/* * Copyright (C) 2015 Kaspar Schleiser * 2015 FreshTemp, LLC. * 2014-2016 Freie Universität Berlin * * 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_saml21-xpro * @{ * * @file * @brief Peripheral MCU configuration for the Atmel SAM L21 Xplained Pro board * * @author Thomas Eichinger * @author Kaspar Schleiser * @author Hauke Petersen */ #ifndef PERIPH_CONF_H #define PERIPH_CONF_H #include "periph_cpu.h" #ifdef __cplusplus extern "C" { #endif /** * @brief GCLK reference speed */ #define CLOCK_CORECLOCK (48000000U) /** * @brief Enable the internal DC/DC converter * The board is equipped with the necessary inductor. */ #define USE_VREG_BUCK (1) /** * @name Timer peripheral configuration * @{ */ static const tc32_conf_t timer_config[] = { { /* Timer 0 - System Clock */ .dev = TC0, .irq = TC0_IRQn, .mclk = &MCLK->APBCMASK.reg, .mclk_mask = MCLK_APBCMASK_TC0_Msk | MCLK_APBCMASK_TC1_Msk, .gclk_id = TC0_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 #define TIMER_NUMOF ARRAY_SIZE(timer_config) /** @} */ /** * @name UART configuration * @{ */ static const uart_conf_t uart_config[] = { { /* Virtual COM Port */ .dev = &SERCOM3->USART, .rx_pin = GPIO_PIN(PA,23), .tx_pin = GPIO_PIN(PA,22), #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, }, { /* EXT1 header */ .dev = &SERCOM4->USART, .rx_pin = GPIO_PIN(PB, 9), .tx_pin = GPIO_PIN(PB, 8), #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, }, { /* EXT2 header */ .dev = &SERCOM1->USART, .rx_pin = GPIO_PIN(PA, 19), .tx_pin = GPIO_PIN(PA, 18), #ifdef MODULE_PERIPH_UART_HW_FC .rts_pin = GPIO_UNDEF, .cts_pin = GPIO_UNDEF, #endif .mux = GPIO_MUX_C, .rx_pad = UART_PAD_RX_3, .tx_pad = UART_PAD_TX_2, .flags = UART_FLAG_NONE, .gclk_src = SAM0_GCLK_MAIN, } }; /* interrupt function name mapping */ #define UART_0_ISR isr_sercom3 #define UART_1_ISR isr_sercom4 #define UART_2_ISR isr_sercom1 #define UART_NUMOF ARRAY_SIZE(uart_config) /** @} */ /** * @name PWM configuration * @{ */ /* PWM0 channels */ static const pwm_conf_chan_t pwm_chan0_config[] = { /* GPIO pin, MUX value, TCC channel */ { .pin = GPIO_PIN(PB, 10), .mux = GPIO_MUX_F, .chan = 4 }, }; /* PWM device configuration */ static const pwm_conf_t pwm_config[] = { { .tim = TCC_CONFIG(TCC0), .chan = pwm_chan0_config, .chan_numof = ARRAY_SIZE(pwm_chan0_config), .gclk_src = SAM0_GCLK_TIMER, }, }; /* number of devices that are actually defined */ #define PWM_NUMOF ARRAY_SIZE(pwm_config) /** @} */ /** * @name SPI configuration * @{ */ static const spi_conf_t spi_config[] = { { /* EXT1 header */ .dev = &(SERCOM0->SPI), .miso_pin = GPIO_PIN(PA, 4), .mosi_pin = GPIO_PIN(PA, 6), .clk_pin = GPIO_PIN(PA, 7), .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_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 }, { /* EXT2, EXT3 header */ .dev = &(SERCOM5->SPI), .miso_pin = GPIO_PIN(PB, 16), .mosi_pin = GPIO_PIN(PB, 22), .clk_pin = GPIO_PIN(PB, 23), .miso_mux = GPIO_MUX_C, .mosi_mux = GPIO_MUX_D, .clk_mux = GPIO_MUX_D, .miso_pad = SPI_PAD_MISO_0, .mosi_pad = SPI_PAD_MOSI_2_SCK_3, .gclk_src = SAM0_GCLK_MAIN, #ifdef MODULE_PERIPH_DMA /* no DMA on SERCOM5 */ .tx_trigger = DMA_TRIGGER_DISABLED, .rx_trigger = DMA_TRIGGER_DISABLED, #endif } }; #define SPI_NUMOF ARRAY_SIZE(spi_config) /** @} */ /** * @name I2C configuration * @{ */ static const i2c_conf_t i2c_config[] = { { .dev = &(SERCOM2->I2CM), .speed = I2C_SPEED_NORMAL, .scl_pin = GPIO_PIN(PA, 9), .sda_pin = GPIO_PIN(PA, 8), .mux = GPIO_MUX_D, .gclk_src = SAM0_GCLK_MAIN, .flags = I2C_FLAG_NONE } }; #define I2C_NUMOF ARRAY_SIZE(i2c_config) /** @} */ /** * @name RTC configuration * @{ */ #define EXTERNAL_OSC32_SOURCE 1 #define INTERNAL_OSC32_SOURCE 0 #define ULTRA_LOW_POWER_INTERNAL_OSC_SOURCE 0 /** @} */ /** * @name RTT configuration * @{ */ #ifndef RTT_FREQUENCY #define RTT_FREQUENCY (32768U) #endif /** @} */ /** * @name ADC Configuration * @{ */ /* ADC Default values */ #define ADC_PRESCALER ADC_CTRLB_PRESCALER_DIV256 #define ADC_NEG_INPUT ADC_INPUTCTRL_MUXNEG(0x18u) #define ADC_REF_DEFAULT ADC_REFCTRL_REFSEL_INTVCC2 static const adc_conf_chan_t adc_channels[] = { /* port, pin, muxpos */ { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA10 }, { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA11 }, { .inputctrl = ADC_INPUTCTRL_MUXPOS_PA02 } }; #define ADC_NUMOF ARRAY_SIZE(adc_channels) /** @} */ /** * @name DAC configuration * @{ */ /* Must not exceed 12 MHz */ #define DAC_CLOCK SAM0_GCLK_TIMER /* use Vcc as reference voltage */ #define DAC_VREF DAC_CTRLB_REFSEL_VDDANA /** @} */ /** * @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_G, .device = &USB->DEVICE, .gclk_src = SAM0_GCLK_48MHZ, } }; /** @} */ #ifdef __cplusplus } #endif #endif /* PERIPH_CONF_H */ /** @} */