git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@2380 35acf78f-673a-0410-8e92-d51de3d6d3f4

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diff --git a/os/hal/platforms/STM8S/hal_lld.h b/os/hal/platforms/STM8S/hal_lld.h
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+++ b/os/hal/platforms/STM8S/hal_lld.h
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+/*

+    ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010 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    STM8/hal_lld.h

+ * @brief   STM8 HAL subsystem low level driver source.

+ * @pre     This module requires the following macros to be defined in the

+ *          @p board.h file:

+ *          - HSECLK (@p 0 if disabled or frequency in Hertz).

+ *          .

+ *          One of the following macros must also be defined:

+ *          - STM8S103.

+ *          - STM8S105.

+ *          - STM8S207.

+ *          - STM8S208.

+ *          - STM8S903.

+ *          .

+ *

+ * @addtogroup HAL

+ * @{

+ */

+

+#ifndef _HAL_LLD_H_

+#define _HAL_LLD_H_

+

+#include "stm8.h"

+

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

+/* Driver constants.                                                         */

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

+

+/**

+ * @brief   Platform name.

+ */

+#define PLATFORM_NAME       "STM8S"

+

+#define LSICLK              128000      /**< Low speed internal clock.      */

+#define HSICLK              16000000    /**< High speed internal clock.     */

+

+#define CLK_SYSSEL_HSI      0xE1        /**< HSI clock selector.            */

+#define CLK_SYSSEL_LSI      0xD2        /**< LSI clock selector.            */

+#define CLK_SYSSEL_HSE      0xB4        /**< HSE clock selector.            */

+

+#define CLK_HSI_DIV1        0           /**< HSI clock divided by 1.        */

+#define CLK_HSI_DIV2        1           /**< HSI clock divided by 2.        */

+#define CLK_HSI_DIV4        2           /**< HSI clock divided by 4.        */

+#define CLK_HSI_DIV8        3           /**< HSI clock divided by 8.        */

+

+#define CLK_CPU_DIV1        0           /**< CPU clock divided by 1.        */

+#define CLK_CPU_DIV2        1           /**< CPU clock divided by 2.        */

+#define CLK_CPU_DIV4        2           /**< CPU clock divided by 4.        */

+#define CLK_CPU_DIV8        3           /**< CPU clock divided by 8.        */

+#define CLK_CPU_DIV16       4           /**< CPU clock divided by 16.       */

+#define CLK_CPU_DIV32       5           /**< CPU clock divided by 32.       */

+#define CLK_CPU_DIV64       6           /**< CPU clock divided by 64.       */

+#define CLK_CPU_DIV128      7           /**< CPU clock divided by 128.      */

+

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

+/* Driver pre-compile time settings.                                         */

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

+

+/**

+ * @brief   Disables the clock initialization in the HAL.

+ */

+#if !defined(STM8_NO_CLOCK_INIT) || defined(__DOXYGEN__)

+#define STM8_NO_CLOCK_INIT          FALSE

+#endif

+

+/**

+ * @brief   Enables or disables the HSI clock source.

+ */

+#if !defined(STM8_HSI_ENABLED) || defined(__DOXYGEN__)

+#define STM8_HSI_ENABLED            FALSE

+#endif

+

+/**

+ * @brief   Enables or disables the LSI clock source.

+ */

+#if !defined(STM8_LSI_ENABLED) || defined(__DOXYGEN__)

+#define STM8_LSI_ENABLED            TRUE

+#endif

+

+/**

+ * @brief   Enables or disables the HSE clock source.

+ */

+#if !defined(STM8_HSE_ENABLED) || defined(__DOXYGEN__)

+#define STM8_HSE_ENABLED            TRUE

+#endif

+

+/**

+ * @brief   Clock source setting.

+ */

+#if !defined(STM8_SYSCLK_SOURCE) || defined(__DOXYGEN__)

+#define STM8_SYSCLK_SOURCE          CLK_SYSSEL_HSE

+#endif

+

+/**

+ * @brief   HSI clock divider.

