125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/*
|
|
* File : board.c
|
|
* This file is part of RT-Thread RTOS
|
|
* COPYRIGHT (C) 2014 RT-Thread Develop Team
|
|
*
|
|
* The license and distribution terms for this file may be
|
|
* found in the file LICENSE in this distribution or at
|
|
* http://www.rt-thread.org/license/LICENSE
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
* 2016-12-05 Pluto first implementation
|
|
*/
|
|
|
|
#include <rthw.h>
|
|
#include <rtthread.h>
|
|
#include "board.h"
|
|
#include "usart.h"
|
|
|
|
/**
|
|
* @addtogroup NUVOTON_M451
|
|
*/
|
|
|
|
/*@{*/
|
|
|
|
/*******************************************************************************
|
|
* Function Name : NVIC_Configuration
|
|
* Description : Configures Vector Table base location.
|
|
* Input : None
|
|
* Output : None
|
|
* Return : None
|
|
*******************************************************************************/
|
|
void NVIC_Configuration(void)
|
|
{
|
|
// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
|
|
}
|
|
|
|
/**
|
|
* @brief Inserts a delay time.
|
|
* @param nCount: specifies the delay time length.
|
|
* @retval None
|
|
*/
|
|
static void delay(__IO uint32_t nCount)
|
|
{
|
|
/* Decrement nCount value */
|
|
while (nCount != 0)
|
|
{
|
|
nCount--;
|
|
}
|
|
}
|
|
|
|
static void rt_hw_system_init(void)
|
|
{
|
|
/*---------------------------------------------------------------------------------------------------------*/
|
|
/* Init System Clock */
|
|
/*---------------------------------------------------------------------------------------------------------*/
|
|
/* Unlock protected registers */
|
|
SYS_UnlockReg();
|
|
|
|
/* Enable HIRC clock (Internal RC 22.1184MHz) */
|
|
CLK_EnableXtalRC(CLK_PWRCTL_HIRCEN_Msk);
|
|
|
|
/* Wait for HIRC clock ready */
|
|
CLK_WaitClockReady(CLK_STATUS_HIRCSTB_Msk);
|
|
|
|
/* Select HCLK clock source as HIRC and and HCLK clock divider as 1 */
|
|
CLK_SetHCLK(CLK_CLKSEL0_HCLKSEL_HIRC, CLK_CLKDIV0_HCLK(1));
|
|
|
|
/* Enable HXT clock (external XTAL 12MHz) */
|
|
CLK_EnableXtalRC(CLK_PWRCTL_HXTEN_Msk);
|
|
|
|
/* Wait for HXT clock ready */
|
|
CLK_WaitClockReady(CLK_STATUS_HXTSTB_Msk);
|
|
|
|
/* Set core clock as PLL_CLOCK from PLL */
|
|
CLK_SetCoreClock(BOARD_PLL_CLOCK);
|
|
|
|
/* Set SysTick clock source to HCLK source divide 2 */
|
|
CLK_SetSysTickClockSrc(CLK_CLKSEL0_STCLKSEL_HCLK_DIV2);
|
|
|
|
/* Lock protected registers */
|
|
SYS_LockReg();
|
|
}
|
|
|
|
/**
|
|
* 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 function will initial Nuvoton board.
|
|
*/
|
|
void rt_hw_board_init()
|
|
{
|
|
/* NVIC Configuration */
|
|
NVIC_Configuration();
|
|
|
|
/* Configure the system clock */
|
|
rt_hw_system_init();
|
|
/* Configure the SysTick */
|
|
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
|
|
|
|
/* Initial usart deriver, and set console device */
|
|
rt_hw_usart_init();
|
|
#ifdef RT_USING_CONSOLE
|
|
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
|
|
#endif
|
|
|
|
/* Call components board initial (use INIT_BOARD_EXPORT()) */
|
|
#ifdef RT_USING_COMPONENTS_INIT
|
|
rt_components_board_init();
|
|
#endif
|
|
}
|
|
|
|
/*@}*/
|