[TM4C123单片机实战] 两路ADC检测,短路报警

如果最终得到的数据是两路数据的差值, 我们可以采用ADC的 Difference 工作模式

#include <stdbool.h>#include <stdint.h>#include "inc/hw_memmap.h"#include "driverlib/adc.h"#include "driverlib/gpio.h"#include "driverlib/pin_map.h"#include "driverlib/sysctl.h"#include "user/LCDDriver.h"#define abs(x) (((x)<0)? -(x):(x))uint32_t pui32ADC0Value[1]={0};//这是我们的数据缓存, ADC采样数据存储在这里void adcConfig(){SysCtlPeripheralEnable(SYSCTL_PERIPH_ADC1);SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOE);SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);GPIOPinTypeGPIOOutput(GPIO_PORTD_BASE, GPIO_PIN_1);GPIOPinTypeADC(GPIO_PORTE_BASE, GPIO_PIN_3 | GPIO_PIN_2);//初始化ADC所使用的GPIOADCSequenceConfigure(ADC1_BASE, 3, ADC_TRIGGER_PROCESSOR, 0);ADCSequenceStepConfigure(ADC1_BASE, 3, 0, ADC_CTL_D | ADC_CTL_CH0 |ADC_CTL_IE | ADC_CTL_END);//这里我们选择了两路差工作模式ADC_CTL_DADCSequenceEnable(ADC1_BASE, 3);ADCIntClear(ADC1_BASE, 3);}//使能bool isRisk(){//数据采集程序GPIOPinWrite(GPIO_PORTD_BASE, GPIO_PIN_1, 255);ADCProcessorTrigger(ADC1_BASE, 3);while(!ADCIntStatus(ADC1_BASE, 3, false));ADCIntClear(ADC1_BASE, 3);ADCSequenceDataGet(ADC1_BASE, 3, pui32ADC0Value);//AIN0(PE3) – AIN1(PE2)LCD_Draw_Num(pui32ADC0Value[0],0,7,0,false);LCD_Draw_Line_Clear(6,false);if(pui32ADC0Value[0] > 500) return true;else return false;}关于ADc的引脚, 参考reference

关于ADC的模式:

参考reference

，一直开到梦的尽头。你曾经说，