STM32F103 Timer 3

[Jan (Gast)]

Hallo,

ich versuche mit Timer 3 und Timer 1 PWM Signale zu erzeugen. Mit Timer 
1 funktioniert es wie ich mir geadacht habe. Leider kommt bei Timer 3 
nur Unsinn raus. Pins habe ich den Code geschrieben. Sieht jemand den 
Fehler?
Ich teste die Ausgänge mit PulsView.

Dank und Gruß
Jan

main.c

TIM_SetCompare1 (TIM1, 200);  // DISPLAY 1
TIM_SetCompare2 (TIM1, 400);  // DISPLAY 2
TIM_SetCompare3 (TIM1, 500);  // CHARGE PUMP

TIM_SetCompare1 (TIM3, 499);  // Test1
TIM_SetCompare2 (TIM3, 499);  // Test2

pwm.c

#define PWMPINCHARGEPUMP GPIO_Pin_15  //TIM1_CH3N
#define PWMPINDISPLAY100 GPIO_Pin_14   //TIM1_CH2N
#define PWMPINDISPLAY120 GPIO_Pin_13   //TIM1_CH1N

#define PWMTIM1RCC    RCC_APB2Periph_GPIOB
#define PWMTIM1PORT    GPIOB

void PwmTim1Init()
{
  GPIO_InitTypeDef GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;
  TIM_OCInitTypeDef TIM_OC_InitStructure;


  RCC_APB2PeriphClockCmd(PWMTIM1RCC | RCC_APB2Periph_AFIO | RCC_APB2Periph_TIM1, ENABLE);


  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_InitStructure.GPIO_Pin = PWMPINCHARGEPUMP | PWMPINDISPLAY100 | PWMPINDISPLAY120;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(PWMTIM1PORT, &GPIO_InitStructure);


  TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBase_InitStructure.TIM_Period = 999;
  TIM_TimeBase_InitStructure.TIM_Prescaler = 0;
  TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);

  TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
  TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
  TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
  //TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
  //TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
  TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Disable;
  TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
  TIM_OC_InitStructure.TIM_Pulse = 100;
  TIM_OC1Init(TIM1, &TIM_OC_InitStructure);
  TIM_OC2Init(TIM1, &TIM_OC_InitStructure);
  TIM_OC3Init(TIM1, &TIM_OC_InitStructure);
  //TIM_OC4Init(TIM1, &TIM_OC_InitStructure);

  TIM_Cmd(TIM1, ENABLE);
  TIM_CtrlPWMOutputs(TIM1, ENABLE);


}

#define PWMSPK1     GPIO_Pin_6  //TIM3_CH1
#define PWMSPK2     GPIO_Pin_7   //TIM3_CH2


#define PWMTIM3RCC    RCC_APB2Periph_GPIOA
#define PWMTIM3PORT    GPIOA




void PwmTim3Init()
{
  GPIO_InitTypeDef GPIO_InitStructure;
  TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;
  TIM_OCInitTypeDef TIM_OC_InitStructure;

  RCC_APB2PeriphClockCmd(PWMTIM3RCC | RCC_APB2Periph_AFIO, ENABLE);

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

  //RCC_APB2PeriphClockCmd(0xFFFF, ENABLE);

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Pin = PWMSPK1 | PWMSPK2;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(PWMTIM3PORT, &GPIO_InitStructure);


  TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBase_InitStructure.TIM_Period = 999;
  TIM_TimeBase_InitStructure.TIM_Prescaler = 0;
  TIM_TimeBaseInit(TIM1, &TIM_TimeBase_InitStructure);

  TIM_OC_InitStructure.TIM_OCMode = TIM_OCMode_PWM1;
  TIM_OC_InitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
  TIM_OC_InitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Set;
  TIM_OC_InitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
  TIM_OC_InitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OC_InitStructure.TIM_OutputState = TIM_OutputState_Enable;
TIM_OC_InitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
  TIM_OC_InitStructure.TIM_Pulse = 100;
  TIM_OC1Init(TIM3, &TIM_OC_InitStructure);
  TIM_OC2Init(TIM3, &TIM_OC_InitStructure);

  TIM_Cmd(TIM3, ENABLE);
  TIM_CtrlPWMOutputs(TIM3, ENABLE);

}

[Jan (Gast)]

Sorry Bilder vergessen

[Jan (Gast)]

Keiner eine Idee?
Kann ich noch was testen ?

[Volkvorg (Gast)]

Auf die Schnelle in deiner Timer3 Init Funktion
Hast du bei der TimeBaseInit() TIM1 und nicht TIM3 stehen.

[Jan (Gast)]

Vielen Dank... Asche auf mein Haupt.