/************************************************************************************ * configs/olimex-stm32-p107/include/board.h * * Copyright (C) 2009, 2012 Gregory Nutt. All rights reserved. * Author: Gregory Nutt * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name NuttX nor the names of its contributors may be * used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * ************************************************************************************/ /************************************************************************************ * Included Files ************************************************************************************/ #include #ifndef __ASSEMBLY__ # include #endif #include "stm32_rcc.h" #include "stm32_sdio.h" #include "stm32_internal.h" /************************************************************************************ * Pre-processor Definitions ************************************************************************************/ /* Clocking *************************************************************************/ /* On-board crystal frequency is 25MHz (HSE) */ #define STM32_BOARD_XTAL 25000000ul /* PLL ouput is 72MHz */ #define STM32_PLL_PREDIV2 RCC_CFGR2_PREDIV2d5 /* 25MHz / 5 => 5MHz */ #define STM32_PLL_PLL2MUL RCC_CFGR2_PLL2MULx8 /* 5MHz * 8 => 40MHz */ #define STM32_PLL_PREDIV1 RCC_CFGR2_PREDIV1d5 /* 40MHz / 5 => 8MHz */ #define STM32_PLL_PLLMUL RCC_CFGR_PLLMUL_CLKx9 /* 8MHz * 9 => 72Mhz */ #define STM32_PLL_FREQUENCY (72000000) /* SYCLLK and HCLK are the PLL frequency */ #define STM32_SYSCLK_FREQUENCY STM32_PLL_FREQUENCY #define STM32_HCLK_FREQUENCY STM32_PLL_FREQUENCY #define STM32_BOARD_HCLK STM32_HCLK_FREQUENCY /* same as above, to satisfy compiler */ /* APB2 clock (PCLK2) is HCLK (72MHz) */ #define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLK #define STM32_PCLK2_FREQUENCY STM32_HCLK_FREQUENCY #define STM32_APB2_CLKIN (STM32_PCLK2_FREQUENCY) /* Timers 2-7, 12-14 */ /* APB2 timers 1 and 8 will receive PCLK2. */ #define STM32_APB2_TIM1_CLKIN (STM32_PCLK2_FREQUENCY) #define STM32_APB2_TIM8_CLKIN (STM32_PCLK2_FREQUENCY) /* APB1 clock (PCLK1) is HCLK/2 (36MHz) */ #define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLKd2 #define STM32_PCLK1_FREQUENCY (STM32_HCLK_FREQUENCY/2) /* APB1 timers 2-4 will be twice PCLK1 (I presume the remaining will receive PCLK1) */ #define STM32_APB1_TIM2_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM3_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM4_CLKIN (2*STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM5_CLKIN (STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM6_CLKIN (STM32_PCLK1_FREQUENCY) #define STM32_APB1_TIM7_CLKIN (STM32_PCLK1_FREQUENCY) /* MCO output driven by PLL3. From above, we already have PLL3 input frequency as: * * STM32_PLL_PREDIV2 = 5, 25MHz / 5 => 5MHz */ #if defined(CONFIG_STM32_MII_MCO) || defined(CONFIG_STM32_RMII_MCO) # define BOARD_CFGR_MCO_SOURCE RCC_CFGR_PLL3CLK /* Source: PLL3 */ # define STM32_PLL_PLL3MUL RCC_CFGR2_PLL3MULx10 /* MCO 5MHz * 10 = 50MHz */ #endif /************************************************************************************ * Public Function Prototypes ************************************************************************************/ /************************************************************************************ * Name: stm32_boardinitialize * * Description: * All STM32 architectures must provide the following entry point. This entry point * is called early in the intitialization -- after all memory has been configured * and mapped but before any devices have been initialized. * ************************************************************************************/ void stm32_boardinitialize(void);