作者：龙图开发网
//LED调光－DMX512灯光协义接收控制
//龙图开发网 http://www.longtoo.com 原创，转载请注明出处
//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 only
DDRC = 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; //stop
TCNT0 = 0x83; //set count
TCCR0 = 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 overflowed
TCNT1H = 0xFF; //reload counter high value
TCNT1L = 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 rate
UCSRA = 0x02; // RXC=0-- RXC TXC UDRE FE DOR PE U2X MPCM
UCSRB = 0xFC; // 0XDF -- RXCIE TXCIE UDRIE RXEN TXEN UCSZ2 RXB8 TXB8
UCSRC = 0x06; // 9 bit-- URSEL UMSEL UPM1 UPM0 USBS UCSZ1 UCSZ0 UCPOL
UBRRH = 0x00; // set baud rate hi
UCSRC = 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 up
CLI(); //disable all interrupts
port_init();
timer0_init();
timer1_init();
uart0_init();
MCUCR = 0x00;
GICR = 0x00;
TIMSK = 0x05; //timer interrupt sources
SEI(); //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==0
if (JS_1==LED_TRANSFER_DATA[DMX_DATA_1]) {FLASH_LED_PORTC|=0x02;}//FLASH_LED_R_ON;} // on==1
if (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 register
if (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;
}
else
DMX_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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