git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@5854 35acf78f-673a-0410-8e92-d51de3d6d3f4

1 files changed, 194 insertions, 0 deletions

diff --git a/os/hal/src/hal.c b/os/hal/src/hal.c
new file mode 100644
index 000000000..974a8854b
--- /dev/null
+++ b/os/hal/src/hal.c
@@ -0,0 +1,194 @@
+/*

+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,

+                 2011,2012,2013 Giovanni Di Sirio.

+

+    This file is part of ChibiOS/RT.

+

+    ChibiOS/RT 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 3 of the License, or

+    (at your option) any later version.

+

+    ChibiOS/RT 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/>.

+*/

+

+/**

+ * @file    hal.c

+ * @brief   HAL subsystem code.

+ *

+ * @addtogroup HAL

+ * @{

+ */

+

+#include "ch.h"

+#include "hal.h"

+

+/*===========================================================================*/

+/* Driver local definitions.                                                 */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver exported variables.                                                */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver local variables and types.                                         */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver local functions.                                                   */

+/*===========================================================================*/

+

+/*===========================================================================*/

+/* Driver exported functions.                                                */

+/*===========================================================================*/

+

+/**

+ * @brief   HAL initialization.

+ * @details This function invokes the low level initialization code then

+ *          initializes all the drivers enabled in the HAL. Finally the

+ *          board-specific initialization is performed by invoking

+ *          @p boardInit() (usually defined in @p board.c).

+ *

+ * @init

+ */

+void halInit(void) {

+

+  hal_lld_init();

+

+#if HAL_USE_TM || defined(__DOXYGEN__)

+  tmInit();

+#endif

+#if HAL_USE_PAL || defined(__DOXYGEN__)

+  palInit(&pal_default_config);

+#endif

+#if HAL_USE_ADC || defined(__DOXYGEN__)

+  adcInit();

+#endif

+#if HAL_USE_CAN || defined(__DOXYGEN__)

+  canInit();

+#endif

+#if HAL_USE_EXT || defined(__DOXYGEN__)

+  extInit();

+#endif

+#if HAL_USE_GPT || defined(__DOXYGEN__)

+  gptInit();

+#endif

+#if HAL_USE_I2C || defined(__DOXYGEN__)

+  i2cInit();

+#endif

+#if HAL_USE_ICU || defined(__DOXYGEN__)

+  icuInit();

+#endif

+#if HAL_USE_MAC || defined(__DOXYGEN__)

+  macInit();

+#endif

+#if HAL_USE_PWM || defined(__DOXYGEN__)

+  pwmInit();

+#endif

+#if HAL_USE_SERIAL || defined(__DOXYGEN__)

+  sdInit();

+#endif

+#if HAL_USE_SDC || defined(__DOXYGEN__)

+  sdcInit();

+#endif

+#if HAL_USE_SPI || defined(__DOXYGEN__)

+  spiInit();

+#endif

+#if HAL_USE_UART || defined(__DOXYGEN__)

+  uartInit();

+#endif

+#if HAL_USE_USB || defined(__DOXYGEN__)

+  usbInit();

+#endif

+#if HAL_USE_MMC_SPI || defined(__DOXYGEN__)

+  mmcInit();

+#endif

+#if HAL_USE_SERIAL_USB || defined(__DOXYGEN__)

+  sduInit();

+#endif

+#if HAL_USE_RTC || defined(__DOXYGEN__)

+  rtcInit();

+#endif

+  /* Board specific initialization.*/

+  boardInit();

+}

+

+#if HAL_IMPLEMENTS_COUNTERS || defined(__DOXYGEN__)

+/**

+ * @brief   Realtime window test.

+ * @details This function verifies if the current realtime counter value

+ *          lies within the specified range or not. The test takes care

+ *          of the realtime counter wrapping to zero on overflow.

+ * @note    When start==end then the function returns always true because the

+ *          whole time range is specified.

+ * @note    This is an optional service that could not be implemented in

+ *          all HAL implementations.

+ * @note    This function can be called from any context.

+ *

+ * @par Example 1

+ * Example of a guarded loop using the realtime counter. The loop implements

+ * a timeout after one second.

+ * @code

+ *   halrtcnt_t start = halGetCounterValue();

+ *   halrtcnt_t timeout  = start + S2RTT(1);

+ *   while (my_condition) {

+ *     if (!halIsCounterWithin(start, timeout)

+ *       return TIMEOUT;

+ *     // Do something.

+ *   }

+ *   // Continue.

+ * @endcode

+ *

+ * @par Example 2

+ * Example of a loop that lasts exactly 50 microseconds.

+ * @code

+ *   halrtcnt_t start = halGetCounterValue();

+ *   halrtcnt_t timeout  = start + US2RTT(50);

+ *   while (halIsCounterWithin(start, timeout)) {

+ *     // Do something.

+ *   }

+ *   // Continue.

+ * @endcode

+ *

+ * @param[in] start     the start of the time window (inclusive)

+ * @param[in] end       the end of the time window (non inclusive)

+ * @retval TRUE         current time within the specified time window.

+ * @retval FALSE        current time not within the specified time window.

+ *

+ * @special

+ */

+bool_t halIsCounterWithin(halrtcnt_t start, halrtcnt_t end) {

+  halrtcnt_t now = halGetCounterValue();

+

+  return end > start ? (now >= start) && (now < end) :

+                       (now >= start) || (now < end);

+}

+

+/**

+ * @brief   Polled delay.

+ * @note    The real delays is always few cycles in excess of the specified

+ *          value.

+ * @note    This is an optional service that could not be implemented in

+ *          all HAL implementations.

+ * @note    This function can be called from any context.

+ *

+ * @param[in] ticks     number of ticks

+ *

+ * @special

+ */

+void halPolledDelay(halrtcnt_t ticks) {

+  halrtcnt_t start = halGetCounterValue();

+  halrtcnt_t timeout  = start + (ticks);

+  while (halIsCounterWithin(start, timeout))

+    ;

+}

+#endif /* HAL_IMPLEMENTS_COUNTERS */

+

+/** @} */