1 | void USART1_Configuration()
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2 | {
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3 | // PC-Verbindung an USART 1 - PA9/PA10
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4 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1 | RCC_APB2Periph_AFIO, ENABLE);
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5 |
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6 | GPIO_InitTypeDef GPIO_InitStructure;
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7 |
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8 | // Alle diese Ports werden nur langsam geschaltet
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9 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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10 |
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11 | // GPS IO an USART 1 - PA9/PA10
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12 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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13 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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14 | GPIO_Init(GPIOA, &GPIO_InitStructure);
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15 |
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16 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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17 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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18 | GPIO_Init(GPIOA, &GPIO_InitStructure);
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19 |
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20 | // Support für NMEA-Protokoll aus Datenblatt
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21 | USART_InitTypeDef USART_InitStructure;
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22 | USART_InitStructure.USART_BaudRate = 9600;
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23 | USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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24 | USART_InitStructure.USART_StopBits = USART_StopBits_1;
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25 | USART_InitStructure.USART_Parity = USART_Parity_No;
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26 | USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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27 | USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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28 |
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29 | USART_Init(USART1, &USART_InitStructure);
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30 | USART_Cmd(USART1, ENABLE);
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31 | }
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32 |
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33 | void GPS_USART_Configuration()
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34 | {
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35 | // Clocks Initialisieren
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36 | RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
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37 | RCC_APB1PeriphClockCmd( RCC_APB1Periph_USART2, ENABLE);
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38 |
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39 |
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40 | GPIO_InitTypeDef GPIO_InitStructure;
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41 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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42 |
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43 | // GPS IO an USART 2 - PA2/PA3
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44 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; // USART2 DI
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45 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
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46 | GPIO_Init(GPIOA, &GPIO_InitStructure);
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47 |
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48 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; // USART2 DO
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49 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
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50 | GPIO_Init(GPIOA, &GPIO_InitStructure);
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51 |
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52 | // Support für NMEA-Protokoll aus Datenblatt
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53 | USART_InitTypeDef USART_InitStructure;
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54 | USART_InitStructure.USART_BaudRate = 9600;
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55 | USART_InitStructure.USART_WordLength = USART_WordLength_8b;
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56 | USART_InitStructure.USART_StopBits = USART_StopBits_1;
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57 | USART_InitStructure.USART_Parity = USART_Parity_No;
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58 | USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
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59 | USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
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60 |
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61 | USART_Init(USART2, &USART_InitStructure);
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62 | USART_Cmd(USART2, ENABLE);
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63 |
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64 | // GPS Power Supply (GPS_EN) - PA12 als Open Drain Ausgang
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65 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
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66 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
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67 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
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68 | GPIO_Init(GPIOA, &GPIO_InitStructure);
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69 | }
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