periph_conf.h

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/*
 * SPDX-FileCopyrightText: 2015-2020 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include "cpu.h"
#include "periph_cpu.h"
#include "em_cmu.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#ifndef CLOCK_HF
#define CLOCK_HF            cmuSelect_HFXO
#endif
#ifndef CLOCK_CORE_DIV
#define CLOCK_CORE_DIV      cmuClkDiv_1
#endif
#ifndef CLOCK_LFA
#define CLOCK_LFA           cmuSelect_LFXO
#endif
#ifndef CLOCK_LFB
#define CLOCK_LFB           cmuSelect_CORELEDIV2
#endif

static const adc_conf_t adc_config[] = {
    {
        .dev = ADC0,
        .cmu = cmuClock_ADC0,
    }
};
 
static const adc_chan_conf_t adc_channel_config[] = {
    {
        .dev = 0,
        .input = adcSingleInputTemp,
        .reference = adcRef1V25,
        .acq_time = adcAcqTime8
    },
    {
        .dev = 0,
        .input = adcSingleInputVDDDiv3,
        .reference = adcRef1V25,
        .acq_time = adcAcqTime8
    }
};
 
#define ADC_DEV_NUMOF       ARRAY_SIZE(adc_config)
#define ADC_NUMOF           ARRAY_SIZE(adc_channel_config)

static const i2c_conf_t i2c_config[] = {
    {
        .dev = I2C0,
        .sda_pin = GPIO_PIN(PE, 12),
        .scl_pin = GPIO_PIN(PE, 13),
        .loc = I2C_ROUTE_LOCATION_LOC6,
        .speed = I2C_SPEED_NORMAL,
        .cmu = cmuClock_I2C0,
        .irq = I2C0_IRQn,
        .use_internal_pull_ups = true
    }
};
 
#define I2C_NUMOF           ARRAY_SIZE(i2c_config)
#define I2C_0_ISR           isr_i2c0

#ifndef RTT_FREQUENCY
#define RTT_FREQUENCY       (1U)              /* in Hz */
#endif

static const spi_dev_t spi_config[] = {
    {
        .dev = USART1,
        .mosi_pin = GPIO_PIN(PD, 7),
        .miso_pin = GPIO_PIN(PD, 6),
        .clk_pin = GPIO_PIN(PC, 15),
/* page 81 https://www.silabs.com/documents/public/data-sheets/efm32zg-datasheet.pdf */
        .loc = USART_ROUTE_LOCATION_LOC3,
        .cmu = cmuClock_USART1,
        .irq = USART1_RX_IRQn
    }
};
 
#define SPI_NUMOF           ARRAY_SIZE(spi_config)

static const timer_conf_t timer_config[] = {
    {
        .prescaler = {
            .dev = TIMER0,
            .cmu = cmuClock_TIMER0
        },
        .timer = {
            .dev = TIMER1,
            .cmu = cmuClock_TIMER1
        },
        .irq = TIMER1_IRQn,
        .channel_numof = 3
    }
};
 
#define TIMER_NUMOF         ARRAY_SIZE(timer_config)
#define TIMER_0_ISR         isr_timer1

static const uart_conf_t uart_config[] = {
    {
        .dev = LEUART0,
        .rx_pin = GPIO_PIN(PD, 5),
        .tx_pin = GPIO_PIN(PD, 4),
        .loc = LEUART_ROUTE_LOCATION_LOC0,
        .cmu = cmuClock_LEUART0,
        .irq = LEUART0_IRQn
    }
};
 
#define UART_NUMOF          ARRAY_SIZE(uart_config)
#define UART_0_ISR_RX       isr_leuart0
 
#ifdef __cplusplus
}
#endif