periph_conf.h File Reference

Configuration of CPU peripherals for the Microchip SAM E54 Xplained Pro board. More...

Detailed Description

Configuration of CPU peripherals for the Microchip SAM E54 Xplained Pro board.

Author

Benjamin Valentin benja.nosp@m.min..nosp@m.valen.nosp@m.tin@.nosp@m.ml-pa.nosp@m..com

Definition in file periph_conf.h.

#include "periph_cpu.h"

Include dependency graph for periph_conf.h:

Go to the source code of this file.

Macros
#define	USE_VREG_BUCK   (1)
	Enable the internal DC/DC converter The board is equipped with the necessary inductor.
#define	USE_XOSC_ONLY   (0)
	Use the external oscillator to source all fast clocks. More...

external Oscillator (XOSC1) configuration
#define	XOSC1_FREQUENCY   MHZ(12)

desired core clock frequency
#define	CLOCK_CORECLOCK   MHZ(120)

32kHz Oscillator configuration
#define	EXTERNAL_OSC32_SOURCE   1
#define	ULTRA_LOW_POWER_INTERNAL_OSC_SOURCE   0

Timer peripheral configuration
#define	TIMER_0_CHANNELS   2
#define	TIMER_0_ISR   isr_tc0
#define	TIMER_1_CHANNELS   2
#define	TIMER_1_ISR   isr_tc2
#define	TIMER_NUMOF   ARRAY_SIZE(timer_config)
static const tc32_conf_t	timer_config []

UART configuration
#define	UART_0_ISR   isr_sercom2_2
#define	UART_0_ISR_TX   isr_sercom2_0
#define	UART_1_ISR   isr_sercom0_2
#define	UART_1_ISR_TX   isr_sercom0_0
#define	UART_2_ISR   isr_sercom5_2
#define	UART_2_ISR_TX   isr_sercom5_0
#define	UART_3_ISR   isr_sercom1_2
#define	UART_3_ISR_TX   isr_sercom1_0
#define	UART_NUMOF   ARRAY_SIZE(uart_config)
static const uart_conf_t	uart_config []

PWM configuration
#define	PWM_0_EN   1
#define	PWM_NUMOF   ARRAY_SIZE(pwm_config)
static const pwm_conf_chan_t	pwm_chan0_config []
static const pwm_conf_t	pwm_config []

SPI configuration
#define	SPI_NUMOF   ARRAY_SIZE(spi_config)
static const spi_conf_t	spi_config []

I2C configuration
#define	I2C_NUMOF   ARRAY_SIZE(i2c_config)
static const i2c_conf_t	i2c_config []

RTT configuration
#define	RTT_FREQUENCY   (32768U)

USB peripheral configuration
static const sam0_common_usb_config_t	sam_usbdev_config []

ADC Configuration
#define	ADC_PRESCALER   ADC_CTRLA_PRESCALER_DIV128
#define	ADC_NEG_INPUT   ADC_INPUTCTRL_MUXNEG(0x18u)
#define	ADC_REF_DEFAULT   ADC_REFCTRL_REFSEL_INTVCC1
#define	ADC_DEV   ADC0
#define	ADC_NUMOF   ARRAY_SIZE(adc_channels)
static const adc_conf_chan_t	adc_channels []

DAC configuration
#define	DAC_CLOCK   SAM0_GCLK_TIMER
#define	DAC_VREF   DAC_CTRLB_REFSEL_VREFPU

Macro Definition Documentation

USE_XOSC_ONLY

#define USE_XOSC_ONLY   (0)

Use the external oscillator to source all fast clocks.

This allows us to use the buck voltage regulator for maximum power efficiency, but limits the maximum clock frequency to 12 MHz.

Definition at line 36 of file periph_conf.h.

Variable Documentation

adc_channels

const adc_conf_chan_t adc_channels[]

static

Initial value:

= {
    
    {GPIO_PIN(PA, 3), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN1)},
    {GPIO_PIN(PA, 5), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN5)},
    {GPIO_PIN(PA, 7), ADC_INPUTCTRL_MUXPOS(ADC_INPUTCTRL_MUXPOS_AIN7)}
}

Definition at line 324 of file periph_conf.h.

i2c_config

const i2c_conf_t i2c_config[]

static

Initial value:

= {
    {    
        .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_PERIPH,
        .flags    = I2C_FLAG_NONE
    },
    {    
        .dev      = &(SERCOM7->I2CM),
        .speed    = I2C_SPEED_NORMAL,
        .scl_pin  = GPIO_PIN(PD, 9),
        .sda_pin  = GPIO_PIN(PD, 8),
        .mux      = GPIO_MUX_C,
        .gclk_src = SAM0_GCLK_PERIPH,
        .flags    = I2C_FLAG_NONE
    }
}

Definition at line 264 of file periph_conf.h.

pwm_chan0_config

const pwm_conf_chan_t pwm_chan0_config[]

static

Initial value:

= {
    
    { GPIO_PIN(PC, 18), GPIO_MUX_F, 2 },
}

Definition at line 196 of file periph_conf.h.

pwm_config

const pwm_conf_t pwm_config[]

static

Initial value:

= {
 
    { .tim  = TCC_CONFIG(TCC0),
      .chan = pwm_chan0_config,
      .chan_numof = ARRAY_SIZE(pwm_chan0_config),
      .gclk_src = SAM0_GCLK_48MHZ,
    },
 
}

Definition at line 203 of file periph_conf.h.

sam_usbdev_config

const sam0_common_usb_config_t sam_usbdev_config[]

static

Initial value:

= {
    {
        .dm     = GPIO_PIN(PA, 24),
        .dp     = GPIO_PIN(PA, 25),
        .d_mux  = GPIO_MUX_H,
        .device = &USB->DEVICE,
        .gclk_src = SAM0_GCLK_PERIPH,
    }
}

Definition at line 301 of file periph_conf.h.

timer_config

const tc32_conf_t timer_config[]

static

Initial value:

= {
    {   
        .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,
    },
    {   
        .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,
    }
}

Definition at line 77 of file periph_conf.h.