Infrared learning remote control based on stc89c52 single chip microcomputer

In smart TVs, network set-top boxes (TV boxes), the common mainstream remote control is nothing more than "infrared", "Bluetooth" two remote control methods. The "Bluetooth" remote control has attracted more and more attention from manufacturers and consumers in recent years because of its "no need to align", "can be controlled by the bend", and "distance control distance". However, there are still a large number of users who insist on it. The use of infrared remote control is due to the fact that many Bluetooth remote controls have many defects and problems at this stage, which affect the daily operation of the user.

Very detailed infrared learning remote control, stored in the 24c64 assembly subroutine, in your own design, just modify the IO call it, it is my engineering verification can learn most of the infrared remote control commonly used in the market

Using the stc89c52 microcontroller, the following is the assembly code:

;**********************************

;---------------------AT24C64 CODE-------------------------

;========================================================== =========

ICSTART: ;I2C start

SETB SDA

NOP

SETB SCK

NOP

CLR SDA

NOP

CLR SCK

RET

;========================================================== =========

ICSTOP: ;I2C ends

CLR SDA

NOP

CLR SCK

NOP

SETB SCK

NOP

SETB SDA

RET

;========================================================== =========

ICACK: ;I2C response

CLR SDA

NOP

SETB SCK

NOP

CLR SCK

RET

;========================================================== =========

NOACK: ;I2C no answer

SETB SDA

NOP

SETB SCK

NOP

CLR SCK

RET

;========================================================== =========

ICREADBIT: ;I2C reads one bit

SETB SDA

NOP

SETB SCK

NOP

MOV C, SDA

CLR SCK

RET

;------------------------------------------------- ---------

ICREADACK:

MOV R7, #200

SETB SDA

NOP

SETB SCK

NOP

READACKS:

JNB SDA, ACKEND

DJNZ R7, READACKS

SETB C

CLR SCK

RET

ACKEND:

CLR C

CLR SCK

RET

;========================================================== =========

ICREADBYTE: ;I2C reads a byte

MOV R7, #8

READLOOP:

LCALL ICREADBIT

RLC A

DJNZ R7, READLOOP

MOV R7, A

RET

;========================================================== =========

ICWRITEBIT: ;I2C write one

MOV SDA, C

NOP

SETB SCK

NOP

CLR SCK

RET

;========================================================== =========

ICWRITEBYTE: ;I2C writes a byte

MOV A, R7

MOV R7, #8

WRITELOOP:

RLC A

LCALL ICWRITEBIT

DJNZ R7, WRITELOOP

RET

;========================================================== =========

READAT:

MOV A, R7 ; Calculate the I2C address

MOV B, #208;144

MUL AB

MOV R2, B

MOV R3, A

ADC EV Charger

ADC EV charger

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