STM8\u7684ADC\u7684\u4e94\u79cd\u5de5\u4f5c\u6a21\u5f0f<\/p>\n
STM8\u7684ADC\u662f10\u4f4d\u7684\u9010\u6b21\u6bd4\u8f83\u578b\u6a21\u62df\u6570\u5b57\u8f6c\u6362\u5668\uff0c\u591a\u8fbe16\u4e2a\u591a\u529f\u80fd\u7684\u8f93\u5165\u901a\u9053\u3002\u62e5\u67095\u79cd\u8f6c\u6362\u6a21\u5f0f\uff0c\u8f6c\u6362\u7ed3\u675f\u53ef\u4ea7\u751f\u4e2d\u65ad\u3002<\/p>\n
STM8 ADC\u7684\u521d\u59cb\u5316\u987a\u5e8f\u5982\u4e0b\uff1a<\/p>\n
1\u3001AD\u8f93\u5165\u901a\u9053\u5bf9\u5e94\u7684IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165\uff1b<\/p>\n
2\u3001\u914d\u7f6eAD\u53c2\u6570\uff0c\u5982\uff1a\u9884\u5206\u9891\u7cfb\u6570\u3001\u662f\u5426\u4f7f\u7528\u5916\u90e8\u89e6\u53d1\u8f6c\u6362\u3001\u662f\u5426\u4f7f\u7528\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\u3001\u662f\u5426\u4f7f\u7528\u7f13\u5b58\u4ee5\u53ca\u662f\u5426\u4f7f\u7528\u626b\u63cf\u6a21\u5f0f\u7b49\uff1b<\/p>\n
3\u3001\u5f00\u542fADC\uff1b<\/p>\n
4\u3001\u5f00\u542f\u8f6c\u6362\uff1b<\/p>\n
\u6ce8\u610f\uff01\u5f00\u542fADC\u548c\u5f00\u542f\u8f6c\u6362\u5b9e\u9645\u4e0a\u90fd\u662f\u7f6e\u4f4dADON\u3002<\/p>\n
\u7136\u540e\u5c31\u53ef\u4ee5\u901a\u8fc7ADC_DR\u5bc4\u5b58\u5668\u8bfb\u53d6\u8f6c\u6362\u540e\u7684\u503c\u3002<\/p>\n
l\u5355\u6b21\u6a21\u5f0f\uff1a<\/p>\n
\u5728\u5355\u6b21\u8f6c\u6362\u6a21\u5f0f\u4e2d\uff0cADC\u4ec5\u5728\u7531ADC_CSR\u5bc4\u5b58\u5668\u7684CH[3:0]\u9009\u5b9a\u7684\u901a\u9053\u4e0a\u5b8c\u6210\u4e00\u6b21\u8f6c\u6362\u3002\u8be5\u6a21\u5f0f\u662f\u5728\u5f53CONT\u4f4d\u4e3a0\u65f6\u901a\u8fc7\u7f6e\u4f4dADC_CR1\u5bc4\u5b58\u5668\u7684ADON\u4f4d\u6765\u542f\u52a8\u7684\u3002<\/p>\n
\u4e00\u65e6\u8f6c\u6362\u5b8c\u6210\uff0c\u8f6c\u6362\u540e\u7684\u6570\u636e\u5b58\u50a8\u5728ADC_DR\u5bc4\u5b58\u5668\u4e2d\uff0cEOC(\u8f6c\u6362\u7ed3\u675f)\u6807\u5fd7\u88ab\u7f6eEOCIE \u88ab\u7f6e\u4f4d\u5c06\u4ea7\u751f\u4e00\u4e2a\u4e2d\u65ad\u3002<\/p>\n
\u6ce8\u610f\uff01\u521d\u59cb\u5316\u7684\u65f6\u5019\u53ea\u80fd\u9009\u62e9\u4e00\u4e2a\u901a\u9053\u3002\u8f6c\u6362\u591a\u4e2a\u901a\u9053\u53ea\u80fd\u901a\u8fc7\u53cd\u590d\u91cd\u65b0\u521d\u59cb\u5316\u6216\u626b\u63cf\u6a21\u5f0f\uff01<\/p>\n
\u793a\u4f8b\u7a0b\u5e8f\uff1a<\/p>\n
void adc_init(void)<\/p>\n
{<\/p>\n
GPIO_Init(GPIOD,GPIO_PIN_3,GPIO_MODE_IN_PU_NO_IT);\/\/AIN4 IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D2);\/\/\u9884\u5206\u98912<\/p>\n
ADC1_ExternalTriggerConfig(ADC1_EXTTRIG_TIM,DISABLE);\/\/\u4e0d\u4f7f\u7528\u5916\u90e8\u89e6\u53d1<\/p>\n
ADC1_SchmittTriggerConfig(ADC1_SCHMITTTRIG_CHANNEL4,DISABLE);<\/p>\n
