug_bin_reverse(data)   debug_bin8(data)
 
 #else
-
-#define debug(s)
-#define debugln(s)
-#define debug_S(s)
-#define debug_P(s)
-#define debug_msg(s)
-#define debug_dec(data)
-#define debug_decs(data)
-#define debug_hex4(data)
-#define debug_hex8(data)
-#define debug_hex16(data)
-#define debug_hex32(data)
-#define debug_bin8(data)
-#define debug_bin16(data)
-#define debug_bin32(data)
-#define debug_bin_reverse8(data)
-#define debug_bin_reverse16(data)
-#define debug_bin_reverse32(data)
-#define debug_hex(data)
-#define debug_bin(data)
-#define debug_bin_reverse(data)
-
-#endif
-
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* NOTE: Not portable. Bit field order depends on implementation */
-typedef union {
-    uint8_t raw;
-    struct {
-        bool enable:1;
-        bool matrix:1;
-        bool keyboard:1;
-        bool mouse:1;
-        uint8_t reserved:4;
-    };
-} debug_config_t;
-debug_config_t debug_config;
-
-/* for backward compatibility */
-#define debug_enable    (debug_config.enable)
-#define debug_matrix    (debug_config.matrix)
-#define debug_keyboard  (debug_config.keyboard)
-#define debug_mouse     (debug_config.mouse)
-
-
-#ifdef __cplusplus
-}
+#include "nodebug.h"
 #endif
 
 #endif
diff --git a/common/debug_config.h b/common/debug_config.h
new file mode 100644
index 000000000..e00fd1033
--- /dev/null
+++ b/common/debug_config.h
@@ -0,0 +1,51 @@
+/*
+Copyright 2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef DEBUG_CONFIG_H
+#define DEBUG_CONFIG_H 1
+
+#include <stdbool.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* NOTE: Not portable. Bit field order depends on implementation */
+typedef union {
+    uint8_t raw;
+    struct {
+        bool enable:1;
+        bool matrix:1;
+        bool keyboard:1;
+        bool mouse:1;
+        uint8_t reserved:4;
+    };
+} debug_config_t;
+debug_config_t debug_config;
+
+/* for backward compatibility */
+#define debug_enable    (debug_config.enable)
+#define debug_matrix    (debug_config.matrix)
+#define debug_keyboard  (debug_config.keyboard)
+#define debug_mouse     (debug_config.mouse)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/common/nodebug.h b/common/nodebug.h
new file mode 100644
index 000000000..aec790bbc
--- /dev/null
+++ b/common/nodebug.h
@@ -0,0 +1,49 @@
+/*
+Copyright 2013 Jun Wako <wakojun@gmail.com>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef NODEBUG_H
+#define NODEBUG_H 1
+
+#include "debug_config.h"
+
+#define dprint(s)
+#define dprintln(s)
+#define dprintf(fmt, ...)
+#define dmsg(s)
+
+#define debug(s)
+#define debugln(s)
+#define debug_S(s)
+#define debug_P(s)
+#define debug_msg(s)
+#define debug_dec(data)
+#define debug_decs(data)
+#define debug_hex4(data)
+#define debug_hex8(data)
+#define debug_hex16(data)
+#define debug_hex32(data)
+#define debug_bin8(data)
+#define debug_bin16(data)
+#define debug_bin32(data)
+#define debug_bin_reverse8(data)
+#define debug_bin_reverse16(data)
+#define debug_bin_reverse32(data)
+#define debug_hex(data)
+#define debug_bin(data)
+#define debug_bin_reverse(data)
+
+#endif
diff --git a/common/print.c b/common/print.c
index 329f83512..783bb4e9b 100644
--- a/common/print.c
+++ b/common/print.c
@@ -1,4 +1,4 @@
-/* Copyright 2012 Jun Wako <wakojun@gmail.com> */
+/* Copyright 2012,2013 Jun Wako <wakojun@gmail.com> */
 /* Very basic print functions, intended to be used with usb_debug_only.c
  * http://www.pjrc.com/teensy/
  * Copyright (c) 2008 PJRC.COM, LLC
@@ -29,20 +29,14 @@
 
 #ifndef NO_PRINT
 
-#define sendchar(c)    do { if (print_sendchar_func) (print_sendchar_func)(c); } while (0)
+#define sendchar(c)    xputc(c)
 
 
-static int8_t (*print_sendchar_func)(uint8_t) = 0;
-
 void print_set_sendchar(int8_t (*sendchar_func)(uint8_t))
 {
-    print_sendchar_func = sendchar_func;
+    xdev_out(sendchar_func);
 }
 
-/* print string stored in data memory(SRAM)
- *     print_P("hello world");
- * This consumes precious SRAM memory space for string.
- */
 void print_S(const char *s)
 {
     uint8_t c;
@@ -54,140 +48,15 @@ void print_S(const char *s)
     }
 }
 
-/* print string stored in program memory(FLASH)
- *     print_P(PSTR("hello world");
- * This consumes relatively abundant FLASH memory area not SRAM.
- */
-void print_P(const char *s)
-{
-    uint8_t c;
-    while (1) {
-        c = pgm_read_byte(s++);
-        if (!c) break;
-        if (c == '\n') sendchar('\r');
-        sendchar(c);
-    }
-}
-
-void print_CRLF(void)
-{
-    sendchar('\r'); sendchar('\n');
-}
-
-
-#define SIGNED  0x80
-#define BIN     2
-#define OCT     8
-#define DEC     10
-#define HEX     16
-
-static inline
-char itoc(uint8_t i)
-{
-    return (i < 10 ? '0' + i : 'A' + i - 10);
-}
-
-static inline
-void print_int(uint16_t data, uint8_t base)
-{
-    char buf[7] = {'\0'};
-    char *p = &buf[6];
-    if ((base & SIGNED) && (data & 0x8000)) {
-        data = -data;
-        buf[0] = '-';
-    }
-    base &= ~SIGNED;
-    uint16_t n;
-    do {
-        n = data;
-        data /= base;
-        *(--p) = itoc(n - data*base);
-    } while (data);
-    if (buf[0]) *(--p) = buf[0];
-    print_S(p);
-}
-
-void print_dec(uint16_t data)
-{
-    print_int(data, DEC);
-}
-
-void print_decs(int16_t data)
-{
-    print_int(data, DEC|SIGNED);
-}
-
-
-void print_hex4(uint8_t data)
-{
-    sendchar(data + ((data < 10) ? '0' : 'A' - 10));
-}
-
-void print_hex8(uint8_t data)
-{
-    print_hex4(data>>4);
-    print_hex4(data&0x0F);
-}
-
-void print_hex16(uint16_t data)
-{
-    print_hex8(data>>8);
-    print_hex8(data);
-}
-
-void print_hex32(uint32_t data)
-{
-    print_hex16(data>>16);
-    print_hex16(data);
-}
-
-void print_bin4(uint8_t data)
-{
-    for (int i = 4; i >= 0; i--) {
-        sendchar((data & (1<<i)) ? '1' : '0');
-    }
-}
-
-void print_bin8(uint8_t data)
-{
-    for (int i = 7; i >= 0; i--) {
-        sendchar((data & (1<<i)) ? '1' : '0');
-    }
-}
-
-void print_bin16(uint16_t data)
-{
-    print_bin8(data>>8);
-    print_bin8(data);
-}
-
-void print_bin32(uint32_t data)
-{
-    print_bin8(data>>24);
-    print_bin8(data>>16);
-    print_bin8(data>>8);
-    print_bin8(data);
-}
-
-void print_bin_reverse8(uint8_t data)
-{
-    for (int i = 0; i < 8; i++) {
-        sendchar((data & (1<<i)) ? '1' : '0');
-    }
-}
-
-void print_bin_reverse16(uint16_t data)
+void print_lf(void)
 {
-    print_bin_reverse8(data);
-    print_bin_reverse8(data>>8);
+    sendchar('\n');
 }
 
-void print_bin_reverse32(uint32_t data)
+void print_crlf(void)
 {
-    print_bin_reverse8(data);
-    print_bin_reverse8(data>>8);
-    print_bin_reverse8(data>>16);
-    print_bin_reverse8(data>>24);
+    sendchar('\r');
+    sendchar('\n');
 }
 
 #endif
diff --git a/common/print.h b/common/print.h
index 80858b3bc..930e84be9 100644
--- a/common/print.h
+++ b/common/print.h
@@ -28,6 +28,8 @@
 #include <stdint.h>
 #include <stdbool.h>
 #include <avr/pgmspace.h>
+#include "xprintf.h"
+#include "util.h"
 
 
 // this macro allows you to write print("some text") and
@@ -49,17 +51,17 @@
 #define pbin_reverse16(data)    print_bin_reverse16(data)
 
