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| author | theShed <theShed@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-03-07 15:00:21 +0000 |
|---|---|---|
| committer | theShed <theShed@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-03-07 15:00:21 +0000 |
| commit | 09d8d2dfdc588422c7353314ab1f0fe61305b6b5 (patch) | |
| tree | 4fea43efde8b45905f7cda1a68fdda0c158d780f /os/hal/platforms/LPC8xx/hal_lld.h | |
| parent | d2e3d96b8d5305c9e74a762b22abe403dd726ec2 (diff) | |
| download | ChibiOS-09d8d2dfdc588422c7353314ab1f0fe61305b6b5.tar.gz ChibiOS-09d8d2dfdc588422c7353314ab1f0fe61305b6b5.tar.bz2 ChibiOS-09d8d2dfdc588422c7353314ab1f0fe61305b6b5.zip | |
Initial LPC8xx port
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5376 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/hal/platforms/LPC8xx/hal_lld.h')
| -rw-r--r-- | os/hal/platforms/LPC8xx/hal_lld.h | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/os/hal/platforms/LPC8xx/hal_lld.h b/os/hal/platforms/LPC8xx/hal_lld.h new file mode 100644 index 000000000..ca7cccd5a --- /dev/null +++ b/os/hal/platforms/LPC8xx/hal_lld.h @@ -0,0 +1,225 @@ +/*
+ 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 LPC8xx/hal_lld.h
+ * @brief HAL subsystem low level driver header template.
+ *
+ * @addtogroup HAL
+ * @{
+ */
+
+#ifndef _HAL_LLD_H_
+#define _HAL_LLD_H_
+
+#include "LPC8xx.h"
+#include "nvic.h"
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
+/**
+ * @brief Defines the support for realtime counters in the HAL.
+ */
+#define HAL_IMPLEMENTS_COUNTERS FALSE
+
+/**
+ * @brief Platform name.
+ */
+#define PLATFORM_NAME "LPC8xx"
+
+#define IRCOSCCLK 12000000 /**< High speed internal clock. */
+#define WDGOSCCLK ??????? /**< Watchdog internal clock. */
+
+#define SYSPLLCLKSEL_IRCOSC 0 /**< Internal RC oscillator
+ clock source. */
+#define SYSPLLCLKSEL_SYSOSC 1 /**< System oscillator clock
+ source. */
+#define SYSPLLCLKSEL_CLKIN 3 /**< External CLKIN clock
+ source. */
+
+#define SYSMAINCLKSEL_IRCOSC 0 /**< Clock source is IRC. */
+#define SYSMAINCLKSEL_PLLIN 1 /**< Clock source is PLLIN. */
+#define SYSMAINCLKSEL_WDGOSC 2 /**< Clock source is WDGOSC. */
+#define SYSMAINCLKSEL_PLLOUT 3 /**< Clock source is PLLOUT. */
+
+/*===========================================================================*/
+/* Driver pre-compile time settings. */
+/*===========================================================================*/
+
+/**
+ * @brief System PLL clock source.
+ */
+#if !defined(LPC8xx_PLLCLK_SOURCE) || defined(__DOXYGEN__)
+#define LPC8xx_PLLCLK_SOURCE SYSPLLCLKSEL_IRCOSC
+#endif
+
+/**
+ * @brief System PLL multiplier.
+ * @note The value must be in the 1..32 range and the final frequency
+ * must not exceed the CCO ratings.
+ */
+#if !defined(LPC8xx_SYSPLL_MUL) || defined(__DOXYGEN__)
+#define LPC8xx_SYSPLL_MUL 4
+#endif
+
+/**
+ * @brief System PLL divider.
+ * @note The value must be chosen between (2, 4, 8, 16).
+ */
+#if !defined(LPC8xx_SYSPLL_DIV) || defined(__DOXYGEN__)
+#define LPC8xx_SYSPLL_DIV 4
+#endif
+
+/**
+ * @brief System main clock source.
+ */
+#if !defined(LPC8xx_MAINCLK_SOURCE) || defined(__DOXYGEN__)
+#define LPC8xx_MAINCLK_SOURCE SYSMAINCLKSEL_PLLOUT
+#endif
+
+/**
+ * @brief AHB clock divider.
+ * @note The value must be chosen between (1...255).
+ */
+#if !defined(LPC8xx_SYSABHCLK_DIV) || defined(__DOXYGEN__)
+#define LPC8xx_SYSABHCLK_DIV 1
+#endif
+
+/*===========================================================================*/
+/* Derived constants and error checks. */
+/*===========================================================================*/
+
+/**
+ * @brief Calculated SYSOSCCTRL setting.
