/* * Copyright (C) 2024 ML!PA Consulting GmbH * * 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_adafruit-metro-m4-express * @{ * * @file * @brief Configuration of CPU peripherals for the Adafruit Metro M4 Express * * @author Marian Buschsieweke */ #ifndef PERIPH_CONF_H #define PERIPH_CONF_H #include "periph_cpu.h" #ifdef __cplusplus extern "C" { #endif /** * @name Core clock frequency * @{ */ #ifndef CLOCK_CORECLOCK #define CLOCK_CORECLOCK MHZ(120) #endif /** @} */ /** * @name 32kHz Oscillator configuration * @{ */ #define EXTERNAL_OSC32_SOURCE 1 #define INTERNAL_OSC32_SOURCE 0 #define ULTRA_LOW_POWER_INTERNAL_OSC_SOURCE 0 /** @} */ /** * @brief Enable the internal DC/DC converter * The board is equipped with L_EXT (L1) of 10uH at VSW pin. */ #define USE_VREG_BUCK (1) /** * @name ADC Configuration * @{ */ #define ADC_GCLK_SRC SAM0_GCLK_PERIPH /**< clock used for ADC */ #define ADC_PRESCALER ADC_CTRLA_PRESCALER_DIV8 #define ADC_NEG_INPUT ADC_INPUTCTRL_MUXNEG(0x18u) #define ADC_REF_DEFAULT ADC_REFCTRL_REFSEL_INTVCC1 static const adc_conf_chan_t adc_channels[] = { /* port, pin, muxpos, dev */ { .inputctrl = ADC0_INPUTCTRL_MUXPOS_PA02, .dev = ADC0 }, /* A0 */ { .inputctrl = ADC0_INPUTCTRL_MUXPOS_PA05, .dev = ADC0 }, /* A1 */ { .inputctrl = ADC0_INPUTCTRL_MUXPOS_PA06, .dev = ADC0 }, /* A2 */ { .inputctrl = ADC0_INPUTCTRL_MUXPOS_PA04, .dev = ADC0 }, /* A3 */ { .inputctrl = ADC1_INPUTCTRL_MUXPOS_PB08, .dev = ADC1 }, /* A4 */ { .inputctrl = ADC1_INPUTCTRL_MUXPOS_PB09, .dev = ADC1 }, /* A5 */ }; #define ADC_NUMOF ARRAY_SIZE(adc_channels) /** @} */ /** * @name DAC configuration * @{ */ /* Must not exceed 12 MHz */ #define DAC_CLOCK SAM0_GCLK_TIMER /* Use external reference voltage on PA03 */ /* (A solder jumper connects PA03 to 3V3 on the * back of the board. We assume the jumper has * not been cut.) */ #define DAC_VREF DAC_CTRLB_REFSEL_VREFPU /** @} */ /** * @name I2C configuration * @{ */ static const i2c_conf_t i2c_config[] = { { .dev = &(SERCOM5->I2CM), .speed = I2C_SPEED_NORMAL, .scl_pin = GPIO_PIN(PB, 3), /* D: SERCOM5.1 */ .sda_pin = GPIO_PIN(PB, 2), /* D: SERCOM5.0 */ .mux = GPIO_MUX_D, .gclk_src = SAM0_GCLK_PERIPH, .flags = I2C_FLAG_NONE }, }; #define I2C_NUMOF ARRAY_SIZE(i2c_config) /** @} */ /** * @name RTT configuration * @{ */ #ifndef RTT_FREQUENCY #define RTT_FREQUENCY (32768U) #endif /** @} */ /** * @name Timer peripheral configuration * @{ */ static const tc32_conf_t timer_config[] = { { /* Timer 0 - System Clock */ .dev = TC0, .irq = TC0_IRQn, .mclk = &MCLK->APBAMASK.reg, .mclk_mask = MCLK_APBAMASK_TC0 | MCLK_APBAMASK_TC1, .gclk_id = TC0_GCLK_ID, .gclk_src = SAM0_GCLK_TIMER, .flags = TC_CTRLA_MODE_COUNT32, }, { /* Timer 1 */ .dev = TC2, .irq = TC2_IRQn, .mclk = &MCLK->APBBMASK.reg, .mclk_mask = MCLK_APBBMASK_TC2 | MCLK_APBBMASK_TC3, .gclk_id = TC2_GCLK_ID, .gclk_src = SAM0_GCLK_TIMER, .flags = TC_CTRLA_MODE_COUNT32, } }; /* Timer 0 