Move public headers to include directories; related cleanups.

Move libmaple/*.h to (new) libmaple/include/libmaple/. The new
accepted way to include a libmaple header foo.h is with:

    #include <libmaple/foo.h>

This is more polite in terms of the include namespace. It also allows
us to e.g. implement the Arduino SPI library at all (which has header
SPI.h; providing it was previously impossible on case-insensitive
filesystems due to libmaple's spi.h).

Similarly for Wirish.

The old include style (#include "header.h") is now deprecated.

libmaple/*.h:

- Change include guard #defines from _FOO_H_ to _LIBMAPLE_FOO_H_.
- Add license headers where they're missing
- Add conditional extern "C" { ... } blocks where they're missing
  (they aren't always necessary, but we might was well do it against
  the future, while we're at it.).
- Change includes from #include "foo.h" to #include <libmaple/foo.h>.
- Move includes after extern "C".
- Remove extra trailing newlines

Note that this doesn't include the headers under libmaple/usb/ or
libmaple/usb/usb_lib. These will get fixed later.

libmaple/*.c:

- Change includes from #include "foo.h" to #include <libmaple/foo.h>.

Makefile:

- Add I$(LIBMAPLE_PATH)/include/libmaple to GLOBAL_FLAGS.  This allows
  for users (including Wirish) to migrate their code, but should go
  away ASAP, since it slows down compilation.

Wirish:

- Move wirish/**/*.h to (new) wirish/include/wirish/.  This ignores
  the USB headers, which, as usual, are getting handled after
  everything else.

- Similarly generify wirish/boards/ structure. For each supported
  board "foo", move wirish/boards/foo.h and wirish/boards/foo.cpp to
  wirish/boards/foo/include/board/board.h and
  wirish/boards/foo/board.cpp, respectively. Also remove the #ifdef
  hacks around the .cpp files.

- wirish/rules.mk: put wirish/boards/foo/include in the include path
  (and add wirish/boards/foo/board.cpp to the list of sources to be
  compiled). This allows saying:

      #include <board/board.h>

  instead of the hack currently in place. We can allow the user to
  override this setting later to make adding custom board definitions
  easier.

- Disable -Werror in libmaple/rules.mk, as the current USB warnings
  don't let the olimex_stm32_h103 board compile. We can re-enable
  -Werror once we've moved the board-specific bits out of libmaple
  proper.

libraries, examples:

- Update includes accordingly.
- Miscellaneous cosmetic fixups.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 151 insertions, 0 deletions

diff --git a/wirish/include/wirish/wirish_math.h b/wirish/include/wirish/wirish_math.h
new file mode 100644
index 0000000..3820cab
--- /dev/null
+++ b/wirish/include/wirish/wirish_math.h
@@ -0,0 +1,151 @@
+/******************************************************************************
+ * The MIT License
+ *
+ * Copyright (c) 2010 Perry Hung.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *****************************************************************************/
+
+/**
+ * @file wirish_math.h
+ * @brief Includes <math.h>; provides Arduino-compatible math routines.
+ */
+
+#ifndef _WIRISH_WIRISH_MATH_H_
+#define _WIRISH_WIRISH_MATH_H_
+
+#include <math.h>
+
+/**
+ * @brief Initialize the pseudo-random number generator.
+ * @param seed the number used to initialize the seed; cannot be zero.
+ */
+void randomSeed(unsigned int seed);
+
+/**
+ * @brief Generate a pseudo-random number with upper bound.
+ * @param max An upper bound on the returned value, exclusive.
+ * @return A pseudo-random number in the range [0,max).
+ * @see randomSeed()
+ */
+long random(long max);
+
+/**
+ * @brief Generate a pseudo-random number with lower and upper bounds.
+ * @param min Lower bound on the returned value, inclusive.
+ * @param max Upper bound on the returned value, exclusive.
+ * @return A pseudo-random number in the range [min, max).
+ * @see randomSeed()
+ */
+long random(long min, long max);
+
+/**
+ * @brief Remap a number from one range to another.
+ *
+ * That is, a value equal to fromStart gets mapped to toStart, a value
+ * of fromEnd to toEnd, and other values are mapped proportionately.
+ *
+ * Does not constrain value to lie within [fromStart, fromEnd].
+ *
+ * If a "start" value is larger than its corresponding "end", the
+ * ranges are reversed, so map(n, 1, 10, 10, 1) would reverse the
+ * range [1,10].
+ *
+ * Negative numbers may appear as any argument.
+ *
+ * @param value the value to map.
+ * @param fromStart the beginning of the value's current range.
+ * @param fromEnd the end of the value's current range.
+ * @param toStart the beginning of the value's mapped range.
+ * @param toEnd the end of the value's mapped range.
+ * @return the mapped value.
+ */
+static inline long map(long value, long fromStart, long fromEnd,
+                long toStart, long toEnd) {
+    return (value - fromStart) * (toEnd - toStart) / (fromEnd - fromStart) +
+        toStart;
+}
+
+#define PI          3.1415926535897932384626433832795
+#define HALF_PI     1.5707963267948966192313216916398
+#define TWO_PI      6.283185307179586476925286766559
+#define DEG_TO_RAD  0.017453292519943295769236907684886
+#define RAD_TO_DEG 57.295779513082320876798154814105
+
+#define min(a,b)                ((a)<(b)?(a):(b))
+#define max(a,b)                ((a)>(b)?(a):(b))
+#define constrain(amt,low,high) ((amt)<(low)?(low):((amt)>(high)?(high):(amt)))
+#define round(x)                ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))
+#define radians(deg)            ((deg)*DEG_TO_RAD)
+#define degrees(rad)            ((rad)*RAD_TO_DEG)
+#define sq(x)                   ((x)*(x))
+
+/* undefine stdlib's abs if encountered */
+#ifdef abs
+#undef abs
+#endif
+#define abs(x) (((x) > 0) ? (x) : -(x))
+
+/* Following are duplicate declarations (with Doxygen comments) for
+ * some of the math.h functions; this is for the convenience of the
+ * Sphinx docs.
+ */
+
+/**
+ * Compute the cosine of an angle, in radians.
+ * @param x The radian measure of the angle.
+ * @return The cosine of x.  This value will be between -1 and 1.
+ */
+double cos(double x);
+
+/**
+ * Compute the sine of an angle, in radians.
+ * @param x The radian measure of the angle.
+ * @return The sine of x.  This value will be between -1 and 1.
+ */
+double sin(double x);
+
+/**
+ * Compute the tangent of an angle, in radians.
+ * @param x The radian measure of the angle.
+ * @return The tangent of x.  There are no limits on the return value
+ * of this function.
+ */
+double tan(double x);
+
+/**
+ * Compute the square root of a number.
+ * @param x The number whose square root to find.  This value cannot
+ * be negative.
+ * @return The square root of x.  The return value is never negative.
+ */
+double sqrt(double x);
+
+/**
+ * Compute an exponentiation.
+ * @param x the base. This value cannot be zero if y <= 0.  This value
+ * cannot be negative if y is not an integral value.
+ * @param y the exponent.
+ * @return x raised to the power y.
+ */
+double pow(double x, double y);
+
+#endif