px4-firmware/nuttx-configs/px4io-v2/include/board.h

/************************************************************************************
 * configs/px4io/include/board.h
 * include/arch/board/board.h
 *
 *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <gnutt@nuttx.org>
 *   Copyright (C) 2012 PX4 Development Team. All rights reserved.
 *
 * 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.h>

/************************************************************************************
 * Definitions
 ************************************************************************************/

/* Clocking *************************************************************************/

/* On-board crystal frequency is 24MHz (HSE) */

#define STM32_BOARD_XTAL        24000000ul

/* Use the HSE output as the system clock */

#define STM32_SYSCLK_SW         RCC_CFGR_SW_HSE
#define STM32_SYSCLK_SWS        RCC_CFGR_SWS_HSE
#define STM32_SYSCLK_FREQUENCY  STM32_BOARD_XTAL

/* AHB clock (HCLK) is SYSCLK (24MHz) */

#define STM32_RCC_CFGR_HPRE     RCC_CFGR_HPRE_SYSCLK
#define STM32_HCLK_FREQUENCY    STM32_SYSCLK_FREQUENCY
#define STM32_BOARD_HCLK        STM32_HCLK_FREQUENCY    /* same as above, to satisfy compiler */

/* APB2 clock (PCLK2) is HCLK (24MHz) */

#define STM32_RCC_CFGR_PPRE2    RCC_CFGR_PPRE2_HCLK
#define STM32_PCLK2_FREQUENCY   STM32_HCLK_FREQUENCY
#define STM32_APB2_CLKIN        (STM32_PCLK2_FREQUENCY)   /* Timers 2-4 */

/* APB2 timer 1 will receive PCLK2. */

#define STM32_APB2_TIM1_CLKIN   (STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM8_CLKIN   (STM32_PCLK2_FREQUENCY)

/* APB1 clock (PCLK1) is HCLK (24MHz) */

#define STM32_RCC_CFGR_PPRE1    RCC_CFGR_PPRE1_HCLK
#define STM32_PCLK1_FREQUENCY   (STM32_HCLK_FREQUENCY)

/* All timers run off PCLK */

#define STM32_APB1_TIM1_CLKIN   (STM32_PCLK2_FREQUENCY)
#define STM32_APB1_TIM2_CLKIN   (STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM3_CLKIN   (STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM4_CLKIN   (STM32_PCLK1_FREQUENCY)

/*
 * Some of the USART pins are not available; override the GPIO
 * definitions with an invalid pin configuration.
 */
#undef GPIO_USART2_CTS
#define GPIO_USART2_CTS	0xffffffff
#undef GPIO_USART2_RTS
#define GPIO_USART2_RTS	0xffffffff
#undef GPIO_USART2_CK
#define GPIO_USART2_CK 	0xffffffff
#undef GPIO_USART3_TX
#define GPIO_USART3_TX 	0xffffffff
#undef GPIO_USART3_CK
#define GPIO_USART3_CK 	0xffffffff
#undef GPIO_USART3_CTS
#define GPIO_USART3_CTS	0xffffffff
#undef GPIO_USART3_RTS
#define GPIO_USART3_RTS	0xffffffff

/************************************************************************************
 * Public Data
 ************************************************************************************/

#ifndef __ASSEMBLY__

#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#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.
 *
 ************************************************************************************/

EXTERN void stm32_boardinitialize(void);
    
#if defined(__cplusplus)
}
#endif

#endif /* __ASSEMBLY__ */
#endif  /* __ARCH_BOARD_BOARD_H */