+ */

+#if !defined(STM8_HSI_DIVIDER) || defined(__DOXYGEN__)

+#define STM8_HSI_DIVIDER            CLK_HSI_DIV8

+#endif

+

+/**

+ * @brief   CPU clock divider.

+ */

+#if !defined(STM8_CPU_DIVIDER) || defined(__DOXYGEN__)

+#define STM8_CPU_DIVIDER            CLK_CPU_DIV1

+#endif

+

+/**

+ * @brief   bxCAN divider value.

+ */

+#if !defined(STM8_CAN_DIVIDER_VALUE) || defined(__DOXYGEN__)

+#define STM8_CAN_DIVIDER_VALUE      1

+#endif

+

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

+/* Derived constants and error checks.                                       */

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

+

+#if (STM8_HSI_DIVIDER != CLK_HSI_DIV1)  &&                                  \

+    (STM8_HSI_DIVIDER != CLK_HSI_DIV2)  &&                                  \

+    (STM8_HSI_DIVIDER != CLK_HSI_DIV4)  &&                                  \

+    (STM8_HSI_DIVIDER != CLK_HSI_DIV8)

+#error "specified invalid HSI divider"

+#endif

+

+#if (STM8_CPU_DIVIDER != CLK_CPU_DIV1)  &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV2)  &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV4)  &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV8)  &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV16) &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV32) &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV64) &&                                  \

+    (STM8_CPU_DIVIDER != CLK_CPU_DIV128)

+#error "specified invalid CPU divider"

+#endif

+

+#if (STM8_CAN_DIVIDER_VALUE < 1) || (STM8_CAN_DIVIDER_VALUE > 8)

+#error "specified invalid CAN divider value"

+#endif

+

+#if STM8_HSE_ENABLED && (HSECLK == 0)

+#error "impossible to activate HSE"

+#endif

+

+#if !STM8_HSI_ENABLED && (STM8_SYSCLK_SOURCE == CLK_SYSSEL_HSI)

+#error "requested HSI clock is not enabled"

+#endif

+

+#if !STM8_LSI_ENABLED && (STM8_SYSCLK_SOURCE == CLK_SYSSEL_LSI)

+#error "requested LSI clock is not enabled"

+#endif

+

+#if !STM8_HSE_ENABLED && (STM8_SYSCLK_SOURCE == CLK_SYSSEL_HSE)

+#error "requested HSE clock is not enabled"

+#endif

+

+/**

+ * @brief   System clock.

+ */

+#if STM8L_NO_CLOCK_INIT || defined(__DOXYGEN__)

+#define SYSCLK                      (HSICLK / 8)

+#elif STM8_SYSCLK_SOURCE == CLK_SYSSEL_HSI

+#define SYSCLK                      (HSICLK / (1 << STM8_HSI_DIVIDER))

+#elif STM8_SYSCLK_SOURCE == CLK_SYSSEL_LSI

+#define SYSCLK                      LSICLK

+#elif STM8_SYSCLK_SOURCE == CLK_SYSSEL_HSE

+#define SYSCLK                      HSECLK

+#else

+#error "specified invalid clock source"

+#endif

+

+/**

+ * @brief   CPU clock.

+ * @details On the STM8S the CPU clock can be programmed to be a fraction of

+ *          the system clock.
+ */

+#define CPUCLK                      (SYSCLK / (1 << STM8_CPU_DIVIDER))

+

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

+/* Driver data structures and types.                                         */

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

+

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

+/* Driver macros.                                                            */

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

+

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

+/* External declarations.                                                    */

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

+

+#ifdef __cplusplus

+extern "C" {

+#endif

+  void hal_lld_init(void);

+#ifdef __cplusplus

+}

+#endif

+

+#endif /* _HAL_LLD_H_ */

+

+/** @} */