help!connect mcu to printer and print data on it directly

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alec82

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mcu with printer

hi friends
i want to connect mcu to printer and print data on it directly.
anybody can help me on this prototocol? how i can print text or print graphic into the printer via parallel port?
best regards.
 

Re: help!connect mcu to printer and print data on it directl

8051 MCU - Centronic Parallel Printer thru PC Parallel Port Cable connection:


Driver sub-routine:
Code: 
ACK    bit P3.2
BUSY   bit P3.3
STROBE bit P3.4
Data   EQU P1
;
OutPrinter:
     MOV  Data,A ; place data
     JB   BUSY,$ ; waiting until not BUSY
     CLR  STROBE ; '0' a moment to create '0' pulse
     SETB STROBE ; back to '1'
     RET
 

    alec82

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