/********************************************************************* * * DMX library for Fraise pic18f device * ********************************************************************* * Author Date Comment ********************************************************************* * Antoine Rousseau may 2012 Original. ********************************************************************/ /* # This program is free software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, # MA 02110-1301, USA. */ #include <dmx.h> //serial port: #if DMX_UART_NUM==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 //(1 port equ) #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 unsigned char DMXRegisters[DMX_NBCHAN]; void Set250kB(void) { //baud rate : br=FOSC/[4 (n+1)] : n=FOSC/(4*br)-1 : br=250kHz, n=FOSC/1000000 - 1 #define BRGHL (FOSC/1000000 - 1) SPBRGHx=BRGHL/256; SPBRGx=BRGHL%256; } void Set96kB(void) { //baud rate : br=FOSC/[4 (n+1)] : n=FOSC/(4*br)-1 : br=96kHz, n=FOSC/384000 - 1 #define BRGHL96 (FOSC/384000 - 1) SPBRGHx=BRGHL96/256; SPBRGx=BRGHL96%256; } void DMXInit(void) { int i; for(i=0;i<DMX_NBCHAN;i++) DMXRegisters[i]=0; //clear all channels /*DMX_UART_PIN=1; DMX_UART_TRIS=0;*/ digitalSet(DMX_UART_PIN); pinModeDigitalOut(DMX_UART_PIN); BAUDCONxbits.BRG16=1; TXSTAxbits.TXEN=1; TXSTAxbits.BRGH=1; TXSTAxbits.TX9=1; TXSTAxbits.TX9D=1; RCSTAxbits.SPEN=1; } void DMXSet(unsigned int channel, unsigned char value) { if(channel==0) return; DMXRegisters[channel]=value; } void DMXService() { static int channel=-1; if(!TXSTAxbits.TRMT) return; if(!TXxIF) return; if(channel==-1) { Set96kB(); TXREGx=0; channel=0; } else if(channel==0) { Set250kB(); TXREGx=0; channel=1; } else { TXREGx=DMXRegisters[channel++]; if(channel==DMX_NBCHAN) channel=-1; } }