1 | GPIO_InitTypeDef GPIO_InitStructure;
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2 |
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3 | /* Clocks einschalten */
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4 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
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5 |
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6 | /* HC595_CTRL konfigurieren */
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7 | GPIO_StructInit(&GPIO_InitStructure);
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8 | GPIO_InitStructure.GPIO_Pin = HC595_DS | HC595_STCP | HC595_SHCP | HC595_MR;
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9 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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10 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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11 | GPIO_Init(HC595_CTRL, &GPIO_InitStructure);
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12 |
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13 | GPIO_ResetBits(HC595_CTRL,HC595_MR); // Master Reset = Shift Register loeschen
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14 | GPIO_SetBits(HC595_CTRL,HC595_MR);
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15 |
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16 | //GPIO_SetBits(HC595_PWM,HC595_OE); // Outputs = Z-State
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17 | GPIO_ResetBits(HC595_CTRL,HC595_STCP); // Storage Register = LOW
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18 | GPIO_ResetBits(HC595_CTRL,HC595_SHCP); // Shift Register = LOW
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19 |
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20 | /* Timer 1 aktivieren und remappen */
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21 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
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22 | GPIO_PinRemapConfig(GPIO_PartialRemap_TIM1,ENABLE);
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23 |
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24 | /* Der Timer clock'ed mit 36Mhz, einstellen auf 200Hz */
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25 | TIM_TimeBaseStructInit(&TimerBaseInitStructure);
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26 | TimerBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
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27 | TimerBaseInitStructure.TIM_Prescaler = tim_presc;
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28 | TimerBaseInitStructure.TIM_Period = DCValue;
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29 | TimerBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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30 | TIM_TimeBaseInit(TIM1, &TimerBaseInitStructure);
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31 |
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32 | /* Compare Register allgemeine Einstellungen */
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33 | TimerOCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
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34 | TimerOCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
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35 | TimerOCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
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36 |
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37 | /* Compare Register Channel 1 konfigurieren (Display) */
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38 | TimerOCInitStructure.TIM_Pulse = DCValue / 2;
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39 | TIM_OC1Init(TIM1, &TimerOCInitStructure);
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40 |
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41 | /* Compare Register Channel 2 konfigurieren (LEDs) */
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42 | TimerOCInitStructure.TIM_Pulse = DCValue / 2;
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43 | TIM_OC2Init(TIM1, &TimerOCInitStructure);
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44 |
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45 | /* Predload Register Kanal 1 und 2 einschalten */
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46 | TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
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47 | TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
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48 |
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49 | /* Compare Register INT de-aktivieren */
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50 | TIM_ITConfig(TIM1,TIM_IT_CC1,DISABLE);
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51 | TIM_ITConfig(TIM1,TIM_IT_CC2,DISABLE);
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52 |
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53 | /* Timer 1 Main Outputs aktivieren und los */
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54 | TIM_ARRPreloadConfig(TIM1, ENABLE); /* PreLoad Register aktivieren */
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55 | TIM_CtrlPWMOutputs(TIM1, ENABLE); /* PWM Ausgänge aktivieren */
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56 | TIM_Cmd(TIM1, ENABLE); /* Timer 1 los ! */
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57 | }
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