1 | #include <msp430.h> //einbinden der MSP430 Programmbibiothek
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2 |
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3 | #define RXD BIT1
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4 | #define TXD BIT2
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5 |
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6 | unsigned int samples[3]; //Array für ADC Speicherung
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7 | const char string[] = { "Halololo\r\n" };
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8 | unsigned int i; //Counter
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9 |
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10 | int main(void)
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11 | {
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12 | /**************ADC10 Settings**********************/
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13 | ADC10CTL0 = SREF_0 + ADC10SHT_2 + REF2_5V + REFON + MSC + ADC10ON;
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14 | ADC10CTL1 = INCH_5 + ADC10DIV_0 + CONSEQ_3 + SHS_0; //Multi-channel repeated conversion starting from channel 3
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15 | ADC10AE0 = BIT5 + BIT4 + BIT3; //Kanal A5 (BIT5), A4 (Bit4) und A3 (BIT3) aktivieren
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16 | ADC10DTC1 = 3; // Alle drei Kanäle bei einer Einlesung übertragen
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17 |
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18 | /**************DO Settings**********************/
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19 | //P1DIR |= 0x08;
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20 | //P1DIR |= 0x10; // P1.3, P1.4, P1.5 als DO
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21 | //P1DIR |= 0x20;
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22 | P2DIR |= 0xFF; // All P2.x outputs
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23 | P2OUT &= 0x00; // All P2.x reset
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24 |
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25 | /**************Clock Settings**********************/
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26 | WDTCTL = WDTPW + WDTHOLD; // Watchdog deaktivieren
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27 | DCOCTL = 0;
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28 | BCSCTL1 = CALBC1_1MHZ; // Setze Taktfrequenz der System Clock auf 1MHz
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29 | DCOCTL = CALDCO_1MHZ; // Digitally Controlled Oscilator auf 1MHz einstellen
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30 |
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31 | /***************Timer_A Settings******************/
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32 | CCTL0 = CCIE; // Aufruf der Interruptfunktion ermöglichen
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33 | CCR0 = 1000; // Gehe in den Interrupt nach 100 Durchläufen (bei 1MHz jede 0,1ms)
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34 | TACTL = TASSEL_2 + MC_1; // TASSEL_2: Wähle ACLK (Auxiliary clock) als Quellclock
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35 | // MC_1: Der Timer zählt bis zum Wert von CCR0
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36 | _BIS_SR(LPM0_bits + GIE); // Interrupteintritt ermöglichen
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37 |
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38 | /*************Serielle Übertragung Setup*************/
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39 | P1SEL |= RXD + TXD ; // P1.1 = RXD, P1.2=TXD
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40 | P1SEL2 |= RXD + TXD ; // P1.1 = RXD, P1.2=TXD
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41 | UCA0CTL1 |= UCSSEL_2; // SMCLK
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42 | UCA0BR0 = 0x08; // 1MHz 115200
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43 | UCA0BR1 = 0x00; // 1MHz 115200
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44 | UCA0MCTL = UCBRS2 + UCBRS0; // Modulation UCBRSx = 5
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45 | UCA0CTL1 &= ~UCSWRST; // **Initialize USCI state machine**
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46 | __bis_SR_register(CPUOFF + GIE); // Enter LPM0 w/ int until Byte RXed
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47 | }
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48 |
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49 | // Timer A0 interrupt service routine
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50 | #pragma vector=TIMER0_A0_VECTOR
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51 | __interrupt void Timer_A (void)
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52 | {
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53 | ADC10CTL0 &= ~ENC;
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54 | while (ADC10CTL1 & BUSY);
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55 | ADC10SA = (unsigned int)samples;
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56 | //automatische Speicherung der Daten in das Array "sample"
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57 |
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58 | ADC10CTL0 |= ENC + ADC10SC; // Sampling and conversion start
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59 |
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60 | if (samples[0] > 0x384)
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61 | {
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62 | P1OUT |= 0x08; //LED an Pin 1.4 einschalten
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63 |
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64 | }
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65 | else
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66 | {
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67 | P1OUT &= ~0x08;
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68 | }
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69 |
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70 | if (samples[1] > 0x384)
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71 | {
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72 | P1OUT |= 0x10; //LED an Pin 1.4 einschalten
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73 | }
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74 | else
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75 | {
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76 | P1OUT &= ~0x10;
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77 | }
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78 |
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79 | if (samples[2] > 0x384)
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80 | {
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81 | P1OUT |= 0x20; //LED an Pin 1.4 einschalten
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82 | }
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83 | else
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84 | {
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85 | P1OUT &= ~0x20;
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86 | }
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87 |
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88 | i=0;
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89 | UC0IE |= UCA0TXIE; // Enable USCI_A0 TX interrupt
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90 |
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91 | }
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92 |
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93 | #pragma vector=USCIAB0TX_VECTOR
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94 | __interrupt void USCI0TX_ISR(void)
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95 | {
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96 | // TX next character
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97 | UCA0TXBUF = string[i++]; // TX next character
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98 | if (i == sizeof string - 1) // TX over?
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99 | UC0IE &= ~UCA0TXIE; // Disable USCI_A0 TX interrupt
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100 | }
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