periph_conf.h

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/*
 * Copyright (C) 2019 Kees Bakker, SODAQ
 *
 * 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 <stdint.h>
 
#include "cpu.h"
#include "periph_cpu.h"
#include "cfg_clock_default.h"
#include "cfg_rtc_default.h"
#include "cfg_rtt_default.h"
#include "cfg_timer_default.h"
#include "cfg_usbdev_default.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
static const uart_conf_t uart_config[] = {
    {
        .dev      = &SERCOM5->USART,
        .rx_pin   = GPIO_PIN(PB, 3),  /* D0, RX Pin */
        .tx_pin   = GPIO_PIN(PB, 2),  /* D1, TX Pin */
#ifdef MODULE_PERIPH_UART_HW_FC
        .rts_pin  = GPIO_UNDEF,
        .cts_pin  = GPIO_UNDEF,
#endif
        .mux      = GPIO_MUX_D,
        .rx_pad   = UART_PAD_RX_1,
        .tx_pad   = UART_PAD_TX_0,
        .flags    = UART_FLAG_NONE,
        .gclk_src = SAM0_GCLK_MAIN,
    },
    {
        /* Connected to the UBlox */
        .dev      = &SERCOM2->USART,
        .rx_pin   = GPIO_PIN(PA, 13),
        .tx_pin   = GPIO_PIN(PA, 12),
#ifdef MODULE_PERIPH_UART_HW_FC
        .rts_pin  = GPIO_UNDEF,
        .cts_pin  = GPIO_UNDEF,
#endif
        .mux      = GPIO_MUX_C,
        .rx_pad   = UART_PAD_RX_1,
        .tx_pad   = UART_PAD_TX_0,
        .flags    = UART_FLAG_NONE,
        .gclk_src = SAM0_GCLK_MAIN,
    },
};
 
/* interrupt function name mapping */
#define UART_0_ISR          isr_sercom5
#define UART_1_ISR          isr_sercom2
 
#define UART_NUMOF          ARRAY_SIZE(uart_config)
/* ADC Default values */
#define ADC_PRESCALER                       ADC_CTRLB_PRESCALER_DIV512
 
#define ADC_NEG_INPUT                       ADC_INPUTCTRL_MUXNEG_GND
#define ADC_GAIN_FACTOR_DEFAULT             ADC_INPUTCTRL_GAIN_DIV2
#define ADC_REF_DEFAULT                     ADC_REFCTRL_REFSEL_INTVCC1
 
static const adc_conf_chan_t adc_channels[] = {
    /* port, pin, muxpos */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA02 },     /* A0 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA03 },     /* A1 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PB08 },     /* A2 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PB09 },     /* A3 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA06 },     /* A4 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA07 },     /* A5 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA08 },    /* A6 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA09 },    /* A7 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA10 },    /* A8 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA11 },    /* A9 */
#if 0
    /* These pins are also used for RX/TX uart0 */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PB02 },    /* A10, TX */
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PB03 },    /* A11, RX */
#endif
    { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA05 },     /* BAT_VOLT */
};
 
#define ADC_NUMOF                           ARRAY_SIZE(adc_channels)
static const spi_conf_t spi_config[] = {
    {
        .dev      = &SERCOM0->SPI,
        .miso_pin = GPIO_PIN(PA, 8),
        .mosi_pin = GPIO_PIN(PA, 10),
        .clk_pin  = GPIO_PIN(PA, 11),
        .miso_mux = GPIO_MUX_C,
        .mosi_mux = GPIO_MUX_C,
        .clk_mux  = GPIO_MUX_C,
        .miso_pad = SPI_PAD_MISO_0,
        .mosi_pad = SPI_PAD_MOSI_2_SCK_3,
        .gclk_src = SAM0_GCLK_MAIN,
#ifdef MODULE_PERIPH_DMA
        .tx_trigger = SERCOM0_DMAC_ID_TX,
        .rx_trigger = SERCOM0_DMAC_ID_RX,
#endif
    }
};
 
#define SPI_NUMOF           ARRAY_SIZE(spi_config)
static const i2c_conf_t i2c_config[] = {
    {
        .dev      = &(SERCOM3->I2CM),
        .speed    = I2C_SPEED_NORMAL,
        .scl_pin  = GPIO_PIN(PA, 23),
        .sda_pin  = GPIO_PIN(PA, 22),
        .mux      = GPIO_MUX_C,
        .gclk_src = SAM0_GCLK_MAIN,
        .flags    = I2C_FLAG_NONE
    }
};
#define I2C_NUMOF          ARRAY_SIZE(i2c_config)
#ifdef __cplusplus
}
#endif