\/\/\u7981\u6b62AIN2 AIN4\u7684\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\uff0c\u964d\u4f4eIO\u9759\u6001\u529f\u8017<\/p>\n
\/\/PD5,PD6\u4e0a\u7684\u901a\u9053\u5982\u679c\u65bd\u5bc6\u7279\u65b9\u5f0f\u7981\u7528\u4f1a\u5bfc\u81f4\u4e32\u53e3\u65e0\u6cd5\u6536\u53d1\u6570\u636e\uff01<\/p>\n
ADC1_ConversionConfig(ADC1_CONVERSIONMODE_SINGLE,\/\/\u5355\u6b21\u8f6c\u6362<\/p>\n
ADC1_CHANNEL_4,\/\/\u53ea\u80fd\u9009\u62e9\u4e00\u4e2a\u901a\u9053\uff01<\/p>\n
ADC1_ALIGN_RIGHT);\/\/\u53f3\u5bf9\u9f50<\/p>\n
ADC1_Cmd(ENABLE);\/\/\u5f00\u542fADC<\/p>\n
}<\/p>\n
void main( void )<\/p>\n
{<\/p>\n
u16value=0;<\/p>\n
adc_init();<\/p>\n
while(1)<\/p>\n
{<\/p>\n
ADC1_StartConversion();\/\/\u5f00\u542f\u4e00\u6b21\u8f6c\u6362\u4e00\u6b21<\/p>\n
while(!ADC1_GetFlagStatus(ADC1_FLAG_EOC));\/\/\u7b49\u5f85\u8f6c\u6362\u5b8c\u6210<\/p>\n
ADC1_ClearFlag(ADC1_FLAG_EOC);\/\/\u8f6f\u4ef6\u6e05\u9664<\/p>\n
value=(u16)ADC1_GetConversionValue();\/\/\u4eceADC_DR\u4e2d\u8bfb\u53d6ADC\u503c<\/p>\n
}<\/p>\n
}<\/p>\n
l\u8fde\u7eed\u6a21\u5f0f\u4e0e\u5e26\u7f13\u5b58\u7684\u8fde\u7eed\u6a21\u5f0f\uff1a<\/p>\n
\u5728\u8fde\u6362\u6a21\u5f0f\u4e2d\uff0cADC\u5728\u5b8c\u6210\u4e00\u6b21\u8f6c\u6362\u540e\u5c31\u7acb\u523b\u5f00\u59cb\u4e0b\u4e00\u6b21\u7684\u8f6c\u6362\u3002\u5f53CONT\u4f4d\u88ab\u7f6e\u4f4d\u65f6\u5373\u5c06ADC\u8bbe\u4e3a\u8fde\u7eed\u6a21\u5f0f\uff0c\u8be5\u6a21\u5f0f\u662f\u901a\u8fc7\u7f6e\u4f4d ADC_CR1\u5bc4\u5b58\u5668\u7684 ADON \u4f4d\u6765\u542f\u52a8\u7684\u3002<\/p>\n
\u5982\u679c\u7f13\u51b2\u529f\u80fd\u6ca1\u6709\u88ab\u4f7f\u80fd(ADC_CR3\u5bc4\u5b58\u5668\u7684DBUF\u4f4d=0)\uff0c\u90a3\u4e48\u8f6c\u6362\u7ed3\u679c\u6570\u636e\u4fdd\u5b58\u5728ADC_DR\u5bc4\u5b58\u5668\u4e2d\u540c\u65f6 EOC \u6807\u5fd7\u88ab\u7f6e\u4f4d\u3002\u5982\u679cEOCIE \u4f4d\u5df2\u88ab\u7f6e\u4f4d\u65f6\u5c06\u4ea7\u751f\u4e00\u6b21\u4e2d\u65ad\u3002\u7136\u540e\u5f00\u59cb\u4e0b\u4e00\u6b21\u8f6c\u6362\u3002<\/p>\n
\u5982\u679c\u7f13\u5b58\u529f\u80fd\u88ab\u4f7f\u80fd(DBUF=1)\uff0c\u90a3\u4e48\u67d0\u4e2a\u9009\u5b9a\u901a\u9053\u4e0a\u76848\u4e2a\u6216\u800510\u4e2a\u8fde\u7eed\u7684\u8f6c\u6362\u7ed3\u679c\u4f1a\u586b\u6ee1\u6570\u636e\u7f13\u5b58\uff08\u6b64\u65f6\u586b\u6ee1\u7684\u662f\u540c\u4e00\u4e2a\u901a\u9053\u7684\u6570\u636e\uff01\uff01\u626b\u63cf\u6a21\u5f0f\u65f6\u624d\u662f\u4e0d\u540c\u901a\u9053\u7684\u6570\u636e\uff01\uff09\uff0c\u5f53\u7f13\u5b58\u88ab\u586b\u6ee1\u65f6\uff0cEOC(\u8f6c\u6362\u7ed3\u675f)\u6807\u5fd7\u88ab\u7f6e\u4f4d\uff0c\u5982\u679cEOCIE\u4f4d\u5df2\u88ab\u7f6e\u4f4d\uff0c\u5219\u4f1a\u4ea7\u751f\u4e00\u4e2a\u4e2d\u65ad\uff0c\u7136\u540e\u4e00\u4e2a\u65b0\u7684\u8f6c\u6362\u81ea\u52a8\u5f00\u59cb\u3002\u5982\u679c\u67d0\u4e2a\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\u5728\u88ab\u8bfb\u8d70\u4e4b\u524d\u88ab\u8986\u76d6\uff0cOVR\u6807\u5fd7\u5c06\u7f6e1\u3002<\/p>\n
\u5982\u679c\u8981\u505c\u6b62\u8fde\u7eed\u8f6c\u6362\uff0c\u53ef\u4ee5\u590d\u4f4d\u6e05\u96f6CONT\u4f4d\u6765\u505c\u6b62\u8f6c\u6362\u6216\u8005\u590d\u4f4d\u6e05\u96f6ADON\u4f4d\u6765\u5173\u95edADC\u7684\u7535\u6e90\u3002<\/p>\n
\u793a\u4f8b\u7a0b\u5e8f\uff08\u4e0d\u5e26\u7f13\u5b58\uff09\uff1a<\/p>\n
void adc_init(void)<\/p>\n
{<\/p>\n
GPIO_Init(GPIOD,GPIO_PIN_3,GPIO_MODE_IN_PU_NO_IT);\/\/AIN4 IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D2);\/\/\u9884\u5206\u98912<\/p>\n
ADC1_ExternalTriggerConfig(ADC1_EXTTRIG_TIM,DISABLE);\/\/\u4e0d\u4f7f\u7528\u5916\u90e8\u89e6\u53d1<\/p>\n
ADC1_SchmittTriggerConfig(ADC1_SCHMITTTRIG_CHANNEL4,DISABLE);<\/p>\n
\/\/\u7981\u6b62AIN2 AIN4\u7684\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\uff0c\u964d\u4f4eIO\u9759\u6001\u529f\u8017<\/p>\n
\/\/PD5,PD6\u4e0a\u7684\u901a\u9053\u5982\u679c\u65bd\u5bc6\u7279\u65b9\u5f0f\u7981\u7528\u4f1a\u5bfc\u81f4\u4e32\u53e3\u65e0\u6cd5\u6536\u53d1\u6570\u636e\uff01<\/p>\n
ADC1_ConversionConfig(ADC1_CONVERSIONMODE_CONTINUOUS, \/\/\u8fde\u7eed\u8f6c\u6362<\/p>\n
ADC1_CHANNEL_4,\/\/\u53ea\u80fd\u9009\u62e9\u4e00\u4e2a\u901a\u9053\uff01<\/p>\n
ADC1_ALIGN_RIGHT);\/\/\u53f3\u5bf9\u9f50<\/p>\n
ADC1_Cmd(ENABLE);\/\/\u5f00\u542fADC<\/p>\n
ADC1_StartConversion();\/\/\u5f00\u542f\u8fde\u7eed\u8f6c\u6362<\/p>\n
}<\/p>\n
void main( void )<\/p>\n
{<\/p>\n
u16value=0;<\/p>\n
adc_init();<\/p>\n
while(1)<\/p>\n
{<\/p>\n
while(!ADC1_GetFlagStatus(ADC1_FLAG_EOC));\/\/\u7b49\u5f85\u8f6c\u6362\u5b8c\u6210<\/p>\n
ADC1_ClearFlag(ADC1_FLAG_EOC);\/\/\u8f6f\u4ef6\u6e05\u9664<\/p>\n
value=(u16)ADC1_GetConversionValue();\/\/\u4eceADC_DR\u4e2d\u8bfb\u53d6ADC\u503c<\/p>\n
}<\/p>\n
}<\/p>\n
\u793a\u4f8b\u7a0b\u5e8f\uff08\u5e26\u7f13\u5b58\uff09\uff1a<\/p>\n
void adc_init(void)<\/p>\n
{<\/p>\n
GPIO_Init(GPIOD,GPIO_PIN_3,GPIO_MODE_IN_PU_NO_IT);\/\/AIN4 IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D2);\/\/\u9884\u5206\u98912<\/p>\n
ADC1_ExternalTriggerConfig(ADC1_EXTTRIG_TIM,DISABLE);\/\/\u4e0d\u4f7f\u7528\u5916\u90e8\u89e6\u53d1<\/p>\n
ADC1_SchmittTriggerConfig(ADC1_SCHMITTTRIG_CHANNEL4,DISABLE);<\/p>\n
