nuttx/configs/stm3210e-eval/include/board.h

/************************************************************************************
 * configs/stm3210e-eval/include/board.h
 * include/arch/board/board.h
 *
 *   Copyright (C) 2009 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.
 *
 ************************************************************************************/

#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 crystal frequency is 8MHz (HSE) */

#define STM32_BOARD_XTAL        8000000ul

/* PLL source is HSE/1, PLL multipler is 9: PLL frequency is 8MHz (XTAL) x 9 = 72MHz */

#define STM32_CFGR_PLLSRC       RCC_CFGR_PLLSRC
#define STM32_CFGR_PLLXTPRE     0
#define STM32_CFGR_PLLMUL       RCC_CFGR_PLLMUL_CLKx9
#define STM32_PLL_FREQUENCY     (9*STM32_BOARD_XTAL)

/* 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
#define STM32_SYSCLK_FREQUENCY  STM32_PLL_FREQUENCY

/* AHB clock (HCLK) is SYSCLK (72MHz) */

#define STM32_RCC_CFGR_HPRE     RCC_CFGR_HPRE_SYSCLK
#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)

/* USB divider -- Divide PLL clock by 1.5 */

#define STM32_CFGR_USBPRE       0

/* Timer Frequencies, if APBx is set to 1, frequency is same to APBx
 * otherwise frequency is 2xAPBx. 
 * Note: TIM1,8 are on APB2, others on APB1 */

#define STM32_TIM18_FREQUENCY   STM32_HCLK_FREQUENCY
#define STM32_TIM27_FREQUENCY   STM32_HCLK_FREQUENCY

/* 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!!!
 *
 * HCLK=72MHz, SDIOCLK=72MHz, 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

/* SRAM definitions *****************************************************************/
/* The 8 Mbit SRAM is provided on the PT3 board using the FSMC_NE3 chip select. */

/* This is the Bank1 SRAM3 address: */

#define BOARD_SRAM_BASE    0x68000000     /* Bank2 SRAM3 base address */
#define BOARD_SRAM_SIZE    (1*1024*1024)  /* 8-Mbit = 1-Mbyte */

/* LED definitions ******************************************************************/

/* The STM3210E-EVAL board has 4 LEDs that we will encode as: */

#define LED_STARTED       0  /* LED1 */
#define LED_HEAPALLOCATE  1  /* LED2 */
#define LED_IRQSENABLED   2  /* LED1 + LED2 */
#define LED_STACKCREATED  3  /* LED3 */
#define LED_INIRQ         4  /* LED1 + LED3 */
#define LED_SIGNAL        5  /* LED2 + LED3 */
#define LED_ASSERTION     6  /* LED1 + LED2 + LED3 */
#define LED_PANIC         7  /* N/C  + N/C  + N/C + LED4 */

/* The STM3210E-EVAL supports several buttons
 *
 * Reset           -- Connected to NRST
 * Wakeup          -- Connected to PA.0
 * Tamper          -- Connected to PC.13
 * Key             -- Connected to PG.8
 *
 * And a Joystick
 *
 * Joystick center -- Connected to PG.7
 * Joystick down   -- Connected to PD.3
 * Joystick left   -- Connected to PG.14
 * Joystick right  -- Connected to PG.13
 * Joystick up     -- Connected to PG.15
 */

#define BUTTON_WAKEUP      0
#define BUTTON_TAMPER      1
#define BUTTON_KEY         2

#define JOYSTICK_SEL       3
#define JOYSTICK_DOWN      4
#define JOYSTICK_LEFT      5
#define JOYSTICK_RIGHT     6
#define JOYSTICK_UP        7

#define NUM_BUTTONS        8

#define BUTTON_WAKEUP_BIT  (1 << BUTTON_WAKEUP)
#define BUTTON_TAMPER_BIT  (1 << BUTTON_TAMPER)
#define BUTTON_KEY_BIT     (1 << BUTTON_KEY)

#define JOYSTICK_SEL_BIT   (1 << JOYSTICK_SEL)
#define JOYSTICK_DOWN_BIT  (1 << JOYSTICK_DOWN)
#define JOYSTICK_LEFT_BIT  (1 << JOYSTICK_LEFT)
#define JOYSTICK_RIGHT_BIT (1 << JOYSTICK_RIGHT)
#define JOYSTICK_UP_BIT    (1 << JOYSTICK_UP)

/************************************************************************************
 * 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);

/************************************************************************************
 * Button support.
 *
 * Description:
 *   up_buttoninit() must be called to initialize button resources.  After
 *   that, up_buttons() may be called to collect the current state of all
 *   buttons or up_irqbutton() may be called to register button interrupt
 *   handlers.
 *
 *   After up_buttoninit() has been called, 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_*_BIT and JOYSTICK_*_BIT
 *   definitions in board.h for the meaning of each bit.
 *
 *   up_irqbutton() may be called to register an interrupt handler that will
 *   be called when a button is depressed or released.  The ID value is a
 *   button enumeration value that uniquely identifies a button resource. See the
 *   BUTTON_* and JOYSTICK_* definitions in board.h for the meaning of enumeration
 *   value.  The previous interrupt handler address is returned (so that it may
 *   restored, if so desired).
 *
 ************************************************************************************/

#ifdef CONFIG_ARCH_BUTTONS
EXTERN void up_buttoninit(void);
EXTERN uint8_t up_buttons(void);
#ifdef CONFIG_ARCH_IRQBUTTONS
EXTERN xcpt_t up_irqbutton(int id, xcpt_t irqhandler);
#endif
#endif

/************************************************************************************
 * Name:  stm3210e_lcdclear
 *
 * Description:
 *   This is a non-standard LCD interface just for the STM3210E-EVAL board.  Because
 *   of the various rotations, clearing the display in the normal way by writing a
 *   sequences of runs that covers the entire display can be very slow.  Here the
 *   dispaly is cleared by simply setting all GRAM memory to the specified color.
 *
 ************************************************************************************/

#ifdef CONFIG_STM32_FSMC
EXTERN void stm3210e_lcdclear(uint16_t color);
#endif

/************************************************************************************
 * Name: stm32_lm75initialize
 *
 * Description:
 *   Initialize and register the LM-75 Temperature Sensor driver.
 *
 * Input parameters:
 *   devpath - The full path to the driver to register. E.g., "/dev/temp0"
 *
 * Returned Value:
 *   Zero (OK) on success; a negated errno value on failure.
 *
 ************************************************************************************/

#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1)
EXTERN int stm32_lm75initialize(FAR const char *devpath);
#endif

/************************************************************************************
 * Name: stm32_lm75attach
 *
 * Description:
 *   Attach the LM-75 interrupt handler
 *
 * Input parameters:
 *   irqhandler - the LM-75 interrupt handler
 *
 * Returned Value:
 *   The previous LM-75 interrupt handler
 *
 ************************************************************************************/

#if defined(CONFIG_I2C) && defined(CONFIG_I2C_LM75) && defined(CONFIG_STM32_I2C1)
EXTERN xcpt_t stm32_lm75attach(xcpt_t irqhandler);
#endif

#undef EXTERN
#if defined(__cplusplus)
}
#endif

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