Revert "Fix conflicting types for 'tfp_printf' (#8269)"

This reverts commit e17b55e33ad5b3dcefcf7b828ac99aeb2daeeae2.

2 files changed, 343 insertions, 0 deletions

diff --git a/tmk_core/common/chibios/printf.c b/tmk_core/common/chibios/printf.c
new file mode 100644
index 0000000000..a99752bb3d
--- /dev/null
+++ b/tmk_core/common/chibios/printf.c
@@ -0,0 +1,233 @@
+/*
+ * found at: http://www.sparetimelabs.com/tinyprintf/tinyprintf.php
+ * and:      http://www.sparetimelabs.com/printfrevisited/printfrevisited.php
+ */
+
+/*
+File: printf.c
+
+Copyright (C) 2004  Kustaa Nyholm
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+*/
+
+#include "printf.h"
+
+typedef void (*putcf)(void*, char);
+static putcf stdout_putf;
+static void* stdout_putp;
+
+// this adds cca 400 bytes
+#define PRINTF_LONG_SUPPORT
+
+#ifdef PRINTF_LONG_SUPPORT
+
+static void uli2a(unsigned long int num, unsigned int base, int uc, char* bf) {
+    int          n = 0;
+    unsigned int d = 1;
+    while (num / d >= base) d *= base;
+    while (d != 0) {
+        int dgt = num / d;
+        num %= d;
+        d /= base;
+        if (n || dgt > 0 || d == 0) {
+            *bf++ = dgt + (dgt < 10 ? '0' : (uc ? 'A' : 'a') - 10);
+            ++n;
+        }
+    }
+    *bf = 0;
+}
+
+static void li2a(long num, char* bf) {
+    if (num < 0) {
+        num   = -num;
+        *bf++ = '-';
+    }
+    uli2a(num, 10, 0, bf);
+}
+
+#endif
+
+static void ui2a(unsigned int num, unsigned int base, int uc, char* bf) {
+    int          n = 0;
+    unsigned int d = 1;
+    while (num / d >= base) d *= base;
+    while (d != 0) {
+        int dgt = num / d;
+        num %= d;
+        d /= base;
+        if (n || dgt > 0 || d == 0) {
+            *bf++ = dgt + (dgt < 10 ? '0' : (uc ? 'A' : 'a') - 10);
+            ++n;
+        }
+    }
+    *bf = 0;
+}
+
+static void i2a(int num, char* bf) {
+    if (num < 0) {
+        num   = -num;
+        *bf++ = '-';
+    }
+    ui2a(num, 10, 0, bf);
+}
+
+static int a2d(char ch) {
+    if (ch >= '0' && ch <= '9')
+        return ch - '0';
+    else if (ch >= 'a' && ch <= 'f')
+        return ch - 'a' + 10;
+    else if (ch >= 'A' && ch <= 'F')
+        return ch - 'A' + 10;
+    else
+        return -1;
+}
+
+static char a2i(char ch, const char** src, int base, int* nump) {
+    const char* p   = *src;
+    int         num = 0;
+    int         digit;
+    while ((digit = a2d(ch)) >= 0) {
+        if (digit > base) break;
+        num = num * base + digit;
+        ch  = *p++;
+    }
+    *src  = p;
+    *nump = num;
+    return ch;
+}
+
+static void putchw(void* putp, putcf putf, int n, char z, char* bf) {
+    char  fc = z ? '0' : ' ';
+    char  ch;
+    char* p = bf;
+    while (*p++ && n > 0) n--;
+    while (n-- > 0) putf(putp, fc);
+    while ((ch = *bf++)) putf(putp, ch);
+}
+
+void tfp_format(void* putp, putcf putf, const char* fmt, va_list va) {
+    // This used to handle max of 12, but binary support jumps this to at least 32
+    char bf[36];
+
+    char ch;
+
+    while ((ch = *(fmt++))) {
+        if (ch != '%')
+            putf(putp, ch);
+        else {
+            char lz = 0;
+#ifdef PRINTF_LONG_SUPPORT
+            char lng = 0;
+#endif
+            int w = 0;
+            ch    = *(fmt++);
+            if (ch == '0') {
+                ch = *(fmt++);
+                lz = 1;
+            }
+            if (ch >= '0' && ch <= '9') {
+                ch = a2i(ch, &fmt, 10, &w);
+            }
+#ifdef PRINTF_LONG_SUPPORT
+            if (ch == 'l') {
+                ch  = *(fmt++);
+                lng = 1;
+            }
+#endif
+            switch (ch) {
+                case 0:
+                    goto abort;
+                case 'u': {
+#ifdef PRINTF_LONG_SUPPORT
+                    if (lng)
+                        uli2a(va_arg(va, unsigned long int), 10, 0, bf);
+                    else
+#endif
+                        ui2a(va_arg(va, unsigned int), 10, 0, bf);
+                    putchw(putp, putf, w, lz, bf);
+                    break;
+                }
+                case 'd': {
+#ifdef PRINTF_LONG_SUPPORT
+                    if (lng)
+                        li2a(va_arg(va, unsigned long int), bf);
+                    else
+#endif
+                        i2a(va_arg(va, int), bf);
+                    putchw(putp, putf, w, lz, bf);
+                    break;
+                }
+                case 'x':
+                case 'X':
+#ifdef PRINTF_LONG_SUPPORT
+                    if (lng)
+                        uli2a(va_arg(va, unsigned long int), 16, (ch == 'X'), bf);
+                    else
+#endif
+                        ui2a(va_arg(va, unsigned int), 16, (ch == 'X'), bf);
+                    putchw(putp, putf, w, lz, bf);
+                    break;
+                case 'c':
+                    putf(putp, (char)(va_arg(va, int)));
+                    break;
+                case 's':
+                    putchw(putp, putf, w, 0, va_arg(va, char*));
