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ChibiOS/os/hal/platforms/STM32L1xx/hal_lld.h

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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@3042 35acf78f-673a-0410-8e92-d51de3d6d3f4
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011 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 STM32L1xx/hal_lld.h
* @brief STM32L1xx HAL subsystem low level driver header.
* @pre This module requires the following macros to be defined in the
* @p board.h file:
* - STM32_LSECLK.
* - STM32_HSECLK.
* .
* One of the following macros must also be defined:
* - STM32L1XX_MD for Ultra Low Power Medium-density devices.
* .
*
* @addtogroup HAL
* @{
*/
#ifndef _HAL_LLD_H_
#define _HAL_LLD_H_
/* Tricks required to make the TRUE/FALSE declaration inside the library
compatible.*/
#undef FALSE
#undef TRUE
#include "stm32l1xx.h"
#define FALSE 0
#define TRUE (!FALSE)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Platform name.
*/
#define PLATFORM_NAME "STM32L Ultra Low Power Medium Density"
#define STM32_HSICLK 16000000 /**< High speed internal clock. */
#define STM32_LSICLK 38000 /**< Low speed internal clock. */
/* PWR_CR register bits definitions.*/
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#define STM32_VOS_MASK (3 << 11) /**< Core voltage mask. */
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#define STM32_VOS_1P2 (1 << 11) /**< Core voltage 1.2 Volts. */
#define STM32_VOS_1P5 (2 << 11) /**< Core voltage 1.5 Volts. */
#define STM32_VOS_1P8 (3 << 11) /**< Core voltage 1.8 Volts. */
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/* RCC_CR register bits definitions.*/
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#define STM32_RTCPRE_MASK (3 << 29) /**< RTCPRE mask. */
#define STM32_RTCPRE_DIV2 (0 << 29) /**< HSE divided by 2. */
#define STM32_RTCPRE_DIV4 (1 << 29) /**< HSE divided by 4. */
#define STM32_RTCPRE_DIV8 (2 << 29) /**< HSE divided by 2. */
#define STM32_RTCPRE_DIV16 (3 << 29) /**< HSE divided by 16. */
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/* RCC_CFGR register bits definitions.*/
#define STM32_SW_MSI (0 << 0) /**< SYSCLK source is MSI. */
#define STM32_SW_HSI (1 << 0) /**< SYSCLK source is HSI. */
#define STM32_SW_HSE (2 << 0) /**< SYSCLK source is HSE. */
#define STM32_SW_PLL (3 << 0) /**< SYSCLK source is PLL. */
#define STM32_HPRE_DIV1 (0 << 4) /**< SYSCLK divided by 1. */
#define STM32_HPRE_DIV2 (8 << 4) /**< SYSCLK divided by 2. */
#define STM32_HPRE_DIV4 (9 << 4) /**< SYSCLK divided by 4. */
#define STM32_HPRE_DIV8 (10 << 4) /**< SYSCLK divided by 8. */
#define STM32_HPRE_DIV16 (11 << 4) /**< SYSCLK divided by 16. */
#define STM32_HPRE_DIV64 (12 << 4) /**< SYSCLK divided by 64. */
#define STM32_HPRE_DIV128 (13 << 4) /**< SYSCLK divided by 128. */
#define STM32_HPRE_DIV256 (14 << 4) /**< SYSCLK divided by 256. */
#define STM32_HPRE_DIV512 (15 << 4) /**< SYSCLK divided by 512. */
#define STM32_PPRE1_DIV1 (0 << 8) /**< HCLK divided by 1. */
#define STM32_PPRE1_DIV2 (4 << 8) /**< HCLK divided by 2. */
#define STM32_PPRE1_DIV4 (5 << 8) /**< HCLK divided by 4. */
#define STM32_PPRE1_DIV8 (6 << 8) /**< HCLK divided by 8. */
#define STM32_PPRE1_DIV16 (7 << 8) /**< HCLK divided by 16. */
#define STM32_PPRE2_DIV1 (0 << 11) /**< HCLK divided by 1. */
#define STM32_PPRE2_DIV2 (4 << 11) /**< HCLK divided by 2. */
#define STM32_PPRE2_DIV4 (5 << 11) /**< HCLK divided by 4. */