\/\/\u7981\u6b62AIN2 AIN4\u7684\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\uff0c\u964d\u4f4eIO\u9759\u6001\u529f\u8017<\/p>\n
\/\/PD5,PD6\u4e0a\u7684\u901a\u9053\u5982\u679c\u65bd\u5bc6\u7279\u65b9\u5f0f\u7981\u7528\u4f1a\u5bfc\u81f4\u4e32\u53e3\u65e0\u6cd5\u6536\u53d1\u6570\u636e\uff01<\/p>\n
ADC1_ConversionConfig(ADC1_CONVERSIONMODE_CONTINUOUS, \/\/\u8fde\u7eed\u8f6c\u6362<\/p>\n
ADC1_CHANNEL_4,\/\/\u53ea\u80fd\u9009\u62e9\u4e00\u4e2a\u901a\u9053\uff01<\/p>\n
ADC1_ALIGN_RIGHT);\/\/\u53f3\u5bf9\u9f50<\/p>\n
ADC1_Cmd(ENABLE);\/\/\u5f00\u542fADC<\/p>\n
ADC1_StartConversion();\/\/\u5f00\u542f\u8fde\u7eed\u8f6c\u6362<\/p>\n
ADC1_DataBufferCmd(ENABLE);\/\/\u5f00\u542f\u7f13\u5b58<\/p>\n
}<\/p>\n
void main( void )<\/p>\n
{<\/p>\n
u16value=0;<\/p>\n
adc_init();<\/p>\n
while(1)<\/p>\n
{<\/p>\n
while(!ADC1_GetFlagStatus(ADC1_FLAG_EOC));\/\/\u7b49\u5f85\u8f6c\u6362\u5b8c\u6210<\/p>\n
ADC1_ClearFlag(ADC1_FLAG_EOC);\/\/\u8f6f\u4ef6\u6e05\u9664<\/p>\n
value=0;<\/p>\n
for(u8 i=0;i<10;i++)\/\/<\/p>\n
{<\/p>\n
value+=ADC1_GetBufferValue(i);\/\/\u5c0610\u4e2a\u7f13\u5b58\u4e2d\u7684\u503c\u6c42\u548c<\/p>\n
}<\/p>\n
value=value\/10;\/\/\u6c42\u51faADC\u7684\u5e73\u5747\u503c<\/p>\n
}<\/p>\n
}<\/p>\n
\u6ce8\u610f\uff0c\u53ea\u6709\u5728\u8fde\u7eed\u8f6c\u6362\u6a21\u5f0f\u4e0bADC_DB\u5bc4\u5b58\u5668\u624d\u80fd\u79f0\u4e4b\u4e3a\u7f13\u5b58\uff0c\u6b64\u65f6\u5b58\u50a8\u7684\u662f\u540c\u4e00\u4e2a\u901a\u9053\u591a\u6b21\u8f6c\u6362\u7684\u503c\u3002\u5728\u5355\u6b21\u626b\u63cf\u548c\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\u4e0b\u8be5\u5bc4\u5b58\u5668\u88ab\u7528\u6765\u5b58\u653e\u4e0d\u540c\u901a\u9053\u7684\u8f6c\u6362\u503c\u3002<\/p>\n
l\u5355\u6b21\u626b\u63cf\u6a21\u5f0f\uff1a<\/p>\n
\u8be5\u6a21\u5f0f\u662f\u7528\u6765\u8f6c\u6362\u4eceAIN0\u5230AINn\u4e4b\u95f4\u7684\u4e00\u8fde\u4e32\u6a21\u62df\u901a\u9053\uff0c\u2018n\u2019\u662f\u5728 ADC_CSR\u5bc4\u5b58\u5668\u7684CH[3:0]\u4f4d\u4e2d\u6307\u5b9a\u7684\u901a\u9053\u7f16\u53f7\uff08\u5373CH[3:0]\u91cc\u914d\u7f6e\u7b2cn\u4e2a\u901a\u9053\uff0c\u5c31\u4ece\u901a\u90530\u987a\u5e8f\u9012\u589e\u9010\u4e2a\u901a\u9053\u8fdb\u884c\u8f6c\u6362\uff0c\u76f4\u5230\u7b2cn\u4e2a\u901a\u9053\u7ed3\u675f\u3002\u4f8b\u5982\uff0cCH[3:0]\u91cc\u914d\u7f6e\u4e3aAIN4\uff0c\u5219\u5bf9AIN0\u3001AIN1\u3001AIN2\u3001AIN3\u3001AIN4\u8fdb\u884c\u8f6c\u6362\uff0c\u5176\u4ed6\u901a\u9053\u4e0d\u8f6c\u6362\uff09\u3002\u5728\u626b\u63cf\u8f6c\u6362\u7684\u8fc7\u7a0b\u4e2d\uff0c\u5e8f\u53f7 CH[3:0]\u4f4d\u7684\u503c\u662f\u88ab\u786c\u4ef6\u81ea\u52a8\u66f4\u65b0\u7684\uff0c\u5b83\u603b\u4fdd\u5b58\u5f53\u524d\u6b63\u5728\u88ab\u8f6c\u6362\u7684\u901a\u9053\u7f16\u53f7\u3002<\/p>\n
