/* 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 . */ /** * @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.*/ #define STM32_VOS_MASK (3 << 11) /**< Core voltage mask. */ #define STM32_VOS_1P8 (1 << 11) /**< Core voltage 1.8 Volts. */ #define STM32_VOS_1P5 (2 << 11) /**< Core voltage 1.5 Volts. */ #define STM32_VOS_1P2 (3 << 11) /**< Core voltage 1.2 Volts. */ /* RCC_CR register bits definitions.*/ #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. */ /* 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. */ #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. */ /* RCC_ICSCR register bits definitions.*/ #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. */ /* STM32L1xx capabilities.*/ #define STM32_HAS_ADC1 TRUE #define STM32_HAS_ADC2 FALSE #define STM32_HAS_ADC3 FALSE #define STM32_HAS_CAN1 FALSE #define STM32_HAS_CAN2 FALSE #define STM32_HAS_DAC TRUE #define STM32_HAS_DMA1 TRUE #define STM32_HAS_DMA2 FALSE #define STM32_HAS_ETH FALSE #define STM32_HAS_GPIOA TRUE #define STM32_HAS_GPIOB TRUE #define STM32_HAS_GPIOC TRUE #define STM32_HAS_GPIOD TRUE #define STM32_HAS_GPIOE TRUE #define STM32_HAS_GPIOF FALSE #define STM32_HAS_GPIOG FALSE #define STM32_HAS_GPIOH TRUE #define STM32_HAS_I2C1 TRUE #define STM32_HAS_I2C2 TRUE #define STM32_HAS_RTC TRUE #define STM32_HAS_SDIO FALSE #define STM32_HAS_SPI1 TRUE #define STM32_HAS_SPI2 TRUE #define STM32_HAS_SPI3 FALSE #define STM32_HAS_TIM1 FALSE #define STM32_HAS_TIM2 TRUE #define STM32_HAS_TIM3 TRUE #define STM32_HAS_TIM4 TRUE #define STM32_HAS_TIM5 FALSE #define STM32_HAS_TIM6 TRUE #define STM32_HAS_TIM7 TRUE #define STM32_HAS_TIM8 FALSE #define STM32_HAS_TIM9 TRUE #define STM32_HAS_TIM10 TRUE #define STM32_HAS_TIM11 TRUE #define STM32_HAS_TIM12 FALSE #define STM32_HAS_TIM13 FALSE #define STM32_HAS_TIM14 FALSE #define STM32_HAS_TIM15 FALSE #define STM32_HAS_TIM16 FALSE #define STM32_HAS_TIM17 FALSE #define STM32_HAS_USART1 TRUE #define STM32_HAS_USART2 TRUE #define STM32_HAS_USART3 TRUE #define STM32_HAS_UART3 FALSE #define STM32_HAS_UART4 FALSE #define STM32_HAS_USB TRUE #define STM32_HAS_OTG1 FALSE /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ /** * @brief Disables the PWR/RCC initialization in the HAL. */ #if !defined(STM32_NO_INIT) || defined(__DOXYGEN__) #define STM32_NO_INIT FALSE #endif /** * @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 /** * @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 /** * @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. */ #if !defined(STM32_PLLDIV_VALUE) || defined(__DOXYGEN__) #define STM32_PLLDIV_VALUE 3 #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 /** * @brief MCO clock source. */ #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 #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 /* 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 #if (STM32_HSECLK < 1000000) || (STM32_HSECLK > STM32_HSECLK_MAX) #error "STM32_HSECLK outside acceptable range (1MHz...STM32_HSECLK_MAX)" #endif #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 */ /* LSE related checks.*/ #if STM32_LSE_ENABLED #if (STM32_LSECLK == 0) #error "impossible to activate LSE" #endif #if (STM32_LSECLK < 1000) || (STM32_LSECLK > 1000000) #error "STM32_LSECLK outside acceptable range (1...1000KHz)" #endif #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 /** * @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 /** * @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 /** * @brief System clock source. */ #if STM32_NO_INIT || defined(__DOXYGEN__) #define STM32_SYSCLK 2100000 #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 #elif (STM32_SW == STM32_SW_PLL) #define STM32_SYSCLK STM32_PLLCLKOUT #else #error "invalid STM32_SW value specified" #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 /** * @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 /** * @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 #define STM32_FLASHBITS2 0x00000007 #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_ */ /** @} */