89C51 Programmer, 89c51 Programmer
Keywords: AT89C51, programmer circuit diagram
89C51 chip programmer, picture is small, look at it, with procedures
program:
#include "at89x52.h" #include "stdio.h" #include "intrins.h" #include "ctype.h"
SBIT RDY = P3 ^ 2; SBIT VPP = P3 ^ 3; SBIT P26 = P3 ^ 4; SBIT P27 = P3 ^ 5; SBIT P36 = P3 ^ 6; SBIT P37 = P3 ^ 7; Sbit PROG = P2 ^ 7;
Void init_serial () {SCON = 0x50; / * mode 1 * / tmod = 0x20; TH1 = 0xFD; PCON = 0x80; / * 38400bps * / TR1 = 1; / * load TMR1 * / Ti = 1; es = 1; }
Void init_pro () {p26 = 0; p27 = 0; p36 = 0; p37 = 0; VPP = 1; prOG = 1;}
Void Sendbyte (unsigned char da) / * send a byte * / {while (! ti); ti = 0; sbuf = da;} Unsigned char INTTOASCII (unsigned char a) / * change Dec to ascii hex code * / {ix (A<10) RETURN A + 48; IF (A>9) Return A + 55;}
Unsigned int getadr () / * get 5 DITI DEC ADR * / {UNSIGNED CHAR I, A [5]; for (i = 0; I<5; i ++) {while (! ri); ri = 0; a [i ] = SBUF-48;} return a [0] * 10000 + a [1] * 1000 + a [2] * 100 + a [3] * 10 + a [4];}
Unsigned char getdata () / * get 2 DITI HEX DATA * / {Unsigned Char D1, D2; While (! ri); ri = 0; D1 = TOINT (SBUF); While (! ri); ri = 0; d2 = Toint (SBUF); RETURN D1 * 16 + D2;} Unsigned INT DETCHIP (INT ADR) {P0 = 0xFF; P1 = ADR% 256; P2 = ADR / 256; init_Pro (); _nop _(); _nop _(); _NOP_(); _nop_(); _NOP_(); / * delay 10 US * / _NOP _(); _nop _(); _nop _(); _nop _(); _nop _(); return p0;} void read () {unsigned int ADR , MaxAdr; Uns; P0 = 0xFF; MaxAdr = getAdr (); for (ADR = 0; ADR {P1 = ADR% 256; P2 = ADR / 256; P26 = 0; p27 = 0; p36 = 1 P37 = 1; VPP = 1; prOG = 1; h = INTTOASCII (P0 / 16); SendByte (h); l = INTTOASCII (P0% 16); sendbyte (L);} init_Pro ();}
Unsigned int today {unsigned int adj, counter = 0; p0 = 0xff; for (ADR = 0; ADR {P1 = ADR% 256; P2 = ADR / 256; P26 = 0; p27 = 0; p36 = 1; p37 = 1; VPP = 1; prog = 1; _nop _(); _nop _(); _nop _(); _nop _(); _nop_(); / * delay 10 us * / _nop _(); _nop_(); _nop _(); _NOP _(); _NOP_(); if (p0! = 0xff) Counter ++;} init_Pro (); return counter;}
Unsigned Char ERASE (unsigned int NN, unsigned int p) {unsigned INT i; p0 = 0xff; p26 = 1; p27 = 0; p36 = 0; p37 = 0; VPP = 0; prOG = 1; for (i = 0 i<50000; i ++) _nop _(); switch (p) {case 0: prOg = 0; prog = 1; Break; case 1: prog = 0; _nop_(); prog = 1; break; case 2: prOg = 0; _nop_(); _NOP_(); prog = 1; Break; Case 3: prog = 0; _nop _(); _nop _(); _nop_(); prog = 1; breaf; casser 4: prog = 0; _nop_(); _NOP _(); _NOP_(); prog = 1; Break; Case 5: prog = 0; _nop _(); _nop _(); _nop_(); _nop _(); _nop_();
PROG = 1; Break; case 6: prog = 0; _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); _nop_(); prOg = 1; break; cas 7: prog = 0; _NOP _(); _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); _nop_(); prog = 1; break; casser 8: prog = 0; _nop _(); _nop _(); _nop_(); _nop _(); _nop _(); _nop _(); _nop _(); _NOP_(); prog = 1; break; default: prog = 0; for (i = 0; i prog = 1; Break;} _nop_(); _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); vpp = 1; for (i = 0; IIF (Test (nn) == 0 Return 's'; Else Return 'f';}
Unsigned char Write () {Unsigned int ADR, D, I; P26 = 0; P27 = 1; P36 = 1; P37 = 1; VPP = 0; prOG = 1; for (i = 0; I<4000; i ++) _nop _(); adr = getAdr (); d = getdata (); while (1) {if (ADR>50000) Break; p1 = ADR% 256; P2 = (ADR / 256) | 0x80; p0 = d; Ti = 0; SBUF = 's'; prog = 0; _nop _(); _NOP _(); _NOP_(); prog = 1; adr = getAdr (); d = getData (); while (! Rdy);} init_pro ); return 'f';}
Unsigned char Lock (unsigned char level) {unsigned int i; vpp = 0; if (level == 1) {P26 = 1; p27 = 1; p36 = 1; p37 = 1;} if (level == 2) { P26 = 1; p27 = 1; p36 = 0; p37 = 0;} if (level == 3) {p26 = 1; p27 = 0; p36 = 1; p37 = 0;} for (i = 0; i. 1881.4000; i ++) _nop _(); prop = 1; _nop _(); _nop _(); _nop _(); _nop _(); _nop_(); / * delay 10 us * / _nop _(); _nop _(); _NOP_() _nop _(); _NOP _(); prog = 0; _nop _(); _nop _(); _nop _(); _nop _(); _nop_(); / * delay 10 us * / _nop _(); _nop _(); _nop_(); _NOP_); _NOP _(); _NOP _(); prog = 1; _nop _(); _nop _(); _nop _(); _nop _(); _nop _(); while (); init_pro (); return 'o';}
Void main () {unsigned int Data ADR, L, DX; init_pro (); init_serial (); while (1) {init_pro (); scanf ("% c", & c); switch (c) {CASE 'C': Printf ("% C", 'o'); Break; Case 'D': Scanf ("% X", & ADR); Printf ("% X", Detchip (ADR)); Break; Case 'T': Scanf ("% U", & DX); Printf ("% U", Test (DX)); Break; Case 'R': read (); Break; Case 'E': Scanf ("% U,% u ", & arm, & dx; printf ("% C ", ERASE (ADR, DX)); Break; Case 'W': Printf ("% C ", WRITE ()); Break; Case 'L ': Scanf ("% U", & L); Printf ("% C", LOCK (L)); Break; Case' h ': Printf ("********* ER6Y Programmer Help Window * ********** \ n "); Break; default: Break;}}}
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