RIOT/boards/maple-mini/include/periph_conf.h

/*
 * Copyright (C) 2016 Frits Kuipers
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */

/**
 * @ingroup     boards_maple-mini
 * @{
 *
 * @file
 * @brief       Peripheral MCU configuration for the maple-mini board
 *
 * @author      Frits Kuipers <frits.kuipers@gmail.com>
 */

#ifndef PERIPH_CONF_H_
#define PERIPH_CONF_H_

#include "periph_cpu.h"

#ifdef __cplusplus
extern "C" {
#endif

/**
 * @name Clock system configuration
 * @{
 */
#define CLOCK_HSE           (8000000U)              /* external oscillator */
#define CLOCK_CORECLOCK     (72000000U)             /* desired core clock frequency */

/* the actual PLL values are automatically generated */
#define CLOCK_PLL_DIV       (1)
#define CLOCK_PLL_MUL       CLOCK_CORECLOCK / CLOCK_HSE

/* AHB, APB1, APB2 dividers */
#define CLOCK_AHB_DIV       RCC_CFGR_HPRE_DIV1
#define CLOCK_APB2_DIV      RCC_CFGR_PPRE2_DIV1
#define CLOCK_APB1_DIV      RCC_CFGR_PPRE1_DIV2

/* Bus clocks */
#define CLOCK_APB1          (CLOCK_CORECLOCK / 2)
#define CLOCK_APB2          (CLOCK_CORECLOCK)

/* Flash latency */
#define CLOCK_FLASH_LATENCY FLASH_ACR_LATENCY_2    /* for >= 72 MHz */
/** @} */

/**
 * @name ADC configuration
 * @{
 */
#define ADC_NUMOF           (0)
/** @} */

/**
 * @name   DAC configuration
 * @{
 */
#define DAC_NUMOF           (0)
/** @} */

/**
 * @name   Timer configuration
 * @{
 */
static const timer_conf_t timer_config[] = {
    {
        .dev      = TIM2,
        .max      = 0x0000ffff,
        .rcc_mask = RCC_APB1ENR_TIM2EN,
        .bus      = APB1,
        .irqn     = TIM2_IRQn
    },
    {
        .dev      = TIM3,
        .max      = 0x0000ffff,
        .rcc_mask = RCC_APB1ENR_TIM3EN,
        .bus      = APB1,
        .irqn     = TIM3_IRQn
    }
};

#define TIMER_0_ISR         isr_tim2
#define TIMER_1_ISR         isr_tim3

#define TIMER_NUMOF         (sizeof(timer_config) / sizeof(timer_config[0]))
/** @} */

/**
 * @name   UART configuration
 * @{
 */
static const uart_conf_t uart_config[] = {
    {
        .dev      = USART2,
        .rcc_mask = RCC_APB1ENR_USART2EN,
        .rx_pin   = GPIO_PIN(PORT_A, 3),
        .tx_pin   = GPIO_PIN(PORT_A, 2),
        .bus      = APB1,
        .irqn     = USART2_IRQn
    },
    {
        .dev      = USART1,
        .rcc_mask = RCC_APB2ENR_USART1EN,
        .rx_pin   = GPIO_PIN(PORT_A, 10),
        .tx_pin   = GPIO_PIN(PORT_A, 9),
        .bus      = APB2,
        .irqn     = USART1_IRQn
    },
    {
        .dev      = USART3,
        .rcc_mask = RCC_APB1ENR_USART3EN,
        .rx_pin   = GPIO_PIN(PORT_B, 11),
        .tx_pin   = GPIO_PIN(PORT_B, 10),
        .bus      = APB1,
        .irqn     = USART3_IRQn
    }
};

#define UART_0_ISR          isr_usart2
#define UART_1_ISR          isr_usart1
#define UART_2_ISR          isr_usart3

#define UART_NUMOF          (sizeof(uart_config) / sizeof(uart_config[0]))
/** @} */