 /* print value utility */
-#define print_val_dec(v)           do { print_P(PSTR(#v ": ")); print_dec(v);  print_P(PSTR("\n")); } while (0)
-#define print_val_decs(v)          do { print_P(PSTR(#v ": ")); print_decs(v);  print_P(PSTR("\n")); } while (0)
-#define print_val_hex8(v)          do { print_P(PSTR(#v ": ")); print_hex8(v);  print_P(PSTR("\n")); } while (0)
-#define print_val_hex16(v)         do { print_P(PSTR(#v ": ")); print_hex16(v); print_P(PSTR("\n")); } while (0)
-#define print_val_hex32(v)         do { print_P(PSTR(#v ": ")); print_hex32(v); print_P(PSTR("\n")); } while (0)
-#define print_val_bin8(v)          do { print_P(PSTR(#v ": ")); print_bin8(v);  print_P(PSTR("\n")); } while (0)
-#define print_val_bin16(v)         do { print_P(PSTR(#v ": ")); print_bin16(v); print_P(PSTR("\n")); } while (0)
-#define print_val_bin32(v)         do { print_P(PSTR(#v ": ")); print_bin32(v); print_P(PSTR("\n")); } while (0)
-#define print_val_bin_reverse8(v)  do { print_P(PSTR(#v ": ")); print_bin_reverse8(v);  print_P(PSTR("\n")); } while (0)
-#define print_val_bin_reverse16(v) do { print_P(PSTR(#v ": ")); print_bin_reverse16(v); print_P(PSTR("\n")); } while (0)
-#define print_val_bin_reverse32(v) do { print_P(PSTR(#v ": ")); print_bin_reverse32(v); print_P(PSTR("\n")); } while (0)
+#define print_val_dec(v)           xprintf(#v ": %u\n", v)
+#define print_val_decs(v)          xprintf(#v ": %d\n", v)
+#define print_val_hex8(v)          xprintf(#v ": %X\n", v)
+#define print_val_hex16(v)         xprintf(#v ": %02X\n", v)
+#define print_val_hex32(v)         xprintf(#v ": %04lX\n", v)
+#define print_val_bin8(v)          xprintf(#v ": %08b\n", v)
+#define print_val_bin16(v)         xprintf(#v ": %016b\n", v)
+#define print_val_bin32(v)         xprintf(#v ": %032lb\n", v)
+#define print_val_bin_reverse8(v)  xprintf(#v ": %08b\n", bitrev(v))
+#define print_val_bin_reverse16(v) xprintf(#v ": %016b\n", bitrev16(v))
+#define print_val_bin_reverse32(v) xprintf(#v ": %032lb\n", bitrev32(v))
 
 
 
@@ -68,34 +70,46 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+
 /* function pointer of sendchar to be used by print utility */
 void print_set_sendchar(int8_t (*print_sendchar_func)(uint8_t));
 
-/* print string stored in data memory(SRAM) */
+/* print string stored in data memory(SRAM)
+ *     print_S("hello world");
+ * This consumes precious SRAM memory space for string.
+ */
 void print_S(const char *s);
-/* print string stored in program memory(FLASH) */
-void print_P(const char *s);
 
-void print_CRLF(void);
+void print_lf(void);
+void print_crlf(void);
+
+
+/* print string stored in program memory(FLASH)
+ *     print_P(PSTR("hello world");
+ * This consumes relatively abundant FLASH memory area not SRAM.
+ */
+#define print_P(s)          xputs(s)
 
 /* decimal */
-void print_dec(uint16_t data);
-void print_decs(int16_t data);
+#define print_dec(i)        xprintf("%u", i)
+#define print_decs(i)       xprintf("%d", i)
 
 /* hex */
-void print_hex4(uint8_t data);
-void print_hex8(uint8_t data);
-void print_hex16(uint16_t data);
-void print_hex32(uint32_t data);
+#define print_hex4(i)       xprintf("%X", i)
+#define print_hex8(i)       xprintf("%02X", i)
+#define print_hex16(i)      xprintf("%04X", i)
+#define print_hex32(i)      xprintf("%08lX", i)
 
