/****************************************************************************
 * boards/arm/stm32/mikroe-stm32f4/include/board.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

#ifndef __BOARDS_ARM_STM32_MIKROE_STM32F4_INCLUDE_BOARD_H
#define __BOARDS_ARM_STM32_MIKROE_STM32F4_INCLUDE_BOARD_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#ifndef __ASSEMBLY__
#  include <stdint.h>
#endif

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

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

/* The Mikroe STM32F4 Mikromedia board features a single 32kHz crystal.
 * The main clock uses the internal 16Mhz RC oscillator.
 *
 * This is the canonical configuration:
 * System Clock source           :PLL (HSE)
 * SYSCLK(Hz)                    :168000000   Determined by PLL configuration
 * HCLK(Hz)                      :168000000   (STM32_RCC_CFGR_HPRE)
 * AHB Prescaler                 :1           (STM32_RCC_CFGR_HPRE)
 * APB1 Prescaler                :4           (STM32_RCC_CFGR_PPRE1)
 * APB2 Prescaler                :2           (STM32_RCC_CFGR_PPRE2)
 * HSI Frequency(Hz)             :16000000    (STM32_HSI_FREQUENCY)
 * PLLM                          :16          (STM32_PLLCFG_PLLM)
 * PLLN                          :36         (STM32_PLLCFG_PLLN)
 * PLLP                          :2           (STM32_PLLCFG_PLLP)
 * PLLQ                          :7           (STM32_PLLCFG_PLLQ)
 * Main regulator output voltage :Scale1 mode Needed for high speed SYSCLK
 * Flash Latency(WS)             :5
 * Prefetch Buffer               :OFF
 * Instruction cache             :ON
 * Data cache                    :ON
 * Require 48MHz for USB OTG FS, :Enabled
 * SDIO and RNG clock
 */

/* HSI - 16 MHz RC factory-trimmed
 * LSI - 32 KHz RC
 * HSE - On-board crystal frequency is 8MHz
 * LSE - 32.768 kHz
 */

#define STM32_BOARD_XTAL        8000000ul

#define STM32_HSI_FREQUENCY     16000000ul
#define STM32_LSI_FREQUENCY     32000
#define STM32_HSE_FREQUENCY     STM32_BOARD_XTAL
#define STM32_LSE_FREQUENCY     32768

/* Main PLL Configuration.
 *
 * PLL source is HSI
 * PLL_VCO = (STM32_HSI_FREQUENCY / PLLM) * PLLN
 *         = (16,000,000 / 16) * 336
 *         = 336,000,000
 * SYSCLK  = PLL_VCO / PLLP
 *         = 336,000,000 / 2 = 168,000,000
 * USB OTG FS, SDIO and RNG Clock
 *         =  PLL_VCO / PLLQ
 *         = 48,000,000
 */

#define STM32_PLLCFG_PLLM       RCC_PLLCFG_PLLM(16)
#define STM32_PLLCFG_PLLN       RCC_PLLCFG_PLLN(336)
#define STM32_PLLCFG_PLLP       RCC_PLLCFG_PLLP_2
#define STM32_PLLCFG_PLLQ       RCC_PLLCFG_PLLQ(7)

#define STM32_SYSCLK_FREQUENCY  168000000ul

/* AHB clock (HCLK) is SYSCLK (168MHz) */

#define STM32_RCC_CFGR_HPRE     RCC_CFGR_HPRE_SYSCLK  /* HCLK  = SYSCLK / 1 */
#define STM32_HCLK_FREQUENCY    STM32_SYSCLK_FREQUENCY

/* APB1 clock (PCLK1) is HCLK/4 (42MHz) */

#define STM32_RCC_CFGR_PPRE1    RCC_CFGR_PPRE1_HCLKd4     /* PCLK1 = HCLK / 4 */
#define STM32_PCLK1_FREQUENCY   (STM32_HCLK_FREQUENCY/4)

/* Timers driven from APB1 will be twice 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   (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM6_CLKIN   (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM7_CLKIN   (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM12_CLKIN  (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM13_CLKIN  (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM14_CLKIN  (2*STM32_PCLK1_FREQUENCY)

