periph_conf.h

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/*
 * Copyright (C) 2017 Eistec AB
 *               2021-2023 Hugues Larrive
 *
 * 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.
 */
 
#pragma once
 
#include "periph_cpu.h"
 
#ifdef __cplusplus
extern "C"
{
#endif
 
static const clock_config_t clock_config = {
    /*
     * This configuration results in the system running from the FLL output with
     * the following clock frequencies:
     * Core:  60 MHz
     * Bus:   30 MHz
     * Flex:  20 MHz
     * Flash: 20 MHz
     */
    .clkdiv1 = SIM_CLKDIV1_OUTDIV1(0) | SIM_CLKDIV1_OUTDIV2(1) |
               SIM_CLKDIV1_OUTDIV3(2) | SIM_CLKDIV1_OUTDIV4(2),
    .rtc_clc = 0, /* External load caps on the FRDM-K22F board */
    .osc32ksel = SIM_SOPT1_OSC32KSEL(2),
    .clock_flags =
        KINETIS_CLOCK_OSC0_EN |
        KINETIS_CLOCK_RTCOSC_EN |
        KINETIS_CLOCK_USE_FAST_IRC |
        0,
    .default_mode = KINETIS_MCG_MODE_FEE,
    /* The crystal connected to OSC0 is 8 MHz */
    .erc_range = KINETIS_MCG_ERC_RANGE_HIGH,
    .osc_clc = 0, /* External load caps on the FRDM-K22F board */
    .oscsel = MCG_C7_OSCSEL(0), /* Use OSC0 for external clock */
    .fcrdiv = MCG_SC_FCRDIV(0), /* Fast IRC divide by 1 => 4 MHz */
    .fll_frdiv = MCG_C1_FRDIV(0b011), /* Divide by 256 */
    .fll_factor_fei = KINETIS_MCG_FLL_FACTOR_1464, /* FLL freq = 48 MHz */
    .fll_factor_fee = KINETIS_MCG_FLL_FACTOR_1920, /* FLL freq = 60 MHz */
    .pll_prdiv = MCG_C5_PRDIV0(0b00011), /* Divide by 4 */
    .pll_vdiv  = MCG_C6_VDIV0(0b00110), /* Multiply by 30 => PLL freq = 60 MHz */
};
#define CLOCK_CORECLOCK              (60000000ul)
#define CLOCK_BUSCLOCK               (CLOCK_CORECLOCK / 2)
#define PIT_NUMOF               (2U)
#define PIT_CONFIG {             \
    {                            \
        .prescaler_ch = 0,       \
        .count_ch = 1,           \
    },                           \
    {                            \
        .prescaler_ch = 2,       \
        .count_ch = 3,           \
    },                           \
}
#define LPTMR_NUMOF             (1U)
#define LPTMR_CONFIG {          \
    {                           \
        .dev = LPTMR0,          \
        .irqn = LPTMR0_IRQn,    \
        .src = 2,               \
        .base_freq = 32768u,    \
    },                          \
}
#define TIMER_NUMOF             ((PIT_NUMOF) + (LPTMR_NUMOF))
 
#define PIT_BASECLOCK           (CLOCK_BUSCLOCK)
#define PIT_ISR_0               isr_pit1
#define PIT_ISR_1               isr_pit3
#define LPTMR_ISR_0             isr_lptmr0
static const uart_conf_t uart_config[] = {
    {
        .dev    = UART1,
        .freq   = CLOCK_CORECLOCK,
        .pin_rx = GPIO_PIN(PORT_E,  1),
        .pin_tx = GPIO_PIN(PORT_E,  0),
        .pcr_rx = PORT_PCR_MUX(3),
        .pcr_tx = PORT_PCR_MUX(3),
        .irqn   = UART1_RX_TX_IRQn,
        .scgc_addr = &SIM->SCGC4,
        .scgc_bit = SIM_SCGC4_UART1_SHIFT,
        .mode   = UART_MODE_8N1,
        .type   = KINETIS_UART,
    },
    {
        .dev    = UART0,
        .freq   = CLOCK_CORECLOCK,
        .pin_rx = GPIO_PIN(PORT_D, 6),
        .pin_tx = GPIO_PIN(PORT_D, 7),
        .pcr_rx = PORT_PCR_MUX(3),
        .pcr_tx = PORT_PCR_MUX(3),
        .irqn   = UART0_RX_TX_IRQn,
        .scgc_addr = &SIM->SCGC4,
        .scgc_bit = SIM_SCGC4_UART0_SHIFT,
        .mode   = UART_MODE_8N1,
        .type   = KINETIS_UART,
    },
};
 
