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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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