📄 spi.i
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#line 1 "spi.c" /0 #line 1 "C:\KEIL\C51\INC\REG52.H" /0 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; sfr T2CON = 0xC8; sfr RCAP2L = 0xCA; sfr RCAP2H = 0xCB; sfr TL2 = 0xCC; sfr TH2 = 0xCD; 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; 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; sbit EA = IE^7; sbit ET2 = IE^5; sbit ES = IE^4; sbit ET1 = IE^3; sbit EX1 = IE^2; sbit ET0 = IE^1; sbit EX0 = IE^0; sbit PT2 = IP^5; sbit PS = IP^4; sbit PT1 = IP^3; sbit PX1 = IP^2; sbit PT0 = IP^1; sbit PX0 = IP^0; 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; 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; sbit T2EX = P1^1; sbit T2 = P1^0; 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; #line 6 "spi.c" /0 #line 1 "C:\KEIL\C51\INC\STDIO.H" /0 typedef unsigned int size_t; #pragma SAVE #pragma REGPARMS extern char _getkey (void); extern char getchar (void); extern char ungetchar (char); extern char putchar (char); extern int printf (const char *, ...); extern int sprintf (char *, const char *, ...); extern int vprintf (const char *, char *); extern int vsprintf (char *, const char *, char *); extern char *gets (char *, int n); extern int scanf (const char *, ...); extern int sscanf (char *, const char *, ...); extern int puts (const char *); #pragma RESTORE #line 7 "spi.c" /0 #line 1 "C:\KEIL\C51\INC\INTRINS.H" /0 extern void _nop_ (void); extern bit _testbit_ (bit); extern unsigned char _cror_ (unsigned char, unsigned char); extern unsigned int _iror_ (unsigned int, unsigned char); extern unsigned long _lror_ (unsigned long, unsigned char); extern unsigned char _crol_ (unsigned char, unsigned char); extern unsigned int _irol_ (unsigned int, unsigned char); extern unsigned long _lrol_ (unsigned long, unsigned char); extern unsigned char _chkfloat_(float); extern void _push_ (unsigned char _sfr); extern void _pop_ (unsigned char _sfr); #line 8 "spi.c" /0 #line 1 "spi.h" /0 #line 1 "C:\KEIL\C51\INC\REG52.H" /0 #line 10 "C:\KEIL\C51\INC\REG52.H" /1 #line 4 "spi.h" /0#line 4 "spi.h" /0 sbit SCLK = P1^7; sbit MISO = P1^6; sbit CS = P1^4; typedef unsigned char uchar; typedef unsigned int uint; uchar read_one_word(); #line 9 "spi.c" /0 uchar read_one_word() { uchar i = 0; uchar temp = 0; uint one_data = 0; CS = 0; for(i = 0; i < 16; i ++) { one_data = one_data << 1; SCLK = 0; _nop_(); SCLK = 1; _nop_(); if(MISO == 1) { one_data = one_data | 0x01; } } SCLK = 0; CS = 1; return (one_data); } void Init_SPI() { CS = 1; MISO = 1; SCLK = 0; }
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