1 | GPIO KONFIGURIEREN:
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2 |
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3 | void BUSPins_Init( void )
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4 | {
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5 | GPIO_InitTypeDef GPIO_InitStructureRX;
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6 | GPIO_InitTypeDef GPIO_InitStructureTX;
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7 |
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8 | /* Enable the GPIO clock for the RX/TX Pins*/
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9 | RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB, ENABLE );
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10 | RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOC, ENABLE );
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11 |
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12 | /* Configure the GPIO Pins for Transmitting/Receiving */
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13 | GPIO_InitStructureTX.GPIO_Pin = GPIO_Pin_13;
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14 | GPIO_InitStructureRX.GPIO_Pin = GPIO_Pin_11;
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15 |
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16 | /* Set the operation mode */
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17 | GPIO_InitStructureTX.GPIO_Mode = GPIO_Mode_Out_OD;
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18 | GPIO_InitStructureRX.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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19 |
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20 | GPIO_InitStructureTX.GPIO_Speed = GPIO_Speed_50MHz;
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21 | GPIO_InitStructureRX.GPIO_Speed = GPIO_Speed_50MHz;
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22 |
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23 | GPIO_Init( GPIOB, &GPIO_InitStructureTX );
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24 | GPIO_Init( GPIOC, &GPIO_InitStructureRX );
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25 |
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26 | }
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27 |
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28 | ------------------------------------------------------------------------------------------------------
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29 |
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30 | EXTI KONFIGURIEREN:
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31 |
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32 |
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33 | GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource11);
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34 | // Configure EXTI Line15 to generate an interrupt on falling edge
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35 | EXTI_InitStructure.EXTI_Line = EXTI_Line11;
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36 | EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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37 | EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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38 | EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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39 | EXTI_Init(&EXTI_InitStructure);
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40 |
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41 | --------------------------------------------------------------------------------------------------------
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42 |
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43 | NTVI KONFIGURIEREN (WAR SCHON DABEI):
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44 |
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45 |
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46 | NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQChannel;
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47 | NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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48 | NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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49 | NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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50 | NVIC_Init(&NVIC_InitStructure);
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51 |
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52 | --------------------------------------------------------------------------------------------------------
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53 |
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54 | IRQHANDLER:
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55 |
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56 |
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57 | void EXTI15_10_IRQHandler(void)
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58 | {
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59 |
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60 |
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61 | if(EXTI_GetITStatus(EXTI_Line11) != RESET)
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62 | {
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63 | GPIO_WriteBit(GPIOE, GPIO_Pin_0, (BitAction)((1-GPIO_ReadOutputDataBit(GPIOE, GPIO_Pin_0))));
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64 |
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65 |
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66 | EXTI_ClearITPendingBit(EXTI_Line11);
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67 | }
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68 |
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69 | }
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70 |
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71 | -----------------------------------------------------------------------------------------------------
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72 |
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73 | TASK WELCHER 13 einmal auf 1 und einmal auf 0 setzt:
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74 |
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75 | void prvSendTask ( void *params )
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76 | {
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77 | for(;;) {
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78 | GPIO_SetBits( GPIOB, GPIO_Pin_13 );
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79 | vTaskDelay(1000);
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80 | GPIO_ResetBits( GPIOB, GPIO_Pin_13 );
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81 | vTaskDelay(1000);
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82 | }
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83 | }
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