 /* binary */
-void print_bin4(uint8_t data);
-void print_bin8(uint8_t data);
-void print_bin16(uint16_t data);
-void print_bin32(uint32_t data);
-void print_bin_reverse8(uint8_t data);
-void print_bin_reverse16(uint16_t data);
-void print_bin_reverse32(uint32_t data);
+#define print_bin4(i)       xprintf("%04b", i)
+#define print_bin8(i)       xprintf("%08b", i)
+#define print_bin16(i)      xprintf("%016b", i)
+#define print_bin32(i)      xprintf("%032lb", i)
+
+#define print_bin_reverse8(i)   xprintf("%08b", bitrev(i))
+#define print_bin_reverse16(i)  xprintf("%016b", bitrev16(i))
+#define print_bin_reverse32(i)  xprintf("%032lb", bitrev32(i))
+
 #ifdef __cplusplus
 }
 #endif
@@ -105,7 +119,6 @@ void print_bin_reverse32(uint32_t data);
 #define print_set_sendchar(func)
 #define print_S(s)
 #define print_P(s)
-#define print_CRLF()
 #define print_dec(data)
 #define print_decs(data)
 #define print_hex4(data)
diff --git a/common/util.c b/common/util.c
index 6d4d6bfda..7e0d54299 100644
--- a/common/util.c
+++ b/common/util.c
@@ -77,3 +77,25 @@ uint8_t biton32(uint32_t bits)
     if (bits >> 1) { bits >>= 1; n += 1;}
     return n;
 }
+
+
+
+uint8_t bitrev(uint8_t bits)
+{
+    bits = (bits & 0x0f)<<4 | (bits & 0xf0)>>4;
+    bits = (bits & 0b00110011)<<2 | (bits & 0b11001100)>>2;
+    bits = (bits & 0b01010101)<<1 | (bits & 0b10101010)>>1;
+    return bits;
+}
+
+uint16_t bitrev16(uint16_t bits)
+{
+    bits = bitrev(bits & 0x00ff)<<8 | bitrev((bits & 0xff00)>>8);
+    return bits;
+}
+
+uint32_t bitrev32(uint32_t bits)
+{
+    bits = (uint32_t)bitrev16(bits & 0x0000ffff)<<16 | bitrev16((bits & 0xffff0000)>>16);
+    return bits;
+}
diff --git a/common/util.h b/common/util.h
index 4b8b5ca3a..7451cc084 100644
--- a/common/util.h
+++ b/common/util.h
@@ -36,4 +36,8 @@ uint8_t biton(uint8_t bits);
 uint8_t biton16(uint16_t bits);
 uint8_t biton32(uint32_t bits);
 
+uint8_t  bitrev(uint8_t bits);
+uint16_t bitrev16(uint16_t bits);
+uint32_t bitrev32(uint32_t bits);
+
 #endif
diff --git a/common/xprintf.S b/common/xprintf.S
new file mode 100644
index 000000000..b5a97b20a
--- /dev/null
+++ b/common/xprintf.S
@@ -0,0 +1,500 @@
+;---------------------------------------------------------------------------;

+; Extended itoa, puts, printf and atoi                     (C)ChaN, 2011

+;---------------------------------------------------------------------------;

+

+				// Base size is 152 bytes

+#define	CR_CRLF		0	// Convert \n to \r\n (+10 bytes)

+#define USE_XPRINTF	1	// Enable xprintf function (+194 bytes)

+#define USE_XSPRINTF	0	// Add xsprintf function (+78 bytes)

+#define USE_XFPRINTF	0	// Add xfprintf function (+54 bytes)

+#define USE_XATOI	0	// Enable xatoi function (+182 bytes)

+

+

+#if FLASHEND > 0x1FFFF

+#error xitoa module does not support 256K devices

+#endif

+

+.nolist

+#include <avr/io.h>	// Include device specific definitions.

+.list

+

+#ifdef SPM_PAGESIZE	// Recent devices have "lpm Rd,Z+" and "movw".

+.macro	_LPMI	reg

+	lpm	\reg, Z+

+.endm

+.macro	_MOVW	dh,dl, sh,sl

+	movw	\dl, \sl

+.endm

+#else			// Earlier devices do not have "lpm Rd,Z+" nor "movw".

+.macro	_LPMI	reg

+	lpm

+	mov	\reg, r0

+	adiw	ZL, 1

+.endm

+.macro	_MOVW	dh,dl, sh,sl

+	mov	\dl, \sl

+	mov	\dh, \sh

+.endm

+#endif

+

+

+

+;---------------------------------------------------------------------------

+; Stub function to forward to user output function

+;

+;Prototype: void xputc (char chr	// a character to be output

+;			);

+;Size: 12/12 words

+

+.section .bss

+.global xfunc_out	; xfunc_out must be initialized before using this module.