/* APB2 clock (PCLK2) is HCLK/2 (84MHz) */

#define STM32_RCC_CFGR_PPRE2    RCC_CFGR_PPRE2_HCLKd2     /* PCLK2 = HCLK / 2 */
#define STM32_PCLK2_FREQUENCY   (STM32_HCLK_FREQUENCY/2)

/* Timers driven from APB2 will be twice PCLK2 */

#define STM32_APB2_TIM1_CLKIN   (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM8_CLKIN   (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM9_CLKIN   (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM10_CLKIN  (2*STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM11_CLKIN  (2*STM32_PCLK2_FREQUENCY)

/* 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 BOARD_TIM1_FREQUENCY    STM32_HCLK_FREQUENCY
#define BOARD_TIM2_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM3_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM4_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM5_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM6_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM7_FREQUENCY    (STM32_HCLK_FREQUENCY / 2)
#define BOARD_TIM8_FREQUENCY    STM32_HCLK_FREQUENCY

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

/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
 * any way.  The following definitions are used to access individual LEDs.
 */

/* LED index values for use with board_userled() */

#if 0
#define BOARD_LED1        0
#define BOARD_LED2        1
#define BOARD_LED3        2
#define BOARD_LED4        3
#endif
#define BOARD_NLEDS       0

#if 0
#define BOARD_LED_GREEN   BOARD_LED1
#define BOARD_LED_ORANGE  BOARD_LED2
#define BOARD_LED_RED     BOARD_LED3
#define BOARD_LED_BLUE    BOARD_LED4

/* LED bits for use with board_userled_all() */

#define BOARD_LED1_BIT    (1 << BOARD_LED1)
#define BOARD_LED2_BIT    (1 << BOARD_LED2)
#define BOARD_LED3_BIT    (1 << BOARD_LED3)
#define BOARD_LED4_BIT    (1 << BOARD_LED4)

/* If CONFIG_ARCH_LEDs is defined,
 * then NuttX will control the 4 LEDs on board the stm32f4discovery.
 * The following definitions describe how NuttX controls the LEDs:
 */

#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 */

/* Button definitions *******************************************************/

/* The STM32F4 Discovery supports one button: */

#define BUTTON_USER        0

#define NUM_BUTTONS        0

#define BUTTON_USER_BIT    (1 << BUTTON_USER)

#endif /* 0 */

/* Alternate function pin selections ****************************************/

/* UART2:
 *
 * The Mikroe-STM32F4 board has no on-board serial devices, but it brings out
 * UART2 to the expansion header.
 * (See the README.txt file for other options)
 */

#define GPIO_USART2_RX GPIO_USART2_RX_2
#define GPIO_USART2_TX GPIO_USART2_TX_2

/* PWM
 *
 * The STM32F4 Discovery has no real on-board PWM devices, but the board can
 * be configured to output a pulse train using TIM4 CH2 on PD13.
 */

#define GPIO_TIM4_CH2OUT GPIO_TIM4_CH2OUT_2

/* SPI - Onboard devices use SPI3, plus SPI2 routes to the I/O header */

#define GPIO_SPI2_MISO GPIO_SPI2_MISO_1
#define GPIO_SPI2_MOSI GPIO_SPI2_MOSI_1
#define GPIO_SPI2_SCK  GPIO_SPI2_SCK_2
#define DMACHAN_SPI2_RX DMAMAP_SPI2_RX
#define DMACHAN_SPI2_TX DMAMAP_SPI2_TX

#define GPIO_SPI3_MISO GPIO_SPI3_MISO_2
#define GPIO_SPI3_MOSI GPIO_SPI3_MOSI_2
#define GPIO_SPI3_SCK  GPIO_SPI3_SCK_2
#define DMACHAN_SPI3_RX DMAMAP_SPI3_RX_2
#define DMACHAN_SPI3_TX DMAMAP_SPI3_TX_2

/* Timer Inputs/Outputs (see the README.txt file for options) */

#define GPIO_TIM2_CH1IN  GPIO_TIM2_CH1IN_2
#define GPIO_TIM2_CH2IN  GPIO_TIM2_CH2IN_1

#define GPIO_TIM8_CH1IN  GPIO_TIM8_CH1IN_1
#define GPIO_TIM8_CH2IN  GPIO_TIM8_CH2IN_1

#endif /* __BOARDS_ARM_STM32_MIKROE_STM32F4_INCLUDE_BOARD_H */