如何使用STM8S单片机的多通道AD转换 如何使用STM8S单片机的多通道AD转换
\u5982\u4f55\u4f7f\u7528STM8S\u5355\u7247\u673a\u7684\u591a\u901a\u9053AD\u8f6c\u6362\u53ef\u4ee5\u91c7\u7528ADC\u7cfb\u5217\u82af\u7247\u4f5cA/D\u8f6c\u6362\uff0c\u6839\u636e\u5177\u4f53\u6240\u9009ADC\u82af\u7247\uff0c\u53ef\u6709\u591a\u8def\u8f6c\u6362\u901a\u9053\uff0c\u82e5\u53ea\u6d4b\u7535\u538b\uff0c\u5219\u53ea\u8981\u4e00\u8def\u5c31\u53ef\u4ee5\uff0c\u5176\u5b83\u5404\u8def\u5c31\u6682\u65f6\u4e0d\u7528\uff0c\u82e5\u60f3\u8ba9\u529f\u80fd\u591a\u4e00\u70b9\uff0c\u5219\u53ef\u7528\u5176\u5b83\u901a\u9053\u6d4b\u91cf\u7535\u6d41\u3001\u7535\u963b\u7b49\uff0c\u4f46\u7535\u8def\u5c06\u6bd4\u8f83\u590d\u6742\u3002 \u4e0d\u8fc7\u4e0d\u7528\u5355\u7247\u673a\uff0c\u53ea\u7528\u786c\u4ef6\u5b9e\u73b0\u7684\u7535\u8def\u4e5f\u591f\u590d\u6742\u7684\u3002\u9996\u5148\uff0c\u5e94\u8be5\u8003\u8651\u5b9a\u6807\u5927\u5c0f\uff08\u5373\u6bd4\u4f8b\u5927\u5c0f\u7684\u95ee\u9898\uff09\uff0c\u4e0d\u91c7\u7528\u5355\u7247\u673a\u5219\u53ea\u80fd\u9009\u62e9\u6807\u51c6\u7535\u963b\u5bf9\u5176\u8fdb\u884c\u5206\u538b\u786e\u5b9a\u6bd4\u4f8b\uff0c\u8fd9\u6837\u8bef\u5dee\u5c06\u6bd4\u8f83\u96be\u4e8e\u63a7\u5236\u3002\u5176\u6b21\uff0c\u7531\u4e8e\u6ca1\u6709\u5355\u7247\u673a\uff0c\u6d4b\u91cf\u4ea4\u6d41\u7535\u538b\u65f6\uff0c\u6709\u6548\u503c\u65e0\u6cd5\u8ba1\u7b97\uff0c\u867d\u7136\u53ef\u91c7\u7528\u6574\u6d41\u5143\u4ef6\u5c06\u7535\u538b\u6574\u6d41\u540e\u518d\u5206\u538b\uff0c\u4f46\u4e5f\u662f\u5f71\u54cd\u7cbe\u5ea6\u7684\u3002\u518d\u6b21\uff0cA/D\u8f6c\u6362\u540e\u5982\u4f55\u5c06\u65b0\u7684\u6570\u636e\u9001\u5230LED\u6570\u7801\u7ba1\u5e76\u5237\u65b0\u663e\u793a\u5185\u5bb9\u548c\u5237\u65b0ADC\u82af\u7247\u7684\u8f93\u5165\u8ba9\u5176\u91cd\u65b0\u8fdb\u884cA/D\u8f6c\u6362\uff0c\u4e5f\u53ea\u80fd\u91c7\u7528\u786c\u4ef6\u7535\u8def\u5b9e\u73b0\uff0c\u5177\u4f53\u7684\u786c\u4ef6\u903b\u8f91\u4e5f\u662f\u76f8\u5f53\u590d\u6742\u7684\u3002 \u4ece\u4ee5\u4e0a\u5206\u6790\u770b\uff0c\u5e76\u4e0d\u662f\u4e0d\u80fd\u5b9e\u73b0\uff0c\u786e\u5b9e\u590d\u6742\u5f88\u591a\uff0c\u4f5c\u4e3a\u4e00\u4e2a\u672c\u79d1\u6bd5\u4e1a\u751f\u7684\u5b66\u4f4d\u8bba\u6587\u90fd\u4f1a\u6709\u8fc7\u96be\u4e4b\u5acc\uff0c\u800c\u4e14\u521d\u6b65\u4f30\u7b97\u5b9e\u73b0\u8d77\u6765\u4ef7\u683c\u80af\u5b9a\u6bd4\u91c7\u7528\u5355\u7247\u673a\u9ad8\u4e0d\u5c11\u3002\u8fd9\u6837\u5f97\u4e0d\u8d4f\u5931\u7684\u8bbe\u8ba1\u6709\u8c01\u53bb\u5b9e\u73b0\u5462\uff1f\u4e5f\u8bb8\u53ea\u6709\u6211\u624d\u4f1a\u8003\u8651\u90a3\u4e48\u591a\u5427\u3002