+xfunc_out:	.ds.w	1

+.section .text

+

+

+.func xputc

+.global xputc

+xputc:

+#if CR_CRLF

+	cpi	r24, 10		;LF --> CRLF

+	brne	1f		;

+	ldi	r24, 13		;

+	rcall	1f		;

+	ldi	r24, 10		;/

+1:

+#endif

+	push	ZH

+	push	ZL

+	lds	ZL, xfunc_out+0	;Pointer to the registered output function.

+	lds	ZH, xfunc_out+1	;/

+	sbiw	ZL, 0		;Skip if null

+	breq	2f		;/

+	icall

+2:	pop	ZL

+	pop	ZH

+	ret

+.endfunc

+

+

+

+;---------------------------------------------------------------------------

+; Direct ROM string output

+;

+;Prototype: void xputs (const prog_char *str // rom string to be output

+;			);

+

+.func xputs

+.global xputs

+xputs:

+	_MOVW	ZH,ZL, r25,r24	; Z = pointer to rom string

+1:	_LPMI	r24

+	cpi	r24, 0

+	breq	2f

+	rcall	xputc

+	rjmp	1b

+2:	ret

+.endfunc

+

+

+;---------------------------------------------------------------------------

+; Extended direct numeral string output (32bit version)

+;

+;Prototype: void xitoa (long value,	// value to be output

+;                       char radix,	// radix

+;                       char width);	// minimum width

+;

+

+.func xitoa

+.global xitoa

+xitoa:

+				;r25:r22 = value, r20 = base, r18 = digits

+	clr	r31		;r31 = stack level

+	ldi	r30, ' '	;r30 = sign

+	ldi	r19, ' '	;r19 = filler

+	sbrs	r20, 7		;When base indicates signd format and the value

+	rjmp	0f		;is minus, add a '-'.

+	neg	r20		;

+	sbrs	r25, 7		;

+	rjmp	0f		;

+	ldi	r30, '-'	;

+	com	r22		;

+	com	r23		;

+	com	r24		;

+	com	r25		;

+	adc	r22, r1		;

+	adc	r23, r1		;

+	adc	r24, r1		;

+	adc	r25, r1		;/

+0:	sbrs	r18, 7		;When digits indicates zero filled,

+	rjmp	1f		;filler is '0'.

+	neg	r18		;

+	ldi	r19, '0'	;/

+				;----- string conversion loop

+1:	ldi	r21, 32		;r26 = r25:r22 % r20

+	clr	r26		;r25:r22 /= r20

+2:	lsl	r22		;

+	rol	r23		;

+	rol	r24		;

+	rol	r25		;

+	rol	r26		;

+	cp	r26, r20	;

+	brcs	3f		;

+	sub	r26, r20	;

+	inc	r22		;

+3:	dec	r21		;

+	brne	2b		;/

+	cpi	r26, 10		;r26 is a numeral digit '0'-'F'

+	brcs	4f		;

+	subi	r26, -7		;

+4:	subi	r26, -'0'	;/

+	push	r26		;Stack it

+	inc	r31		;/

+	cp	r22, r1		;Repeat until r25:r22 gets zero

+	cpc	r23, r1		;

+	cpc	r24, r1		;

+	cpc	r25, r1		;

+	brne	1b		;/

+

+	cpi	r30, '-'	;Minus sign if needed

+	brne	5f		;

+	push	r30		;

+	inc	r31		;/

+5:	cp	r31, r18	;Filler

+	brcc	6f		;

+	push	r19		;

+	inc	r31		;

+	rjmp	5b		;/

+

+6:	pop	r24		;Flush stacked digits and exit

+	rcall	xputc		;

+	dec	r31		;

+	brne	6b		;/

+

+	ret

+.endfunc

+

+

+

+;---------------------------------------------------------------------------;

+; Formatted string output (16/32bit version)

+;

+;Prototype:

+; void xprintf (const prog_char *format, ...);

+; void xsprintf(char*, const prog_char *format, ...);

+; void xfprintf(void(*func)(char), const prog_char *format, ...);

+;

+

+#if USE_XPRINTF

+

+.func xvprintf

+xvprintf:

+	ld	ZL, Y+		;Z = pointer to format string

+	ld	ZH, Y+		;/

+

+0:	_LPMI	r24		;Get a format char

+	cpi	r24, 0		;End of format string?

+	breq	90f		;/

+	cpi	r24, '%'	;Is format?

+	breq	20f		;/

+1:	rcall	xputc		;Put a normal character

+	rjmp	0b		;/

+90:	ret

+

+20:	ldi	r18, 0		;r18: digits

+	clt			;T: filler

+	_LPMI	r21		;Get flags

+	cpi	r21, '%'	;Is a %?

