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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-9-1 Philo First version
*
******************************************************************************/
#include <rtconfig.h>
#include <rtthread.h>
#include "NuMicro.h"
#include <nu_bitutil.h>
#include "drv_uart.h"
#include "board.h"
#include "nutool_pincfg.h"
#include "nutool_modclkcfg.h"
/**
* This function will initial M032 board.
*/
rt_weak void rt_hw_board_init(void)
{
/* Init System/modules clock */
nutool_modclkcfg_init();
/* Unlock protected registers */
SYS_UnlockReg();
/* Init all pin function setting */
nutool_pincfg_init();
/* Configure SysTick */
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
/* Update System Core Clock */
/* User can use SystemCoreClockUpdate() to calculate SystemCoreClock. */
SystemCoreClockUpdate();
#if defined(BSP_USING_EADC)
/* Vref connect to internal */
SYS->VREFCTL = (SYS->VREFCTL & ~SYS_VREFCTL_VREFCTL_Msk) | SYS_VREFCTL_VREF_3_0V;
#endif
/* Lock protected registers */
SYS_LockReg();
#ifdef RT_USING_HEAP
rt_system_heap_init(HEAP_BEGIN, HEAP_END);
#endif /* RT_USING_HEAP */
#if defined(BSP_USING_UART)
rt_hw_uart_init();
#endif
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
}
/**
* The time delay function.
*
* @param microseconds.
*/
void rt_hw_us_delay(rt_uint32_t us)
{
rt_uint32_t ticks;
rt_uint32_t told, tnow, tcnt = 0;
rt_uint32_t reload = SysTick->LOAD;
ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
told = SysTick->VAL;
while (1)
{
tnow = SysTick->VAL;
if (tnow != told)
{
if (tnow < told)
{
tcnt += told - tnow;
}
else
{
tcnt += reload - tnow + told;
}
told = tnow;
if (tcnt >= ticks)
{
break;
}
}
}
}
/**
* This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
#ifdef RT_USING_CPU_FFS
int __rt_ffs(int value)
{
if (!value) return 0;
return __CLZ(__RBIT(value)) + 1;
}
#endif
#ifdef RT_USING_FINSH
#include <finsh.h>
static void reboot(uint8_t argc, char **argv)
{
SYS_UnlockReg();
SYS->IPRST0 |= SYS_IPRST0_CHIPRST_Msk;
}
MSH_CMD_EXPORT(reboot, Reboot System);
#endif /* RT_USING_FINSH */
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