\u5355\u6b21\u8f6c\u6362\u6a21\u5f0f\u53ef\u4ee5\u5728\u5728SCAN \u4f4d\u88ab\u7f6e\u4f4d\u4e14CONT \u4f4d\u4ee5\u88ab\u6e05\u96f6\u65f6\u901a\u8fc7\u7f6e\u4f4d ADON \u4f4d\u6765\u542f\u52a8\u3002<\/p>\n
\u6ce8\u610f\uff1a\u5f53\u4f7f\u7528\u626b\u63cf\u6a21\u5f0f\u65f6\uff0c\u4e0d\u53ef\u4ee5\u5c06AIN0\u5230AINn\u4e4b\u95f4\u901a\u9053\u5bf9\u5e94\u7684I\/O\u53e3\u8bbe\u4e3a\u8f93\u51fa\u72b6\u6001\uff0c\u56e0\u4e3aADC\u7684\u591a\u8def\u9009\u62e9\u5668\u5df2\u7ecf\u5c06\u8fd9\u4e9bI\/O\u53e3\u7684\u8f93\u51fa\u6a21\u5757\u7981\u7528\u4e86\u3002<\/p>\n
\u5bf9\u4e8e\u5355\u6b21\u626b\u63cf\u6a21\u5f0f\uff0c\u8f6c\u6362\u662f\u4eceAIN0\u901a\u9053\u5f00\u59cb\u7684\uff0c\u800c\u4e14\u7ed3\u679c\u6570\u636e\u88ab\u5b58\u50a8\u5728\u6570\u636e\u7f13\u51b2\u5bc4\u5b58\u5668ADC_DBxR \u4e2d\uff08\u4f8b\u5982\uff0cCH[3:0]\u91cc\u914d\u7f6e\u4e3aAIN4\uff0c\u5219ADC_DB0R\u5b58\u653eAIN0\u7684\u8f6c\u6362\u7ed3\u679c\uff0cADC_DB1R\u5b58\u653eAIN1\u7684\u8f6c\u6362\u7ed3\u679c\uff0c\u4ee5\u6b64\u7c7b\u63a8\u3002 \uff09\uff0c\u5f53\u6700\u540e\u4e00\u4e2a\u901a\u9053(\u901a\u9053\u2018n\u2019)\u88ab\u8f6c\u6362\u5b8c\u6210\u540e\uff0cEOC(\u8f6c\u6362\u7ed3\u675f)\u6807\u5fd7\u88ab\u7f6e\u4f4d\uff0c\u5f53EOCIE \u4f4d\u5df2\u88ab\u7f6e\u4f4d\u65f6\u5c06\u4ea7\u751f\u4e00\u4e2a\u4e2d\u65ad\u3002<\/p>\n
\u53ef\u4ee5\u4ece\u7f13\u51b2\u5bc4\u5b58\u5668\u4e2d\u8bfb\u53d6\u5404\u4e2a\u901a\u9053\u7684\u8f6c\u6362\u7ed3\u679c\u503c\u3002\u5982\u679c\u67d0\u4e2a\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\u5728\u88ab\u8bfb\u8d70\u4e4b\u524d\u88ab\u8986\u76d6\uff0cOVR\u6807\u5fd7\u5c06\u7f6e1\u3002<\/p>\n
\u5728\u8f6c\u6362\u5e8f\u5217\u6b63\u5728\u8fdb\u884c\u8fc7\u7a0b\u4e2d\u4e0d\u8981\u6e05\u96f6SCAN\u4f4d\uff1b\u5355\u6b21\u626b\u63cf\u6a21\u5f0f\u53ef\u901a\u8fc7\u6e05\u96f6ADON\u4f4d\u6765\u7acb\u5373\u505c\u6b62\u3002\u4e3a\u4e86\u5f00\u542f\u4e00\u6b21\u65b0SCAN\u626b\u63cf\u8f6c\u6362\uff0c\u53ef\u4ee5\u901a\u8fc7\u5bf9ADC_CR1\u5bc4\u5b58\u5668\u7684EOC\u4f4d\u6e05\u96f6\u548cADON\u4f4d\u7f6e\u4f4d\u6765\u5b9e\u73b0\u3002<\/p>\n
\u793a\u4f8b\u7a0b\u5e8f\uff1a<\/p>\n
void adc_init(void)<\/p>\n
{<\/p>\n
GPIO_Init(GPIOC,GPIO_PIN_4,GPIO_MODE_IN_PU_NO_IT);\/\/AIN2IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
GPIO_Init(GPIOD,GPIO_PIN_3,GPIO_MODE_IN_PU_NO_IT);\/\/AIN4 IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D2);\/\/\u9884\u5206\u98912<\/p>\n
