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1 | /*####################################################################################### |
1 | /*####################################################################################### |
2 | Decodieren eines RC Summen Signals oder Spektrum Empfänger-Satellit |
2 | Decodieren eines RC Summen Signals oder Spektrum Empfänger-Satellit |
3 | #######################################################################################*/ |
3 | #######################################################################################*/ |
Line 4... | Line 4... | ||
4 | 4 | ||
5 | #include "Spectrum.h" |
5 | #include "spectrum.h" |
Line 6... | Line -... | ||
6 | #include "main.h" |
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7 | - | ||
8 | //############################################################################ |
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9 | // zum Decodieren des Spektrum Satelliten wird USART1 benutzt. |
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10 | // USART1 initialisation from killagreg |
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11 | void Uart1Init(void) |
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12 | //############################################################################ |
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13 | { |
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14 | // -- Start of USART1 initialisation for Spekturm seriell-mode |
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15 | // USART1 Control and Status Register A, B, C and baud rate register |
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16 | uint16_t ubrr = (uint16_t) ((uint32_t) SYSCLK/(8 * 115200) - 1); |
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17 | // disable RX-Interrupt |
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18 | UCSR1B &= ~(1 << RXCIE1); |
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19 | // disable TX-Interrupt |
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20 | UCSR1B &= ~(1 << TXCIE1); |
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21 | // disable DRE-Interrupt |
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22 | UCSR1B &= ~(1 << UDRIE1); |
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23 | // set direction of RXD1 and TXD1 pins |
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24 | // set RXD1 (PD2) as an input pin |
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25 | PORTD |= (1 << PORTD2); |
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26 | DDRD &= ~(1 << DDD2); |
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27 | // USART0 Baud Rate Register |
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28 | // set clock divider |
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29 | UBRR1H = (uint8_t)(ubrr>>8); |
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30 | UBRR1L = (uint8_t)ubrr; |
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31 | // enable double speed operation |
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32 | UCSR1A |= (1 << U2X1); |
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33 | // enable receiver and transmitter |
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34 | //UCSR1B = (1<<RXEN1)|(1<<TXEN1); |
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35 | UCSR1B = (1<<RXEN1); |
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36 | // set asynchronous mode |
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37 | UCSR1C &= ~(1 << UMSEL11); |
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38 | UCSR1C &= ~(1 << UMSEL10); |
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39 | // no parity |
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40 | UCSR1C &= ~(1 << UPM11); |
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41 | UCSR1C &= ~(1 << UPM10); |
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42 | // 1 stop bit |
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43 | UCSR1C &= ~(1 << USBS1); |
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44 | // 8-bit |
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45 | UCSR1B &= ~(1 << UCSZ12); |
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46 | UCSR1C |= (1 << UCSZ11); |
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47 | UCSR1C |= (1 << UCSZ10); |
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48 | // flush receive buffer explicit |
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49 | while(UCSR1A & (1<<RXC1)) UDR1; |
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50 | // enable RX-interrupts at the end |
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51 | UCSR1B |= (1 << RXCIE1); |
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52 | // -- End of USART1 initialisation |
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Line 53... | Line 6... | ||
53 | return; |
6 | #include rc.h |
54 | } |
7 | |
55 | 8 | ||
56 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
9 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
Line 121... | Line 74... | ||
121 | // C3 to C0 is the channel number. 0 to 9 (4 bit, as assigned in the transmitter) |
74 | // C3 to C0 is the channel number. 0 to 9 (4 bit, as assigned in the transmitter) |
122 | // D9 to D0 is the channel data (10 bit) 0xaa..0x200..0x356 for 100% transmitter-travel |
75 | // D9 to D0 is the channel data (10 bit) 0xaa..0x200..0x356 for 100% transmitter-travel |
123 | // |
76 | // |
124 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
77 | // ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ |
Line 125... | Line -... | ||
125 | - | ||
126 | //############################################################################ |
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- | 78 | ||
127 | //Diese Routine startet und inizialisiert den USART1 für seriellen Spektrum satellite reciever |
79 | |
128 | SIGNAL(USART1_RX_vect) |
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- | 80 | void spectrum_parser(uint8_t c) |
|
129 | //############################################################################ |
81 | |
130 | { |
82 | { |
131 | static unsigned int Sync=0, FrameCnt=0, ByteHigh=0, ReSync=1, Frame2=0, FrameTimer; |
83 | static unsigned int Sync=0, FrameCnt=0, ByteHigh=0, ReSync=1, Frame2=0, FrameTimer; |
132 | unsigned int Channel, index; |
84 | unsigned int Channel, index; |
133 | signed int signal, tmp; |
85 | signed int signal, tmp; |
134 | int bCheckDelay; |
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135 | uint8_t c; |
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136 | - | ||
Line 137... | Line 86... | ||
137 | c = UDR1; // get data byte |
86 | int bCheckDelay; |
138 | 87 | ||
139 | if (ReSync == 1) |
88 | if (ReSync == 1) |
140 | { |
89 | { |