C语言高低字节转换

#include <iostream>
#include <stdint.h>
#include <stdio.h>#define _G_HI24_BYTE(x) (((x) >> 24) & 0xFF)
#define _G_HI16_BYTE(x) (((x) >> 16) & 0xFF)
#define _G_HI8_BYTE(x) (((x) >> 8) & 0xFF)
#define _G_HI_BYTE(x) ((x) & 0xFF)//#define	addr1_switch	HAL_GPIO_ReadPin(ADDR1_GPIO_PORT,ADDR1_GPIO_PIN)
//#define	addr2_switch	HAL_GPIO_ReadPin(ADDR2_GPIO_PORT,ADDR2_GPIO_PIN)
//#define	addr3_switch	HAL_GPIO_ReadPin(ADDR3_GPIO_PORT,ADDR3_GPIO_PIN)
//#define	addr4_switch	HAL_GPIO_ReadPin(ADDR4_GPIO_PORT,ADDR4_GPIO_PIN)
//#define	addr5_switch	HAL_GPIO_ReadPin(ADDR5_GPIO_PORT,ADDR5_GPIO_PIN)#define GetBit(Number,pos) ((Number >> pos) & 1)
#define SetBit(Number,pos) ((Number) |= (1<<pos))
#define ClrBit(Number,pos) ((Number) &=~(1<<pos))
#define FanBit(Number,pos) ((Number) ^= (1<<pos))using namespace std;
int main1();int main()
{/***1.uint16_t拆为2个uint8_t*****/uint16_t checksum = 257;/***1.1 运算法操作*****/uint8_t ck[2] = {0};ck[0] = (uint8_t)(checksum & 0xFF);ck[1] = (uint8_t)(checksum >> 8);printf("ck[0]:%d ck[1]:%d\n", ck[0], ck[1]);/***1.2 宏定义*****/ck[0] = _G_HI_BYTE(checksum);ck[1] = _G_HI8_BYTE(checksum);printf("_G_HI_BYTE ck[0]:%d ck[1]:%d\n", ck[0], ck[1]);/***2. 2个uint8_t合成uint16_t*****/ck[0] = 0x01;ck[1] = 0x01;/***2.1 按位合成*****/uint16_t checksum1 = ck[0]|ck[1]<<8;printf("checksum1:%d\n", checksum1);/***2.2 累加合成*****/uint16_t checksum2 = ck[0] + (ck[1]<<8);printf("checksum2:%d\n", checksum2);/***3 取Byte某一个bit******/uint8_t num = 0xAA;for(int i = 0; i < 8; i++){printf("GetBit%d:%x\n", i, GetBit(num,i));}num = 0;for(int i = 0; i < 8; i++){printf("ClrBit%d:%x\n", i, SetBit(num,i));}return 0;
}