+	breq	1b		;/

+	cpi	r21, '0'	;Zero filled?

+	brne	23f		;

+	set			;/

+22:	_LPMI	r21		;Get width

+23:	cpi	r21, '9'+1	;

+	brcc	24f		;

+	subi	r21, '0'	;

+	brcs	90b		;

+	lsl	r18		;

+	mov	r0, r18		;

+	lsl	r18		;

+	lsl	r18		;

+	add	r18, r0		;

+	add	r18, r21	;

+	rjmp	22b		;/

+

+24:	brtc	25f		;get value (low word)

+	neg	r18		;

+25:	ld	r24, Y+		;

+	ld	r25, Y+		;/

+	cpi	r21, 'c'	;Is type character?

+	breq	1b		;/

+	cpi	r21, 's'	;Is type RAM string?

+	breq	50f		;/

+	cpi	r21, 'S'	;Is type ROM string?

+	breq	60f		;/

+	_MOVW	r23,r22,r25,r24	;r25:r22 = value

+	clr	r24		;

+	clr	r25		;

+	clt			;/

+	cpi	r21, 'l'	;Is long int?

+	brne	26f		;

+	ld	r24, Y+		;get value (high word)

+	ld	r25, Y+		;

+	set			;

+	_LPMI	r21		;/

+26:	cpi	r21, 'd'	;Is type signed decimal?

+	brne	27f		;/

+	ldi	r20, -10	;

+	brts	40f		;

+	sbrs	r23, 7		;

+	rjmp	40f		;

+	ldi	r24, -1		;

+	ldi	r25, -1		;

+	rjmp	40f		;/

+27:	cpi	r21, 'u'	;Is type unsigned decimal?

+	ldi	r20, 10		;

+	breq	40f		;/

+	cpi	r21, 'X'	;Is type hexdecimal?

+	ldi	r20, 16		;

+	breq	40f		;/

+	cpi	r21, 'b'	;Is type binary?

+	ldi	r20, 2		;

+	breq	40f		;/

+	ret			;abort

+40:	push	ZH		;Output the value

+	push	ZL		;

+	rcall	xitoa		;

+42:	pop	ZL		;

+	pop	ZH		;

+	rjmp	0b		;/

+

+50:	push	ZH		;Put a string on the RAM

+	push	ZL

+	_MOVW	ZH,ZL, r25,r24

+51:	ld	r24, Z+

+	cpi	r24, 0

+	breq	42b

+	rcall	xputc

+	rjmp	51b

+

+60:	push	ZH		;Put a string on the ROM

+	push	ZL

+	rcall	xputs

+	rjmp	42b

+.endfunc

+

+

+.func __xprintf

+.global __xprintf

+__xprintf:

+	push	YH

+	push	YL

+	in	YL, _SFR_IO_ADDR(SPL)

+#ifdef SPH

+	in	YH, _SFR_IO_ADDR(SPH)

+#else

+	clr	YH

+#endif

+	adiw	YL, 5		;Y = pointer to arguments

+	rcall	xvprintf

+	pop	YL

+	pop	YH

+	ret

+.endfunc

+

+

+#if USE_XSPRINTF

+

+.func __xsprintf

+putram:

+	_MOVW	ZH,ZL, r15,r14

+	st	Z+, r24

+	_MOVW	r15,r14, ZH,ZL

+	ret

+.global __xsprintf

+__xsprintf:

+	push	YH

+	push	YL

+	in	YL, _SFR_IO_ADDR(SPL)

+#ifdef SPH

+	in	YH, _SFR_IO_ADDR(SPH)

+#else

+	clr	YH

+#endif

+	adiw	YL, 5		;Y = pointer to arguments

+	lds	ZL, xfunc_out+0	;Save registered output function

+	lds	ZH, xfunc_out+1	;

+	push	ZL		;

+	push	ZH		;/

+	ldi	ZL, lo8(pm(putram));Set local output function

+	ldi	ZH, hi8(pm(putram));

+	sts	xfunc_out+0, ZL	;

+	sts	xfunc_out+1, ZH	;/

+	push	r15		;Initialize pointer to string buffer

+	push	r14		;

+	ld	r14, Y+		;

+	ld	r15, Y+		;/

+	rcall	xvprintf

+	_MOVW	ZH,ZL, r15,r14	;Terminate string

+	st	Z, r1		;

+	pop	r14		;

