1 | #include <avr/interrupt.h>
|
2 | #include <avr/iocan32.h>
|
3 | //#include <avr/ioc.h>
|
4 | #include <avr/interrupt.h>
|
5 | #define F_CPU 16000000UL /* Quarz mit 16 Mhz */
|
6 | #include <avr/delay.h> /* definiert _delay_ms() ab avr-libc Version 1.2.0 */
|
7 |
|
8 |
|
9 | #define RXB8 1
|
10 | #define TXB8 0
|
11 | #define UPE 2
|
12 | #define OVR 3
|
13 | #define FE 4
|
14 | #define UDRE 5
|
15 | #define RXC 7
|
16 |
|
17 | #define FRAMING_ERROR (1<<FE)
|
18 | #define PARITY_ERROR (1<<UPE)
|
19 | #define DATA_OVERRUN (1<<OVR)
|
20 | #define DATA_REGISTER_EMPTY (1<<UDRE)
|
21 | #define RX_COMPLETE (1<<RXC)
|
22 |
|
23 | // USART1 Receiver buffer
|
24 | #define RX_BUFFER_SIZE1 8
|
25 | char rx_buffer1[RX_BUFFER_SIZE1];
|
26 | unsigned char rx_wr_index1,rx_rd_index1,rx_counter1;
|
27 | // This flag is set on USART1 Receiver buffer overflow
|
28 | // bit rx_buffer_overflow1;
|
29 | char rx_buffer_overflow1; //Kläre BIT
|
30 |
|
31 |
|
32 | // USART1 Receiver interrupt service routine used for K-Line receiving
|
33 | ISR(USART1_RXC_vect)
|
34 | {
|
35 | char status,data;
|
36 | status=UCSR1A;
|
37 | data=UDR1;
|
38 | if ((status & (FRAMING_ERROR | PARITY_ERROR | DATA_OVERRUN))==0)
|
39 | {
|
40 | rx_buffer1[rx_wr_index1]=data;
|
41 | if (++rx_wr_index1 == RX_BUFFER_SIZE1) rx_wr_index1=0;
|
42 | if (++rx_counter1 == RX_BUFFER_SIZE1)
|
43 | {
|
44 | rx_counter1=0;
|
45 | rx_buffer_overflow1=1;
|
46 | };
|
47 | };
|
48 | }
|
49 |
|
50 | ISR (TIMER1_OVF_vect)
|
51 | {
|
52 | TCNT1H=0x1e;
|
53 | TCNT1L=0x7c;
|
54 | if ( PINE & (1<<PINE7) ) {
|
55 | PORTE &= ~(1 << 7);
|
56 | }
|
57 | else {
|
58 | PORTE |= (1 << 7);
|
59 | }
|
60 | }
|
61 |
|
62 | // Get a character from the USART1 Receiver buffer
|
63 | char getchar1(void)
|
64 | {
|
65 | char data;
|
66 | while (rx_counter1==0);
|
67 | data=rx_buffer1[rx_rd_index1];
|
68 | if (++rx_rd_index1 == RX_BUFFER_SIZE1) rx_rd_index1=0;
|
69 | cli();
|
70 | --rx_counter1;
|
71 | sei();
|
72 | return data;
|
73 | }
|
74 |
|
75 | // FUNCTION Prototypes::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
|
76 | void seriell_int(void);
|
77 | void putchar1(char c);
|
78 | void putchar0(char c);
|
79 | void timer_init(void);
|
80 |
|
81 | void putchar1(char c)
|
82 | {
|
83 | while ((UCSR1A & DATA_REGISTER_EMPTY)==0)
|
84 | {
|
85 | // Toggle pin;
|
86 | }
|
87 | UDR1=c;
|
88 | }
|
89 |
|
90 | void putchar0(char c)
|
91 | {
|
92 | while ((UCSR0A & DATA_REGISTER_EMPTY)==0);
|
93 | UDR0=c;
|
94 | }
|
95 |
|
96 | void seriell_int(void)
|
97 | {
|
98 | // USART0 initialization
|
99 | // Communication Parameters: 8 Data, 1 Stop, No Parity
|
100 | // USART0 Receiver: On
|
101 | // USART0 Transmitter: On
|
102 | // USART0 Mode: Asynchronous
|
103 | // USART0 Baud rate: 19200
|
104 | UCSR0A=0x00;
|
105 | UCSR0B=0x98;
|
106 | UCSR0C=0x06;
|
107 | UBRR0H=0x00;
|
108 | UBRR0L=0x33;
|
109 | // USART1 initialization
|
110 | // Communication Parameters: 8 Data, 1 Stop, No Parity
|
111 | // USART1 Receiver: On
|
112 | // USART1 Transmitter: On
|
113 | // USART1 Mode: Asynchronous
|
114 | // USART1 Baud rate: 19200
|
115 | UCSR1A=0x00;
|
116 | UCSR1B=0x98;
|
117 | UCSR1C=0x06;
|
118 | UBRR1H=0x00;
|
119 | UBRR1L=0x33;
|
120 | }
|
121 |
|
122 | void timer_init(void)
|
123 | {
|
124 |
|
125 | // Timer/Counter 1 initialization
|
126 | // Clock source: System Clock
|
127 | // Clock value: 62,500 kHz
|
128 | // Mode: Normal top=FFFFh
|
129 | // OC1A output: Discon.
|
130 | // OC1B output: Discon.
|
131 | // OC1C output: Discon.
|
132 | // Noise Canceler: Off
|
133 | // Input Capture on Falling Edge
|
134 | TCCR1A=0x00;
|
135 | TCCR1B=0x04;
|
136 | TCNT1H=0x1e;
|
137 | TCNT1L=0x7c;
|
138 | ICR1H=0x00;
|
139 | ICR1L=0x00;
|
140 | OCR1AH=0x00;
|
141 | OCR1AL=0x00;
|
142 | OCR1BH=0x00;
|
143 | OCR1BL=0x00;
|
144 | OCR1CH=0x00;
|
145 | OCR1CL=0x00;
|
146 | TIMSK1=0x01;
|
147 | }
|
148 |
|
149 | // PORTA |= (1 << 2); /* setzt Bit 2 an PortA auf 1 */
|
150 | // PORTA &= ~(1 << 2); /* loescht Bit 2 an PortA */
|
151 |
|
152 | // MAIN :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
|
153 | //
|
154 | // ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
|
155 | int main (void)
|
156 | {
|
157 | char c;
|
158 | c = 0x51;
|
159 |
|
160 | CLKPR = 0x80; //Change System CLK-Prescaler to 1
|
161 | CLKPR = 0x00; //Change System CLK-Prescaler to 1
|
162 | PORTE = 0xFF;
|
163 | DDRE = 0xE0;
|
164 | seriell_int();
|
165 | timer_init();
|
166 | sei();
|
167 | while (1)
|
168 | {
|
169 | putchar0(c);
|
170 | putchar1(c);
|
171 | _delay_ms(200);
|
172 | }
|
173 | //never goes here!
|
174 | return 0;
|
175 | }
|
Thread beobachten
Seitenaufteilung abschalten