PWM Funktioniert nicht

STM Neuling Gast #4645388
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Hallo, ich sitze seit heute morgen daran eine PWM ans Laufen zu kriegen. 
Langsam bin ich so durch, dass ich meine Fehler anscheinend nicht mehr 
entdecke...Könnte mal einer drüberschauen? Vielleicht ist es was ganz 
banales aber ich komme nicht drauf.

Ziel ist es, PWM mit 0-100%, 10% Startwert.

Ich verwende einen Cortex M030 48Pin, Als PWM Ausgang habe ich den 
PortAPin9(Tim1,Ch2) verwendet.

1
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

2
    TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;

3
    TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

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    TIM_TimeBase_InitStructure.TIM_Period = 100;

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    TIM_TimeBase_InitStructure.TIM_Prescaler = 200;

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    TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);

7


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    TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM1;

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    TIM_OCInitStruct.TIM_OCIdleState = TIM_OCIdleState_Reset;

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    TIM_OCInitStruct.TIM_OCNIdleState = TIM_OCNIdleState_Set;

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    TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;

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    TIM_OCInitStruct.TIM_OCNPolarity = TIM_OCNPolarity_High;

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    TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;

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    TIM_OCInitStruct.TIM_OutputNState = TIM_OutputNState_Disable;

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    TIM_OCInitStruct.TIM_Pulse = 10;

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    TIM_OC2Init(TIM1, &TIM_OCInitStruct);

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    TIM_Cmd(TIM1, ENABLE);
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STM Neuling Gast #4645434
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Hallo, ich denke mal ja  :-)

Sorry, den Code hatte ich vergessen

[c]
  InitGpio.GPIO_Pin = (GPIO_Pin_9);
  /*
  //     *   Pin 9  -  PWM Motor            -  A
  */
  InitGpio.GPIO_Mode = GPIO_Mode_AF;
  InitGpio.GPIO_Speed = GPIO_Speed_Level_3;
  InitGpio.GPIO_OType = GPIO_OType_PP;
  InitGpio.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOA, &InitGpio);
  GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_2);[\n]


und
[c]  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);[\c]
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Ingo L. #4645451
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Versuch das mal, musste aber noch anpassen:
1
void Init_PWM ( void )

2
{

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  GPIO_InitTypeDef GPIO_InitStructure_A, GPIO_InitStructure_B;

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  GPIO_StructInit(&GPIO_InitStructure_A);

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  GPIO_StructInit(&GPIO_InitStructure_B);

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  // IOs als Ausgang initialisieren (PortA und PortB)

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  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

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  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);

10


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  GPIO_InitStructure_A.GPIO_Mode = GPIO_Mode_AF;

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  GPIO_InitStructure_A.GPIO_Pin = GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 ;

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  GPIO_InitStructure_A.GPIO_OType = GPIO_OType_PP;

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  GPIO_InitStructure_A.GPIO_PuPd =  GPIO_PuPd_DOWN;

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  GPIO_InitStructure_A.GPIO_Speed = GPIO_Speed_100MHz;

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  GPIO_Init(GPIOA, &GPIO_InitStructure_A);

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  /////////////////////////////////////////////////////////

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  GPIO_InitStructure_B.GPIO_Mode = GPIO_Mode_AF;

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  GPIO_InitStructure_B.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;

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  GPIO_InitStructure_B.GPIO_OType = GPIO_OType_PP;

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  GPIO_InitStructure_B.GPIO_PuPd =  GPIO_PuPd_DOWN;

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  GPIO_InitStructure_B.GPIO_Speed = GPIO_Speed_100MHz;

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  GPIO_Init(GPIOB, &GPIO_InitStructure_B);

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  GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_TIM1);

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  GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_TIM1);

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  GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_TIM1);

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  GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_TIM1);

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  GPIO_PinAFConfig(GPIOB, GPIO_PinSource0, GPIO_AF_TIM1);

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  GPIO_PinAFConfig(GPIOB, GPIO_PinSource1, GPIO_AF_TIM1);

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  /////////////////////////////////////////////////////////

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  /////////////////////////////////////////////////////////

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  // Timer

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  TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;

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  TIM_TimeBaseStructInit(&TIM_TimeBase_InitStructure);

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  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);

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  TIM_TimeBase_InitStructure.TIM_Prescaler = PRESCALER_8KHZ;

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  TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;

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  TIM_TimeBase_InitStructure.TIM_Period = PWM_PERIOD;

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  TIM_TimeBase_InitStructure.TIM_ClockDivision = 0;

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  TIM_TimeBase_InitStructure.TIM_RepetitionCounter = 0;

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  TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);

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  TIM_UpdateRequestConfig(TIM1, TIM_UpdateSource_Global);

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  TIM_UpdateDisableConfig(TIM1,DISABLE);

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50


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  /////////////////////////////////////////////////////////

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  /////////////////////////////////////////////////////////

53


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  // PWM

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  TIM_OCInitTypeDef TIM_OCInitStructure;

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  TIM_OCStructInit(&TIM_OCInitStructure);

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  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;

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  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;

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  TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;

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  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

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  TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;

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  TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;

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  TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

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  TIM_OCInitStructure.TIM_Pulse = 0;

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  TIM_OC1Init(TIM1, &TIM_OCInitStructure);

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  TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);

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  TIM_OCInitStructure.TIM_Pulse = 0;

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  TIM_OC2Init(TIM1, &TIM_OCInitStructure);

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  TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);

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  TIM_OCInitStructure.TIM_Pulse = 0;

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  TIM_OC3Init(TIM1, &TIM_OCInitStructure);

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  TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable);

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  TIM_ARRPreloadConfig(TIM1, ENABLE);

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  TIM_CtrlPWMOutputs(TIM1, ENABLE);

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  /////////////////////////////////////////////////////////

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  /////////////////////////////////////////////////////////

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  // Dead-Time

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  TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

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  TIM_BDTRStructInit(&TIM_BDTRInitStructure);

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  /* Automatic Output enable, Break, dead time and lock configuration*/

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  TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;

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  TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSIState_Enable;

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  TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_OFF;

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  TIM_BDTRInitStructure.TIM_DeadTime = 223;

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  TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;

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  TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;

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  TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;

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  TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);

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  /* Enable Timer */

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  TIM_Cmd( TIM1, ENABLE );

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  DISABLE_PWM();

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  // Set Duty

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  TIM_SetCompare1(TIM1,PWM_PERIOD/2);

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  TIM_SetCompare2(TIM1,PWM_PERIOD/2);

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  TIM_SetCompare3(TIM1,PWM_PERIOD/2);

104
}
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Dominik B. #4645463
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"As the preload registers are transferred to the shadow registers only 
when an update event occurs, before starting the counter, you have to 
initialize all the registers by setting the UG
bit in the TIMx_EGR register."

1
TIM1->EGR |= (1 << TIM_EGR_UG);


Könnte ein Grund sein. Denke mal, das ist beim M030 ähnlich
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