1 files changed, 103 insertions, 0 deletions

diff --git a/platforms/avr/xprintf.h b/platforms/avr/xprintf.h
new file mode 100644
index 000000000..80834f171
--- /dev/null
+++ b/platforms/avr/xprintf.h
@@ -0,0 +1,103 @@
+/*---------------------------------------------------------------------------
+   Extended itoa, puts and printf                    (C)ChaN, 2011
+-----------------------------------------------------------------------------*/
+
+#pragma once
+
+#include <inttypes.h>
+#include <avr/pgmspace.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+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 char *string_p);
+
+/*  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 char *format_p, ...); /* Send formatted string to the registered device */
+// void __xsprintf(char*, const char *format_p, ...);   /* Put formatted string to the memory */
+// void __xfprintf(void(*func)(uint8_t), const char *format_p, ...); /* 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
+*/
+
+#ifdef __cplusplus
+}
+#endif