/******************************************************************************
 * The MIT License
 *
 * Copyright (c) 2010 LeafLabs, LLC.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *****************************************************************************/

/**
 * @file stm32.h
 * @brief STM32 chip-specific definitions
 */

#ifndef _STM32_H_
#define _STM32_H_

/*
 * User-specific configuration.
 *
 * The #defines here depend upon how libmaple is used.  Because of the
 * potential for a mismatch between them and the actual libmaple
 * usage, you should try to keep their number to an absolute minimum.
 */

#ifdef __DOXYGEN_PREDEFINED_HACK

    /** @brief APB1 clock speed, in Hz. */
    #define STM32_PCLK1
    /** @brief APB2 clock speed, in Hz. */
    #define STM32_PCLK2

    /** Deprecated.  Use STM32_PCLK1 instead. */
    #define PCLK1
    /** Deprecated. Use STM32_PCLK2 instead. */
    #define PCLK2

#endif

#ifndef STM32_PCLK1
#define STM32_PCLK1   36000000U
#endif
#ifndef PCLK1
#define PCLK1 STM32_PCLK1
#endif
#if PCLK1 != STM32_PCLK1
#error "(Deprecated) PCLK1 differs from STM32_PCLK1"
#endif

#ifndef STM32_PCLK2
#define STM32_PCLK2   72000000U
#endif
#ifndef PCLK2
#define PCLK2 STM32_PCLK2
#endif
#if PCLK2 != STM32_PCLK2
#error "(Deprecated) PCLK2 differs from STM32_PCLK2"
#endif

/*
 * Density-specific configuration.
 */

#ifdef __DOXYGEN_PREDEFINED_HACK

    /**
     * @brief Number of interrupts in the NVIC.
     *
     * This define is automatically generated whenever the proper
     * density is defined (currently, this is restricted to defining
     * one of STM32_MEDIUM_DENSITY and STM32_HIGH_DENSITY).
     */
    #define STM32_NR_INTERRUPTS

    /** Deprecated.  Use STM32_NR_INTERRUPTS instead. */
    #define NR_INTERRUPTS

#endif

#ifdef STM32_MEDIUM_DENSITY
    #define STM32_NR_INTERRUPTS 43
#elif defined(STM32_HIGH_DENSITY)
    #define STM32_NR_INTERRUPTS 60
#else
#error "No STM32 board type defined!"
#endif

#define NR_INTERRUPTS STM32_NR_INTERRUPTS

/*
 * MCU-specific configuration.
 */

#ifdef __DOXYGEN_PREDEFINED_HACK

    /**
     * Number of GPIO ports.
     */
    #define STM32_NR_GPIO_PORTS

    /**
     * @brief Multiplier to convert microseconds into loop iterations
     *        in delay_us().
     *
     * @see delay_us()
     */
    #define STM32_DELAY_US_MULT

    /**
     * @brief Pointer to end of built-in SRAM.
     *
     * Points to the address which is 1 byte past the last valid
     * SRAM address.
     */
    #define STM32_SRAM_END

    /** Deprecated.  Use STM32_NR_GPIO_PORTS instead. */
    #define NR_GPIO_PORTS
    /** Deprecated.  Use STM32_DELAY_US_MULT instead. */
    #define DELAY_US_MULT

#endif

#if defined(MCU_STM32F103RB)
    /* e.g., LeafLabs Maple */

    #define STM32_NR_GPIO_PORTS          4
    #define STM32_DELAY_US_MULT         12
    #define STM32_SRAM_END              ((void*)0x20005000)

    #define NR_GPIO_PORTS               STM32_NR_GPIO_PORTS
    #define DELAY_US_MULT               STM32_DELAY_US_MULT

#elif defined(MCU_STM32F103ZE)
    /* e.g., LeafLabs Maple Native */

    #define STM32_NR_GPIO_PORTS          7
    #define STM32_DELAY_US_MULT         12
    #define STM32_SRAM_END              ((void*)0x20010000)

    #define NR_GPIO_PORTS               STM32_NR_GPIO_PORTS
    #define DELAY_US_MULT               STM32_DELAY_US_MULT

#elif defined(MCU_STM32F103CB)
    /* e.g., LeafLabs Maple Mini */

    /* This STM32_NR_GPIO_PORTS value is not, strictly speaking, true.
     * But only pins 0 and 1 exist, and they're used for OSC on the
     * Mini, so we'll live with this for now. */
    #define STM32_NR_GPIO_PORTS          3
    #define STM32_DELAY_US_MULT         12
    #define STM32_SRAM_END              ((void*)0x20005000)

    #define NR_GPIO_PORTS               STM32_NR_GPIO_PORTS
    #define DELAY_US_MULT               STM32_DELAY_US_MULT

#elif defined(MCU_STM32F103RE)
    /* e.g., LeafLabs Maple RET6 edition */

    #define STM32_NR_GPIO_PORTS          4
    #define STM32_DELAY_US_MULT         12
    #define STM32_SRAM_END              ((void*)0x20010000)

    #define NR_GPIO_PORTS               STM32_NR_GPIO_PORTS
    #define DELAY_US_MULT               STM32_DELAY_US_MULT

#else

#error "No MCU type specified. Add something like -DMCU_STM32F103RB "   \
       "to your compiler arguments (probably in a Makefile)."

#endif

#endif  /* _STM32_H_ */