#define UART_0_ISR          (isr_uart1_rx_tx)
#define UART_1_ISR          (isr_uart0_rx_tx)
 
#define UART_NUMOF          ARRAY_SIZE(uart_config)
static const adc_conf_t adc_config[] = {
    /* dev, pin, channel */
    [0] = { /* ADC0_DP0 */
        .dev = ADC0,    .pin = GPIO_UNDEF,
        .chan = 0,      .avg = ADC_AVG_MAX
    },
    [1] = { /* ADC0_DM0 */
        .dev = ADC0,    .pin = GPIO_UNDEF,
        .chan = 19,     .avg = ADC_AVG_MAX
    },
    [2] = { /* ADC1_DP0 */
        .dev = ADC1,    .pin = GPIO_UNDEF,
        .chan = 0,      .avg = ADC_AVG_MAX
    },
    [3] = { /* ADC1_DM0 */
        .dev = ADC1,    .pin = GPIO_UNDEF,
        .chan = 19,     .avg = ADC_AVG_MAX
    },
    [4] = { /* PTB0 (Arduino A0) */
        .dev = ADC0,    .pin = GPIO_PIN(PORT_B, 0),
        .chan = 8,      .avg = ADC_AVG_MAX
    },
    [5] = { /* PTB1 (Arduino A1) */
        .dev = ADC0,    .pin = GPIO_PIN(PORT_B, 1),
        .chan = 9,     .avg = ADC_AVG_MAX
    },
    [6] = { /* PTC1 (Arduino A2) */
        .dev = ADC0,    .pin = GPIO_PIN(PORT_C, 1),
        .chan = 15,     .avg = ADC_AVG_MAX
    },
    [7] = { /* PTC2 (Arduino A3) */
        .dev = ADC0,    .pin = GPIO_PIN(PORT_C, 2),
        .chan = 4,      .avg = ADC_AVG_MAX
    },
    /* internal: temperature sensor */
    /* The temperature sensor has a very high output impedance, it must
     * not be sampled using hardware averaging, or the sampled values
     * will be garbage */
    [8] = {
        .dev = ADC0,    .pin = GPIO_UNDEF,
        .chan = 26,     .avg = ADC_AVG_NONE
    },
    /* internal: band gap */
    /* Note: the band gap buffer uses a bit of current and is turned off
     * by default, set PMC->REGSC |= PMC_REGSC_BGBE_MASK before reading
     * or the input will be floating */
    [9] = {
        .dev = ADC0,    .pin = GPIO_UNDEF,
        .chan = 27,     .avg = ADC_AVG_MAX
    },
};
 
#define ADC_NUMOF           ARRAY_SIZE(adc_config)
/*
 * K22F ADC reference settings:
 * 0: VREFH/VREFL external pin pair
 * 1: VREF_OUT internal 1.2 V reference (VREF module must be enabled)
 * 2-3: reserved
 */
#define ADC_REF_SETTING     0
static const pwm_conf_t pwm_config[] = {
    {
        .ftm        = FTM0,
        .chan       = {
            { .pin = GPIO_PIN(PORT_A, 1), .af = 3, .ftm_chan = 6 },
            { .pin = GPIO_PIN(PORT_A, 2), .af = 3, .ftm_chan = 7 },
            { .pin = GPIO_PIN(PORT_D, 5), .af = 4, .ftm_chan = 5 },
        },
        .chan_numof = 3,
        .ftm_num    = 0
    }
};
 
