1 | //=========ECOS PIN IRQ DATA======================================================================================
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2 |
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3 | struct fs20pin_irqConfig_t
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4 | {
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5 | cyg_vector_t int_vector; // number of irq (eg 5 for SPI)
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6 | cyg_priority_t irq_priority; // AIC Priority Level
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7 | cyg_uint32 irq_mode; // AIC Interrupt Source Type
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8 | cyg_uint32 irq_initData; // additional irq data
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9 | cyg_uint32 irq_data; // passed data to the IRQ
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10 | };
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11 |
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12 | // Create and initialise the interrupt data:
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13 | static struct fs20pin_irqConfig_t fs20pin_irqConfig =
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14 | {
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15 | // regular SPI interrupt
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16 | AT91C_ID_PIOA, // int_vector
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17 | 7, // irq_priority
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18 | AT91C_AIC_PRIOR_LOWEST // irq_mode
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19 | };
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20 |
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21 | // Create a structures for eCos internal interrupt specific data:
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22 | static cyg_interrupt fs20pin_ecosIrq;
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23 | static cyg_handle_t irq_fs20pin_handle;
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24 |
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25 | cyg_uint32 at91_fs20pin_ISR( cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data);
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26 | void at91_fs20pin_DSR( cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data);
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27 |
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28 | //=========ECOS TC IRQ DATA=======================================================================================
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29 |
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30 | void Setup_Pin_Interrupt(void){
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31 |
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32 | AT91F_PIO_CfgInput( AT91C_BASE_PIOA, RX_PIN );
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33 | //AT91F_PIO_CfgPullup( AT91C_BASE_PIOA, RX_PIN );
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34 |
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35 | //SETUP interrupt
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36 | cyg_drv_interrupt_create( fs20pin_irqConfig.int_vector, // number of the interrupt (0-31)
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37 | fs20pin_irqConfig.irq_priority,
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38 | (cyg_addrword_t) &fs20pin_irqConfig, // data used by the ISR & DSR
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39 | at91_fs20pin_ISR,
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40 | at91_fs20pin_DSR,
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41 | &irq_fs20pin_handle, // irq handle
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42 | &fs20pin_ecosIrq); // ecos internal struct
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43 |
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44 | //Interrupt konfigurieren
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45 | //Interupt loest bei steigender Flanke am Pin aus, so kann mit dem Timer eine Periodendauer gemssen werden.
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46 | cyg_interrupt_configure(
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47 | fs20pin_irqConfig.int_vector, //Interrupt-Nummer
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48 | false, //reagiere auf Flanke, nicht Level
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49 | true); //reagiere auf steigend, nicht fallend
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50 |
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51 |
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52 | // Fill eCos interrupt vector tables
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53 | cyg_drv_interrupt_attach( irq_fs20pin_handle);
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54 | cyg_drv_interrupt_unmask( fs20pin_irqConfig.int_vector);
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55 |
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56 | AT91F_PIO_InterruptEnable ( AT91C_BASE_PIOA, RX_PIN );
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57 |
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58 |
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59 | }
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60 | cyg_uint32 at91_fs20pin_ISR( cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t data ){
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61 |
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62 | //aktuellen Interrupt sperren
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63 | cyg_interrupt_mask(fs20pin_irqConfig.int_vector);
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64 |
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65 | AT91F_PIO_InterruptDisable ( AT91C_BASE_PIOA, RX_PIN );
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66 |
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67 | //aktuellen Interrupt bestaetigen
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68 | cyg_interrupt_acknowledge(fs20pin_irqConfig.int_vector);
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69 |
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70 | if(AT91F_PIO_IsInputSet(AT91C_BASE_PIOA, RX_PIN)){
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71 |
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72 | xPrintf("Inputset\n");
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73 | AT91F_PIO_GetInterruptStatus(AT91C_BASE_PIOA); // Statusregister lesen => Clear Interrupt
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74 |
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75 | //xPrintf("Interuptabfrage %d\n",AT91F_PIO_IsInterruptSet( AT91C_BASE_PIOA, RX_PIN ));
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76 | }
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77 | else {
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78 | xPrintf("Input not set\n");
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79 | cyg_interrupt_unmask(fs20pin_irqConfig.int_vector);
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80 | return (CYG_ISR_HANDLED);
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81 | }
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82 |
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83 | //AT91F_PIO_InterruptEnable ( AT91C_BASE_PIOA, RX_PIN );
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84 |
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85 |
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86 | cyg_drv_interrupt_unmask(AT91C_ID_PIOA);
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87 | return (CYG_ISR_HANDLED);
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88 | }
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