请问一下我采集传感器信息，在AD值在LCD显示和通过串口查看，结果会不一样的？如AD显示为2203，串口才输出1987？

轩辕zh

仿照正点原子的ADC实验，请问一下我采集传感器信息，在AD值在LCD显示和通过串口查看，结果会不一样的？如AD显示为2203，串口才输出1987？（串口输出代码）

[mw_shl_code=c,true]int main(void) { u16 adcx; float temp; u16 adcx1; float temp1; float temperature1; float temperature2; u16 te1; u16 te2; delay_init(); //???±?????????? NVIC_Configuration(); //?è??NVIC????·?×é2:2??????????????2???ì???????? uart_init(9600); //?®??????????9600 LED_Init(); //LED?????????? Adc_Init(); //ADC?????? while(1) { //ADC1 ?????¨??????PA1 adcx=Get_Adc_Average(ADC_Channel_1,10); temperature1=(float)((adcx-1833.632)/6.842); temperature1=temperature1*1000; te1=temperature1; printf("temperature1:%d",te1); //?????????? ?¨?à????1000?© printf("C\r\n"); printf("ADC_CH1_VAL:%d",Get_Adc_Average(ADC_Channel_1,10)); //?????????? printf("L\r\n"); temp=(float)adcx*(3.3/4096); temp=temp*1000; adcx=temp; printf("ADC_CH1_VOL:%d",adcx); //???????????¨?à????1000?© printf("V\r\n"); //ADC1 ?????¨??????PA2 adcx1=Get_Adc_Average(ADC_Channel_2,10); temperature2=(float)((adcx1-1833.632)/6.842); temperature2=temperature2*1000; te2=temperature2; printf("temperature2:%d",te2); printf("C\r\n"); printf("ADC_CH2_VAL:%d",Get_Adc_Average(ADC_Channel_2,10)); printf("L\r\n"); temp1=(float)adcx1*(3.3/4096); temp1=temp1*1000; adcx1=temp1; printf("ADC_CH2_VOL:%d",adcx1); printf("V\r\n"); LED0=!LED0; delay_ms(250); }[/mw_shl_code]

LCD显示AD代码

[mw_shl_code=c,true]int main(void) { u16 adcx; float temp; u16 adcx1; float temp1; float temperature1; float temperature2; u16 te1; u16 te2; delay_init(); //???±?????????? NVIC_Configuration(); //?è??NVIC????·?×é2:2??????????????2???ì???????? uart_init(9600); //?®??????????9600 LED_Init(); //LED?????????? LCD_Init(); Adc_Init(); //ADC?????? POINT_COLOR=RED;//?è??×??????ì?? LCD_ShowString(60,50,200,16,16,"WarShip STM32"); LCD_ShowString(60,70,200,16,16,"ADC TEST"); LCD_ShowString(60,90,200,16,16,"ATOM@ALIENTEK"); LCD_ShowString(60,110,200,16,16,"2012/9/7"); //?????á?????? POINT_COLOR=BLUE;//?è??×????????? LCD_ShowString(60,130,200,16,16,"ADC_CH1_VAL:"); LCD_ShowString(60,150,200,16,16,"ADC_CH1_VOL:0.000V"); LCD_ShowString(60,170,200,16,16,"temperature:00.000C"); //?????á?????? POINT_COLOR=RED;//?è??×??????ì?? LCD_ShowString(60,190,200,16,16,"ADC_CH2_VAL:"); LCD_ShowString(60,210,200,16,16,"ADC_CH2_VOL:0.000V"); LCD_ShowString(60,230,200,16,16,"temperature:00.000C"); while(1) { POINT_COLOR=BLUE;//?è??×????????? adcx=Get_Adc_Average(ADC_Channel_1,10); temperature1=(float)((adcx-1833.632)/6.842); te1=temperature1; LCD_ShowxNum(156,170,te1,2,16,0);//?????????? temperature1-=te1; temperature1*=1000; LCD_ShowxNum(180,170,temperature1,1,16,0X80); LCD_ShowxNum(156,130,adcx,4,16,0);//????ADC???? temp=(float)adcx*(3.3/4096); adcx=temp; LCD_ShowxNum(156,150,adcx,1,16,0);//?????????? temp-=adcx; temp*=1000; LCD_ShowxNum(172,150,temp,3,16,0X80); POINT_COLOR=RED;//?è??×??????ì?? adcx1=Get_Adc_Average(ADC_Channel_2,10); temperature2=(float)((adcx1-1833.632)/6.842); te2=temperature2; LCD_ShowxNum(156,230,te2,2,16,0);//?????????? temperature2-=te2; temperature2*=1000; LCD_ShowxNum(180,230,temperature2,1,16,0X80); LCD_ShowxNum(156,190,adcx1,4,16,0);//????ADC???? temp1=(float)adcx1*(3.3/4096); adcx1=temp1; LCD_ShowxNum(156,210,adcx1,1,16,0);//?????????? temp1-=adcx1; temp1*=1000; LCD_ShowxNum(172,210,temp1,3,16,0X80); LED0=!LED0; delay_ms(250); } } [/mw_shl_code]

正点原子

仿真跟踪一下代码,立马知道问题所在.
至于乱码问题,是编码格式的问题,选择GB2312编码就OK了.

轩辕zh

还有想问一下，怎么样Keil4复制到别处的代码不会变成乱码？

轩辕zh

我又做了下实验，发现打开并使用LCD对ADC的影响很大的，在使用LCD的ADC采集，与单纯使用串口ADC采集的区别不同，这是为什么呢？


打开LCD,并用串口传数据

没打开LCD,单纯用串口传数据