1 | TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
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2 | TIM_OCInitTypeDef TIM_OCInitStructure;
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3 | GPIO_InitTypeDef GPIO_InitStructure;
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4 | I2C_InitTypeDef I2C_InitStruct;
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5 | NVIC_InitTypeDef NVIC_InitStructure;
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6 |
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7 | void TIM_Config(void);
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8 |
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9 | int main(void) {
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10 | TIM_Config();
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11 |
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12 |
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13 | while (1) {
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14 | /*
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15 | if (TIM_GetFlagStatus(TIM3, TIM_FLAG_Update) != RESET) { // (SR-UIE Bit) toggle auf ARR-Wert funktioniert
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16 | TIM_ClearFlag(TIM3, TIM_IT_Update);
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17 | GPIO_ToggleBits(GPIOC, GPIO_Pin_6);
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18 | }
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19 | */
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20 | if (TIM_GetFlagStatus(TIM3, TIM_FLAG_CC1) != RESET) { // SR-CC1IF Bit ??
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21 | TIM_ClearFlag(TIM3, TIM_FLAG_CC1);
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22 | GPIO_ToggleBits(GPIOC, GPIO_Pin_6);
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23 | }
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24 | }
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25 | }
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26 |
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27 | void TIM_Config() {
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28 | /************************* GPIO-TIM Configuration ***************************/
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29 | // clocks enable
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30 | RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); // TIM3
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31 | RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); // GPIOC
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32 |
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33 | // GPIOC Configuration: TIM3 CH1 (PC6)
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34 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
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35 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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36 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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37 | GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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38 | GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
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39 | GPIO_Init(GPIOC, &GPIO_InitStructure);
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40 |
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41 | /********************************** TIM *************************************/
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42 | // Timer basic configuration
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43 | TIM_TimeBaseStructure.TIM_Prescaler = 3;
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44 | TIM_TimeBaseStructure.TIM_Period =0xFFFF; // ARR Value
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45 | TIM_TimeBaseStructure.TIM_ClockDivision = 0;
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46 | TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
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47 |
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48 | TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
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49 |
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50 | // Output Compare
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51 | TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Active;
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52 | TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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53 | TIM_OCInitStructure.TIM_Pulse = 20999; //CCR1 Value
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54 | TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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55 |
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56 | TIM_OC1Init(TIM3, &TIM_OCInitStructure); // Channel1
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57 |
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58 | TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Disable);
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59 |
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60 | // TIM enable counter
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61 | TIM_Cmd(TIM3, ENABLE);
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62 |
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63 | }
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