222 lines
7.2 KiB
C
222 lines
7.2 KiB
C
/*
|
|
ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
/**
|
|
* @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_ */
|
|
|
|
/** @} */
|