ADC1_ExternalTriggerConfig(ADC1_EXTTRIG_TIM,DISABLE);\/\/\u4e0d\u4f7f\u7528\u5916\u90e8\u89e6\u53d1<\/p>\n
ADC1_SchmittTriggerConfig(ADC1_SCHMITTTRIG_CHANNEL4,DISABLE);<\/p>\n
\/\/\u7981\u6b62AIN2 AIN4\u7684\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\uff0c\u964d\u4f4eIO\u9759\u6001\u529f\u8017<\/p>\n
\/\/PD5,PD6\u4e0a\u7684\u901a\u9053\u5982\u679c\u65bd\u5bc6\u7279\u65b9\u5f0f\u7981\u7528\u4f1a\u5bfc\u81f4\u4e32\u53e3\u65e0\u6cd5\u6536\u53d1\u6570\u636e\uff01<\/p>\n
ADC1_ConversionConfig(ADC1_CONVERSIONMODE_SINGLE,\/\/\u5355\u6b21\u8f6c\u6362<\/p>\n
ADC1_CHANNEL_4,\/\/\u914d\u7f6e\u901a\u9053\u53f7\u6700\u5927\u7684\u90a3\u4e2a<\/p>\n
ADC1_ALIGN_RIGHT);\/\/\u53f3\u5bf9\u9f50<\/p>\n
ADC1_Cmd(ENABLE);\/\/\u5f00\u542fADC<\/p>\n
ADC1_ScanModeCmd(ENABLE);\/\/\u5f00\u542f\u626b\u63cf\u6a21\u5f0f<\/p>\n
}<\/p>\n
void main( void )<\/p>\n
{<\/p>\n
u16value1=0;<\/p>\n
u16value2=0;<\/p>\n
adc_init();<\/p>\n
while(1)<\/p>\n
{<\/p>\n
ADC1_StartConversion();\/\/\u5f00\u542f\u4e00\u6b21\u8f6c\u6362<\/p>\n
while(!ADC1_GetFlagStatus(ADC1_FLAG_EOC));\/\/\u7b49\u5f85\u8f6c\u6362\u5b8c\u6210<\/p>\n
ADC1_ClearFlag(ADC1_FLAG_EOC);\/\/\u8f6f\u4ef6\u6e05\u9664<\/p>\n
value1=(u16)ADC1_GetBufferValue(ADC1_SCHMITTTRIG_CHANNEL2)\/\/\u8bfb\u53d6AIN2\u7684\u503c<\/p>\n
value2=(u16)ADC1_GetBufferValue(ADC1_SCHMITTTRIG_CHANNEL4)\/\/\u8bfb\u53d6AIN4\u7684\u503c<\/p>\n
}<\/p>\n
}<\/p>\n
l\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\uff1a<\/p>\n
\u8be5\u6a21\u5f0f\u548c\u5355\u6b21\u626b\u63cf\u6a21\u5f0f\u76f8\u8fd1\uff0c\u53ea\u662f\u6bcf\u4e00\u6b21\u5728\u6700\u540e\u901a\u9053\u8f6c\u6362\u5b8c\u6210\u65f6\uff0c\u4e00\u6b21\u65b0\u7684\u4ece\u901a\u90530\u5230\u901a\u9053n\u626b<\/p>\n
\u63cf\u8f6c\u6362\u4f1a\u81ea\u52a8\u5f00\u59cb\u3002\u5982\u679c\u67d0\u4e2a\u6570\u636e\u7f13\u5b58\u5bc4\u5b58\u5668\u5728\u88ab\u8bfb\u8d70\u4e4b\u524d\u88ab\u8986\u76d6\uff0cOVR\u6807\u5fd7\u5c06\u7f6e1\u3002\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\u662f\u5728\u5f53SCAN\u4f4d\u548cCONT\u4f4d\u5df2\u88ab\u7f6e\u65f6\uff0c\u901a\u8fc7\u7f6e\u4f4dADON\u4f4d\u6765\u542f\u52a8\u7684\u3002\u5728\u8f6c\u6362\u5e8f\u5217\u6b63\u5728\u8fdb\u884c\u8fc7\u7a0b\u4e2d\u4e0d\u8981\u6e05\u96f6SCAN\u4f4d\u3002<\/p>\n
\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\u53ef\u4ee5\u901a\u8fc7\u6e05\u96f6ADON\u4f4d\u6765\u7acb\u5373\u505c\u6b62\u3002\u53e6\u5916\u4e00\u79cd\u9009\u62e9\u5c31\u662f\u5f53\u8f6c\u6362\u8fc7\u7a0b\u4e2d\u6e05\u9664CONT\u4f4d\u90a3\u4e48\u8f6c\u6362\u4f1a\u5728\u4e0b\u4e00\u6b21\u7684\u6700\u540e\u4e00\u4e2a\u901a\u9053\u8f6c\u6362\u5b8c\u6210\u65f6\u505c\u6b62\u3002<\/p>\n
