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/*
* Copyright (c) 2017-2019, MindMotion AE Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-10-02 spaceman first version
*/
#include <rtthread.h>
#include <rthw.h>
#include <board.h>
#include <drv_uart.h>
// extern uint32_t SystemCoreClock;
// extern void SystemInit(void);
#ifdef RT_USING_FINSH
#include <finsh.h>
static void reboot(uint8_t argc, char **argv)
{
rt_hw_cpu_reset();
}
MSH_CMD_EXPORT(reboot, Reboot System);
#endif /* RT_USING_FINSH */
static void bsp_clock_config(void)
{
RemapVtorTable();
SystemClk_HSEInit(RCC_PLLMul_20);//启动PLL时钟，12MHz*20=240MHz
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//2：2，全局性函数，仅需设置一次
uint32_t sysclk = 0;
getSystemClock(&sysclk);
SysTick_Config(sysclk / RT_TICK_PER_SECOND);
SysTick->CTRL |= 0x00000004UL;
}
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
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;
}
}
}
}
void rt_hw_board_init()
{
bsp_clock_config();
#if defined(RT_USING_HEAP)
rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif
// volatile uint16_t i=0;
// rt_hw_uart_init();
// i = UINT16_MAX;
// while(i--); //wait for a while after uart initiated.
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}
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