nuttx/configs/nucleo-f302r8/include/board.h

/****************************************************************************
 * configs/nucleo-f302r8/include/board.h
 * include/arch/board/board.h
 *
 *   Copyright (C) 2018 Gregory Nutt. All rights reserved.
 *   Author: Mateusz Szafoni <raiden00@railab.me>
 *
 * 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 __CONFIG_NUCLEOF302R8_INCLUDE_BOARD_H
#define __CONFIG_NUCLEOF302R8_INCLUDE_BOARD_H

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

#include <nuttx/config.h>

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

#ifdef __KERNEL__
#  include "stm32.h"
#endif

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

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

/* HSI - Internal 8 MHz RC Oscillator
 * LSI - 32 KHz RC
 * HSE - On-board crystal frequency is 8MHz
 * LSE - 32.768 kHz
 */

#define STM32_BOARD_XTAL        8000000ul        /* X1 on board */

#define STM32_HSI_FREQUENCY     8000000ul
#define STM32_LSI_FREQUENCY     40000            /* Between 30kHz and 60kHz */
#define STM32_HSE_FREQUENCY     STM32_BOARD_XTAL
#define STM32_LSE_FREQUENCY     32768            /* X2 on board */

/* 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 1 and 8, 15-17 */

/* APB2 timers 1 and 8, 15-17 will receive PCLK2. */

/* Timers driven from APB2 will be PCLK2 */

#define STM32_APB2_TIM1_CLKIN   (STM32_PCLK2_FREQUENCY)
#define STM32_APB2_TIM8_CLKIN   (STM32_PCLK2_FREQUENCY)
#define STM32_APB1_TIM15_CLKIN  (STM32_PCLK2_FREQUENCY)
#define STM32_APB1_TIM16_CLKIN  (STM32_PCLK2_FREQUENCY)
#define STM32_APB1_TIM17_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 2-7 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_TIM6_CLKIN   (2*STM32_PCLK1_FREQUENCY)
#define STM32_APB1_TIM7_CLKIN   (2*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 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 **********************************************************/
/* The Nucleo F302R8 board has three LEDs.  Two of these are controlled by
 * logic on the board and are not available for software control:
 *
 * LD1 COM:  LD1 default status is red.  LD1 turns to green to indicate that
 *           communications are in progress between the PC and the
 *           ST-LINK/V2-1.
 * LD3 PWR:  red LED indicates that the board is powered.
 *
 * And one can be controlled by software:
 *
 * User LD2: green LED is a user LED connected to the I/O PA5 of the
 *           STM32F302R8T6.
 *
 * If CONFIG_ARCH_LEDS is not defined, then the user can control the LED in
 * any way.  The following definition is used to access the LED.
 */

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

#define BOARD_LED1       0 /* User LD2 */
#define BOARD_NLEDS      1

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

#define BOARD_LED1_BIT   (1 << BOARD_LED1)

/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board
 * the Nucleo F302R8.  The following definitions describe how NuttX controls
 * the LED:
 *
 *   SYMBOL              Meaning                  LED1 state
 *   ------------------  -----------------------  ----------
 *   LED_STARTED         NuttX has been started   OFF
 *   LED_HEAPALLOCATE    Heap has been allocated  OFF
 *   LED_IRQSENABLED     Interrupts enabled       OFF
 *   LED_STACKCREATED    Idle stack created       ON
 *   LED_INIRQ           In an interrupt          No change
 *   LED_SIGNAL          In a signal handler      No change
 *   LED_ASSERTION       An assertion failed      No change
 *   LED_PANIC           The system has crashed   Blinking
 *   LED_IDLE            STM32 is is sleep mode   Not used
 */

#define LED_STARTED      0
#define LED_HEAPALLOCATE 0
#define LED_IRQSENABLED  0
#define LED_STACKCREATED 1
#define LED_INIRQ        2
#define LED_SIGNAL       2
#define LED_ASSERTION    2
#define LED_PANIC        1

/* Button definitions *******************************************************/
/* The Nucleo F302R8 supports two buttons; only one button is controllable
 * by software:
 *
 *   B1 USER:  user button connected to the I/O PC13 of the STM32F302R8T6.
 *   B2 RESET: push button connected to NRST is used to RESET the
 *             STM32F302R8T6.
 */

#define BUTTON_USER      0
#define NUM_BUTTONS      1

#define BUTTON_USER_BIT  (1 << BUTTON_USER)

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

/* USART */

/* By default the USART2 is connected to STLINK Virtual COM Port:
 * USART2_RX - PA3
 * USART2_TX - PA4
 */

#define GPIO_USART2_RX GPIO_USART2_RX_2 /* PA3 */
#define GPIO_USART2_TX GPIO_USART2_TX_2 /* PA2 */

/* DMA channels *************************************************************/


/* PWM configuration ********************************************************/

/* TIM1 PWM */

#define STM32_TIM1_TRGO 0

#define GPIO_TIM1_CH1OUT  GPIO_TIM1_CH1OUT_2  /* PA8 */
#define GPIO_TIM1_CH1NOUT GPIO_TIM1_CH1N_3    /* PA11 */
#define GPIO_TIM1_CH2OUT  GPIO_TIM1_CH2OUT_2  /* PA9 */
#define GPIO_TIM1_CH2NOUT GPIO_TIM1_CH2N_2    /* PA12 */
#define GPIO_TIM1_CH3OUT  GPIO_TIM1_CH3OUT_2  /* PA10 */
#define GPIO_TIM1_CH3NOUT GPIO_TIM1_CH3N_3    /* PB1 */

/* TIM2 PWM */

#define GPIO_TIM2_CH1OUT  GPIO_TIM2_CH1_ETR_1 /* PA0 */
#define GPIO_TIM2_CH2OUT  GPIO_TIM2_CH2OUT_1  /* PA1 */
#define GPIO_TIM2_CH3OUT  GPIO_TIM2_CH3OUT_1  /* PA9 */

#endif /* __CONFIG_NUCLEO_F302R8_INCLUDE_BOARD_H */