+                    break;
+                case 'b':
+#ifdef PRINTF_LONG_SUPPORT
+                    if (lng)
+                        uli2a(va_arg(va, unsigned long int), 2, 0, bf);
+                    else
+#endif
+                        ui2a(va_arg(va, unsigned int), 2, 0, bf);
+                    putchw(putp, putf, w, lz, bf);
+                    break;
+                case '%':
+                    putf(putp, ch);
+                default:
+                    break;
+            }
+        }
+    }
+abort:;
+}
+
+void init_printf(void* putp, void (*putf)(void*, char)) {
+    stdout_putf = putf;
+    stdout_putp = putp;
+}
+
+int tfp_printf(const char* fmt, ...) {
+    va_list va;
+    va_start(va, fmt);
+    tfp_format(stdout_putp, stdout_putf, fmt, va);
+    va_end(va);
+
+    return 1;
+}
+
+static void putcp(void* p, char c) { *(*((char**)p))++ = c; }
+
+int tfp_sprintf(char* s, const char* fmt, ...) {
+    va_list va;
+    va_start(va, fmt);
+    tfp_format(&s, putcp, fmt, va);
+    putcp(&s, 0);
+    va_end(va);
+
+    return 1;
+}
diff --git a/tmk_core/common/chibios/printf.h b/tmk_core/common/chibios/printf.h
new file mode 100644
index 0000000000..775459e1e8
--- /dev/null
+++ b/tmk_core/common/chibios/printf.h
@@ -0,0 +1,110 @@
+/*
+ * found at: http://www.sparetimelabs.com/tinyprintf/tinyprintf.php
+ * and:      http://www.sparetimelabs.com/printfrevisited/printfrevisited.php
+ */
+
+/*
+File: printf.h
+
+Copyright (C) 2004  Kustaa Nyholm
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library 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 Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+This library is realy just two files: 'printf.h' and 'printf.c'.
+
+They provide a simple and small (+200 loc) printf functionality to
+be used in embedded systems.
+
+I've found them so usefull in debugging that I do not bother with a
+debugger at all.
+
+They are distributed in source form, so to use them, just compile them
+into your project.
+
+Two printf variants are provided: printf and sprintf.
+
+The formats supported by this implementation are: 'd' 'u' 'c' 's' 'x' 'X'.
+
+Zero padding and field width are also supported.
+
+If the library is compiled with 'PRINTF_SUPPORT_LONG' defined then the
+long specifier is also
+supported. Note that this will pull in some long math routines (pun intended!)
+and thus make your executable noticably longer.
+
+The memory foot print of course depends on the target cpu, compiler and
+compiler options, but a rough guestimate (based on a H8S target) is about
+1.4 kB for code and some twenty 'int's and 'char's, say 60 bytes of stack space.
+Not too bad. Your milage may vary. By hacking the source code you can
+get rid of some hunred bytes, I'm sure, but personally I feel the balance of
+functionality and flexibility versus  code size is close to optimal for
+many embedded systems.
+
+To use the printf you need to supply your own character output function,
+something like :
+
+    void putc ( void* p, char c)
+        {
+        while (!SERIAL_PORT_EMPTY) ;
+        SERIAL_PORT_TX_REGISTER = c;
+        }
+
+Before you can call printf you need to initialize it to use your
+character output function with something like:
+
+    init_printf(NULL,putc);
+
+Notice the 'NULL' in 'init_printf' and the parameter 'void* p' in 'putc',
+the NULL (or any pointer) you pass into the 'init_printf' will eventually be
+passed to your 'putc' routine. This allows you to pass some storage space (or
+anything realy) to the character output function, if necessary.
+This is not often needed but it was implemented like that because it made
+implementing the sprintf function so neat (look at the source code).
+
+The code is re-entrant, except for the 'init_printf' function, so it
+is safe to call it from interupts too, although this may result in mixed output.
+If you rely on re-entrancy, take care that your 'putc' function is re-entrant!
+
+The printf and sprintf functions are actually macros that translate to
+'tfp_printf' and 'tfp_sprintf'. This makes it possible
+to use them along with 'stdio.h' printf's in a single source file.
+You just need to undef the names before you include the 'stdio.h'.
+Note that these are not function like macros, so if you have variables
+or struct members with these names, things will explode in your face.
+Without variadic macros this is the best we can do to wrap these
+fucnction. If it is a problem just give up the macros and use the
+functions directly or rename them.
+
+For further details see source code.
+
+regs Kusti, 23.10.2004
+*/
+
+#ifndef __TFP_PRINTF__
+#define __TFP_PRINTF__
+
+#include <stdarg.h>
+
+void init_printf(void* putp, void (*putf)(void*, char));
+
+int tfp_printf(const char* fmt, ...);
+int tfp_sprintf(char* s, const char* fmt, ...);
+
+void tfp_format(void* putp, void (*putf)(void*, char), const char* fmt, va_list va);
+
+#define printf tfp_printf
+#define sprintf tfp_sprintf
+
+#endif