\u6ce8\u610f\uff1a\u5728\u626b\u63cf\u6a21\u5f0f\uff08\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\uff09\u4e2d\uff0c\u4e0d\u8981\u4f7f\u7528\u4f4d\u64cd\u4f5c\u6307\u4ee4(BRES)\u53bb\u6e05\u9664EOC\u6807\u5fd7\u4f4d\uff0c\u8fd9\u662f\u56e0\u4e3a\u8be5\u6307\u4ee4\u662f\u5bf9\u6574\u4e2aADC_CSR\u5bc4\u5b58\u5668\u7684\u4e00\u4e2a\u8bfb-\u4fee\u6539-\u5199\u64cd\u4f5c\u3002\u4eceCH[3:0]\u5bc4\u5b58\u5668\u4e2d\u8bfb\u53d6\u5f53\u524d\u7684\u901a\u9053\u7f16\u53f7\u548c\u5199\u56de\u8be5\u5bc4\u5b58\u5668\uff0c\u5c06\u4f1a\u6539\u53d8\u626b\u63cf\u7cfb\u5217\u7684\u6700\u540e\u901a\u9053\u7f16\u53f7\u3002\u5728\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\u4e2d\u6b63\u786e\u7684\u6e05\u9664EOC\u6807\u5fd7\u4f4d\u7684\u65b9\u6cd5\u662f \u4e2aRAM\u53d8\u91cf\u4e2d\u8f7d\u5165\u4e00\u4e2a\u5b57\u8282\u5230ADC_CSR\u5bc4\u5b58\u5668\uff0c\u8fd9\u6837\u6765\u6e05\u9664EOC\u6807\u5fd7\u4f4d\u540c\u65f6\u8fd8\u91cd\u65b0\u8f7d\u5165\u626b\u63cf\u7cfb\u5217\u65b0\u7684\u6700\u540e\u901a\u9053\u7f16\u53f7\u3002<\/p>\n
\u7b14\u8005\u5b9e\u9a8c\u53d1\u73b0\uff0c\u4f4d\u64cd\u4f5c\u6307\u4ee4\u53ea\u5728\u8fde\u7eed\u626b\u63cf\u6a21\u5f0f\u4e2d\u4f1a\u6e05\u9664CH[3:0]\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\uff0c\u4f46\u5e76\u4e0d\u5f71\u54cd\u5176\u4ed6\u503c\u3002\u56e0\u6b64\u5c06ADC_CSR\u4e2d\u7684\u503c\u8bfb\u51fa\uff0c\u518d\u5c06CH[3:0]\u4e2d\u539f\u6765\u901a\u9053\u53f7\u52a0\u5165\u8fdb\u53bb\uff0c\u6700\u540e\u91cd\u65b0\u5199\u5165ADC_CSR\u4e2d\u5373\u53ef\u3002\u5199\u6cd5\u5982\u4e0b\uff1a<\/p>\n
ADC1->CSR = (uint8_t)(ADC1->CSR &(~ADC1_FLAG_EOC)|ADC1_CHANNEL_n);<\/p>\n
\u6ce8\uff1aADC1_CHANNEL_n\u8868\u793a\u626b\u63cf\u5230\u90a3\u4e2a\u901a\u9053\u7ed3\u675f\u3002<\/p>\n
\u793a\u4f8b\u7a0b\u5e8f\uff1a<\/p>\n
void adc_init(void)<\/p>\n
{<\/p>\n
GPIO_Init(GPIOC,GPIO_PIN_4,GPIO_MODE_IN_PU_NO_IT);\/\/AIN2IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
GPIO_Init(GPIOD,GPIO_PIN_3,GPIO_MODE_IN_PU_NO_IT);\/\/AIN4 IO\u8bbe\u7f6e\u4e3a\u4e0a\u62c9\u8f93\u5165<\/p>\n
ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D2);\/\/\u9884\u5206\u98912<\/p>\n
ADC1_ExternalTriggerConfig(ADC1_EXTTRIG_TIM,DISABLE);\/\/\u4e0d\u4f7f\u7528\u5916\u90e8\u89e6\u53d1<\/p>\n
ADC1_SchmittTriggerConfig(ADC1_SCHMITTTRIG_CHANNEL4,DISABLE);<\/p>\n
\/\/\u7981\u6b62AIN2 AIN4\u7684\u65bd\u5bc6\u7279\u89e6\u53d1\u5668\uff0c\u964d\u4f4eIO\u9759\u6001\u529f\u8017<\/p>\n
