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#include "gd32f30x.h"
#include "systick.h"
#include <stdio.h>
#include "gd32f307c_eval.h"
void rcu_config(void);
void gpio_config(void);
void dma_config(void);
void adc_config(void);
/*!
\brief main function
\param[in] none
\param[out] none
\retval none
*/
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);
/* DMA configuration */
dma_config();
/* ADC configuration */
adc_config();
while(1){
delay_1ms(1000);
printf("\r\n //*******************************//");
printf("\r\n ADC0 routine channel data = %04X", adc_value[0]);
printf("\r\n ADC0 routine channel data = %04X", adc_value[1]);
printf("\r\n ADC0 routine channel data = %04X", adc_value[2]);
printf("\r\n ADC0 routine channel data = %04X\r\n", adc_value[3]);
}
}
void rcu_config(void)
{
/* enable GPIOA clock */
rcu_periph_clock_enable(RCU_GPIOA);
/* enable ADC clock */
rcu_periph_clock_enable(RCU_ADC0);
/* enable DMA0 clock */
rcu_periph_clock_enable(RCU_DMA0);
/* config ADC clock */
rcu_adc_clock_config(RCU_CKADC_CKAPB2_DIV6);
}
void gpio_config(void)
{
/* config the GPIO as analog mode */
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_10MHZ, GPIO_PIN_0);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_10MHZ, GPIO_PIN_1);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_10MHZ, GPIO_PIN_2);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_10MHZ, GPIO_PIN_3);
}
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 single 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_16BIT;
dma_data_parameter.memory_width = DMA_MEMORY_WIDTH_16BIT;
dma_data_parameter.direction = DMA_PERIPHERAL_TO_MEMORY;
dma_data_parameter.number = 4;
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);
}
void adc_config(void)
{
/* ADC mode config */
adc_mode_config(ADC_MODE_FREE);
/* ADC continuous function enable */
adc_special_function_config(ADC0, ADC_CONTINUOUS_MODE, ENABLE);
/* ADC scan function enable */
adc_special_function_config(ADC0, ADC_SCAN_MODE, ENABLE);
/* ADC data alignment config */
adc_data_alignment_config(ADC0, ADC_DATAALIGN_RIGHT);
/* ADC channel length config */
adc_channel_length_config(ADC0, ADC_ROUTINE_CHANNEL, 4);
/* ADC routine channel config */
adc_routine_channel_config(ADC0, 0, ADC_CHANNEL_0, ADC_SAMPLETIME_55POINT5);
adc_routine_channel_config(ADC0, 1, ADC_CHANNEL_1, ADC_SAMPLETIME_55POINT5);
adc_routine_channel_config(ADC0, 2, ADC_CHANNEL_2, ADC_SAMPLETIME_55POINT5);
adc_routine_channel_config(ADC0, 3, ADC_CHANNEL_3, ADC_SAMPLETIME_55POINT5);
/* ADC trigger config */
adc_external_trigger_source_config(ADC0, ADC_ROUTINE_CHANNEL, ADC0_1_2_EXTTRIG_ROUTINE_NONE);
adc_external_trigger_config(ADC0, ADC_ROUTINE_CHANNEL, ENABLE);
/* ADC DMA function enable */
adc_dma_mode_enable(ADC0);
/* enable ADC interface */
adc_enable(ADC0);
delay_1ms(1);
/* ADC calibration and reset calibration */
adc_calibration_enable(ADC0);
/* ADC software trigger enable */
adc_software_trigger_enable(ADC0, ADC_ROUTINE_CHANNEL);
}
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