51單片機(jī)C語言學(xué)習(xí)筆記6:51單片機(jī)C語言頭文件及其使用
sfr P1 = 0x90;
也就是說,到底大寫,還是小寫,就是在這里面決定的。這就說明,如果你要用小寫,就得在頭文件中改為小寫。其實它都是為了編程序方便才這樣寫的,在程序編譯時,就會變成相應(yīng)的地址(如P1就變成了0x90)。
下面是一個標(biāo)準(zhǔn)的C51頭文件REG52.H:
(此文件一般在C:KEILC51INC下 ,INC文件夾根目錄里有不少頭文件,并且里面還有很多以公司分類的文件夾,里面也都是相關(guān)產(chǎn)品的頭文件。如果我們要使用自己寫的頭文件,使用的時候只需把對應(yīng)頭文件拷貝到INC文件夾里就可以了。)
/* BYTE Registers */
sfr P0 = 0x80;
sfr P1 = 0x90;
sfr P2 = 0xA0;
sfr P3 = 0xB0;
sfr PSW = 0xD0;
sfr ACC = 0xE0;
sfr B = 0xF0;
sfr SP = 0x81;
sfr DPL = 0x82;
sfr DPH = 0x83;
sfr PCON = 0x87;
sfr TCON = 0x88;
sfr TMOD = 0x89;
sfr TL0 = 0x8A;
sfr TL1 = 0x8B;
sfr TH0 = 0x8C;
sfr TH1 = 0x8D;
sfr IE = 0xA8;
sfr IP = 0xB8;
sfr SCON = 0x98;
sfr SBUF = 0x99;
/* 8052 Extensions */
sfr T2CON = 0xC8;
sfr RCAP2L= 0xCA;
sfr RCAP2H = 0xCB;
sfr TL2 = 0xCC;
sfr TH2 = 0xCD;
/* BIT Registers */
/* PSW */
sbit CY = PSW^7;
sbit AC = PSW^6;
sbit F0 = PSW^5;
sbit RS1 = PSW^4;
sbit RS0 = PSW^3;
sbit OV = PSW^2;
sbit P = PSW^0; //8052 only
/* TCON */
sbit TF1 = TCON^7;
sbit TR1 = TCON^6;
sbit TF0 = TCON^5;
sbit TR0 = TCON^4;
sbit IE1 = TCON^3;
sbit IT1 = TCON^2;
sbit IE0 = TCON^1;
sbit IT0 = TCON^0;
/* IE */
sbit EA = IE^7;
sbit ET2 = IE^5; //8052 only
sbit ES = IE^4;
sbit ET1 = IE^3;
sbit EX1 = IE^2;
sbit ET0 = IE^1;
sbit EX0 = IE^0;
/* IP */
sbit PT2 = IP^5;
sbit PS = IP^4;
sbit PT1 = IP^3;
sbit PX1 = IP^2;
sbit PT0 = IP^1;
sbit PX0 = IP^0;
/* P3 */
sbit RD= P3^7;
sbit WR = P3^6;
sbit T1= P3^5;
sbit T0= P3^4;
sbit INT1 = P3^3;
sbit INT0 = P3^2;
sbit TXD = P3^1;
sbit RXD = P3^0;
/* SCON */
sbit SM0 = SCON^7;
sbit SM1 = SCON^6;
sbit SM2 = SCON^5;
sbit REN = SCON^4;
sbit TB8 = SCON^3;
sbit RB8 = SCON^2;
sbit TI = SCON^1;
sbit RI = SCON^0;
/* P1 */
sbit T2EX = P1^1; // 8052 only
sbit T2 = P1^0; // 8052 only
/* T2CON */
sbit TF2 = T2CON^7;
sbit EXF2 = T2CON^6;
sbit RCLK = T2CON^5;
sbit TCLK = T2CON^4;
sbit EXEN2 = T2CON^3;
sbit TR2 = T2CON^2;
sbit C_T2 = T2CON^1;
sbit CP_RL2 = T2CON^0;
還有一點就是,現(xiàn)在有很多改進(jìn)型的單片機(jī),它們有很多新增的特殊功能寄存器在標(biāo)準(zhǔn)的reg51.h或reg52.h中沒有定義,這就需要自己加進(jìn)頭文件(相關(guān)廠家已經(jīng)把它們定義好了),當(dāng)然也可以直接在程序中定義。
如STC傳統(tǒng)51單片機(jī),要使用新增的特殊功能寄存器要include頭文件
http://space.ednchina.com/Upload/2009/4/8/aef22653-a6aa-42ed-9019-8ffe4f074c6e.rar
sfr AUXR = 0x8e;
sfr AUXR1 = 0xa2;
sfr P4 = 0xe8;
sfr XICON = 0xc0;
sfr IPH = 0xb7;
sfr WDT_CONTR = 0xe1;
sfr ISP_DATA = 0xe2;
sfr ISP_ADDRH = 0xe3;
sfr ISP_ADDRL = 0xe4;
sfr ISP_CMD = 0xe5;
sfr ISP_TRIG = 0xe6;
sfr ISP_CONTR = 0xe7;
sbit PX3 = XICON^7;
sbit EX3 = XICON^6;
sbit IE3 = XICON^5;
sbit IT3 = XICON^4;
sbit PX2 = XICON^3;
sbit EX2 = XICON^2;
sbit IE2 = XICON^1;
sbit IT2 = XICON^0;
頭文件STC12C5A60S2系列雙串口1T 8051單片機(jī)
頭文件STC12C5A60AD系列高速1T 8051單片機(jī)
頭文件STC12C5201AD系列高速1T 8051單片機(jī)
頭文件STC11F60XE高速總線系列1T 8051單片機(jī)
頭文件STC10F08XE高速總線系列1T 8051單片機(jī)
參考資料:
1)51單片機(jī)C語言頭文件及其使用——徐學(xué)軍單片機(jī)工作室
http://hi.baidu.com/xxjmcu/blog/item/6f77308dc53bf013b31bbaa7.html/cmtid/6aaaf78f561073e7f01f36a7
2)單片機(jī)中用c編程時頭文件reg51.h及reg52.h解析
http://blog.csdn.net/benben85/archive/2009/03/03/3951522.aspx
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