#define STM32_PPRE2_DIV8 (6 << 11) /**< HCLK divided by 8. */
#define STM32_PPRE2_DIV16 (7 << 11) /**< HCLK divided by 16. */
#define STM32_PLLSRC_HSI (0 << 16) /**< PLL clock source is HSI. */
#define STM32_PLLSRC_HSE (1 << 16) /**< PLL clock source is HSE. */
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#define STM32_MCOSEL_NOCLOCK (0 << 24) /**< No clock on MCO pin. */
#define STM32_MCOSEL_SYSCLK (1 << 24) /**< SYSCLK on MCO pin. */
#define STM32_MCOSEL_HSI (2 << 24) /**< HSI clock on MCO pin. */
#define STM32_MCOSEL_MSI (3 << 24) /**< MSI clock on MCO pin. */
#define STM32_MCOSEL_HSE (4 << 24) /**< HSE clock on MCO pin. */
#define STM32_MCOSEL_PLL (5 << 24) /**< PLL clock on MCO pin. */
#define STM32_MCOSEL_LSI (6 << 24) /**< LSI clock on MCO pin. */
#define STM32_MCOSEL_LSE (7 << 24) /**< LSE clock on MCO pin. */
#define STM32_MCOPRE_DIV1 (0 << 28) /**< MCO divided by 1. */
#define STM32_MCOPRE_DIV2 (1 << 28) /**< MCO divided by 1. */
#define STM32_MCOPRE_DIV4 (2 << 28) /**< MCO divided by 1. */
#define STM32_MCOPRE_DIV8 (3 << 28) /**< MCO divided by 1. */
#define STM32_MCOPRE_DIV16 (4 << 28) /**< MCO divided by 1. */
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/* RCC_ICSCR register bits definitions.*/
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#define STM32_MSIRANGE_MASK (7 << 13) /**< MSIRANGE field mask. */
#define STM32_MSIRANGE_64K (0 << 13) /**< 64KHz nominal. */
#define STM32_MSIRANGE_128K (1 << 13) /**< 128KHz nominal. */
#define STM32_MSIRANGE_256K (2 << 13) /**< 256KHz nominal. */
#define STM32_MSIRANGE_512K (3 << 13) /**< 512KHz nominal. */
#define STM32_MSIRANGE_1M (4 << 13) /**< 1MHz nominal. */
#define STM32_MSIRANGE_2M (5 << 13) /**< 2MHz nominal. */
#define STM32_MSIRANGE_4M (6 << 13) /**< 4MHz nominal */
/* RCC_CSR register bits definitions.*/
#define STM32_RTCSEL_MASK (3 << 16) /**< RTC source mask. */
#define STM32_RTCSEL_NOCLOCK (0 << 16) /**< No RTC source. */
#define STM32_RTCSEL_LSE (1 << 16) /**< RTC source is LSE. */
#define STM32_RTCSEL_LSI (2 << 16) /**< RTC source is LSI. */
#define STM32_RTCSEL_HSEDIV (3 << 16) /**< RTC source is HSE divided. */
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/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
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/**
* @brief Disables the PWR/RCC initialization in the HAL.
*/
#if !defined(STM32_NO_INIT) || defined(__DOXYGEN__)
#define STM32_NO_INIT FALSE
#endif
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/**
* @brief Core voltage selection.
* @note This setting affects all the performance and clock related
* settings, the maximum performance is only obtainable selecting
* the maximum voltage.
*/
#if !defined(STM32_VOS) || defined(__DOXYGEN__)
#define STM32_VOS STM32_VOS_1P8
#endif
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/**
* @brief Enables or disables the HSI clock source.
*/
#if !defined(STM32_HSI_ENABLED) || defined(__DOXYGEN__)
#define STM32_HSI_ENABLED TRUE
#endif
/**
* @brief Enables or disables the LSI clock source.
*/
#if !defined(STM32_LSI_ENABLED) || defined(__DOXYGEN__)
#define STM32_LSI_ENABLED TRUE
#endif
/**
* @brief Enables or disables the HSE clock source.
*/
#if !defined(STM32_HSE_ENABLED) || defined(__DOXYGEN__)
#define STM32_HSE_ENABLED FALSE
#endif
/**
* @brief Enables or disables the LSE clock source.
*/
#if !defined(STM32_HSE_ENABLED) || defined(__DOXYGEN__)
#define STM32_LSE_ENABLED FALSE
#endif
/**
* @brief ADC clock setting.
