未检测到LIS3DH惯性中断/唤醒

由于在平坦表面上移动传感器，我无法检测到LIS3DH加速度计的内部中断。传感器使用I2C与Arduino Uno连接。我正在使用AN3308的第6.3.1节中的示例，LIS3DH应用笔记。我可以成功读取加速度值。我也尝试检查两个中断端口，int 1和int 2。



请参阅下面附带的Arduino代码。


＆amp; sharpinclude＆lt; Wire.h＆gt;


const int LIS3DH_ADDR = 0x18;
int pin = 13;
int int1Pin = 2;
int int2Pin = 3;


/ * I2C通信设置------------------------------------------- -------------- * /
unsigned int readRegister（byte reg）{
Wire.beginTransmission（LIS3DH_ADDR）;
Wire.write（REG）;
Wire.endTransmission（）;

Wire.requestFrom（LIS3DH_ADDR，1）;
return Wire.read（）;
}


void writeRegister（byte reg，byte data）{
Wire.beginTransmission（LIS3DH_ADDR）;
Wire.write（REG）;
Wire.write（数据）;
Wire.endTransmission（）;
}


/ *初始化主处理器中的加速度计。 ---------------------------------- * /
//初始化程序启动后只需要执行一次。
void init_ACC（void）
{
//控制寄存器的配置
writeRegister（0x20,0xA7）; //将A7h写入CTRL_REG1; //使用ODR = 100Hz正常模式打开传感器。
writeRegister（0x21,0x00）; //将00h写入CTRL_REG2; //禁用高通滤波器（HPF）
writeRegister（0x22,0x40）; //将40h写入CTRL_REG3; // ACC AOI1中断信号被路由到INT1引脚。
writeRegister（0x23,0x00）; //将00h写入CTRL_REG4; //满刻度= +/- 2克
writeRegister（0x24,0x00）; //将00h写入CTRL_REG5; // 默认值。 INT1引脚上的中断信号未锁存。
//用户无需读取INT1_SRC寄存器即可清除中断信号。
//唤醒和静止检测的配置
writeRegister（0x32,0x10）; //将10h写入INT1_THS; //阈值（THS）= 16LSBs * 15.625mg / LSB = 250mg。
writeRegister（0x33,0x00）; //将33h写入INT1_DURAtiON; //持续时间= 1LSBs *（1 / 10Hz）= 0.1s。
writeRegister（0x30,0x0A）; //将0Ah写入INT1_CFG; //启用XLIE，YLIE中断生成，OR逻辑。

}
void setup（）{
Wire.begin（）;
Serial.begin（9600）;
int res = readRegister（0x0F）; //我是谁
Serial.println（RES）;
pinMode（引脚，OUTPUT）; //将数字引脚13设置为输出
pinMode（int1Pin，INPUT）; //将数字引脚2设置为输入
pinMode（int2Pin，INPUT）; //将数字引脚2设置为输入
}


void loop（）{
//读取两个中断引脚
int int1 = digitalRead（int1Pin）;
int int2 = digitalRead（int2Pin）;
Serial.print（INT1）;
Serial.print（ ''， ''）;
Serial.println（INT2）;

if（digitalRead（int1Pin）== 0＆amp;＆amp; digitalRead（int2Pin）== 0）{
//如果两者都是低写
writeRegister（0x30,0x0A）;
}
其他{
digitalWrite（pin，HIGH）;
int intEvent = readRegister（0x31）;
Serial.println（intEvent）;
延迟（2000）;
}

延迟（0）;
}
#lis3dh-interrupt #accelerometer＃lis3dh＃lis3dh-interrupt



以下为原文




I am unable to detect an interial interrupt from the LIS3DH accelerometer as a result of moving the sensor on a flat surface. The sensor is interfaced with an Arduino Uno using I2C. I am using the example in section 6.3.1 of AN3308, LIS3DH application notes. I can successfully read acceleration values. I also tried checking both interrupt ports, int 1 and int 2.



Please see attached Arduino code below.


&sharpinclude


const int LIS3DH_ADDR = 0x18;
int pin = 13;
int int1Pin = 2;
int int2Pin = 3;


/* I2C Communication Set-up ---------------------------------------------------------*/
unsigned int readRegister(byte reg) {
  Wire.beginTransmission(LIS3DH_ADDR);
  Wire.write(reg);
  Wire.endTransmission();
   
  Wire.requestFrom(LIS3DH_ADDR, 1);
  return Wire.read();
}


void writeRegister(byte reg, byte data) {
  Wire.beginTransmission(LIS3DH_ADDR);
  Wire.write(reg);
  Wire.write(data);
  Wire.endTransmission();
}


/* Initialize accelerometer in the host processor. ----------------------------------*/
//It only needs to be executed one time after power up in initialization routine.
void init_ACC(void)
{
    // configurations for control registers
    writeRegister(0x20, 0xA7); //Write A7h into CTRL_REG1;      // Turn on the sensor with ODR = 100Hz normal mode.
    writeRegister(0x21, 0x00); //Write 00h into CTRL_REG2;      // High-pass filter (HPF) disabled  
    writeRegister(0x22, 0x40); //Write 40h into CTRL_REG3;      // ACC AOI1 interrupt signal is routed to INT1 pin.
    writeRegister(0x23, 0x00); //Write 00h into CTRL_REG4;      // