gd32f303定时器2通道0触发adc2中断代码

好的，以下是一个基于GD32F303定时器2和ADC2的中断的代码示例，定时器2通道0触发ADC2中断：

#include "gd32f30x.h"

void adc_config(void);
void timer_config(void);

uint16_t adc_value;

int main(void)
{
    adc_config();
    timer_config();
    
    while(1);
}

void adc_config(void)
{
    rcu_periph_clock_enable(RCU_ADC1);
    rcu_adc_clock_config(RCU_CKADC_CKAPB2_DIV8);
    
    adc_sync_mode_config(ADC_SYNC_MODE_INDEPENDENT);
    adc_mode_config(ADC_MODE_FREE);
    adc_data_alignment_config(ADC1, ADC_DATAALIGN_RIGHT);
    adc_channel_length_config(ADC1, ADC_INSERTED_CHANNEL, 1);
    adc_inserted_channel_config(ADC1, 0, ADC_CHANNEL_1, ADC_SAMPLETIME_55POINT5);
    adc_external_trigger_source_config(ADC1, ADC_INSERTED_CHANNEL, ADC0_1_EXTTRIG_INSERTED_NONE);
    adc_external_trigger_config(ADC1, ADC_INSERTED_CHANNEL, ENABLE);
    adc_enable(ADC1);
    adc_interrupt_enable(ADC1, ADC_INT_EOC);
}

void timer_config(void)
{
    rcu_periph_clock_enable(RCU_TIMER2);
    
    timer_oc_parameter_struct timer_ocinitpara;
    timer_parameter_struct timer_initpara;
    
    timer_deinit(TIMER2);
    timer_struct_para_init(&timer_initpara);
    
    timer_initpara.prescaler         = 95;  // 定时器分频系数
    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;
    timer_initpara.counterdirection  = TIMER_COUNTER_UP;
    timer_initpara.period            = 1000; // 定时器重载值
    timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;
    timer_init(TIMER2, &timer_initpara);
    
    timer_struct_para_init(&timer_ocinitpara);
    
    timer_ocinitpara.ocpolarity  = TIMER_OC_POLARITY_HIGH;
    timer_ocinitpara.ocoutputstate = TIMER_OC_OUTPUT_STATE_ENABLE;
    timer_ocinitpara.ocidlestate = TIMER_OC_IDLE_STATE_RESET;
    timer_ocinitpara.compare = 500; // 比较值
    timer_output_compare_config(TIMER2, TIMER_CH_0, &timer_ocinitpara);
    
    nvic_irq_enable(TIMER2_IRQn, 0, 0);
    timer_interrupt_enable(TIMER2, TIMER_INT_CH0);
    
    timer_enable(TIMER2);
}

void ADC1_IRQHandler()
{
    if(adc_flag_get(ADC1, ADC_FLAG_EOC))
    {
        adc_value = adc_regular_data_read(ADC1);
        adc_flag_clear(ADC1, ADC_FLAG_EOC);
    }
}

void TIMER2_IRQHandler(void)
{
    if (timer_interrupt_flag_get(TIMER2, TIMER_INT_CH0))
    {
        adc_software_trigger_enable(ADC1, ADC_INSERTED_CHANNEL); // ADC转换触发
        timer_interrupt_flag_clear(TIMER2, TIMER_INT_CH0);
    }
}

在这个例子中，我们使用定时器2通道0的比较匹配来触发中断，然后在中断服务程序中触发ADC转换。注意，在这个例子中，我们使用了ADC转换完成中断来等待ADC转换完成，这比等待ADC转换完成的while循环更好。同时注意，我们也为ADC1启用了转换完成中断。