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//Charging pile, perform charging operation after the page reaches the specified page (this time you reach the specified page by touching)

//1. The picture with the picture number 0 is displayed when the power is turned on, and the picture with the number 1 is entered after 2s. 2. When the number is 2 by touch, turn on the charging relay for charging operation

//Get the PIC_ID of the current display page (address 0x03), send the get current page, page turning command, and receive the return value of the current page

#include

#include

unsigned char data_start,data_ok,RX5A,RXA5,RXLEN,RXCMD,RXADDR,RXDLEN,TXTIME,PAGE_TIME,page_flag=1;

unsigned char RX_BUF[2];

unsigned char TX_BUF[13]={0x5A,0xA5,0x03,0x81,0x03,0x02,

//Read control register PIC_ID (address 0x03) instruction (0x81)

0x5A,0xA5,0x04,0x80,0x03,0x00,0x01};

//Write control register 0x03 PIC_ID (address 0x03), occupying two bytes of instruction (0x80)

unsigned char TX_CNT,RX_CNT;//The pointer position of the transceiver buffer

sbit RTR1=P1^0;//Charge and power off relay

void main(void)

{

    int temp_s;

    //Power-on initialization

    PCON=PCON|0x80;//Configure the serial port baud rate clock to 22.1184bps, and the baud rate to 115200

    SCON=0x50;//Receive mode 1, allow serial port reception

    TMOD=0x21;//Timer 1 mode 2, Timer 0 mode 1

    TH1=255;

    TL1=255;

    TR1=1;

    TH0=0xB8;//10ms timer interrupt, calculation: (2^16-0xB800)*12*1/(22.1184*10^6)=0.01

    TL0=0x00;

    TR0=1;

    TXTIME=200;//Jump from page 0 to page 1 2s after booting

    data_start=0;

    data_ok=0;

    RTR1=1;//Turn on the refrigeration relay

    ES=1;

    ET0=1;

    EA=1;

    while(1)

    {

        if(data_ok==0xff)

        {

            data_ok=0;

            temp_s=RX_BUF[0]*256+RX_BUF[1];

            if(temp_s==0x0002)//When the second page is touched, the charging operation is performed

                RTR1=1;

            else

                RTR1=0;

        }

    }

}

void Time0_interrupt(void)  interrupt 2

{

    TF0 = 0;

    TH0 = 0xB8;

    TL0 = 0x00;

    TXTIME--;

        if(TXTIME == 0)

    {

        TXTIME = 20;//200ms Send once

        TX_CNT = 0;

        TI = 0;

        SBUF = TX_BUF[0];//TI = 1;

    }

}

void Uart_interrupt(void) interrupt 4

{

    unsigned char temp;

    if(RI)

    {

        RI=0;

        temp = SBUF;

        if(data_start==0)

        {

            RX5A=RXA5;

            RXA5=RXLEN;

            RXLEN=RXCMD;

            RXCMD=RXADDR;

            RXADDR=RXDLEN;

            RXDLEN=temp;

            //Check the sync frame data

            if((RX5A==0x5A)&&(RXA5==0xA5)&&(RXLEN==0x05)&&(RXCMD==0x81)

&&(RXADDR=0x03)&&(RXDLEN=0x02))

            { 

                data_start=0xff;

                RX_CNT=0;

            }

        }else

        {

            RX_BUF[RX_CNT]=temp;

            RX_CNT++;

            if(RX_CNT==2)

            { 

                data_start=0;

                data_ok=0xff;

            }

        }

    }

    if(TI)

    {

        TI=0;

        TX_CNT++;

        if(page_flag == 1)//Page turning is performed only once after startup

        {

            if(TX_CNT<13)

                {SBUF=TX_BUF[TX_CNT];}//TI = 1;

            else

            page_flag = 0;

        }else

        {

            if(TX_CNT<6)

             {SBUF=TX_BUF[TX_CNT];}//TI = 1

        }

    }

}