源：http://blog.163.com/zhaojun_xf/blog/static/30050580200951023046891

來自：

作者：龍圖開發網 ?

文章來源：龍圖開發網 ?

時間：2009-5-18 10:15:01?

//LED調光－DMX512燈光協義接收控制 //龍圖開發網 http://www.longtoo.com 原創，轉載請注明出處 //ICC-AVR application builder : 2007/12/14 // Target : M8 // Crystal: 8.000Mhz #include <iom8v.h> #include <macros.h>#define uint unsigned int //16 bit #define uchar unsigned char //8 bit #define bit char // 1 bit #define ulong unsigned long //32 bit#define FLASH_LED_PORTC PORTC #define FLASH_LED_PORTD PORTD #define FLASH_LED_R_ON (1<<PC1) #define FLASH_LED_R_OFF (0<<PC1) #define FLASH_LED_G_ON (1<<PC2) #define FLASH_LED_G_OFF (0<<PC2) #define FLASH_LED_B_ON (1<<PC0) #define FLASH_LED_B_OFF (0<<PC0) #define DMX_control_receive (0<<PD2) #define DMX_control_send (1<<PD2)int JS_01; int JS_001=0,JS_002=0,JS_003=0; int CUR_BYTE_A=0,IADDRESS_A=1; char JS_1=0,JS_2=0,JS_3=0,JS_4=0,JS_5=0,JS_6=0; // RED GREEN BLUE RGB char DMX_DATA_1=0,DMX_DATA_2=0,DMX_DATA_3=0,DMX_DATA_4=0;char LED_TRANSFER_DATA[256]= {50,50,50,50,50,50,49,49,49,49,49,48,48,48,48,48,47,47,47,47,47,46,46,46,46,46,45,45,45,45,45,44,44,44,44,44,43,43,43,43,43,42,42,42,42,42,41,41,41,41,41,40,40,40,40,40,39,39,39,39,39,38,38,38,38,38,37,37,37,37,37,36,36,36,36,36,35,35,35,35,35,34,34,34,34,34,33,33,33,33,33,32,32,32,32,32,31,31,31,31,31,30,30,30,30,30,29,29,29,29,29,28,28,28,28,28,27,27,27,27,27,26,26,26,26,26,25,25,25,25,25,24,24,24,24,24,23,23,23,23,23,22,22,22,22,22,21,21,21,21,21,20,20,20,20,20,19,19,19,19,19,18,18,18,18,18,17,17,17,17,17,16,16,16,16,16,15,15,15,15,15,14,14,14,14,14,13,13,13,13,13,12,12,12,12,12,11,11,11,11,11,10,10,10,10,10,9,9,9,9,9,8,8,8,8,8,7,7,7,7,7,6,6,6,6,6,5,5,5,5,5,4,4,4,4,4,3,3,3,3,3,2,2,2,2,2,1,1,1,1,1,0,0,0,0,0 };//------------------------------------------------ void port_init(void) {PORTB = 0xFF;DDRB = 0x00;PORTC = 0xFF; //m103 output onlyDDRC = 0xFF;PORTD = 0xFF;DDRD = 0xFF; }//TIMER0 initialisation - prescale:64 // WGM: Normal // desired value: 1mSec // actual value: 1.000mSec (0.0%) void timer0_init(void) {TCCR0 = 0x00; //stopTCNT0 = 0x83; //set countTCCR0 = 0x03; //start timer }#pragma interrupt_handler timer0_ovf_isr:10 void timer0_ovf_isr(void) {TCNT0 = 0x83; //reload counter value }//TIMER1 initialisation - prescale:8 // WGM: 0) Normal, TOP=0xFFFF // desired value: 100uSec // actual value: 100.000uSec (0.0%) void timer1_init(void) { TCCR1B = 0x00; //stop TCNT1H = 0xFF; //setup TCNT1L = 0x9C; OCR1AH = 0x00; OCR1AL = 0x64; OCR1BH = 0x00; OCR1BL = 0x64; ICR1H = 0x00; ICR1L = 0x64; TCCR1A = 0x00; TCCR1B = 0x02; //start Timer }#pragma interrupt_handler timer1_ovf_isr:9 void timer1_ovf_isr(void) {//TIMER1 has overflowedTCNT1H = 0xFF; //reload counter high valueTCNT1L = 0x9C; //reload counter low value LED_RGB(); }//UART0 initialisation // desired baud rate: 250000 // actual: baud rate:250000 (0.0%) // char size: 8 bit // parity: Disabled void uart0_init(void) {UCSRB = 0x00; // RXEN //disable while setting baud rateUCSRA = 0x02; // RXC=0-- RXC TXC UDRE FE DOR PE U2X MPCMUCSRB = 0xFC; // 0XDF -- RXCIE TXCIE UDRIE RXEN TXEN UCSZ2 RXB8 TXB8UCSRC = 0x06; // 9 bit-- URSEL UMSEL UPM1 UPM0 USBS UCSZ1 UCSZ0 UCPOL UBRRH = 0x00; // set baud rate hiUCSRC = 0x8E; // 9 bit 86 UBRRL = 0x03; //set baud rate lo ( 0x01 u2x=0) }#pragma interrupt_handler uart0_rx_isr:12 void uart0_rx_isr(void) { DMX_RECEIVE(); //uart has received a character in UDR }#pragma interrupt_handler uart0_udre_isr:13 void uart0_udre_isr(void) {//character transferred to shift register so UDR is now empty//FLASH_LED_PORTD=DMX_control_receive; //DMX_control_receive; //pd2=0 PD2 }#pragma interrupt_handler uart0_tx_isr:14 void uart0_tx_isr(void) {//character has been transmitted }//call this routine to initialise all peripherals void init_devices(void) {//stop errant interrupts until set upCLI(); //disable all interrupts port_init();timer0_init();timer1_init();uart0_init();MCUCR = 0x00;GICR = 0x00;TIMSK = 0x05; //timer interrupt sourcesSEI(); //re-enable interrupts//all peripherals are now initialised }void LED_FLASH() {++JS_01;if (JS_01==500){//FLASH_LED_PORTC^=FLASH_LED_R_OFF;//FLASH_LED_PORTC^=FLASH_LED_G_OFF;//FLASH_LED_PORTC^=FLASH_LED_B_OFF; }if (JS_01==1000){JS_01&=0;} }void LED_RGB() //100us {//FLASH_LED_PORTC=FLASH_LED_R_ON|FLASH_LED_R_ON|FLASH_LED_R_ON;++JS_1;++JS_2;++JS_3;if (JS_1==50) {JS_1=0;FLASH_LED_PORTC=FLASH_LED_R_OFF|FLASH_LED_G_OFF|FLASH_LED_B_OFF;} //ALL==0if (JS_1==LED_TRANSFER_DATA[DMX_DATA_1]) {FLASH_LED_PORTC|=0x02;}//FLASH_LED_R_ON;} // on==1if (JS_1==LED_TRANSFER_DATA[DMX_DATA_2]) {FLASH_LED_PORTC|=0x04;}//FLASH_LED_G_ON;}if (JS_1==LED_TRANSFER_DATA[DMX_DATA_3]) {FLASH_LED_PORTC|=0x01;}//FLASH_LED_B_ON;}if (JS_1==LED_TRANSFER_DATA[DMX_DATA_4]) {FLASH_LED_PORTC|=0x02;FLASH_LED_PORTC|=0x04;FLASH_LED_PORTC|=0x01; }//RGB }//***************************************** void DMX_RECEIVE() { unsigned char status, resh, resl;char DMX_ADDRESS_PAN,CODE_Data,DMX_DATA_PAN;while ( !(UCSRA & (1<<RXC)) ); // NO USE // from buffer status = UCSRA; resh = UCSRB; resl = UDR;resh = (resh >> 1) & 0x01; // TAKE RXB8 if (resh==1) //(1<<RXB8)){ //LED_DISPLAY_V4=15; //test ok DMX_DATA_PAN=1; if (CUR_BYTE_A==IADDRESS_A+0) DMX_DATA_1=resl; if (CUR_BYTE_A==IADDRESS_A+1) DMX_DATA_2=resl; if (CUR_BYTE_A==IADDRESS_A+2) DMX_DATA_3=resl;if (CUR_BYTE_A==IADDRESS_A+3) DMX_DATA_4=resl;if (DMX_ADDRESS_PAN==1) ++CUR_BYTE_A; //DMX address count registerif (CUR_BYTE_A==513) CUR_BYTE_A&=0; } else //(0<<RXB8) { CODE_Data=resl; if (CODE_Data==0) { //test ok CUR_BYTE_A = 0; CODE_Data = 0xff;DMX_ADDRESS_PAN=1;}elseDMX_ADDRESS_PAN=0;} // DMX_PORTD|=DMX_control_send; //pd6=1 }void main(void) {init_devices();FLASH_LED_PORTD=DMX_control_receive; //DMX_control_receive; //pd2=0 PD2//insert your functional code here... }

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轉載于:https://www.cnblogs.com/LittleTiger/p/3941177.html

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