/*
 * 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_gclk_base.h>
#include <hpl_pm_base.h>

/*! The buffer size for USART */
#define USART_0_BUFFER_SIZE 16

struct usart_async_descriptor USART_0;
struct spi_m_sync_descriptor  SPI_0;

static uint8_t USART_0_buffer[USART_0_BUFFER_SIZE];

void EXTERNAL_IRQ_0_init(void)
{
	_gclk_enable_channel(EIC_GCLK_ID, CONF_GCLK_EIC_SRC);

	// Set pin direction to input
	gpio_set_pin_direction(PA00, GPIO_DIRECTION_IN);

	gpio_set_pin_pull_mode(PA00,
	                       // <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(PA00, PINMUX_PA00A_EIC_EXTINT0);

	ext_irq_init();
}

/**
 * \brief USART Clock initialization function
 *
 * Enables register interface and peripheral clock
 */
void USART_0_CLOCK_init()
{

	_pm_enable_bus_clock(PM_BUS_APBC, SERCOM0);
	_gclk_enable_channel(SERCOM0_GCLK_ID_CORE, CONF_GCLK_SERCOM0_CORE_SRC);
}

/**
 * \brief USART pinmux initialization function
 *
 * Set each required pin to USART functionality
 */
void USART_0_PORT_init()
{

	gpio_set_pin_function(IN_UART_TX, PINMUX_PA08C_SERCOM0_PAD0);

	gpio_set_pin_function(OUT_UART_RX, PINMUX_PA09C_SERCOM0_PAD1);
}

/**
 * \brief USART initialization function
 *
 * Enables USART peripheral, clocks and initializes USART driver
 */
void USART_0_init(void)
{
	USART_0_CLOCK_init();
	usart_async_init(&USART_0, SERCOM0, USART_0_buffer, USART_0_BUFFER_SIZE, (void *)NULL);
	USART_0_PORT_init();
}

void SPI_0_PORT_init(void)
{

	// Set pin direction to input
	gpio_set_pin_direction(PA16, GPIO_DIRECTION_IN);

	gpio_set_pin_pull_mode(PA16,
	                       // <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(PA16, PINMUX_PA16C_SERCOM1_PAD0);

	gpio_set_pin_level(PA18,
	                   // <y> Initial level
	                   // <id> pad_initial_level
	                   // <false"> Low
	                   // <true"> High
	                   false);

	// Set pin direction to output
	gpio_set_pin_direction(PA18, GPIO_DIRECTION_OUT);

	gpio_set_pin_function(PA18, PINMUX_PA18C_SERCOM1_PAD2);

	gpio_set_pin_level(PA19,
	                   // <y> Initial level
	                   // <id> pad_initial_level
	                   // <false"> Low
	                   // <true"> High
	                   false);

	// Set pin direction to output
	gpio_set_pin_direction(PA19, GPIO_DIRECTION_OUT);

	gpio_set_pin_function(PA19, PINMUX_PA19C_SERCOM1_PAD3);
}

void SPI_0_CLOCK_init(void)
{
	_pm_enable_bus_clock(PM_BUS_APBC, SERCOM1);
	_gclk_enable_channel(SERCOM1_GCLK_ID_CORE, CONF_GCLK_SERCOM1_CORE_SRC);
}

void SPI_0_init(void)
{
	SPI_0_CLOCK_init();
	spi_m_sync_init(&SPI_0, SERCOM1);
	SPI_0_PORT_init();
}

void system_init(void)
{
	init_mcu();

	// GPIO on PA06

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

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

	gpio_set_pin_function(OUT_LED_TX, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA07

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

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

	gpio_set_pin_function(OUT_XBEE_REMOTE_RESET, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA14

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

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

	gpio_set_pin_function(OUT_XBEE_HEARTBEAT, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA15

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

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

	gpio_set_pin_function(OUT_LED_OTAU, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA17

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

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

	gpio_set_pin_function(OUT_SPI_CS, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA27

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

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

	gpio_set_pin_function(OUT_LED_LINK, GPIO_PIN_FUNCTION_OFF);

	// GPIO on PA28

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

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

	gpio_set_pin_function(OUT_LED_RX, GPIO_PIN_FUNCTION_OFF);

	EXTERNAL_IRQ_0_init();

	USART_0_init();

	SPI_0_init();
}