*/
#if !defined(STM32_ADC_CLOCK_ENABLED) || defined(__DOXYGEN__)
#define STM32_ADC_CLOCK_ENABLED TRUE
#endif
/**
* @brief USB clock setting.
*/
#if !defined(STM32_USB_CLOCK_ENABLED) || defined(__DOXYGEN__)
#define STM32_USB_CLOCK_ENABLED TRUE
#endif
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/**
* @brief MSI frequency setting.
*/
#if !defined(STM32_MSIRANGE) || defined(__DOXYGEN__)
#define STM32_MSIRANGE STM32_MSIRANGE_2M
#endif
/**
* @brief Main clock source selection.
* @note If the selected clock source is not the PLL then the PLL is not
* initialized and started.
* @note The default value is calculated for a 32MHz system clock from
* the internal 16MHz HSI clock.
*/
#if !defined(STM32_SW) || defined(__DOXYGEN__)
#define STM32_SW STM32_SW_PLL
#endif
/**
* @brief Clock source for the PLL.
* @note This setting has only effect if the PLL is selected as the
* system clock source.
* @note The default value is calculated for a 32MHz system clock from
* the internal 16MHz HSI clock.
*/
#if !defined(STM32_PLLSRC) || defined(__DOXYGEN__)
#define STM32_PLLSRC STM32_PLLSRC_HSI
#endif
/**
* @brief PLL multiplier value.
* @note The allowed values are 3, 4, 6, 8, 12, 16, 32, 48.
* @note The default value is calculated for a 32MHz system clock from
* the internal 16MHz HSI clock.
*/
#if !defined(STM32_PLLMUL_VALUE) || defined(__DOXYGEN__)
#define STM32_PLLMUL_VALUE 6
#endif
/**
* @brief PLL divider value.
* @note The allowed values are 2, 3, 4.
* @note The default value is calculated for a 32MHz system clock from
* the internal 16MHz HSI clock.
*/
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#if !defined(STM32_PLLDIV_VALUE) || defined(__DOXYGEN__)
#define STM32_PLLDIV_VALUE 3
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#endif
/**
* @brief AHB prescaler value.
* @note The default value is calculated for a 32MHz system clock from
* the internal 16MHz HSI clock.
*/
#if !defined(STM32_HPRE) || defined(__DOXYGEN__)
#define STM32_HPRE STM32_HPRE_DIV1
#endif
/**
* @brief APB1 prescaler value.
*/
#if !defined(STM32_PPRE1) || defined(__DOXYGEN__)
#define STM32_PPRE1 STM32_PPRE1_DIV1
#endif
/**
* @brief APB2 prescaler value.
*/
#if !defined(STM32_PPRE2) || defined(__DOXYGEN__)
#define STM32_PPRE2 STM32_PPRE2_DIV1
#endif
/**
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* @brief MCO clock source.
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*/
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#if !defined(STM32_MCOSEL) || defined(__DOXYGEN__)
#define STM32_MCOSEL STM32_MCOSEL_NOCLOCK
#endif
/**
* @brief MCO divider setting.
*/
#if !defined(STM32_MCOPRE) || defined(__DOXYGEN__)
#define STM32_MCOPRE STM32_MCOPRE_DIV1
#endif
/**
* @brief Clock source for the RTC/LCD.
*/
#if !defined(STM32_RTCSEL) || defined(__DOXYGEN__)
#define STM32_RTCSEL STM32_RTCSEL_LSE
#endif
/**
* @brief HSE divider toward RTC setting.
*/
#if !defined(STM32_RTCSEL) || defined(__DOXYGEN__)
#define STM32_RTCPRE STM32_RTCPRE_DIV2
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#endif
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/* Voltage related limits.*/
#if (STM32_VOS == STM32_VOS_1P8) || defined(__DOXYGEN__)
/**
* @brief Maximum HSECLK at current voltage setting.
*/
#define STM32_HSECLK_MAX 32000000
/**
* @brief Maximum SYSCLK at current voltage setting.
*/
#define STM32_SYSCLK_MAX 32000000
/**
* @brief Maximum PLLCLKOUT at current voltage setting.
*/
#define STM32_PLLCLKOUT_MAX 96000000
/**
* @brief Maximum frequency not requiring a wait state for flash accesses.
*/
#define STM32_0WS_THRESHOLD 16000000
/**
* @brief HSI availability at current voltage settings.