#include "adc.h" u16 TempADC;void ADC_Config(void) { ADC_CR1 |= 0x01; //\u5f00\u59cb\u542f\u52a8\u521d\u59cb\u5316\u5fc5\u987b\u542f\u52a8\u4e00\u6b21 //\u7b2c\u4e00\u6b21\u51991\uff0cADC\u4ece\u4f4e\u529f\u8017\u5524\u9192\uff0c\u7b2c\u4e8c\u6b21\u51991\uff0c\u542f\u52a8ADC\u8f6c\u6362 //ADC_CR1 |= 0x20; //\u4f7f\u80fd\u8f6c\u6362\u7ed3\u675f\u4e2d\u65ad\uff0c\u672c\u4f8b\u4e2d\u91c7\u7528\u7684\u67e5\u8be2\u65b9\u5f0f\u3002} uint16_t Get_ADCCH_Value(ADC1_Channel_TypeDef ADC_Channel){ ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS,ADC_Channel, ADC1_PRESSEL_FCPU_D2, ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_ALL, DISABLE); //\u4f60\u4e5f\u53ef\u4ee5\u7528\u64cd\u4f5c\u5bc4\u5b58\u5668\u7684\u65b9\u5f0f\u4ee3\u7801\u5982\u4e0b\uff0c\u4f46\u672a\u9a8c\u8bc1\u3002#if 0ADC_CR2 = 0x00; // A/D\u7ed3\u679c\u6570\u636e\u5de6\u5bf9\u9f50CLK_PCKENR2 |= 0x08; // \u4f7f\u80fdfMASTER\u4e0eADC\u7684\u8fde\u63a5ADC_CR1 = 0x00;// ADC\u65f6\u949f=\u4e3b\u65f6\u949f/2=8MHz,\u5355\u6b21\u8f6c\u6362\u6a21\u5f0fADC_CSR = 0x01; // \u9009\u62e9\u901a\u90532ADC_TDRL = 0x01; // \u7981\u6b62\u65bd\u5bc6\u7279\u89e6\u53d1\u529f\u80fd ADC_TDRH = 0x01;ADC_CR1 = 0x03; //2\u5206\u9891\uff0c\u8fde\u7eed\u8f6c\u6362\uff0c\u542f\u52a8ADCADC_CR2 = 0x31; //\u5916\u90e8\u4e8b\u4ef6\u4fdd\u7559\uff0c\u6570\u636e\u53f3\u5bf9\u9f50\uff0c\u7981\u6b62\u626b\u63cf\u6a21\u5f0f\uff0cADC_CSR|= 0x01; //\u9009\u62e9\u901a\u90531#endif ADC1_ConversionConfig(ADC1_CONVERSIONMODE_CONTINUOUS, ADC_Channel,ADC1_ALIGN_RIGHT); ADC_CR1 |= 0x01; //\u5f00\u59cb\u542f\u52a8\u8f6c\u6362 while(!(ADC_CSR & 0x80)); //\u7b49\u5f85\u8f6c\u6362\u7ed3\u675f return ADC1_GetConversionValue(); //\u8fd4\u56deADC\u7ed3\u679c}//\u8fd9\u4e2a\u521d\u59cb\u5316\u4ee3\u7801\u5f88\u91cd\u8981\uff0c\u4e0d\u80fd\u7701\uff0c\u6bcf\u6b21\u5207\u6362\u901a\u9053\u90fd\u8981\u521d\u59cb\u5316\u4e00\u6b21\uff01\u5728main\u51fd\u6570\u4e2d\u76f4\u63a5\u8c03\u7528\u5373\u53ef\uff1a TempADC=Get_ADCCH_Value(ADC1_CHANNEL_1); //\u83b7\u53d6AD\u8f6c\u5316\u503c WetADC=Get_ADCCH_Value(ADC1_CHANNEL_3; //\u83b7\u53d6AD\u8f6c\u5316\u503c
