ADC的初始化
void Adc_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
ADC_CommonInitTypeDef ADC_CommonInitStructure;
ADC_InitTypeDef ADC_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1|GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,ENABLE);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_ADC1,DISABLE);
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Disabled;
ADC_CommonInitStructure.ADC_Prescaler = ADC_Prescaler_Div4;
ADC_CommonInit(&ADC_CommonInitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode =DISABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion =2;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_Cmd(ADC1, ENABLE);
}
u16 Get_Adc(u8 ch)
{
ADC_RegularChannelConfig(ADC1,ch,ch, ADC_SampleTime_480Cycles );
ADC_SoftwareStartConv(ADC1);
while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC )==RESET);
ADC_ClearFlag(ADC1, ADC_FLAG_EOC );
return ADC_GetConversionValue(ADC1); //·μ»Ø×î½üò»′ÎADC11æÔò×éμÄ×a»»½á1û
}
主程序
u16 ADC_1;
u16 ADC_2;
int main(void)
{
TIM4CH_PWM_Init(500-1,84-1);
Adc_Init();
delay_init(168);
uart_init(9600);
while(1)
{
USART_SendData(USART1,Get_Adc(ADC_Channel_1)); delay_ms(2000);
USART_SendData(USART1,Get_Adc(ADC_Channel_2)); delay_ms(2000);
}
}
希望大神们给我指教指教。。。。可能是我对单次和连续转换这些理解理解不是很对,谢谢各位大神了。
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这个只能测一路模拟量的值,我想同时测多路AD值怎么测,新手求助
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