GD32H757 ADC定时器+DMA DMA的数据不更新

只看该作者 · 2024-5-6 02:17

void ADC_rcu_config(void)
{
/* enable GPIO clock */
rcu_periph_clock_enable(RCU_GPIOA);

/* enable ADC clock */
rcu_periph_clock_enable(RCU_ADC0);
/* enable DMA clock */
rcu_periph_clock_enable(RCU_DMA0);
rcu_periph_clock_enable(RCU_DMAMUX);

/* enable trigsel clock */
rcu_periph_clock_enable(RCU_TRIGSEL);
/* enable timer1 clock */
rcu_periph_clock_enable(RCU_TIMER1);
rcu_timer_clock_prescaler_config(RCU_TIMER_PSC_MUL4);
}

/*!
\brief    configure the GPIO peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void ADC_GPIO_Config(void)
{
/* config the GPIO as analog mode */
/*  */
gpio_mode_set(GPIOA, GPIO_MODE_ANALOG, GPIO_PUPD_NONE,  AirPress_PIN | IExpValve_PIN);
}

/*!
\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;

/* enable trigsel clock */
rcu_periph_clock_enable(RCU_TRIGSEL);
/* enable timer1 clock */
rcu_periph_clock_enable(RCU_TIMER1);
rcu_timer_clock_prescaler_config(RCU_TIMER_PSC_MUL4);

/* TIMER1 configuration */
timer_initpara.prescaler       = 300-1;
timer_initpara.alignedmode    = TIMER_COUNTER_EDGE;
timer_initpara.counterdirection  = TIMER_COUNTER_UP;
timer_initpara.period          = 500-1;
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, 100);
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 DMA peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void ADC_DMA_Config(void)
{
/* ADC_DMA_channel configuration */
dma_single_data_parameter_struct dma_single_data_parameter;

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

/* initialize DMA single data mode */
dma_single_data_parameter.request = DMA_REQUEST_ADC0;
dma_single_data_parameter.periph_addr = (uint32_t)(&ADC_RDATA(ADC0));
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_32BIT;
dma_single_data_parameter.direction = DMA_PERIPH_TO_MEMORY;
dma_single_data_parameter.number = 2;
dma_single_data_parameter.priority = DMA_PRIORITY_HIGH;
dma_single_data_mode_init(DMA0, DMA_CH0, &dma_single_data_parameter);

/* enable DMA circulation mode 循环模式*/
dma_circulation_enable(DMA0, DMA_CH0);

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

/*!
\brief    configure the ADC peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void ADC_Config(void)
{
/* reset ADC */
adc_deinit(ADC0);
/* ADC clock config */
adc_clock_config(ADC0, ADC_CLK_SYNC_HCLK_DIV6);
/* ADC contineous function enable */
adc_special_function_config(ADC0, ADC_CONTINUOUS_MODE, DISABLE);
/* ADC scan mode enable */
adc_special_function_config(ADC0, ADC_SCAN_MODE, ENABLE);
/* ADC resolution config */
adc_resolution_config(ADC0, ADC_RESOLUTION_14B);
/* ADC data alignment config */
adc_data_alignment_config(ADC0, ADC_DATAALIGN_RIGHT);

/* ADC channel length config */
adc_channel_length_config(ADC0, ADC_REGULAR_CHANNEL, 2);

/* ADC regular channel config */
adc_regular_channel_config(ADC0, 0, ADC_CHANNEL_15, 240);
adc_regular_channel_config(ADC0, 1, ADC_CHANNEL_14, 240);

/* ADC trigger config */
adc_external_trigger_config(ADC0, ADC_REGULAR_CHANNEL, EXTERNAL_TRIGGER_RISING);

/* clear the ADC flag */
adc_interrupt_flag_clear(ADC0, ADC_INT_FLAG_EOC);
adc_interrupt_flag_clear(ADC0, ADC_INT_FLAG_EOIC);

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

/* enable ADC interface */
adc_enable(ADC0);
/* wait for ADC stability */
LCD_delay_ms(1);
/* ADC calibration mode config */
adc_calibration_mode_config(ADC0, ADC_CALIBRATION_OFFSET_MISMATCH);
/* ADC calibration number config */
adc_calibration_number(ADC0, ADC_CALIBRATION_NUM1);
/* ADC calibration and reset calibration */
adc_calibration_enable(ADC0);

}
/*!
\brief    configure the TRIGSEL peripheral
\param[in]  none
\param[out] none
\retval    none
*/
void trigsel_config(void)
{
trigsel_init(TRIGSEL_OUTPUT_ADC0_INSTRG, TRIGSEL_INPUT_TIMER1_CH1);
}

/**
\brief    configure the nested vectored interrupt controller
\param[in]  none
\param[out] none
\retval    none
  */
void nvic_config(void)
{
nvic_irq_enable(ADC0_1_IRQn, 10, 0);
}

void BSP_ADC_Init(void)
{
ADC_rcu_config();
ADC_GPIO_Config();
timer_config();
trigsel_config();
// nvic_config();

ADC_DMA_Config();

ADC_Config();

timer_enable(TIMER1);
}

想实现ADC的定时器触发+DMA ，配置完后，DMA的数据不更新，请坛友帮忙看看