+	pop	r15		;/

+	pop	ZH		;Restore registered output function

+	pop	ZL		;

+	sts	xfunc_out+0, ZL	;

+	sts	xfunc_out+1, ZH	;/

+	pop	YL

+	pop	YH

+	ret

+.endfunc

+#endif

+

+

+#if USE_XFPRINTF

+.func __xfprintf

+.global __xfprintf

+__xfprintf:

+	push	YH

+	push	YL

+	in	YL, _SFR_IO_ADDR(SPL)

+#ifdef SPH

+	in	YH, _SFR_IO_ADDR(SPH)

+#else

+	clr	YH

+#endif

+	adiw	YL, 5		;Y = pointer to arguments

+	lds	ZL, xfunc_out+0	;Save registered output function

+	lds	ZH, xfunc_out+1	;

+	push	ZL		;

+	push	ZH		;/

+	ld	ZL, Y+		;Set output function

+	ld	ZH, Y+		;

+	sts	xfunc_out+0, ZL	;

+	sts	xfunc_out+1, ZH	;/

+	rcall	xvprintf

+	pop	ZH		;Restore registered output function

+	pop	ZL		;

+	sts	xfunc_out+0, ZL	;

+	sts	xfunc_out+1, ZH	;/

+	pop	YL

+	pop	YH

+	ret

+.endfunc

+#endif

+

+#endif

+

+

+

+;---------------------------------------------------------------------------

+; Extended numeral string input

+;

+;Prototype:

+; char xatoi (           /* 1: Successful, 0: Failed */

+;      const char **str, /* pointer to pointer to source string */

+;      long *res         /* result */

+; );

+;

+

+

+#if USE_XATOI

+.func xatoi

+.global xatoi

+xatoi:

+	_MOVW	r1, r0, r23, r22

+	_MOVW	XH, XL, r25, r24

+	ld	ZL, X+

+	ld	ZH, X+

+	clr	r18		;r21:r18 = 0;

+	clr	r19		;

+	clr	r20		;

+	clr	r21		;/

+	clt			;T = 0;

+

+	ldi	r25, 10		;r25 = 10;

+	rjmp	41f		;/

+40:	adiw	ZL, 1		;Z++;

+41:	ld	r22, Z		;r22 = *Z;

+	cpi	r22, ' '	;if(r22 == ' ') continue

+	breq	40b		;/

+	brcs	70f		;if(r22 < ' ') error;

+	cpi	r22, '-'	;if(r22 == '-') {

+	brne	42f		; T = 1;

+	set			; continue;

+	rjmp	40b		;}

+42:	cpi	r22, '9'+1	;if(r22 > '9') error;

+	brcc	70f		;/

+	cpi	r22, '0'	;if(r22 < '0') error;

+	brcs	70f		;/

+	brne	51f		;if(r22 > '0') cv_start;

+	ldi	r25, 8		;r25 = 8;

+	adiw	ZL, 1		;r22 = *(++Z);

+	ld	r22, Z		;/

+	cpi	r22, ' '+1	;if(r22 <= ' ') exit;

+	brcs	80f		;/

+	cpi	r22, 'b'	;if(r22 == 'b') {

+	brne	43f		; r25 = 2;

+	ldi	r25, 2		; cv_start;

+	rjmp	50f		;}

+43:	cpi	r22, 'x'	;if(r22 != 'x') error;

+	brne	51f		;/

+	ldi	r25, 16		;r25 = 16;

+

+50:	adiw	ZL, 1		;Z++;

+	ld	r22, Z		;r22 = *Z;

+51:	cpi	r22, ' '+1	;if(r22 <= ' ') break;

+	brcs	80f		;/

+	cpi	r22, 'a'	;if(r22 >= 'a') r22 =- 0x20;

+	brcs	52f		;

+	subi	r22, 0x20	;/

+52:	subi	r22, '0'	;if((r22 -= '0') < 0) error;

+	brcs	70f		;/

+	cpi	r22, 10		;if(r22 >= 10) {

+	brcs	53f		; r22 -= 7;

+	subi	r22, 7		; if(r22 < 10) 

+	cpi	r22, 10		;

+	brcs	70f		;}

+53:	cp	r22, r25	;if(r22 >= r25) error;

+	brcc	70f		;/

+60:	ldi	r24, 33		;r21:r18 *= r25;

+	sub	r23, r23	;

+61:	brcc	62f		;

+	add	r23, r25	;

+62:	lsr	r23		;

+	ror	r21		;