*/
#define STM32_HSI_AVAILABLE TRUE
#elif STM32_VOS == STM32_VOS_1P5
#define STM32_HSECLK_MAX 16000000
#define STM32_SYSCLK_MAX 16000000
#define STM32_PLLCLKOUT_MAX 48000000
#define STM32_0WS_THRESHOLD 8000000
#define STM32_HSI_AVAILABLE TRUE
#elif STM32_VOS == STM32_VOS_1P2
#define STM32_HSECLK_MAX 4000000
#define STM32_SYSCLK_MAX 4000000
#define STM32_PLLCLKOUT_MAX 24000000
#define STM32_0WS_THRESHOLD 2000000
#define STM32_HSI_AVAILABLE FALSE
#else
#error "invalid STM32_VOS value specified"
#endif
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/* HSI related checks.*/
#if STM32_HSI_ENABLED
#if !STM32_HSI_AVAILABLE
#error "impossible to activate HSI under the current voltage settings"
#endif
#else /* !STM32_HSI_ENABLED */
#if STM32_ADC_CLOCK_ENABLED || \
(STM32_SW == STM32_SW_HSI) || \
((STM32_SW == STM32_SW_PLL) && \
(STM32_PLLSRC == STM32_PLLSRC_HSI)) || \
(STM32_MCOSEL == STM32_MCOSEL_HSI) || \
((STM32_MCOSEL == STM32_MCOSEL_PLL) && \
(STM32_PLLSRC == STM32_PLLSRC_HSI))
#error "required HSI clock is not enabled"
#endif
#endif /* !STM32_HSI_ENABLED */
/* HSE related checks.*/
#if STM32_HSE_ENABLED
#if STM32_HSECLK == 0
#error "impossible to activate HSE"
#endif
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#if (STM32_HSECLK < 1000000) || (STM32_HSECLK > STM32_HSECLK_MAX)
#error "STM32_HSECLK outside acceptable range (1MHz...STM32_HSECLK_MAX)"
#endif
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#else /* !#if STM32_HSE_ENABLED */
#if (STM32_SW == STM32_SW_HSE) || \
((STM32_SW == STM32_SW_PLL) && \
(STM32_PLLSRC == STM32_PLLSRC_HSE)) || \
(STM32_MCOSEL == STM32_MCOSEL_HSE) || \
((STM32_MCOSEL == STM32_MCOSEL_PLL) && \
(STM32_PLLSRC == STM32_PLLSRC_HSE)) || \
(STM_RTC_SOURCE == STM32_RTCSEL_HSEDIV)
#error "required HSE clock is not enabled"
#endif
#endif /* !#if STM32_HSE_ENABLED */
/* LSI related checks.*/
#if STM32_LSI_ENABLED
#else /* !STM32_LSI_ENABLED */
#if STM_RTCCLK == STM32_LSICLK
#error "required LSI clock is not enabled"
#endif
#endif /* !STM32_LSI_ENABLED */
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/* LSE related checks.*/
#if STM32_LSE_ENABLED
#if (STM32_LSECLK == 0)
#error "impossible to activate LSE"
#endif
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#if (STM32_LSECLK < 1000) || (STM32_LSECLK > 1000000)
#error "STM32_LSECLK outside acceptable range (1...1000KHz)"
#endif
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#else /* !#if STM32_LSE_ENABLED */
#if STM_RTCCLK == STM32_LSECLK
#error "required LSE clock is not enabled"
#endif
#endif /* !#if STM32_LSE_ENABLED */
/* PLL related checks.*/
#if STM32_USB_CLOCK_ENABLED || \
(STM32_SW == STM32_SW_PLL) || \
(STM32_MCOSEL == STM32_MCOSEL_PLL) || \
defined(__DOXYGEN__)
/**
* @brief PLL activation flag.
*/
#define STM32_ACTIVATE_PLL TRUE
#else
#define STM32_ACTIVATE_PLL FALSE
#endif
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/**
* @brief PLLMUL field.
