PWM control with DMA and ADC

[esiqueira]

Posted on June 21, 2012 at 16:58The original post was too long to process during our migration. Please click on the attachment to read the original post.

[Tesla DeLorean]

Posted on June 21, 2012 at 17:23

Don't know about the general viability of this

But you'll need to fix the Channel# here  TIM_OC3Init(TIM4, &TIM_OCInitStructure);      // Initializes the TIM Channel 3 according to the parameters specified in the TIM_OCInitStruct

[esiqueira]

Posted on June 21, 2012 at 20:01

THANKS!!! clive1,,,

%%%%% BELOW THE SOLUTION%%%%%%%%

void TIM_Configuration(void)

{   /* Time base configuration */  TIM_TimeBaseStructure.TIM_Period = 0xFFF;  TIM_TimeBaseStructure.TIM_Prescaler = 3000;  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  TIM_TimeBaseStructure.TIM_RepetitionCounter = 1;  TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure);    /* PWM1 Mode configuration: Channel1 */  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;  TIM_OCInitStructure.TIM_Pulse = 50;  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;    TIM_OC3Init(TIM4, &TIM_OCInitStructure);    TIM_ARRPreloadConfig(TIM4, ENABLE);       // ''connecting'' DMA and TIM3     TIM_DMACmd(TIM4, TIM_DMA_Update, ENABLE);

 /* TIM3 enable counter */

 TIM_Cmd(TIM4, ENABLE);

     // turning on TIM3 and PWM outputs

    TIM_CtrlPWMOutputs(TIM4, ENABLE);        }