/************************************************************************************
* configs/vsn-1.2/include/board.h
* include/arch/board/board.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2011 Uros Platise. All rights reserved
*
* Authors: Gregory Nutt <spudmonkey@racsa.co.cr>
* Uros Platise <uros.platise@isotel.eu>
*
* 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.
*
************************************************************************************/
#ifndef __ARCH_BOARD_BOARD_H
#define __ARCH_BOARD_BOARD_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
#include "stm32_rcc.h"
#include "stm32_sdio.h"
#include "stm32_internal.h"
/************************************************************************************
* Definitions
************************************************************************************/
/* Clocking *************************************************************************/
/* On-board external frequency source is 9MHz (HSE) provided by the CC1101, so it is
* not available on power-up. Instead we are about to run on HSI*9 = 36 MHz, see
* up_sysclock.c for details. */
#define STM32_BOARD_XTAL 9000000UL
#define STM32_BOARD_HCLK 36000000UL
/* PLL source is either HSI or HSE
* When HSI: PLL multiplier is 9, out frequency 36 MHz
* When HSE: PLL multiplier is 8: out frequency is 9 MHz x 8 = 72MHz
*/
#define STM32_CFGR_PLLSRC_HSI 0
#define STM32_CFGR_PLLMUL_HSI RCC_CFGR_PLLMUL_CLKx9
#define STM32_CFGR_PLLXTPRE_HSE 0
#define STM32_CFGR_PLLSRC_HSE RCC_CFGR_PLLSRC
#define STM32_CFGR_PLLMUL_HSE RCC_CFGR_PLLMUL_CLKx8
/* Use the PLL and set the SYSCLK source to be the PLL */
#define STM32_SYSCLK_SW RCC_CFGR_SW_PLL
#define STM32_SYSCLK_SWS RCC_CFGR_SWS_PLL
/* AHB clock (HCLK, 36 MHz) is SYSCLK on HSI or SYSCLK/2 on HSE */
#define STM32_RCC_CFGR_HPRE_HSI RCC_CFGR_HPRE_SYSCLK
#define STM32_RCC_CFGR_HPRE_HSE RCC_CFGR_HPRE_SYSCLKd2
#define STM32_HCLK_FREQUENCY STM32_BOARD_HCLK
/* APB2 clock (PCLK2) is HCLK (36MHz) */
#define STM32_RCC_CFGR_PPRE2 RCC_CFGR_PPRE2_HCLK
#define STM32_PCLK2_FREQUENCY STM32_BOARD_HCLK
/* APB1 clock (PCLK1) is HCLK (36MHz) */
#define STM32_RCC_CFGR_PPRE1 RCC_CFGR_PPRE1_HCLK
#define STM32_PCLK1_FREQUENCY STM32_BOARD_HCLK
/* USB divider -- Divide PLL clock by 1.5 */
#define STM32_CFGR_USBPRE 0
/* SDIO dividers. Note that slower clocking is required when DMA is disabled
* in order to avoid RX overrun/TX underrun errors due to delayed responses
* to service FIFOs in interrupt driven mode. These values have not been
* tuned!!!
*
* \todo Not checked yet! Uros.
* HCLK=36MHz, SDIOCLK=? MHz, SDIO_CK=HCLK/(178+2)=400 KHz
*/
#define SDIO_INIT_CLKDIV (178 << SDIO_CLKCR_CLKDIV_SHIFT)
/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(2+2)=18 MHz
* DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz
*/
#ifdef CONFIG_SDIO_DMA
# define SDIO_MMCXFR_CLKDIV (2 << SDIO_CLKCR_CLKDIV_SHIFT)
#else
# define SDIO_MMCXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT)
#endif
/* DMA ON: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(1+2)=24 MHz
* DMA OFF: HCLK=72 MHz, SDIOCLK=72MHz, SDIO_CK=HCLK/(3+2)=14.4 MHz
*/
#ifdef CONFIG_SDIO_DMA
# define SDIO_SDXFR_CLKDIV (1 << SDIO_CLKCR_CLKDIV_SHIFT)
#else
# define SDIO_SDXFR_CLKDIV (3 << SDIO_CLKCR_CLKDIV_SHIFT)
#endif
/* LED definitions ******************************************************************/
/* The VSN has one LED that we will encode as: */
#define LED_STARTED 0 /* ... */
#define LED_HEAPALLOCATE 1 /* ... */
#define LED_IRQSENABLED 2 /* ... */
#define LED_STACKCREATED 3 /* ... */
#define LED_INIRQ 4 /* ... */
#define LED_SIGNAL 5 /* ... */
#define LED_ASSERTION 6 /* ... */
#define LED_PANIC 7 /* ... */
#define LED_IDLE 8 /* shows idle state */
/* eXternal connector pins */
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
EXTERN void stm32_board_clockconfig(void);
/************************************************************************************
* 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.
*
************************************************************************************/
EXTERN void stm32_boardinitialize(void);
/************************************************************************************
* Button support.
*
* Description:
* up_buttoninit() must be called to initialize button resources. After that,
* up_buttons() may be called to collect the state of all buttons. up_buttons()
* returns an 8-bit bit set with each bit associated with a button. See the
* BUTTON_* and JOYSTICK_* definitions above for the meaning of each bit.
*
************************************************************************************/
#ifdef CONFIG_ARCH_BUTTONS
EXTERN void up_buttoninit(void);
EXTERN uint8_t up_buttons(void);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __ARCH_BOARD_BOARD_H */
