ir.c

NEC527多功能电表完整源代码,包括LCD驱动,显示,计量,存储,整个527驱动程序!

#pragma interrupt INTP7         MD_INTP7
#pragma interrupt INTTM000     MD_INTTM000
#include "includes.h"

unsigned char CommParity;
unsigned char UartRxByte;
unsigned char UartBitCount;
unsigned char RcKeyCode;

void IrStartToRx( void )
{
    UartBitCount = 9;
    UartRxByte = 0;
    CommParity = UART_BIT_9_L;
    TMIF000 = 0;
    TMMK000 = 1;
    PMK7 = 0;
    PIF7 = 0;
}

void INTP0Init( void )
{
    PMK7 = 1;
    PIF7 = 0;
    ISC.0 = 0; 
    ClrIORBit( EGP, BIT7 ); 
    SetIORBit( EGN, BIT7 );
    PMK7 = 0;
}

__interrupt void MD_INTP7( void )
{    
    PIF7 = 0;
    if ( CommPortChose == 0 )
    {
        CommPortChose = IR_PORT;
    }
    _wait_time = COMM_TIMEOUT;

    if ( CommPortChose == IR_PORT )
    {
        PMK7 = 1;
        TMMK000 = 1;
        TMC00 = 0x00;
        CRC00 = 0x00;
        PRM00 = 0x01;
        CR000 = ( UART_BIT_TIME_1200 + UART_HALF_BIT_TIME_1200 );
        TMMK000 = 0;
        TMC00 = 0x0C;
    }
    else if ( CommPortChose == IR_RC )
    {
        if ( PowerStateFlag &PS_BREAKPOWER_FLAG )
        {
            IrOn( 15 );
        }
        else
        {
            IR_OFF();
        }

        if ( CommPortChose == IR_RC )
        {
            if ( ( FramePointer > 16 ) && ( FramePointer <= 24 ) )
            {
                unsigned short temp = TM00;

                RcKeyCode >>= 1;
                if ( ( temp >= 2000 ) && ( ( temp <= 2500 ) ) )
                {
                    RcKeyCode &= ( unsigned char ) (  ~ 0x80 );
                }
                else if ( ( temp >= 4000 ) && ( ( temp <= 5000 ) ) )
                {
                    RcKeyCode |= 0x80;
                }
            }
            
            TMC00 = 0x00;
            if ( FramePointer > 24 )
            {
                FramePointer = 0;
                TMC00 = 0x00;
                SYS_EVT_ADD( EVT_RC );
                CommPortChose |= COMM_RX_FINISH;
            }
            else
            {
                FramePointer++;
                TMC00 = 0x0C;
            }
        }
    }
}

__interrupt void MD_INTTM000( void )
{
    unsigned char timerAtemp1;

    TMIF000 = 0;
    TMC00 = 0x00;
    CR000 = UART_BIT_TIME_1200;
    TMC00 = 0x0C;
    timerAtemp1 = IR_RX_IN &IR_RX;
    if ( UartBitCount > 1 )
    {
        UartRxByte >>= 1;
        if ( timerAtemp1 )
        {
            UartRxByte |= 0x80;
            CommParity =  ~ CommParity;
        }
        UartBitCount--;
    }
    else
    {
        TMC00 = 0x00;
        TMMK000 = 1;
        if ( timerAtemp1 )
        {
            if ( ( UART_BIT_9_H == CommParity ) == 0 )
            {
                FrameBuffer[ 0 ] = 0;
            }
        }
        else
        {
            if ( ( UART_BIT_9_L == CommParity ) == 0 )
            {
                FrameBuffer[ 0 ] = 0;
            }
        }

        if ( FramePointer == 0 )
        {
            if ( UartRxByte == 0 )
            {
                if ( timerAtemp1 == 0 )
                {
                    CR000 = 0xffff;
                    CommPortChose = IR_RC;
                    TMC00 = 0x0C;
                }
            }
        }
        
        RxFrameDispose();
        IrStartToRx();
    }
}

void IrSendLow( void )
{
    TMC00 = 0x0C; 
    IR_TX_OUT &=  ~ IR_TX;
}

void IrSendHigh( void )
{
    TMC00 = 0x00; 
    IR_TX_OUT |= IR_TX;
    CommParity =  ~ CommParity;
}

void IrSendByte( unsigned short sData )
{
    unsigned char sBitCount;
    
    CommParity = UART_BIT_9_L;
    sData <<= 1;
    sData |= 0x0400;
    sBitCount = 11;
    TMC00 = 0x00;
    PRM00 = 0x01;
    CRC00 = 0x00;
    CR000 = 26;
    TOC00 |= BIT0 | BIT1;
    TMC00 = 0x0C; 
    P0.1 = 0;
    _disable_interrupt();
    do
    {
        if ( sBitCount != 2 )
        {
            if ( sData &0x0001 )
            {
                IrSendHigh();
            }
            else
            {
                IrSendLow();
            }
        }
        else
        {
            if ( CommParity == UART_BIT_9_H )
            {
                IrSendHigh();
            }
            else
            {
                IrSendLow();
            }
        }
        sData >>= 1;
        Delay( UART_BOND_RATE_1200 *4 );
    }while ( --sBitCount );
    _enable_interrupt();
}

void IrStartToTx( void )
{
    unsigned char ii;
    
    IrSendByte( 0xFE );
    for ( ii = 0; ii < FrameBuffer[ FRM_DATALEN ] + 12; ii++ )
    {
        IrSendByte( FrameBuffer[ii] );
    }
    _sys_evt_add( EVT_INIT_COMM );
}

void IrOff( void )
{
    IR_OFF_PD();
}

void IrOn( unsigned char tt )
{
    TimerCounter[ TIMER_PROC_IR_TOGGLE ] = tt;
    LCD_LIGHT_ON();
}

void IrPrepareForRxFromLowPower( void )
{
    INTP0Init();
    IrStartToRx();
}