2012-08-10 19:07:02 +02:00
|
|
|
/************************************************************************************
|
|
|
|
* configs/olimex-stm32-p107/include/board.h
|
|
|
|
*
|
|
|
|
* Copyright (C) 2009, 2012 Gregory Nutt. All rights reserved.
|
|
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
|
|
*
|
|
|
|
* 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 <nuttx/config.h>
|
|
|
|
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
# include <stdint.h>
|
|
|
|
#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
|
2012-09-22 17:12:50 +02:00
|
|
|
|
|
|
|
/* 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 */
|
2012-08-10 19:07:02 +02:00
|
|
|
#define STM32_PLL_FREQUENCY (72000000)
|
|
|
|
|
2012-09-22 17:12:50 +02:00
|
|
|
/* SYCLLK and HCLK are the PLL frequency */
|
|
|
|
|
|
|
|
#define STM32_SYSCLK_FREQUENCY STM32_PLL_FREQUENCY
|
2012-08-10 19:07:02 +02:00
|
|
|
#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)
|
|
|
|
|
2012-09-22 21:19:56 +02:00
|
|
|
/* MCO output driven by PLL3. From above, we already have PLL3 input frequency as:
|
|
|
|
*
|
|
|
|
* STM32_PLL_PREDIV2 = 5, 25MHz / 5 => 5MHz
|
|
|
|
*/
|
|
|
|
|
2012-09-22 17:12:50 +02:00
|
|
|
#if defined(CONFIG_STM32_MII_MCO) || defined(CONFIG_STM32_RMII_MCO)
|
2012-09-22 21:19:56 +02:00
|
|
|
# define BOARD_CFGR_MCO_SOURCE RCC_CFGR_PLL3CLK /* Source: PLL3 */
|
|
|
|
# define STM32_PLL_PLL3MUL RCC_CFGR2_PLL3MULx10 /* MCO 5MHz * 10 = 50MHz */
|
2012-09-22 17:12:50 +02:00
|
|
|
#endif
|
|
|
|
|
2012-08-10 19:07:02 +02:00
|
|
|
/************************************************************************************
|
|
|
|
* 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);
|