购买东西网站怎么做网站建设设计规划

官方SDK移植

1. 新建cc.h文件
   SDK包里面会用到很多数据类型，所以需要在该文件中定义一些常用的数据类型

#pragma once
#define     __I     volatile 
#define     __O     volatile 
#define     __IO    volatiletypedef   signed           char int8_t;
typedef   signed short     int int16_t;
typedef   signed           int int32_t;
typedef   unsigned         char uint8_t;
typedef   unsigned short   int uint16_t;
typedef   unsigned         int uint32_t;
typedef   unsigned long    long uint64_t;
typedef	  signed char  	 	   s8;		
typedef	  signed short int     s16;
typedef	  signed int 		   s32;
typedef	  signed long long int s64;
typedef	unsigned char 		   u8;
typedef	unsigned short int     u16;
typedef	unsigned int 		   u32;
typedef	unsigned long long int u64;

2. 移植文件
   需要移植的文件fsl_common.h、fsl_iomuxc.h、MCIMX6Y2.h

3. 主函数

#include "fsl_common.h"
#include "fsl_iomuxc.h"
#include "MCIMX6Y2.h"void clk_enable(void)
{CCM->CCGR0 = 0XFFFFFFFF;CCM->CCGR1 = 0XFFFFFFFF;CCM->CCGR2 = 0XFFFFFFFF;CCM->CCGR3 = 0XFFFFFFFF;CCM->CCGR4 = 0XFFFFFFFF;CCM->CCGR5 = 0XFFFFFFFF;CCM->CCGR6 = 0XFFFFFFFF;}
void led_init(void)
{/* 1、初始化IO复用 */IOMUXC_SetPinMux(IOMUXC_GPIO1_IO03_GPIO1_IO03,0); // 设置IO复用功能/* 2、、配置GPIO1_IO03的IO属性	*bit 16:0 HYS关闭*bit [15:14]: 00 默认下拉*bit [13]: 0 kepper功能*bit [12]: 1 pull/keeper使能*bit [11]: 0 关闭开路输出*bit [7:6]: 10 速度100Mhz*bit [5:3]: 110 R0/6驱动能力*bit [0]: 0 低转换率*/IOMUXC_SetPinConfig(IOMUXC_GPIO1_IO03_GPIO1_IO03,0X10B0); // 设置IO的上下拉、电阻等// 该函数第一个参数是IO配置寄存器，如果要复用为GPIO，就是IO03，第二个参数是要写入寄存器的值/* 3、初始化GPIO,设置GPIO1_IO03设置为输出  */GPIO1->GDIR |= (1 << 3);	/* 4、设置GPIO1_IO03输出低电平，打开LED0 */GPIO1->DR &= ~(1 << 3);			
}
void led_on(void)
{/* 将GPIO1_DR的bit3清零 	*/GPIO1->DR &= ~(1<<3); 
}
void led_off(void)
{/* 将GPIO1_DR的bit3置1 */GPIO1->DR |= (1<<3); 
}
void delay_short(volatile unsigned int n)
{while(n--){}
}
void delay(volatile unsigned int n)
{while(n--){delay_short(0x7ff);}
}
int main(void)
{clk_enable();		led_init();			while(1)			{	led_off();		delay(500);		led_on();		delay(500);		}return 0;
}