*/
#if (STM32_PLLMUL_VALUE == 3) || defined(__DOXYGEN__)
#define STM32_PLLMUL (0 << 18)
#elif STM32_PLLMUL_VALUE == 4
#define STM32_PLLMUL (1 << 18)
#elif STM32_PLLMUL_VALUE == 6
#define STM32_PLLMUL (2 << 18)
#elif STM32_PLLMUL_VALUE == 8
#define STM32_PLLMUL (3 << 18)
#elif STM32_PLLMUL_VALUE == 12
#define STM32_PLLMUL (4 << 18)
#elif STM32_PLLMUL_VALUE == 16
#define STM32_PLLMUL (5 << 18)
#elif STM32_PLLMUL_VALUE == 24
#define STM32_PLLMUL (6 << 18)
#elif STM32_PLLMUL_VALUE == 32
#define STM32_PLLMUL (7 << 18)
#elif STM32_PLLMUL_VALUE == 48
#define STM32_PLLMUL (8 << 18)
#else
#error "invalid STM32_PLLMUL_VALUE value specified"
#endif
/**
* @brief PLLDIV field.
*/
#if (STM32_PLLDIV_VALUE == 2) || defined(__DOXYGEN__)
#define STM32_PLLDIV (1 << 22)
#elif STM32_PLLDIV_VALUE == 3
#define STM32_PLLDIV (2 << 22)
#elif STM32_PLLDIV_VALUE == 4
#define STM32_PLLDIV (3 << 22)
#else
#error "invalid STM32_PLLDIV_VALUE value specified"
#endif
/**
* @brief PLL input clock frequency.
*/
#if (STM32_PLLSRC == STM32_PLLSRC_HSE) || defined(__DOXYGEN__)
#define STM32_PLLCLKIN STM32_HSECLK
#elif STM32_PLLSRC == STM32_PLLSRC_HSI
#define STM32_PLLCLKIN STM32_HSICLK
#else
#error "invalid STM32_PLLSRC value specified"
#endif
/* PLL input frequency range check.*/
#if (STM32_PLLCLKIN < 2000000) || (STM32_PLLCLKIN > 24000000)
#error "STM32_PLLCLKIN outside acceptable range (2...24MHz)"
#endif
/**
* @brief PLL VCO frequency.
*/
#define STM32_PLLVCO (STM32_PLLCLKIN * STM32_PLLMUL_VALUE)
/* PLL output frequency range check.*/
#if (STM32_PLLVCO < 6000000) || (STM32_PLLVCO > 96000000)
#error "STM32_PLLVCO outside acceptable range (6...96MHz)"
#endif
/**
* @brief PLL output clock frequency.
*/
#define STM32_PLLCLKOUT (STM32_PLLVCO / STM32_PLLDIV_VALUE)
/* PLL output frequency range check.*/
#if (STM32_PLLCLKOUT < 2000000) || (STM32_PLLCLKOUT > 32000000)
#error "STM32_PLLCLKOUT outside acceptable range (2...32MHz)"
#endif
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/**
* @brief MSI frequency.
* @note Values are taken from the STM8Lxx datasheet.
*/
#if STM32_MSIRANGE == STM32_MSIRANGE_64K
#define STM32_MSICLK 65500
#elif STM32_MSIRANGE == STM32_MSIRANGE_128K
#define STM32_MSICLK 131000
#elif STM32_MSIRANGE == STM32_MSIRANGE_256K
#define STM32_MSICLK 262000
#elif STM32_MSIRANGE == STM32_MSIRANGE_512K
#define STM32_MSICLK 524000
#elif STM32_MSIRANGE == STM32_MSIRANGE_1M
#define STM32_MSICLK 1050000
#elif STM32_MSIRANGE == STM32_MSIRANGE_2M
#define STM32_MSICLK 2100000
#elif STM32_MSIRANGE == STM32_MSIRANGE_4M
#define STM32_MSICLK 4200000
#else
#error "invalid STM32_MSIRANGE value specified"
#endif
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/**
* @brief System clock source.
*/
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#if STM32_NO_INIT || defined(__DOXYGEN__)
#define STM32_SYSCLK 2100000
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#elif (STM32_SW == STM32_SW_MSI)
#define STM32_SYSCLK STM32_MSICLK
#elif (STM32_SW == STM32_SW_HSI)
#define STM32_SYSCLK STM32_HSICLK
#elif (STM32_SW == STM32_SW_HSE)
#define STM32_SYSCLK STM32_HSECLK
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#elif (STM32_SW == STM32_SW_PLL)
#define STM32_SYSCLK STM32_PLLCLKOUT
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#else
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#error "invalid STM32_SW value specified"
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#endif
/* Check on the system clock.*/
#if STM32_SYSCLK > STM32_SYSCLK_MAX
#error "STM32_SYSCLK above maximum rated frequency (STM32_SYSCLK_MAX)"
#endif
/**
* @brief AHB frequency.
