rt-thread/bsp/microchip/samc21/bsp/driver_init.c

/*
 * Code generated from Atmel Start.
 *
 * This file will be overwritten when reconfiguring your Atmel Start project.
 * Please copy examples or other code you want to keep to a separate file
 * to avoid losing it when reconfiguring.
 */

#include "driver_init.h"
#include <peripheral_clk_config.h>
#include <utils.h>
#include <hal_init.h>

#include <hpl_adc_base.h>

/*! The buffer size for USART */
#define TARGET_IO_BUFFER_SIZE 16

struct usart_async_descriptor TARGET_IO;
struct can_async_descriptor   CAN_0;

static uint8_t TARGET_IO_buffer[TARGET_IO_BUFFER_SIZE];

struct adc_sync_descriptor ADC_0;

struct flash_descriptor FLASH_0;

struct i2c_m_sync_desc I2C_0;

void ADC_0_PORT_init(void)
{

	// Disable digital pin circuitry
	gpio_set_pin_direction(PA10, GPIO_DIRECTION_OFF);

	gpio_set_pin_function(PA10, PINMUX_PA10B_ADC0_AIN10);
}

void ADC_0_CLOCK_init(void)
{
	hri_mclk_set_APBCMASK_ADC0_bit(MCLK);
	hri_gclk_write_PCHCTRL_reg(GCLK, ADC0_GCLK_ID, CONF_GCLK_ADC0_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
}

void ADC_0_init(void)
{
	ADC_0_CLOCK_init();
	ADC_0_PORT_init();
	adc_sync_init(&ADC_0, ADC0, _adc_get_adc_sync());
}

void FLASH_0_CLOCK_init(void)
{

	hri_mclk_set_AHBMASK_NVMCTRL_bit(MCLK);
}

void FLASH_0_init(void)
{
	FLASH_0_CLOCK_init();
	flash_init(&FLASH_0, NVMCTRL);
}

void I2C_0_PORT_init(void)
{

	gpio_set_pin_pull_mode(PA08,
	                       // <y> Pull configuration
	                       // <id> pad_pull_config
	                       // <GPIO_PULL_OFF"> Off
	                       // <GPIO_PULL_UP"> Pull-up
	                       // <GPIO_PULL_DOWN"> Pull-down
	                       GPIO_PULL_OFF);

	gpio_set_pin_function(PA08, PINMUX_PA08C_SERCOM0_PAD0);

	gpio_set_pin_pull_mode(PA09,
	                       // <y> Pull configuration
	                       // <id> pad_pull_config
	                       // <GPIO_PULL_OFF"> Off
	                       // <GPIO_PULL_UP"> Pull-up
	                       // <GPIO_PULL_DOWN"> Pull-down
	                       GPIO_PULL_OFF);

	gpio_set_pin_function(PA09, PINMUX_PA09C_SERCOM0_PAD1);
}

void I2C_0_CLOCK_init(void)
{
	hri_gclk_write_PCHCTRL_reg(GCLK, SERCOM0_GCLK_ID_CORE, CONF_GCLK_SERCOM0_CORE_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
	hri_gclk_write_PCHCTRL_reg(GCLK, SERCOM0_GCLK_ID_SLOW, CONF_GCLK_SERCOM0_SLOW_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
	hri_mclk_set_APBCMASK_SERCOM0_bit(MCLK);
}

void I2C_0_init(void)
{
	I2C_0_CLOCK_init();
	i2c_m_sync_init(&I2C_0, SERCOM0);
	I2C_0_PORT_init();
}

/**
 * \brief USART Clock initialization function
 *
 * Enables register interface and peripheral clock
 */
void TARGET_IO_CLOCK_init()
{

	hri_gclk_write_PCHCTRL_reg(GCLK, SERCOM4_GCLK_ID_CORE, CONF_GCLK_SERCOM4_CORE_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
	hri_gclk_write_PCHCTRL_reg(GCLK, SERCOM4_GCLK_ID_SLOW, CONF_GCLK_SERCOM4_SLOW_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
	hri_mclk_set_APBCMASK_SERCOM4_bit(MCLK);
}

/**
 * \brief USART pinmux initialization function
 *
 * Set each required pin to USART functionality
 */
void TARGET_IO_PORT_init()
{

	gpio_set_pin_function(PB10, PINMUX_PB10D_SERCOM4_PAD2);

	gpio_set_pin_function(PB11, PINMUX_PB11D_SERCOM4_PAD3);
}

/**
 * \brief USART initialization function
 *
 * Enables USART peripheral, clocks and initializes USART driver
 */
void TARGET_IO_init(void)
{
	TARGET_IO_CLOCK_init();
	usart_async_init(&TARGET_IO, SERCOM4, TARGET_IO_buffer, TARGET_IO_BUFFER_SIZE, (void *)NULL);
	TARGET_IO_PORT_init();
}

void CAN_0_PORT_init(void)
{

	gpio_set_pin_function(PA25, PINMUX_PA25G_CAN0_RX);

	gpio_set_pin_function(PA24, PINMUX_PA24G_CAN0_TX);
}
/**
 * \brief CAN initialization function
 *
 * Enables CAN peripheral, clocks and initializes CAN driver
 */
void CAN_0_init(void)
{
	hri_mclk_set_AHBMASK_CAN0_bit(MCLK);
	hri_gclk_write_PCHCTRL_reg(GCLK, CAN0_GCLK_ID, CONF_GCLK_CAN0_SRC | (1 << GCLK_PCHCTRL_CHEN_Pos));
	can_async_init(&CAN_0, CAN0);
	CAN_0_PORT_init();
}

void system_init(void)
{
	init_mcu();

	// GPIO on PA15

	gpio_set_pin_level(LED0,
	                   // <y> Initial level
	                   // <id> pad_initial_level
	                   // <false"> Low
	                   // <true"> High
	                   false);

	// Set pin direction to output
	gpio_set_pin_direction(LED0, GPIO_DIRECTION_OUT);

	gpio_set_pin_function(LED0, GPIO_PIN_FUNCTION_OFF);

	ADC_0_init();

	FLASH_0_init();

	I2C_0_init();
	TARGET_IO_init();
	CAN_0_init();
}