WorkFiles/XC_SDK/XC6xx_ble_sdk/Bsp/bsp_timer.c

#include 	"Platform.h"
#include    "bsp_register_macro.h"



/* ---------------------------------------------------------------------------------------------------
- 函数名称: xc_timer_init
- 函数功能: 定时器初始化
- 函数形参：定时器号，定时多少us
- 创建日期: 2019-04-22
- 创 建 人：陈俊伟
----------------------------------------------------------------------------------------------------*/
void xc_timer_init(uint8_t timer_num,uint32_t us)
{
	__write_hw_reg32(CPR_CTLAPBCLKEN_GRCTL,0x80008); //TIMER_PCLK 时钟使能
	__write_hw_reg32(CPR_TIMER_CLK_CTL(timer_num),0x0F);//TIMERx_CLK 时钟控制寄存器 mclk_in(32MHz)/2*(0x0F + 0x1)
	__write_hw_reg32(TIMERx_TCR(timer_num),0x0);//不屏蔽定时器中断，不使能定时器timer_num，
	__write_hw_reg32(TIMERx_TCR(timer_num),0x2);//设置定时器工作在用户定义计数模式
	__write_hw_reg32(TIMERx_TLC(timer_num),us);//载入计数器计数初值(32bits),该值应大于等于 0x4
    __write_hw_reg32(TIMERx_TCR(timer_num),0x3);//使能定时器timer_num
	NVIC_EnableIRQ((IRQn_Type)(TIMER0_IRQn+timer_num));
}


/* ---------------------------------------------------------------------------------------------------
- 函数名称: TIMER3_Handler
- 函数功能: 定时器3服务函数
- 函数形参：无
- 创建日期: 2019-04-22
- 创 建 人：陈俊伟
----------------------------------------------------------------------------------------------------*/
void TIMER3_Handler(void)
{
	uint32_t val=0;
	__read_hw_reg32(TIMER3_TIC , val);
	//需要处理的定时器任务
	printf("TIMER3_Handler\n");
	
}