我给你个例程，我这是两个通道，一个是采集音频，然后彩灯随音乐节奏闪烁，同时采集电池电量。void AD2_Config(void)
{
/* Init GPIO for ADC2 */
GPIO_Init(GPIOB, GPIO_PIN_6, GPIO_MODE_IN_FL_NO_IT);
/* De-Init ADC peripheral*/
ADC1_DeInit();
ADC1_ClearITPendingBit(ADC1_IT_EOC);
/* Init ADC1 peripheral */
ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_6, ADC1_PRESSEL_FCPU_D18, \
ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL6,\
DISABLE);
/* Enable EOC interrupt */
//if(autoFm == 1)
ADC1_ITConfig(ADC1_IT_EOCIE,DISABLE);
//else
// ADC1_ITConfig(ADC1_IT_EOCIE,ENABLE);
/* Enable general interrupts */
/*Start Conversion */
ADC1_StartConversion();
}
void AD_Config(void)
{
/* Init GPIO for ADC2 */
GPIO_Init(GPIOB, GPIO_PIN_7, GPIO_MODE_IN_FL_NO_IT);
// GPIOD->ODR &= 0x8f;
/* De-Init ADC peripheral*/
ADC1_DeInit();
ADC1_ClearITPendingBit(ADC1_IT_EOC);
/* Init ADC1 peripheral */
ADC1_Init(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_7, ADC1_PRESSEL_FCPU_D18, \
ADC1_EXTTRIG_TIM, DISABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_CHANNEL7,\
DISABLE);
/* Enable EOC interrupt */
// if(autoFm == 1)
// ADC1_ITConfig(ADC1_IT_EOCIE,DISABLE);
//else
ADC1_ITConfig(ADC1_IT_EOCIE,ENABLE);
/*Start Conversion */
ADC1_StartConversion();
}
main()
{
TIM2_Config();
TIM4_Config();
AD2_Config();
TIM1_Config();
enableInterrupts();
while(1)
{
if(ADChange >= 1)//这是个延时，多久进一次
{
AD2_Config();
while(RESET == ADC1_GetFlagStatus(ADC1_FLAG_EOC));
VoicADLeve = ADC1_GetConversionValue();
AD_Config();
ADChange = 0;
ADChange = 0;
}
}
}
在ADC中断里面
INTERRUPT_HANDLER(ADC2_IRQHandler, 22)
{
ADC1_ClearITPendingBit(ADC2_IT_EOC);
}
INTERRUPT_HANDLER(ADC1_IRQHandler, 22)
{
uint16_t temp;
temp = ADC1_GetConversionValue();//这是采集音频
if(temp < min_ad)
{
min_ad = temp;
}
if(temp > max_ad)
{
max_ad= temp;
}
ADC1_ClearITPendingBit(ADC1_IT_EOC);
}
这程序我只给了你ADC的部分
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绛旓細STM8鐨鎸囦护绯荤粺鏈韩涓嶆敮鎸佷綅鎿嶄綔锛屼竴鑸氳繃浠ヤ笅鏂瑰紡杩涜浣嶆搷浣滐細渚嬪锛歅A_ODR |= 0x04;//灏哖A_ODR瀵勫瓨鍣ㄧ殑bit2缃1PB_DDR |= (1 << 5);//灏哖B_DDR瀵勫瓨鍣ㄧ殑bit5缃1TIM1_IER &=~ 0x01;//灏員IM1_IER鐨刡it0缃0ADC_CR3 &=~ (1 << 6);//灏咥DC_CR3鐨刡it6缃0绫讳技鐨勮祴鍊兼柟寮忓鎵鏈...
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