对GD32F450的ADC同步模式的理解

    /* configure the ADC sync mode */

    adc_sync_mode_config(ADC_ALL_REGULAL_PARALLEL);

    adc_sync_dma_config(ADC_SYNC_DMA_MODE0);

    adc_sync_dma_request_after_last_enable();// notations of this func are fault

        

    /* ADC SCAN function enable */

    adc_special_function_config(ADC0,ADC_SCAN_MODE,ENABLE);

    adc_special_function_config(ADC1,ADC_SCAN_MODE,ENABLE);

    adc_special_function_config(ADC2,ADC_SCAN_MODE,ENABLE);

        

          /* ADC data alignment config */

    adc_data_alignment_config(ADC0,ADC_DATAALIGN_RIGHT);

    adc_data_alignment_config(ADC1,ADC_DATAALIGN_RIGHT);

    adc_data_alignment_config(ADC2,ADC_DATAALIGN_RIGHT);

    

    /* ADC channel length config */

    adc_channel_length_config(ADC0,ADC_REGULAR_CHANNEL,ADC_CHANNEL_LENGTH);

    adc_channel_length_config(ADC1,ADC_REGULAR_CHANNEL,ADC_CHANNEL_LENGTH);

    adc_channel_length_config(ADC2,ADC_REGULAR_CHANNEL,ADC_CHANNEL_LENGTH);

        

    /* ADC regular channel config */

    adc_regular_channel_config(ADC0,0,ADC_CHANNEL_8, ADC_SAMPLETIME_15);//[AI9 ]PB0(ADC01_IN8)

    adc_regular_channel_config(ADC1,0,ADC_CHANNEL_10,ADC_SAMPLETIME_15);//[AI11]PC0(ADC012_IN10)

    adc_regular_channel_config(ADC2,0,ADC_CHANNEL_12,ADC_SAMPLETIME_15);//[AI13]PC2(ADC012_IN12)



        adc_regular_channel_config(ADC0,1,ADC_CHANNEL_9, ADC_SAMPLETIME_15);//[AI10]PB1(ADC01_IN9)

        adc_regular_channel_config(ADC1,1,ADC_CHANNEL_11,ADC_SAMPLETIME_15);//[AI12]PC1(ADC012_IN11)

        adc_regular_channel_config(ADC2,1,ADC_CHANNEL_5, ADC_SAMPLETIME_15);//[PTIN5]PF7(ADC2_IN5)

                

        adc_regular_channel_config(ADC0,2,ADC_CHANNEL_0, ADC_SAMPLETIME_15);//[AI1]PA0(ADC012_IN0)

        adc_regular_channel_config(ADC1,2,ADC_CHANNEL_1, ADC_SAMPLETIME_15);//[AI2]PA1(ADC012_IN1)

        adc_regular_channel_config(ADC2,2,ADC_CHANNEL_9, ADC_SAMPLETIME_15);//[PTIN1]PF3(ADC2_IN9)                

        //sample sequence:B0/C0/C2->B1/C1/F7->PA0/PA1/PF3



    /* ADC external trigger enable */

    adc_external_trigger_config(ADC0,ADC_REGULAR_CHANNEL,EXTERNAL_TRIGGER_RISING);

    adc_external_trigger_config(ADC1,ADC_REGULAR_CHANNEL,EXTERNAL_TRIGGER_DISABLE);

    adc_external_trigger_config(ADC2,ADC_REGULAR_CHANNEL,EXTERNAL_TRIGGER_DISABLE);

    adc_external_trigger_source_config(ADC0,ADC_REGULAR_CHANNEL,ADC_EXTTRIG_REGULAR_T1_CH1);

    /* ADC_DMA_channel configuration */

    dma_single_data_parameter_struct dma_single_data_parameter;

    

    /* ADC_DMA_channel configuration */

    dma_deinit(DMA1,DMA_CH0);

    

    /* initialize DMA single data mode */

    dma_single_data_parameter.periph_addr = (uint32_t)(&ADC_SYNCDATA);

    dma_single_data_parameter.periph_inc = DMA_PERIPH_INCREASE_DISABLE;

    dma_single_data_parameter.memory0_addr = (uint32_t)(adc_value);

    dma_single_data_parameter.memory_inc = DMA_MEMORY_INCREASE_ENABLE;

    dma_single_data_parameter.periph_memory_width = DMA_PERIPH_WIDTH_16BIT;

    dma_single_data_parameter.circular_mode = DMA_CIRCULAR_MODE_ENABLE;

    dma_single_data_parameter.direction = DMA_PERIPH_TO_MEMORY;

    dma_single_data_parameter.number = ADC_MODULE_NUM*ADC_CHANNEL_LENGTH;

    dma_single_data_parameter.priority = DMA_PRIORITY_HIGH;

    dma_single_data_mode_init(DMA1,DMA_CH0,&dma_single_data_parameter);

    dma_channel_subperipheral_select(DMA1, DMA_CH0, DMA_SUBPERI0);

    /* enable DMA channel */

    dma_channel_enable(DMA1,DMA_CH0);

    timer_oc_parameter_struct timer_ocintpara;

    timer_parameter_struct timer_initpara;

        

    /* TIMER1 configuration */

    timer_initpara.prescaler         = 199;//200 MHz / (199 + 1) = 1 MHz

    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;

    timer_initpara.counterdirection  = TIMER_COUNTER_UP;

    timer_initpara.period            = 999;//period = 1 ms

    timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;

    timer_initpara.repetitioncounter = 0;

    timer_init(TIMER1,&timer_initpara);



    /* CH1 configuration in PWM mode0 */

    timer_ocintpara.ocpolarity  = TIMER_OC_POLARITY_HIGH;

    timer_ocintpara.outputstate = TIMER_CCX_ENABLE;

    timer_channel_output_config(TIMER1,TIMER_CH_1,&timer_ocintpara);



    timer_channel_output_pulse_value_config(TIMER1,TIMER_CH_1,899);

    timer_channel_output_mode_config(TIMER1,TIMER_CH_1,TIMER_OC_MODE_PWM0);

    timer_channel_output_shadow_config(TIMER1,TIMER_CH_1,TIMER_OC_SHADOW_DISABLE);

  /* enable TIMER6 */

    timer_enable(TIMER1);        

                        adctest[0] = (uint32_t)adc_value[PB0_AI9] * 3300 / 4095;

                        adctest[1] = (uint32_t)adc_value[PC0_AI11] * 3300 / 4095;

                        adctest[2] = (uint32_t)adc_value[PC2_AI13] * 3300 / 4095;

                        adctest[3] = (uint32_t)adc_value[PB1_AI10] * 3300 / 4095;

                        adctest[4] = (uint32_t)adc_value[PC1_AI12] * 3300 / 4095;

                        adctest[5] = (uint32_t)adc_value[PF7_PTIN5] * 3300 / 4095;

                        adctest[6] = (uint32_t)adc_value[PA0_AI1] * 3300 / 4095;

                        adctest[7] = (uint32_t)adc_value[PA1_AI2] * 3300 / 4095;

                        adctest[8] = (uint32_t)adc_value[PF3_PTIN1] * 3300 / 4095;