rt-thread-official/bsp/tkm32F499/Libraries/CMSIS_and_startup/sys.c

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#include "sys.h"
#include "HAL_misc.h"
void RemapVtorTable(void)
{
int i;
RCC->AHB1ENR |= 1<<13;//bkp clk,enable sram
//关ROM区中断
for(i = 0;i<90;i++)
{
NVIC_DisableIRQ((IRQn_Type)i);
}
SCB->VTOR = 0;
SCB->VTOR |= 0x1<<29;
for(i = 0;i < 512;i+=4)
*(u32*)(T_SRAM_BASE + i) = *(u32*)(T_SDRAM_BASE+i);
}
void AI_Responder_enable(void)
{
AI_Responder->ADDR1= 0x70807040;
// AI_Responder->ADDR0 = 0x70027080;
AI_Responder->ADDR1 = 0;
AI_Responder->CCR &= ~(0x3<<3);
AI_Responder->CCR |= 1;
while((AI_Responder->SR & 0x3) != 2);
}
void AI_Responder_disable(void)
{
AI_Responder->CCR &= ~1;
}
//外部中断配置函数
//只针对GPIOA~E
//参数:
//GPIOx:0~4,代表GPIOA~E
//BITx:需要使能的位例如PB12就填 12;
//TRIM:触发模式,1,下降沿;2,上升沿;3任意电平触发
//该函数一次只能配置1个IO口,多个IO口,需多次调用
//该函数会自动开启对应中断,以及屏蔽线
void Ex_NVIC_Config(u8 GPIOx,u8 BITx,u8 TRIM)
{
u8 EXTOFFSET=(BITx%4)*4;
RCC->APB2ENR|=1<<14; //使能SYSCFG时钟
SYSCFG->EXTICR[BITx/4]&=~(0x000F<<EXTOFFSET);//清除原来设置!!!
SYSCFG->EXTICR[BITx/4]|=GPIOx<<EXTOFFSET; //EXTI.BITx映射到GPIOx.BITx
//自动设置
EXTI->IMR|=1<<BITx; //开启line BITx上的中断(如果要禁止中断,则反操作即可)
if(TRIM&0x01)EXTI->FTSR|=1<<BITx; //line BITx事件下降沿触发
if(TRIM&0x02)EXTI->RTSR|=1<<BITx; //line BITx事件上升沿触发
}
//THUMB指令不支持汇编内联
//采用如下方法实现执行汇编指令WFI
void WFI_SET(void)
{
__ASM volatile("wfi");
}
//关闭所有中断(但是不包括fault和NMI中断)
void INTX_DISABLE(void)
{
__ASM volatile("cpsid i");
}
//开启所有中断
void INTX_ENABLE(void)
{
__ASM volatile("cpsie i");
}
//设置栈顶地址 __set_MSP(0x70002000);
//进入待机模式
void Sys_Standby(void)
{
SCB->SCR|=1<<2; //使能SLEEPDEEP位 (SYS->CTRL)
RCC->APB1ENR|=1<<28;//使能电源时钟
PWR->CSR|=1<<8; //设置WKUP用于唤醒
PWR->CR|=1<<2; //清除Wake-up 标志
PWR->CR|=1<<1; //PDDS置位
WFI_SET(); //执行WFI指令,进入待机模式
}
//系统软复位
void Sys_Soft_Reset(void)
{
SCB->AIRCR =0X05FA0000|(u32)0x04;
}
// TK499_NVIC_Init(2,2,TK80_IRQn,2);
//设置NVIC
//NVIC_PreemptionPriority:抢占优先级
//NVIC_SubPriority :响应优先级
//NVIC_Channel :中断编号
//NVIC_Group :中断分组 0~4
//注意优先级不能超过设定的组的范围!否则会有意想不到的错误
//组划分:
//组0:0位抢占优先级,4位响应优先级
//组1:1位抢占优先级,3位响应优先级
//组2:2位抢占优先级,2位响应优先级
//组3:3位抢占优先级,1位响应优先级
//组4:4位抢占优先级,0位响应优先级
//NVIC_SubPriority和NVIC_PreemptionPriority的原则是,数值越小,越优先
void TK499_NVIC_Init(u8 NVIC_PreemptionPriority,u8 NVIC_SubPriority,u8 NVIC_Channel,u8 NVIC_Group)
{
u32 temp;
NVIC_SetPriorityGrouping(NVIC_Group);//设置分组
temp=NVIC_PreemptionPriority<<(4-NVIC_Group);
temp|=NVIC_SubPriority&(0x0f>>NVIC_Group);
temp&=0xf; //取低四位
NVIC->ISER[NVIC_Channel/32]|=1<<NVIC_Channel%32;//使能中断位(要清除的话,设置ICER对应位为1即可)
NVIC->IP[NVIC_Channel]|=temp<<4; //设置响应优先级和抢断优先级
}
void TK80_IRQHandler(void)
{
if(TK80->SR & 0x1)
{
}
if(TK80->SR & 0x2)
{
}
if(TK80->SR & 0x4)
{
}
if(TK80->SR & 0x8)
{
}
TK80->SR |= 0;
}
//备用函数
//#define T_SRAM_FUN1 0x20000400
//copyAtoB((u32)LCD_PutPixel&0xFFFFFFFE,T_SRAM_FUN1,800);//加载函数到SRAM
//void copyAtoB(u32 srcAdd,u32 dstAdd,u16 len)
//{
// len = (len + 3)/4;
// while(len--)
// {
// *(u32*)dstAdd = *(u32*)srcAdd;
// dstAdd += 4 ;
// srcAdd +=4 ;
// }
//}