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| Rev 543 | Rev 723 | ||
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| Line 33... | Line 33... | ||
| 33 | 33 | ||
| 34 | 34 | ||
| 35 | int main(void) |
35 | int main(void) |
| 36 | { |
36 | { |
| - | 37 | char i,Parity; // Bit-Counter and Parity Bit |
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| 37 | char i,Parity; // Bit-Counter and Parity Bit |
38 | DDRA = 0b011; // PORT A INPUT: RESET; OUTPUT: Sync+Data |
| 38 | DDRA = 0b011; // PORT A INPUT: /RESET; OUTPUT: Sync+Data |
39 | DDRB = 0b00000000; // PORT B INPUT: Jumper for Bypass |
| - | 40 | DDRD = 0b0000000; // PORT D INPUT: Switches + DX7-Sync |
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| 39 | DDRD = 0b0000000; // PORT D INPUT: Switches + DX7-Sync |
41 | PORTA = 0b111; // Pull-Up for /RESET, High for Sync+Data |
| Line 40... | Line 42... | ||
| 40 | PORTA = 0b111; // Pull-Up for /RESET; High for Sync+Data |
42 | PORTB = 0b01000000; // Pull-Up for Jumper |
| 41 | PORTD = 0b0011111; // Pull-Up for Switches |
43 | PORTD = 0b0011111; // Pull-Up for Switches |
| 42 | 44 | ||
| - | 45 | while(1) // Main-Loop (Sending data all the time) |
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| - | 46 | { |
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| 43 | while(1) // Main-Loop (Sending data all the time) |
47 | if (!(PINB & (1<<PINB6))) // By-Pass Mode |
| Line -... | Line 48... | ||
| - | 48 | { |
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| - | 49 | if (PIND & (1<<PIND0)) PORTA |= 1 << PORTA1; // A1=D0 |
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| - | 50 | else PORTA &= ~(1 << PORTA1); |
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| 44 | { |
51 | |
| 45 | Parity = 0; // Reset Parity Bit |
52 | if (PIND & (1<<PIND1)) PORTA |= 1 << PORTA0; // A0=D1 |
| 46 | Send(1,0); // Send SYNC Pulse |
53 | else PORTA &= ~(1 << PORTA0); |
| 47 | - | ||
| 48 | for (i=0;i<5;i++) // Encode the first five Port Pins |
54 | } |
| - | 55 | else // Normal Mode |
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| 49 | { |
56 | { |
| 50 | if (PIND & (1<<i)) // Check Pin #i |
- | |
| 51 | { |
- | |
| 52 | Send(0,0); // When High, Send Low (Switched to "0") |
57 | Parity = 0; // Reset Parity Bit |
| - | 58 | Send(1,0); // Send SYNC Pulse |
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| - | 59 | ||
| - | 60 | for (i=0;i<5;i++) // Encode the first five Port Pins |
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| - | 61 | { |
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| - | 62 | if (PIND & (1<<i)) // Check Pin #i |
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| - | 63 | { |
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| - | 64 | Send(0,0); // When High, Send Low (Switched to "0") |
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| 53 | Parity = ~Parity; // and invert Parity Bit |
65 | Parity = ~Parity; // and invert Parity Bit |
| - | 66 | } |
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| 54 | } |
67 | else |
| 55 | else |
- | |
| Line 56... | Line 68... | ||
| 56 | { |
68 | { |
| - | 69 | Send(0,1); // When Low, Send High (Switched to "1") |
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| 57 | Send(0,1); // When Low, Send High (Switched to "1") |
70 | } |
| Line 58... | Line 71... | ||
| 58 | } |
71 | } |