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author | Marti Bolivar <mbolivar@leaflabs.com> | 2011-11-15 12:45:43 -0500 |
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committer | Marti Bolivar <mbolivar@leaflabs.com> | 2012-04-11 16:56:50 -0400 |
commit | f36fae273ec84ee2c53a33caa2dddea2d79db0da (patch) | |
tree | fcdaf01cc72a69ca8252213eec35fa0c4aba9ce0 /libmaple/systick.h | |
parent | 526d51aa2b83c7a73a2ecdba8525d2a0847e5587 (diff) | |
download | librambutan-f36fae273ec84ee2c53a33caa2dddea2d79db0da.tar.gz librambutan-f36fae273ec84ee2c53a33caa2dddea2d79db0da.zip |
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>
Diffstat (limited to 'libmaple/systick.h')
-rw-r--r-- | libmaple/systick.h | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/libmaple/systick.h b/libmaple/systick.h deleted file mode 100644 index 6ec3364..0000000 --- a/libmaple/systick.h +++ /dev/null @@ -1,117 +0,0 @@ -/****************************************************************************** - * 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 systick.h - * - * @brief Various system timer definitions - */ - -#ifndef _SYSTICK_H_ -#define _SYSTICK_H_ - -#include "libmaple_types.h" -#include "util.h" - -#ifdef __cplusplus -extern "C"{ -#endif - -/** SysTick register map type */ -typedef struct systick_reg_map { - __io uint32 CSR; /**< Control and status register */ - __io uint32 RVR; /**< Reload value register */ - __io uint32 CNT; /**< Current value register ("count") */ - __io uint32 CVR; /**< Calibration value register */ -} systick_reg_map; - -/** SysTick register map base pointer */ -#define SYSTICK_BASE ((struct systick_reg_map*)0xE000E010) - -/* - * Register bit definitions. - */ - -/* Control and status register */ - -#define SYSTICK_CSR_COUNTFLAG BIT(16) -#define SYSTICK_CSR_CLKSOURCE BIT(2) -#define SYSTICK_CSR_CLKSOURCE_EXTERNAL 0 -#define SYSTICK_CSR_CLKSOURCE_CORE BIT(2) -#define SYSTICK_CSR_TICKINT BIT(1) -#define SYSTICK_CSR_TICKINT_PEND BIT(1) -#define SYSTICK_CSR_TICKINT_NO_PEND 0 -#define SYSTICK_CSR_ENABLE BIT(0) -#define SYSTICK_CSR_ENABLE_MULTISHOT BIT(0) -#define SYSTICK_CSR_ENABLE_DISABLED 0 - -/* Calibration value register */ - -#define SYSTICK_CVR_NOREF BIT(31) -#define SYSTICK_CVR_SKEW BIT(30) -#define SYSTICK_CVR_TENMS 0xFFFFFF - -/** System elapsed time, in milliseconds */ -extern volatile uint32 systick_uptime_millis; - -/** - * @brief Returns the system uptime, in milliseconds. - */ -static inline uint32 systick_uptime(void) { - return systick_uptime_millis; -} - - -void systick_init(uint32 reload_val); -void systick_disable(); -void systick_enable(); - -/** - * @brief Returns the current value of the SysTick counter. - */ -static inline uint32 systick_get_count(void) { - return SYSTICK_BASE->CNT; -} - -/** - * @brief Check for underflow. - * - * This function returns 1 if the SysTick timer has counted to 0 since - * the last time it was called. However, any reads of any part of the - * SysTick Control and Status Register SYSTICK_BASE->CSR will - * interfere with this functionality. See the ARM Cortex M3 Technical - * Reference Manual for more details (e.g. Table 8-3 in revision r1p1). - */ -static inline uint32 systick_check_underflow(void) { - return SYSTICK_BASE->CSR & SYSTICK_CSR_COUNTFLAG; -} - -#ifdef __cplusplus -} // extern "C" -#endif - -#endif - |