关于GD32F507官方例程中的ADC0、ADC1并行采样例程

只看该作者 · 2022-8-12 15:13

例程中ADC0的采样结果通过DMA0搬移到adc_value中，但是ADC1的转换结果呢？代码中并没有读取对ADC1的转换结果啊，是我理解错了吗？

uint32_t adc_value[2];
int main(void)
{
/* system clocks configuration */
rcu_config();
/* systick configuration */
systick_config();
/* GPIO configuration */
gpio_config();
/* configure COM port */
gd_eval_com_init(EVAL_COM0);
/* TIMER configuration */
timer_config();
/* DMA configuration */
dma_config();
/* ADC configuration */
adc_config();

/* enable TIMER1 */
timer_enable(TIMER1);

while(1){
      delay_1ms(1000);

      printf("\n adc_value[0] = %08X \n", adc_value[0]);
      printf("\n adc_value[1] = %08X \n", adc_value[1]);
      printf("\n ******************* \n");
}
}

/*!
\brief    configure the different system clocks
\param[in]  none
\param[out] none
\retval    none
*/
void rcu_config(void)
{
/* enable GPIO clock */
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOC);
/* enable ADC0 clock */
rcu_periph_clock_enable(RCU_ADC0);
/* enable ADC1 clock */
rcu_periph_clock_enable(RCU_ADC1);
/* enable DMA0 clock */
rcu_periph_clock_enable(RCU_DMA0);
/* enable timer1 clock */
rcu_periph_clock_enable(RCU_TIMER1);
/* config ADC clock */
rcu_adc_clock_config(RCU_CKADC_CKAPB2_DIV6);
}

/*!
\brief    configure the GPIO peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void gpio_config(void)
{
/* config the GPIO as analog mode */
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_MAX, GPIO_PIN_0);
gpio_init(GPIOC, GPIO_MODE_AIN, GPIO_OSPEED_MAX, GPIO_PIN_0);
}

/*!
\brief    configure the DMA peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void dma_config(void)
{
/* ADC_DMA_channel configuration */
dma_parameter_struct dma_data_parameter;

/* ADC DMA_channel configuration */
dma_deinit(DMA0, DMA_CH0);

/* initialize DMA data mode */
dma_data_parameter.periph_addr  = (uint32_t)(&ADC_RDATA(ADC0));
dma_data_parameter.periph_inc = DMA_PERIPH_INCREASE_DISABLE;
dma_data_parameter.memory_addr  = (uint32_t)(&adc_value);
dma_data_parameter.memory_inc = DMA_MEMORY_INCREASE_ENABLE;
dma_data_parameter.periph_width = DMA_PERIPHERAL_WIDTH_32BIT;
dma_data_parameter.memory_width = DMA_MEMORY_WIDTH_32BIT;
dma_data_parameter.direction = DMA_PERIPHERAL_TO_MEMORY;
dma_data_parameter.number    = 2;
dma_data_parameter.priority    = DMA_PRIORITY_HIGH;
dma_init(DMA0, DMA_CH0, &dma_data_parameter);

dma_circulation_enable(DMA0, DMA_CH0);

/* enable DMA channel */
dma_channel_enable(DMA0, DMA_CH0);
}

/*!
\brief    configure the TIMER peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void timer_config(void)
{
timer_oc_parameter_struct timer_ocintpara;
timer_parameter_struct timer_initpara;

/* TIMER1 configuration */
timer_initpara.prescaler       = 8399;
timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 9999;
timer_initpara.clockdivision    = TIMER_CKDIV_DIV1;
timer_initpara.repetitioncounter = 0;
timer_init(TIMER1,&timer_initpara);

/* CH0 configuration in PWM mode1 */
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, 3999);
timer_channel_output_mode_config(TIMER1, TIMER_CH_1, TIMER_OC_MODE_PWM1);
timer_channel_output_shadow_config(TIMER1, TIMER_CH_1, TIMER_OC_SHADOW_DISABLE);
}

/*!
\brief    configure the ADC peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void adc_config(void)
{
/* ADC continous function enable */
adc_special_function_config(ADC0, ADC_SCAN_MODE, ENABLE);
adc_special_function_config(ADC0, ADC_CONTINUOUS_MODE, DISABLE);
adc_special_function_config(ADC1, ADC_SCAN_MODE, ENABLE);
adc_special_function_config(ADC1, ADC_CONTINUOUS_MODE, DISABLE);
/* ADC trigger config */
adc_external_trigger_source_config(ADC0, ADC_REGULAR_CHANNEL, ADC0_1_EXTTRIG_REGULAR_T1_CH1);
adc_external_trigger_source_config(ADC1, ADC_REGULAR_CHANNEL, ADC0_1_2_EXTTRIG_REGULAR_NONE);
/* ADC data alignment config */
adc_data_alignment_config(ADC0, ADC_DATAALIGN_RIGHT);
adc_data_alignment_config(ADC1, ADC_DATAALIGN_RIGHT);
/* ADC mode config */
adc_mode_config(ADC_DAUL_REGULAL_PARALLEL);
/* ADC channel length config */
adc_channel_length_config(ADC0, ADC_REGULAR_CHANNEL, 2);
adc_channel_length_config(ADC1, ADC_REGULAR_CHANNEL, 2);

/* ADC regular channel config */
adc_regular_channel_config(ADC0, 0, ADC_CHANNEL_0, ADC_SAMPLETIME_55POINT5);
adc_regular_channel_config(ADC0, 1, ADC_CHANNEL_10, ADC_SAMPLETIME_55POINT5);
adc_regular_channel_config(ADC1, 0, ADC_CHANNEL_10, ADC_SAMPLETIME_55POINT5);
adc_regular_channel_config(ADC1, 1, ADC_CHANNEL_0, ADC_SAMPLETIME_55POINT5);

/* ADC external trigger enable */
adc_external_trigger_config(ADC0, ADC_REGULAR_CHANNEL, ENABLE);
adc_external_trigger_config(ADC1, ADC_REGULAR_CHANNEL, ENABLE);

/* enable ADC interface */
adc_enable(ADC0);
delay_1ms(1);
/* ADC calibration and reset calibration */
adc_calibration_enable(ADC0);
/* enable ADC interface */
adc_enable(ADC1);
delay_1ms(1);
/* ADC calibration and reset calibration */
adc_calibration_enable(ADC1);

/* ADC DMA function enable */
adc_dma_mode_enable(ADC0);
}