+	ror	r20		;

+	ror	r19		;

+	ror	r18		;

+	dec	r24		;

+	brne	61b		;/

+	add	r18, r22	;r21:r18 += r22;

+	adc	r19, r24	;

+	adc	r20, r24	;

+	adc	r21, r24	;/

+	rjmp	50b		;repeat

+

+70:	ldi	r24, 0

+	rjmp	81f

+80:	ldi	r24, 1

+81:	brtc	82f

+	clr	r22

+	com	r18

+	com	r19

+	com	r20

+	com	r21

+	adc	r18, r22

+	adc	r19, r22

+	adc	r20, r22

+	adc	r21, r22

+82:	st	-X, ZH

+	st	-X, ZL

+	_MOVW	XH, XL, r1, r0

+	st	X+, r18

+	st	X+, r19

+	st	X+, r20

+	st	X+, r21

+	clr	r1

+	ret

+.endfunc

+#endif

+

+

diff --git a/common/xprintf.h b/common/xprintf.h
new file mode 100644
index 000000000..cddec9940
--- /dev/null
+++ b/common/xprintf.h
@@ -0,0 +1,103 @@
+/*---------------------------------------------------------------------------

+   Extended itoa, puts and printf                    (C)ChaN, 2011

+-----------------------------------------------------------------------------*/

+

+#ifndef XPRINTF_H

+#define XPRINTF_H

+

+#include <inttypes.h>

+#include <avr/pgmspace.h>

+

+extern void (*xfunc_out)(uint8_t);

+#define xdev_out(func) xfunc_out = (void(*)(uint8_t))(func)

+

+/* This is a pointer to user defined output function. It must be initialized

+   before using this modle.

+*/

+

+void xputc(char chr);

+

+/* This is a stub function to forward outputs to user defined output function.

+   All outputs from this module are output via this function.

+*/

+

+

+/*-----------------------------------------------------------------------------*/

+void xputs(const prog_char *string);

+

+/*  The string placed in the ROM is forwarded to xputc() directly.

+*/

+

+

+/*-----------------------------------------------------------------------------*/

+void xitoa(long value, char radix, char width);

+

+/* Extended itoa().

+

+      value  radix  width   output

+        100     10      6   "   100"

+        100     10     -6   "000100"

+        100     10      0   "100"

+ 4294967295     10      0   "4294967295"

+ 4294967295    -10      0   "-1"

+     655360     16     -8   "000A0000"

+       1024     16      0   "400"

+       0x55      2     -8   "01010101"

+*/

+

+

+/*-----------------------------------------------------------------------------*/

+#define xprintf(format, ...)            __xprintf(PSTR(format), ##__VA_ARGS__)

+#define xsprintf(str, format, ...)      __xsprintf(str, PSTR(format), ##__VA_ARGS__)

+#define xfprintf(func, format, ...)     __xfprintf(func, PSTR(format), ##__VA_ARGS__)

+

+void __xprintf(const prog_char *format, ...);	/* Send formatted string to the registered device */

+void __xsprintf(char*, const prog_char *format, ...);	/* Put formatted string to the memory */

+void __xfprintf(void(*func)(uint8_t), const prog_char *format, ...); /* Send formatted string to the specified device */

+

+/* Format string is placed in the ROM. The format flags is similar to printf().

+

+   %[flag][width][size]type

+

+   flag

+     A '0' means filled with '0' when output is shorter than width.

+     ' ' is used in default. This is effective only numeral type.

+   width

+     Minimum width in decimal number. This is effective only numeral type.

+     Default width is zero.

+   size

+     A 'l' means the argument is long(32bit). Default is short(16bit).

+     This is effective only numeral type.

+   type

+     'c' : Character, argument is the value

+     's' : String placed on the RAM, argument is the pointer

+     'S' : String placed on the ROM, argument is the pointer

+     'd' : Signed decimal, argument is the value

+     'u' : Unsigned decimal, argument is the value

+     'X' : Hexdecimal, argument is the value

+     'b' : Binary, argument is the value

+     '%' : '%'

+

+*/

+

+

+/*-----------------------------------------------------------------------------*/

+char xatoi(char **str, long *ret);

+

+/* Get value of the numeral string. 

+

+  str

+    Pointer to pointer to source string

+

+    "0b11001010" binary

+    "0377" octal

+    "0xff800" hexdecimal

+    "1250000" decimal

+    "-25000" decimal

+

+  ret

+    Pointer to return value

+*/

+

+#endif

+