board.h

/****************************************************************************
 * boards/arm/stm32/nucleo-f303re/include/board.h
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * 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_NUCLEO_F303RE_INCLUDE_BOARD_H
#define __BOARDS_ARM_STM32_NUCLEO_F303RE_INCLUDE_BOARD_H

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

#include <nuttx/config.h>

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

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

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

/* HSI - Internal 8 MHz RC Oscillator
 * LSI - 32 KHz RC
 * HSE - 8 MHz from MCO output of ST-LINK
 * LSE - 32.768 kHz
 */

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

#define STM32_HSEBYP_ENABLE
#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 multiplier 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_SYSCLK_FREQUENCY

/* 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 F303RE 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
 *           STM32F303RET6.
 *
 * 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 F303RE.  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 in 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 F303RE supports two buttons; only one button is controllable
 * by software:
 *
 *   B1 USER:  user button connected to the I/O PC13 of the STM32F303RET6.
 *   B2 RESET: push button connected to NRST is used to RESET the
 *             STM32F303RET6.
 */

#define BUTTON_USER      0
#define NUM_BUTTONS      1

#define BUTTON_USER_BIT  (1 << BUTTON_USER)

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

/* CAN */

#define GPIO_CAN1_RX (GPIO_CAN_RX_2|GPIO_SPEED_25MHz)
#define GPIO_CAN1_TX (GPIO_CAN_TX_2|GPIO_SPEED_25MHz)

/* I2C */

#define GPIO_I2C1_SCL (GPIO_I2C1_SCL_3|GPIO_SPEED_50MHz)
#define GPIO_I2C1_SDA (GPIO_I2C1_SDA_3|GPIO_SPEED_50MHz)

/* SPI */

#define GPIO_SPI1_MISO GPIO_SPI1_MISO_1
#define GPIO_SPI1_MOSI GPIO_SPI1_MOSI_1
#define GPIO_SPI1_SCK  GPIO_SPI1_SCK_1

/* TIM */

#define GPIO_TIM2_CH2OUT (GPIO_TIM2_CH2OUT_2|GPIO_SPEED_50MHz)
#define GPIO_TIM2_CH3OUT (GPIO_TIM2_CH3OUT_3|GPIO_SPEED_50MHz)

#define GPIO_TIM3_CH1OUT (GPIO_TIM3_CH1OUT_2|GPIO_SPEED_50MHz)
#define GPIO_TIM3_CH2OUT (GPIO_TIM3_CH2OUT_4|GPIO_SPEED_50MHz)

#define GPIO_TIM4_CH1OUT (GPIO_TIM4_CH1OUT_2|GPIO_SPEED_50MHz)

/* USART */

#define GPIO_USART2_RX (GPIO_USART2_RX_2|GPIO_SPEED_50MHz)
#define GPIO_USART2_TX (GPIO_USART2_TX_2|GPIO_SPEED_50MHz)

/* UART4 */

#define GPIO_UART4_RX  (GPIO_UART4_RX_0|GPIO_SPEED_50MHz)
#define GPIO_UART4_TX  (GPIO_UART4_TX_0|GPIO_SPEED_50MHz)

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

/* ADC */

#define ADC1_DMA_CHAN DMACHAN_ADC1
#define ADC2_DMA_CHAN DMACHAN_ADC2_1
#define ADC3_DMA_CHAN DMACHAN_ADC3
#define ADC4_DMA_CHAN DMACHAN_ADC4_1

#endif /* __BOARDS_ARM_STM32_NUCLEO_F303RE_INCLUDE_BOARD_H */