/**
 * @name I2C configuration
 * @{
 */
#define I2C_NUMOF           (2U)
#define I2C_0_EN            1
#define I2C_1_EN            0
#define I2C_IRQ_PRIO        1
#define I2C_APBCLK          (36000000U)

/* I2C 0 device configuration */
#define I2C_0_DEV           I2C1
#define I2C_0_CLKEN()       (RCC->APB1ENR |= RCC_APB1ENR_I2C1EN)
#define I2C_0_CLKDIS()      (RCC->APB1ENR &= ~(RCC_APB1ENR_I2C1EN))
#define I2C_0_EVT_IRQ       I2C1_EV_IRQn
#define I2C_0_EVT_ISR       isr_i2c1_ev
#define I2C_0_ERR_IRQ       I2C1_ER_IRQn
#define I2C_0_ERR_ISR       isr_i2c1_er
/* I2C 0 pin configuration */
#define I2C_0_SCL_PIN       GPIO_PIN(PORT_B, 6) /* D15 */
#define I2C_0_SDA_PIN       GPIO_PIN(PORT_B, 7) /* D16 */

/* I2C 1 device configuration */
#define I2C_1_DEV           I2C2
#define I2C_1_CLKEN()       (RCC->APB1ENR |= RCC_APB1ENR_I2C2EN)
#define I2C_1_CLKDIS()      (RCC->APB1ENR &= ~(RCC_APB1ENR_I2C2EN))
#define I2C_1_EVT_IRQ       I2C2_EV_IRQn
#define I2C_1_EVT_ISR       isr_i2c2_ev
#define I2C_1_ERR_IRQ       I2C2_ER_IRQn
#define I2C_1_ERR_ISR       isr_i2c2_er
/* I2C 1 pin configuration */
#define I2C_1_SCL_PIN       GPIO_PIN(PORT_B, 10) /* D1 */
#define I2C_1_SDA_PIN       GPIO_PIN(PORT_B, 11) /* D0 */
/** @} */

/**
 * @brief   Shared SPI clock div table
 *
 * @note    The spi_divtable is auto-generated from
 *          `cpu/stm32_common/dist/spi_divtable/spi_divtable.c`
 */
static const uint8_t spi_divtable[2][5] = {
    {       /* for APB1 @ 36000000Hz */
        7,  /* -> 140625Hz */
        6,  /* -> 281250Hz */
        4,  /* -> 1125000Hz */
        2,  /* -> 4500000Hz */
        1   /* -> 9000000Hz */
    },
    {       /* for APB2 @ 72000000Hz */
        7,  /* -> 281250Hz */
        7,  /* -> 281250Hz */
        5,  /* -> 1125000Hz */
        3,  /* -> 4500000Hz */
        2   /* -> 9000000Hz */
    }
};

/**
 * @name SPI configuration
 * @{
 */
static const spi_conf_t spi_config[] = {
    {
        .dev      = SPI1,
        .mosi_pin = GPIO_PIN(PORT_A,  7),
        .miso_pin = GPIO_PIN(PORT_A,  6),
        .sclk_pin = GPIO_PIN(PORT_A,  5),
        .cs_pin   = GPIO_UNDEF,
        .rccmask  = RCC_APB2ENR_SPI1EN,
        .apbbus   = APB2
    },
    {
        .dev      = SPI2,
        .mosi_pin = GPIO_PIN(PORT_B, 15),
        .miso_pin = GPIO_PIN(PORT_B, 14),
        .sclk_pin = GPIO_PIN(PORT_B, 13),
        .cs_pin   = GPIO_UNDEF,
        .rccmask  = RCC_APB1ENR_SPI2EN,
        .apbbus   = APB1
    }
};

#define SPI_NUMOF           (sizeof(spi_config) / sizeof(spi_config[0]))
/** @} */

#ifdef __cplusplus
}
#endif

#endif /* PERIPH_CONF_H_ */