#include "gd32f10x.h"
#include "systick.h"
#include <stdio.h>
#include "gd32f10x_eval.h"
//#define BOARD_ADC_CHANNEL ADC_CHANNEL_13
//#define ADC_GPIO_PORT GPIOC
//#define ADC_GPIO_PIN GPIO_PIN_3
uint16_t adc_value[8];
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();
/* DMA configuration */
dma_config();
/* configure COM port */
gd_eval_com_init(EVAL_COM0);
/* ADC configuration */
adc_config();
while(1){
delay_1ms(1000);
printf("\r\n //*******************************//");
printf("\r\n PA2 regular channel data = %04d", adc_value[0]);
printf("\r\n PC5 regular channel data = %04d", adc_value[1]);
printf("\r\n PC4 regular channel data = %04d", adc_value[2]);
printf("\r\n PA3 regular channel data = %04d\r\n", adc_value[3]);
printf("\r\n PC0 regular channel data = %04d", adc_value[4]);
printf("\r\n PA1 regular channel data = %04d", adc_value[5]);
printf("\r\n PA0 regular channel data = %04d", adc_value[6]);
printf("\r\n PC1 regular channel data = %04d\r\n", adc_value[7]);
}
}
/*!
\brief configure the different system clocks
\param[in] none
\param[out] none
\retval none
*/
void rcu_config(void)
{
/* enable GPIOA clock */
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_GPIOC);
/* 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_DIV8);
}
/*!
\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_50MHZ, GPIO_PIN_2);
gpio_init(GPIOC, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_5);
gpio_init(GPIOC, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_4);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_3);
gpio_init(GPIOC, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_0);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_1);
gpio_init(GPIOA, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_0);
gpio_init(GPIOC, GPIO_MODE_AIN, GPIO_OSPEED_50MHZ, GPIO_PIN_1);
}
/*!
\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 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 = 8;
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 ADC peripheral
\param[in] none
\param[out] none
\retval none
*/
void adc_config(void)
{
/* reset ADC */
adc_deinit(ADC0);
/* ADC mode config */
adc_mode_config(ADC_MODE_FREE);
/* ADC contineous function enable */
adc_special_function_config(ADC0, ADC_CONTINUOUS_MODE,ENABLE );
/* ADC scan mode disable */
adc_special_function_config(ADC0, ADC_SCAN_MODE, DISABLE);
/* ADC data alignment config */
adc_data_alignment_config(ADC0, ADC_DATAALIGN_RIGHT);
/* ADC channel length config */
adc_channel_length_config(ADC0, ADC_REGULAR_CHANNEL, 8);
/* ADC regular channel config */
/* ADC regular channel config */
adc_regular_channel_config(ADC0, 0, ADC_CHANNEL_2, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 1, ADC_CHANNEL_15, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 2, ADC_CHANNEL_14, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 3, ADC_CHANNEL_3, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 4, ADC_CHANNEL_10, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 5, ADC_CHANNEL_1, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 6, ADC_CHANNEL_0, ADC_SAMPLETIME_239POINT5);
adc_regular_channel_config(ADC0, 7, ADC_CHANNEL_11, ADC_SAMPLETIME_239POINT5);
/* ADC trigger config */
adc_external_trigger_source_config(ADC0, ADC_REGULAR_CHANNEL, ADC0_1_2_EXTTRIG_REGULAR_NONE);
adc_external_trigger_config(ADC0, ADC_REGULAR_CHANNEL, ENABLE);
/* enable ADC interface */
adc_enable(ADC0);
delay_1ms(1);
/* ADC calibration and reset calibration */
adc_calibration_enable(ADC0);
/* ADC DMA function enable */
adc_dma_mode_enable(ADC0);
/* ADC software trigger enable */
adc_software_trigger_enable(ADC0, ADC_REGULAR_CHANNEL);
}
/* retarget the C library printf function to the USART */
int fputc(int ch, FILE *f)
{
usart_data_transmit(EVAL_COM0, (uint8_t)ch);
while(RESET == usart_flag_get(EVAL_COM0, USART_FLAG_TBE));
return ch;
}