*/
#if (STM32_HPRE == STM32_HPRE_DIV1) || defined(__DOXYGEN__)
#define STM32_HCLK (STM32_SYSCLK / 1)
#elif STM32_HPRE == STM32_HPRE_DIV2
#define STM32_HCLK (STM32_SYSCLK / 2)
#elif STM32_HPRE == STM32_HPRE_DIV4
#define STM32_HCLK (STM32_SYSCLK / 4)
#elif STM32_HPRE == STM32_HPRE_DIV8
#define STM32_HCLK (STM32_SYSCLK / 8)
#elif STM32_HPRE == STM32_HPRE_DIV16
#define STM32_HCLK (STM32_SYSCLK / 16)
#elif STM32_HPRE == STM32_HPRE_DIV64
#define STM32_HCLK (STM32_SYSCLK / 64)
#elif STM32_HPRE == STM32_HPRE_DIV128
#define STM32_HCLK (STM32_SYSCLK / 128)
#elif STM32_HPRE == STM32_HPRE_DIV256
#define STM32_HCLK (STM32_SYSCLK / 256)
#elif STM32_HPRE == STM32_HPRE_DIV512
#define STM32_HCLK (STM32_SYSCLK / 512)
#else
#error "invalid STM32_HPRE value specified"
#endif
/* AHB frequency check.*/
#if STM32_HCLK > STM32_SYSCLK_MAX
#error "STM32_HCLK exceeding maximum frequency (STM32_SYSCLK_MAX)"
#endif
/**
* @brief APB1 frequency.
*/
#if (STM32_PPRE1 == STM32_PPRE1_DIV1) || defined(__DOXYGEN__)
#define STM32_PCLK1 (STM32_HCLK / 1)
#elif STM32_PPRE1 == STM32_PPRE1_DIV2
#define STM32_PCLK1 (STM32_HCLK / 2)
#elif STM32_PPRE1 == STM32_PPRE1_DIV4
#define STM32_PCLK1 (STM32_HCLK / 4)
#elif STM32_PPRE1 == STM32_PPRE1_DIV8
#define STM32_PCLK1 (STM32_HCLK / 8)
#elif STM32_PPRE1 == STM32_PPRE1_DIV16
#define STM32_PCLK1 (STM32_HCLK / 16)
#else
#error "invalid STM32_PPRE1 value specified"
#endif
/* APB1 frequency check.*/
#if STM32_PCLK2 > STM32_SYSCLK_MAX
#error "STM32_PCLK1 exceeding maximum frequency (STM32_SYSCLK_MAX)"
#endif
/**
* @brief APB2 frequency.
*/
#if (STM32_PPRE2 == STM32_PPRE2_DIV1) || defined(__DOXYGEN__)
#define STM32_PCLK2 (STM32_HCLK / 1)
#elif STM32_PPRE2 == STM32_PPRE2_DIV2
#define STM32_PCLK2 (STM32_HCLK / 2)
#elif STM32_PPRE2 == STM32_PPRE2_DIV4
#define STM32_PCLK2 (STM32_HCLK / 4)
#elif STM32_PPRE2 == STM32_PPRE2_DIV8
#define STM32_PCLK2 (STM32_HCLK / 8)
#elif STM32_PPRE2 == STM32_PPRE2_DIV16
#define STM32_PCLK2 (STM32_HCLK / 16)
#else
#error "invalid STM32_PPRE2 value specified"
#endif
/* APB2 frequency check.*/
#if STM32_PCLK2 > STM32_SYSCLK_MAX
#error "STM32_PCLK2 exceeding maximum frequency (STM32_SYSCLK_MAX)"
#endif
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/**
* @brief MCO divider clock.
*/
#if (STM32_MCOSEL == STM32_MCOSEL_NOCLOCK) || defined(__DOXYGEN__)
#define STM_MCODIVCLK 0
#elif STM32_MCOSEL == STM32_MCOSEL_HSI
#define STM_MCODIVCLK STM32_HSICLK
#elif STM32_MCOSEL == STM32_MCOSEL_MSI
#define STM_MCODIVCLK STM32_MSICLK
#elif STM32_MCOSEL == STM32_MCOSEL_HSE
#define STM_MCODIVCLK STM32_HSECLK
#elif STM32_MCOSEL == STM32_MCOSEL_PLL
#define STM_MCODIVCLK STM32_PLLCLKOUT
#elif STM32_MCOSEL == STM32_MCOSEL_LSI
#define STM_MCODIVCLK STM32_LSICLK
#elif STM32_MCOSEL == STM32_MCOSEL_LSE
#define STM_MCODIVCLK STM32_LSECLK
#else
#error "invalid STM32_MCOSEL value specified"
#endif
/**
* @brief MCO output pin clock.
