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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2011-02-24 Bernard first implementation
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "serial.h"
/**
* @addtogroup FM4
*/
/*@{*/
/**
* This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/**
* This fucntion returns milliseconds since system passed
*/
rt_uint32_t rt_hw_tick_get_millisecond(void)
{
rt_tick_t tick;
rt_uint32_t value;
#define TICK_MS (1000/RT_TICK_PER_SECOND)
tick = rt_tick_get();
value = tick * TICK_MS + (SysTick->LOAD - SysTick->VAL) * TICK_MS / SysTick->LOAD;
return value;
}
/**
* This fucntion returns microseconds since system passed
*/
rt_uint32_t rt_hw_tick_get_microsecond(void)
{
rt_tick_t tick;
rt_uint32_t value;
#define TICK_US (1000000/RT_TICK_PER_SECOND)
tick = rt_tick_get();
value = tick * TICK_US + (SysTick->LOAD - SysTick->VAL) * TICK_US / SysTick->LOAD;
return value;
}
/**
* This function will initial FM3 Easy Kit board.
*/
void rt_hw_board_init(void)
{
/* disable all analog input. */
FM4_GPIO->ADE = 0x00u;
/* init systick */
SysTick_Config(SystemCoreClock/RT_TICK_PER_SECOND);
/* initialize UART device */
rt_hw_serial_init();
/* set console as UART device */
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
}
/*@}*/
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