单片机成长之路(51基础篇) - 015 关于sdcc的多文件编译范例二
本文是续 单片机成长之路(51基础篇) - 009 关于sdcc的多文件编译范例(一)编写的。
在实际的工作中,单片机的头文件和功能函数不可能同全部放在同一个文件夹下面,我们把单片机成长之路(51基础篇) - 009 关于sdcc的多文件编译范例的代码进行重新拆分,然后把头文件归类到一个文件夹(include/)下面,便于管理。
拆分前文件目录结构:
├── delay.c
├── delay.h
├── main.c
└── makefile
拆分侯生成以下文件:
├── include //头文件文件夹
│ ├── delay.c //延时文件的头文件
│ ├── delay.h
│ ├── led.c //led灯头文件
│ ├── led.h
│ └── macro.h //宏定义头文件
├── main.bin //编译结果
├── main.c //主函数
└── makefile //make文件
文件内容如下:
main.c
#include "include/delay.h" #include "include/macro.h" #include "include/led.h" void main(void){ while(1){ led_0_7(100); } }
makefile(本文件做了改动,增加个头文件路径的变量include)
# CC 编译工具声明 # stc 烧录工具位置 # 功能是编译并完成下载 CC =sdcc stc =sudo python /home/jikexianfeng/51-demo/.stcflash/stcflash.py include = ./include/ all : main.bin download: main.bin $(stc) main.bin #main.bin : main.hex # ~/51-demo/.Hex2bin-2.5/hex2bin main.hex main.bin : main.hex objcopy -I ihex -O binary main.hex main.bin main.hex : main.ihx packihx main.ihx > main.hex main.ihx : main.rel delay.rel led.rel $(CC) main.rel led.rel delay.rel main.rel : main.c $(include)delay.c $(include)macro.h $(CC) -c main.c led.rel : $(include)led.c $(include)delay.c $(include)macro.h $(CC) -c $(include)led.c delay.rel : $(include)delay.c $(include)macro.h $(CC) -c $(include)delay.c cleanall: rm -rf *.lk *.bin *.asm *.lst *.mem *.rst *.lnk *.rel *.sym *.ihx *.hex *.map clean: rm -rf *.asm *.lst *.mem *.rst *.lnk *.rel *.sym *.ihx *.hex *.map *.lk
include/macro.h
1 #ifndef MACRO_H 2 #define MACRO_H 3 4 #include "8051.h" 5 6 #define uint unsigned int 7 #define uchar unsigned char 8 9 #endif
include/macro.h
1 #ifndef LED_H 2 #define LED_H 3 #include"macro.h" 4 5 void led_0_7(uint xms); 6 7 #endif
include/led.h
#include "delay.h" #include "macro.h" uchar tab[8] = {0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80}; void led_0_7(uint xms){ uchar i; for(i=0;i<8;i++){ P1 = tab[i]; Delay(xms); } }
include/delay.c
1 #include "delay.h" 2 #include"macro.h" 3 4 void Delay(uint xms){ 5 uint i,j; 6 for(i=xms;i>0;i--) 7 for(j=110;j>0;j--); 8 }
include/delay.h
1 #ifndef DELAY_H 2 #define DELAY_H 3 4 #include"macro.h" 5 6 void Delay(uint xms); 7 8 #endif