| /Spektrum-Expander/DX8-Modulator/Hex-Files/sexpander.hex |
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| 0,0 → 1,20 |
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| /Spektrum-Expander/DX8-Modulator/sexpander.aps |
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| /Spektrum-Expander/DX8-Modulator/sexpander.aws |
|---|
| 0,0 → 1,0 |
| <AVRWorkspace><IOSettings><CurrentRegisters/></IOSettings><part name="ATTINY13A"/><Files><File00000 Name="d:\Pendsa\DX8-Modulator\sexpander.c" Position="268 96 1464 580" LineCol="84 58"/></Files></AVRWorkspace> |
| /Spektrum-Expander/DX8-Modulator/sexpander.c |
|---|
| 0,0 → 1,98 |
| // ******************************************************** |
| // ** Spektrum DX8 Expander for 12 Channels at large ** |
| // ******************************************************** |
| // ** Target: Atmel ATtiny2313 with delivered standard ** |
| // ** Fuses (internal RC-Oscillator @ 1 MHz) ** |
| // ******************************************************** |
| // ** It sends data from 4 additionally switches over ** |
| // ** the tripole "FLAP" channel which the FlightControl ** |
| // ** can decode "on the fly" :) ** |
| // ******************************************************** |
| // ** (c) 2009-0xFFFF Stefan Pendsa ** |
| // ** License: don't know - use it and have fun ** |
| // ******************************************************** |
| #include <avr/io.h> |
| #include <util/delay.h> |
| #define TX_High PORTA |= 1 << PORTA0 // Set TX-Pin High |
| #define TX_Low PORTA &= ~(1 << PORTA0) // Set TX-Pin Low |
| #define SYNC_High PORTA |= 1 << PORTA1 // Set Sync-Pin High |
| #define SYNC_Low PORTA &= ~(1 << PORTA1) // Set Sync-Pin Low |
| void Send(char sync, char data) |
| { |
| unsigned char synced; |
| if (sync == 0) SYNC_High; else SYNC_Low; // Send Sync |
| if (data == 0) TX_High; else TX_Low; // Send Data |
| synced = 0; |
| while (synced == 0) |
| { |
| while ( PIND & (1<<PD5) ); // Wait for DX8-Sync goes low |
| while ( !(PIND & (1<<PD5)) ); // Wait for DX8-Sync goes high |
| _delay_us(4500); |
| if ((PIND & (1<<PD5))) synced = 1; // When its high (again) after 4,5ms, we are synced |
| } |
| } |
| int main(void) |
| { |
| char i,Parity; // Bit-Counter and Parity Bit |
| DDRA = 0b011; // PORT A INPUT: RESET; OUTPUT: Sync+Data |
| DDRB = 0b00000000; // PORT B INPUT: Jumper for Bypass |
| DDRD = 0b0000000; // PORT D INPUT: Switches + DX7-Sync |
| PORTA = 0b111; // Pull-Up for /RESET, High for Sync+Data |
| PORTB = 0b01000000; // Pull-Up for Jumper |
| PORTD = 0b1011111; // Pull-Up for Switches |
| while(1) // Main-Loop (Sending data all the time) |
| { |
| if (!(PINB & (1<<PINB6))) // By-Pass Mode |
| { |
| if (PIND & (1<<PIND0)) PORTA |= 1 << PORTA1; // A1=D0 |
| else PORTA &= ~(1 << PORTA1); |
| if (PIND & (1<<PIND1)) PORTA |= 1 << PORTA0; // A0=D1 |
| else PORTA &= ~(1 << PORTA0); |
| } |
| else // Normal Mode |
| { |
| Parity = 0; // Reset Parity Bit |
| Send(1,0); // Send SYNC Pulse |
| i=0; |
| while (i<7) // Encode PD0-PD4 + PD6 (F-MODE(2), ELEV(1), MIX, GEAR, ELEV(2)) |
| { |
| if (PIND & (1<<i)) // Check Pin #i |
| { |
| Send(0,0); // When High, Send Low (Switched to "0") |
| Parity = ~Parity; // and invert Parity Bit |
| } |
| else Send(0,1); // When Low, Send High (Switched to "1") |
| i++; |
| if (i == 5) i = 6; // Skip PD5 |
| } |
| for (i=0;i<2;i++) // Encode PB0+PB1 (AIL D/R (2)) |
| { |
| if ((PINB & (1<<i))) // Check Pin #i |
| { |
| Send(0,0); // When High, Send Low (Switched to "0") |
| Parity = ~Parity; // and invert Parity Bit |
| } |
| else Send(0,1); // When Low, Send High (Switched to "1") |
| } |
| Send(0,Parity); // Send Parity Bit |
| } |
| } |
| } |