how can i use DMA?

Posted on March 30, 2017 at 10:37

i have been stm32F303VDT chip

i use DAM with ADC3 ,4 with Trigger tim2 channel 3

Perfectly done

but I used timer2 so I must change trigger timer 3 .

so i changed timer 3 channel 4 but It is not executed.

The procedure is start DMA next timer Start

HAL_ADC_Start_DMA(&hadc3, (uint32_t*) ADC_I_Result, ADC_NUM);

HAL_ADC_Start_DMA(&hadc4, (uint32_t*) ADC_Q_Result, ADC_NUM);

HAL_TIM_PWM_Start (&htim3, TIM_CHANNEL_4);

why can i used it?

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