+ */
+#if (SYSOSCCLK < 18000000) || defined(__DOXYGEN__)
+#define LPC8xx_SYSOSCCTRL 0
+#else
+#define LPC8xx_SYSOSCCTRL 2
+#endif
+
+/**
+ * @brief PLL input clock frequency.
+ */
+#if (LPC8xx_PLLCLK_SOURCE == SYSPLLCLKSEL_SYSOSC) || defined(__DOXYGEN__)
+#define LPC8xx_SYSPLLCLKIN SYSOSCCLK
+#elif LPC8xx_PLLCLK_SOURCE == SYSPLLCLKSEL_IRCOSC
+#define LPC8xx_SYSPLLCLKIN IRCOSCCLK
+#elif LPC8xx_PLLCLK_SOURCE == SYSPLLCLKSEL_CLKIN
+#define LPC8xx_SYSPLLCLKIN CLKINCLK
+#else
+#error "invalid LPC8xx_PLLCLK_SOURCE clock source specified"
+#endif
+
+/**
+ * @brief MSEL mask in SYSPLLCTRL register.
+ */
+#if (LPC8xx_SYSPLL_MUL >= 1) && (LPC8xx_SYSPLL_MUL <= 32) || \
+ defined(__DOXYGEN__)
+#define LPC8xx_SYSPLLCTRL_MSEL (LPC8xx_SYSPLL_MUL - 1)
+#else
+#error "LPC8xx_SYSPLL_MUL out of range (1...32)"
+#endif
+
+/**
+ * @brief PSEL mask in SYSPLLCTRL register.
+ */
+#if (LPC8xx_SYSPLL_DIV == 2) || defined(__DOXYGEN__)
+#define LPC8xx_SYSPLLCTRL_PSEL (0 << 5)
+#elif LPC8xx_SYSPLL_DIV == 4
+#define LPC8xx_SYSPLLCTRL_PSEL (1 << 5)
+#elif LPC8xx_SYSPLL_DIV == 8
+#define LPC8xx_SYSPLLCTRL_PSEL (2 << 5)
+#elif LPC8xx_SYSPLL_DIV == 16
+#define LPC8xx_SYSPLLCTRL_PSEL (3 << 5)
+#else
+#error "invalid LPC8xx_SYSPLL_DIV value (2,4,8,16)"
+#endif
+
+/**
+ * @brief CCO frequency.
+ */
+#define LPC8xx_SYSPLLCCO (LPC8xx_SYSPLLCLKIN * LPC8xx_SYSPLL_MUL * \
+ LPC8xx_SYSPLL_DIV)
+
+#if (LPC8xx_SYSPLLCCO < 156000000) || (LPC8xx_SYSPLLCCO > 320000000)
+#error "CCO frequency out of the acceptable range (156...320MHz)"
+#endif
+
+/**
+ * @brief PLL output clock frequency.
+ */
+#define LPC8xx_SYSPLLCLKOUT (LPC8xx_SYSPLLCCO / LPC8xx_SYSPLL_DIV)
+
+#if (LPC8xx_MAINCLK_SOURCE == SYSMAINCLKSEL_IRCOSC) || defined(__DOXYGEN__)
+#define LPC8xx_MAINCLK IRCOSCCLK
+#elif LPC8xx_MAINCLK_SOURCE == SYSMAINCLKSEL_PLLIN
+#define LPC8xx_MAINCLK LPC8xx_SYSPLLCLKIN
+#elif LPC8xx_MAINCLK_SOURCE == SYSMAINCLKSEL_WDGOSC
+#define LPC8xx_MAINCLK WDGOSCCLK
+#elif LPC8xx_MAINCLK_SOURCE == SYSMAINCLKSEL_PLLOUT
+#define LPC8xx_MAINCLK LPC8xx_SYSPLLCLKOUT
+#else
+#error "invalid LPC8xx_MAINCLK_SOURCE clock source specified"
+#endif
+
+/**
+ * @brief AHB clock.
+ */
+#define LPC8xx_SYSCLK (LPC8xx_MAINCLK / LPC8xx_SYSABHCLK_DIV)
+#if LPC8xx_SYSCLK > 30000000
+#error "AHB clock frequency out of the acceptable range (30MHz max)"
+#endif
+
+/**
+ * @brief Flash wait states.
+ */
+#if (LPC8xx_SYSCLK <= 20000000) || defined(__DOXYGEN__)
+#define LPC8xx_FLASHCFG_FLASHTIM 0
+#else
+#define LPC8xx_FLASHCFG_FLASHTIM 1
+#endif
+
+/*===========================================================================*/
+/* Driver data structures and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver macros. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* External declarations. */
+/*===========================================================================*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+ void hal_lld_init(void);
+ void lpc8xx_clock_init(void);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _HAL_LLD_H_ */
+
+/** @} */
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