#define PWM_NUMOF           ARRAY_SIZE(pwm_config)
static const uint32_t spi_clk_config[] = {
    (
        SPI_CTAR_PBR(0) | SPI_CTAR_BR(8) |          /* -> 93750Hz */
        SPI_CTAR_PCSSCK(0) | SPI_CTAR_CSSCK(8) |
        SPI_CTAR_PASC(0) | SPI_CTAR_ASC(8) |
        SPI_CTAR_PDT(0) | SPI_CTAR_DT(8)
    ),
    (
        SPI_CTAR_PBR(0) | SPI_CTAR_BR(6) |          /* -> 375000Hz */
        SPI_CTAR_PCSSCK(0) | SPI_CTAR_CSSCK(6) |
        SPI_CTAR_PASC(0) | SPI_CTAR_ASC(6) |
        SPI_CTAR_PDT(0) | SPI_CTAR_DT(6)
    ),
    (
        SPI_CTAR_PBR(1) | SPI_CTAR_BR(4) |          /* -> 1000000Hz */
        SPI_CTAR_PCSSCK(1) | SPI_CTAR_CSSCK(3) |
        SPI_CTAR_PASC(1) | SPI_CTAR_ASC(3) |
        SPI_CTAR_PDT(1) | SPI_CTAR_DT(3)
    ),
    (
        SPI_CTAR_PBR(2) | SPI_CTAR_BR(0) |          /* -> 4800000Hz */
        SPI_CTAR_PCSSCK(2) | SPI_CTAR_CSSCK(0) |
        SPI_CTAR_PASC(2) | SPI_CTAR_ASC(0) |
        SPI_CTAR_PDT(2) | SPI_CTAR_DT(0)
    ),
    (
        SPI_CTAR_PBR(1) | SPI_CTAR_BR(0) |          /* -> 8000000Hz */
        SPI_CTAR_PCSSCK(1) | SPI_CTAR_CSSCK(0) |
        SPI_CTAR_PASC(1) | SPI_CTAR_ASC(0) |
        SPI_CTAR_PDT(1) | SPI_CTAR_DT(0)
    )
};
 
static const spi_conf_t spi_config[] = {
    {
        .dev      = SPI0,
        .pin_miso = GPIO_PIN(PORT_D, 3),
        .pin_mosi = GPIO_PIN(PORT_D, 2),
        .pin_clk  = GPIO_PIN(PORT_D, 1),
        .pin_cs   = {
            GPIO_PIN(PORT_C, 4),
            GPIO_PIN(PORT_D, 4),
            SPI_CS_UNDEF,
            SPI_CS_UNDEF,
            SPI_CS_UNDEF
        },
        .pcr      = GPIO_AF_2,
        .simmask  = SIM_SCGC6_SPI0_MASK
    }
};
 
#define SPI_NUMOF           ARRAY_SIZE(spi_config)
static const i2c_conf_t i2c_config[] = {
    {
        .i2c = I2C0,
        .scl_pin = GPIO_PIN(PORT_B, 2),
        .sda_pin = GPIO_PIN(PORT_B, 3),
        .freq = CLOCK_BUSCLOCK,
        .speed = I2C_SPEED_FAST,
        .irqn = I2C0_IRQn,
        .scl_pcr = (PORT_PCR_MUX(2) | PORT_PCR_ODE_MASK),
        .sda_pcr = (PORT_PCR_MUX(2) | PORT_PCR_ODE_MASK),
    },
};
#define I2C_NUMOF           ARRAY_SIZE(i2c_config)
#define I2C_0_ISR           (isr_i2c0)
#define I2C_1_ISR           (isr_i2c1)
#ifdef __cplusplus
}
#endif