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- #include <string.h>
- #include <config.h>
- #include <core.h>
- #include <dmx_slave.h>
- #if DMX_SLAVE_UART_PORT==1
- #define SPBRGx SPBRG1
- #define SPBRGHx SPBRGH1
- #define BAUDCONx BAUDCON1
- #define BAUDCONxbits BAUDCON1bits
- #define RCREGx RCREG1
- #define RCSTAx RCSTA1
- #define RCSTAxbits RCSTA1bits
- #define TXREGx TXREG1
- #define TXSTAx TXSTA1
- #define TXSTAxbits TXSTA1bits
- #define RCxIF PIR1bits.RC1IF
- #define TXxIF PIR1bits.TX1IF
- #define RCxIE PIE1bits.RC1IE
- #define TXxIE PIE1bits.TX1IE
- #define RCxIP IPR1bits.RC1IP
- #define TXxIP IPR1bits.TX1IP
- #else
- #define SPBRGx SPBRG2
- #define SPBRGHx SPBRGH2
- #define BAUDCONx BAUDCON2
- #define BAUDCONxbits BAUDCON2bits
- #define RCREGx RCREG2
- #define RCSTAx RCSTA2
- #define RCSTAxbits RCSTA2bits
- #define TXREGx TXREG2
- #define TXSTAx TXSTA2
- #define TXSTAxbits TXSTA2bits
- #define RCxIF PIR3bits.RC2IF
- #define TXxIF PIR3bits.TX2IF
- #define RCxIE PIE3bits.RC2IE
- #define TXxIE PIE3bits.TX2IE
- #define RCxIP IPR3bits.RC2IP
- #define TXxIP IPR3bits.TX2IP
- #endif
- #ifndef BAUDCON1
- #define SPBRG1 SPBRG
- #define SPBRGH1 SPBRGH
- #define BAUDCON1 BAUDCON
- #define BAUDCON1bits BAUDCONbits
- #define RCREG1 RCREG
- #define RCSTA1 RCSTA
- #define RCSTA1bits RCSTAbits
- #define TXREG1 TXREG
- #define TXSTA1 TXSTA
- #define TXSTA1bits TXSTAbits
- #define RC1IF RCIF
- #define TX1IF TXIF
- #define RC1IE RCIE
- #define TX1IE TXIE
- #define RC1IP RCIP
- #define TX1IP TXIP
- #endif
- static unsigned char DMXRegisters[DMX_SLAVE_NBCHAN];
- #define STATE_NONE -1
- #define STATE_BREAKRCVD 0
- #define STATE_DMX 1
- static char State = STATE_NONE;
- static unsigned int DMXPointer = 0;
- static unsigned int MaxReceivedChannel;
- char DMXSlaveHadInterrupt = 0;
- void Set250kB(void)
- {
- #define BRGHL (FOSC/1000000 - 1)
- SPBRGHx=BRGHL/256;
- SPBRGx=BRGHL%256;
- }
- static void Serial_Init_Receiver() {
- WREG=RCREGx;
- __asm nop __endasm ;
- WREG=RCREGx;
- RCSTAxbits.CREN = 0;
- RCSTAxbits.CREN = 1;
- RCSTAxbits.ADDEN = 0;
- RCxIE = 1;
- TXxIE = 0;
- }
- void DMXSlaveInit(void)
- {
- int i;
-
- for(i=0;i<DMX_SLAVE_NBCHAN;i++) DMXRegisters[i]=0;
-
-
-
- BAUDCONxbits.BRG16=1;
- Set250kB();
- Serial_Init_Receiver();
- TXSTAxbits.TXEN=1;
- TXSTAxbits.BRGH=1;
- RCSTAxbits.RX9 = 1;
- RCxIP = 0;
- RCSTAxbits.SPEN=1;
- }
- unsigned char DMXSlaveGet(unsigned int channel)
- {
- if(channel==0) return 0;
- return DMXRegisters[channel];
- }
- void DMXSlaveISR()
- {
- unsigned char Byte;
-
- if(!RCxIF) return;
-
-
-
-
-
- if(RCSTAxbits.OERR){
- State=STATE_NONE;
-
- WREG=RCREGx;
- __asm nop __endasm ;
- WREG=RCREGx;
- RCSTAxbits.CREN=0;
- RCSTAxbits.CREN=1;
- return;
- }
- if(RCSTAxbits.FERR){
-
-
- State=STATE_BREAKRCVD;
- WREG=RCREGx;
-
- while(!DMX_SLAVE_UART_PIN);
-
- if(TXxIF) TXREGx = 0;
- WREG=RCREGx;
-
-
-
- return;
- }
- if(!RCSTAxbits.RX9D){
- State=STATE_NONE;
- WREG=RCREGx;
- return;
- }
- Byte = RCREGx;
-
-
- if(State==STATE_BREAKRCVD){
-
- if(Byte==0){
- State=STATE_DMX;
- DMXPointer=0;
- if(TXxIF) TXREGx = 1;
- DMXSlaveHadInterrupt = 1;
- }
- else {
- State=STATE_NONE;
- if(TXxIF) TXREGx = 255;
- }
- return;
- }
-
- if(State==STATE_DMX){
- if(TXxIF) TXREGx = 2;
- DMXPointer++;
- if(MaxReceivedChannel < DMXPointer) MaxReceivedChannel = DMXPointer;
- if(DMXPointer < DMX_SLAVE_NBCHAN) DMXRegisters[DMXPointer] = Byte;
- }
-
- }
- unsigned int DMXSlaveGetMaxReceivedChannel()
- {
- unsigned int tmp = MaxReceivedChannel;
- RCxIE = 0;
- MaxReceivedChannel = 0;
- RCxIE = 1;
-
- return tmp;
- }
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