1 | //SPI Device Id aus XParameter.h
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2 | #define SPI_DEVICE_ID XPAR_SPI_0_DEVICE_ID
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3 |
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4 |
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5 | #define BUFFER_SIZE 12 //Buffergröße
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6 | #define DAC_Anzahl 2000000 //Anzahl Lese/Schreib Vorgänge
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7 |
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8 |
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9 | typedef u8 DataBuffer[BUFFER_SIZE]; //Bufferdefenition
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10 |
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11 |
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12 | //SPI
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13 | static XSpi DAC_SPI; /* The instance of the SPI device */
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14 |
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15 |
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16 | //Lese/Schreib-Buffer
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17 | u8 ReadBuffer[BUFFER_SIZE];
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18 | u8 WriteBuffer[BUFFER_SIZE];
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19 |
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20 |
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21 | //SPI Test
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22 | int DAC_SPI_test(void)
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23 | {
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24 | int Status;
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25 | u32 Count;
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26 | u32 Count1;
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27 | u32 Count2;
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28 | u32 Delay;
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29 |
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30 | XStatus status = XST_SUCCESS;
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31 | status = XSpi_Initialize(&DAC_SPI, SPI_DEVICE_ID);
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32 |
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33 | switch(status)
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34 | {
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35 | case XST_SUCCESS: print("Status: Erfolgreich initialisiert\n\r"); break;
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36 | case XST_DEVICE_IS_STARTED: print("Status: Device is started\n\r"); break;
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37 | case XST_DEVICE_NOT_FOUND: print("Status: Device not found\n\r"); break;
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38 | }
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39 |
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40 | Xuint32 options = XSP_MASTER_OPTION;
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41 | status = XSpi_SetOptions(&DAC_SPI, options);
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42 |
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43 | switch(status)
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44 | {
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45 | case XST_SUCCESS: print("Status: Erfolgreich option gesetzt\n\r"); break;
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46 | case XST_DEVICE_BUSY: print("Status: Device busy\n\r"); break;
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47 | case XST_SPI_SLAVE_ONLY: print("Status: Slave only\n\r"); break;
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48 | }
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49 |
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50 | XSpi_SetSlaveSelect(&DAC_SPI, 1);
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51 | XSpi_Start(&DAC_SPI);
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52 |
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53 |
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54 | //Interrupts disable
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55 | XSpi_IntrGlobalDisable(&DAC_SPI);
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56 |
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57 | //Anzahl der Datenübertragung
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58 | for(Count=0;Count<DAC_Anzahl;Count++){
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59 |
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60 | //Ausgaberegister beschreiben
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61 | WriteBuffer[0] = 1; //Single Ended=1, diff. Ended=0 S/D
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62 | WriteBuffer[1] = 0; //ODD = 1 , SIGN = 0 O/S
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63 | WriteBuffer[2] = 0; //Adress selecet bit1 S1
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64 | WriteBuffer[3] = 0; //Adress selecet bit0 S0
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65 | WriteBuffer[4] = 1; //Unipolar=1, Bipolar=0
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66 | WriteBuffer[5] = 0; //SleepMode=1, NapMode=0
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67 |
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68 |
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69 | /*
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70 | * O/S=0
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71 | * S1=0
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72 | * S0=0
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73 | * => CH0 selected => TUNE_INDICATOR //Signal an Channel 0
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74 | */
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75 |
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76 |
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77 | //Daten Übertragen
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78 | Status=XSpi_Transfer(&DAC_SPI, WriteBuffer, ReadBuffer, BUFFER_SIZE);
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79 | switch(Status)
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80 | {
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81 | case XST_SUCCESS: print("Status: Erfolgreich gesendet.\n\r"); break;
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82 | case XST_DEVICE_IS_STOPPED: print("Status: Device stopped\n\r"); break;
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83 | case XST_DEVICE_BUSY: print("Status: Device busy\n\r"); break;
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84 | case XST_SPI_NO_SLAVE: print("Status: Device no slave\n\r"); break;
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85 | }
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86 |
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87 |
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88 | //Recive Daten Ausgeben
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89 | for (Count1 = 0; Count1 < BUFFER_SIZE; Count1++) {
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90 | xil_printf("ADC Wert %x: %d\n\r",Count1,ReadBuffer[Count1]);
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91 | }
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92 | for (Delay = 0; Delay < 500; Delay++);
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93 | }
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94 |
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95 | return XST_SUCCESS;
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96 | }
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