*/
#if (STM32_MCOPRE == STM32_MCOPRE_DIV1) || defined(__DOXYGEN__)
#define STM_MCOCLK STM_MCODIVCLK
#elif STM32_MCOPRE == STM32_MCOPRE_DIV2
#define STM_MCOCLK (STM_MCODIVCLK / 2)
#elif STM32_MCOPRE == STM32_MCOPRE_DIV4
#define STM_MCOCLK (STM_MCODIVCLK / 4)
#elif STM32_MCOPRE == STM32_MCOPRE_DIV8
#define STM_MCOCLK (STM_MCODIVCLK / 8)
#elif STM32_MCOPRE == STM32_MCOPRE_DIV16
#define STM_MCOCLK (STM_MCODIVCLK / 16)
#else
#error "invalid STM32_MCOPRE value specified"
#endif
/**
* @brief HSE divider toward RTC clock.
*/
#if (STM32_RTCPRE == STM32_RTCPRE_DIV2) || defined(__DOXYGEN__)
#define STM32_HSEDIVCLK (HSECLK / 2)
#elif (STM32_RTCPRE == STM32_RTCPRE_DIV4) || defined(__DOXYGEN__)
#define STM32_HSEDIVCLK (HSECLK / 4)
#elif (STM32_RTCPRE == STM32_RTCPRE_DIV8) || defined(__DOXYGEN__)
#define STM32_HSEDIVCLK (HSECLK / 8)
#elif (STM32_RTCPRE == STM32_RTCPRE_DIV16) || defined(__DOXYGEN__)
#define STM32_HSEDIVCLK (HSECLK / 16)
#else
#error "invalid STM32_RTCPRE value specified"
#endif
/**
* @brief RTC/LCD clock.
*/
#if (STM32_RTCSEL == STM32_RTCSEL_NOCLOCK) || defined(__DOXYGEN__)
#define STM_RTCCLK 0
#elif STM32_RTCSEL == STM32_RTCSEL_LSE
#define STM_RTCCLK STM32_LSECLK
#elif STM32_RTCSEL == STM32_RTCSEL_LSI
#define STM_RTCCLK STM32_LSICLK
#elif STM32_RTCSEL == STM32_RTCSEL_HSEDIV
#define STM_RTCCLK STM32_HSEDIVCLK
#else
#error "invalid STM32_RTCSEL value specified"
#endif
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/**
* @brief ADC frequency.
*/
#define STM32_ADCCLK STM32_HSICLK
/**
* @brief USB frequency.
*/
#define STM32_USBCLK (STM32_PLLVCO / 2)
/**
* @brief Timers 2, 3, 4, 6, 7 clock.
*/
#if (STM32_PPRE1 == STM32_PPRE1_DIV1) || defined(__DOXYGEN__)
#define STM32_TIMCLK1 (STM32_PCLK1 * 1)
#else
#define STM32_TIMCLK1 (STM32_PCLK1 * 2)
#endif
/**
* @brief Timers 9, 10, 11 clock.
*/
#if (STM32_PPRE2 == STM32_PPRE2_DIV1) || defined(__DOXYGEN__)
#define STM32_TIMCLK2 (STM32_PCLK2 * 1)
#else
#define STM32_TIMCLK2 (STM32_PCLK2 * 2)
#endif
/**
* @brief Flash settings.
*/
#if (STM32_HCLK <= STM32_0WS_THRESHOLD) || defined(__DOXYGEN__)
#define STM32_FLASHBITS1 0x00000000
#else
#define STM32_FLASHBITS1 0x00000004
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#define STM32_FLASHBITS2 0x00000007
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#endif
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
/* STM32 DMA support code.*/
#include "stm32_dma.h"
#ifdef __cplusplus
extern "C" {
#endif
void hal_lld_init(void);
void stm32_clock_init(void);
#ifdef __cplusplus
}
#endif
#endif /* _HAL_LLD_H_ */
/** @} */