configuration */ #define TIMER_0_CHANNELS 2 #define TIMER_0_ISR isr_tc0 /* Timer 1 configuration */ #define TIMER_1_CHANNELS 2 #define TIMER_1_ISR isr_tc2 #define TIMER_NUMOF ARRAY_SIZE(timer_config) /** @} */ /** * @name SPI configuration * @{ */ static const spi_conf_t spi_config[] = { { /* SPI on ISP */ .dev = &(SERCOM2->SPI), .miso_pin = GPIO_PIN(PA, 14), /* C: SERCOM2.2, D: SERCOM4.2 */ .mosi_pin = GPIO_PIN(PA, 12), /* C: SERCOM2.0, D: SERCOM4.1 */ .clk_pin = GPIO_PIN(PA, 13), /* C: SERCOM2.1, D: SERCOM4.0 */ .miso_mux = GPIO_MUX_C, .mosi_mux = GPIO_MUX_C, .clk_mux = GPIO_MUX_C, .miso_pad = SPI_PAD_MISO_2, .mosi_pad = SPI_PAD_MOSI_0_SCK_1, .gclk_src = SAM0_GCLK_PERIPH, #if MODULE_PERIPH_DMA .tx_trigger = SERCOM2_DMAC_ID_TX, .rx_trigger = SERCOM2_DMAC_ID_RX, #endif }, #if !MODULE_PERIPH_UART { /* D11=MOSI, D12=MISO, D13=SCK */ .dev = &(SERCOM3->SPI), .miso_pin = GPIO_PIN(PA, 17), /* C: SERCOM1.1, D: SERCOM3.0 */ .mosi_pin = GPIO_PIN(PA, 19), /* C: SERCOM1.3, D: SERCOM3.3 */ .clk_pin = GPIO_PIN(PA, 16), /* C: SERCOM1.0, D: SERCOM3.1 */ .miso_mux = GPIO_MUX_D, .mosi_mux = GPIO_MUX_D, .clk_mux = GPIO_MUX_D, .miso_pad = SPI_PAD_MISO_0, .mosi_pad = SPI_PAD_MOSI_3_SCK_1, .gclk_src = SAM0_GCLK_PERIPH, # if MODULE_PERIPH_DMA .tx_trigger = SERCOM3_DMAC_ID_TX, .rx_trigger = SERCOM3_DMAC_ID_RX, # endif }, #endif #if MODULE_PERIPH_SPI_ON_QSPI { /* QSPI in SPI mode */ .dev = QSPI, .miso_pin = SAM0_QSPI_PIN_DATA_1, .mosi_pin = SAM0_QSPI_PIN_DATA_0, .clk_pin = SAM0_QSPI_PIN_CLK, .miso_mux = SAM0_QSPI_MUX, .mosi_mux = SAM0_QSPI_MUX, .clk_mux = SAM0_QSPI_MUX, .miso_pad = SPI_PAD_MISO_0, /* unused */ .mosi_pad = SPI_PAD_MOSI_0_SCK_1, /* unused */ .gclk_src = SAM0_GCLK_MAIN, /* unused */ # if MODULE_PERIPH_DMA .tx_trigger = QSPI_DMAC_ID_TX, .rx_trigger = QSPI_DMAC_ID_RX, # endif }, #endif }; #define SPI_NUMOF ARRAY_SIZE(spi_config) /** @} */ /** * @name USB peripheral configuration * @{ */ static const sam0_common_usb_config_t sam_usbdev_config[] = { { .dm = GPIO_PIN(PA, 24), .dp = GPIO_PIN(PA, 25), .d_mux = GPIO_MUX_H, .device = &USB->DEVICE, .gclk_src = SAM0_GCLK_PERIPH, } }; /** @} */ /** * @name UART configuration * @{ */ static const uart_conf_t uart_config[] = { /* The UART pins can be routed to SERCOM3 (used by SPI) or * SERCOM5 (used by I2C). The pad configuration for SERCOM5 * is impossible, as TXD cannot be routed to pad 1. * Hence, we let periph_spi and periph_uart conflict in * Makefile.features. */ /* D0 = RXD, D1 = TXD */ { .dev = &SERCOM3->USART, .rx_pin = GPIO_PIN(PA, 23), /* C: SERCOM3.1, D: SERCOM5.0 */ .tx_pin = GPIO_PIN(PA, 22), /* C: SERCOM3.0, D: SERCOM5.1 */ #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_PERIPH, }, }; /* interrupt function name mapping */ #define UART_0_ISR isr_sercom3_2 #define UART_0_ISR_TX isr_sercom3_0 #define UART_NUMOF ARRAY_SIZE(uart_config) /** @} */ #ifdef __cplusplus } #endif #endif /* PERIPH_CONF_H */ /** @} */