\/\/PD5,PD6\u4e0a\u7684\u901a\u9053\u5982\u679c\u65bd\u5bc6\u7279\u65b9\u5f0f\u7981\u7528\u4f1a\u5bfc\u81f4\u4e32\u53e3\u65e0\u6cd5\u6536\u53d1\u6570\u636e\uff01<\/p>\n
ADC1_ConversionConfig(ADC1_CONVERSIONMODE_CONTINUOUS, \/\/\u8fde\u7eed\u8f6c\u6362<\/p>\n
ADC1_CHANNEL_4,\/\/\u914d\u7f6e\u901a\u9053\u53f7\u6700\u5927\u7684\u90a3\u4e2a<\/p>\n
ADC1_ALIGN_RIGHT);\/\/\u53f3\u5bf9\u9f50<\/p>\n
ADC1_Cmd(ENABLE);\/\/\u5f00\u542fADC<\/p>\n
ADC1_ScanModeCmd(ENABLE);\/\/\u5f00\u542f\u626b\u63cf\u6a21\u5f0f<\/p>\n
ADC1_StartConversion();\/\/\u5f00\u542f\u8f6c\u6362<\/p>\n
}<\/p>\n
void main( void )<\/p>\n
{<\/p>\n
u16value1=0;<\/p>\n
u16value2=0;<\/p>\n
adc_init();<\/p>\n
while(1)<\/p>\n
{<\/p>\n
while(!ADC1_GetFlagStatus(ADC1_FLAG_EOC));\/\/\u7b49\u5f85\u8f6c\u6362\u5b8c\u6210<\/p>\n
ADC1->CSR = (uint8_t)(ADC1->CSR &(~ADC1_FLAG_EOC)|ADC1_CHANNEL_4);\/\/\u8f6f\u4ef6\u6e05\u9664<\/p>\n
value1=(u16)ADC1_GetBufferValue(ADC1_SCHMITTTRIG_CHANNEL2)\/\/\u8bfb\u53d6AIN2\u7684\u503c<\/p>\n
value2=(u16)ADC1_GetBufferValue(ADC1_SCHMITTTRIG_CHANNEL4)\/\/\u8bfb\u53d6AIN4\u7684\u503c<\/p>\n
}<\/p>\n
}<\/p>\n
\u81f3\u6b64\uff0cSTM8\u7684ADC\u76845\u79cd\u5de5\u4f5c\u6a21\u5f0f\u5168\u90e8\u4ecb\u7ecd\u5b8c\u6bd5\u3002\u603b\u7ed3\u4e00\u4e0b\u5b66\u4e60\u7ecf\u9a8c\u5c31\u662f\u4ed4\u7ec6\u5bf9\u7167\u82af\u7247\u624b\u518c\u7f16\u5199\u7a0b\u5e8f\uff0c\u7136\u540e\u8fdb\u884c\u4eff\u771f\u8c03\u8bd5\uff0c\u89c2\u5bdf\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u7684\u53d8\u5316\uff0c\u4ece\u4e2d\u9886\u609f\u624b\u518c\u4e2d\u7684\u610f\u601d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
STM8\u7684ADC\u7684\u4e94\u79cd\u5de5\u4f5c\u6a21\u5f0f STM8\u7684ADC\u662f10\u4f4d\u7684\u9010\u6b21\u6bd4\u8f83\u578b\u6a21\u62df\u6570\u5b57\u8f6c\u6362\u5668\uff0c\u591a\u8fbe16\u4e2a\u591a\u529f\u80fd\u7684\u8f93\u5165\u901a\u9053 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1279","post","type-post","status-publish","format-standard","hentry","category-stm8"],"_links":{"self":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/1279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1279"}],"version-history":[{"count":1,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/1279\/revisions"}],"predecessor-version":[{"id":1280,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=\/wp\/v2\/posts\/1279\/revisions\/1280"}],"wp:attachment":[{"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kumouse.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}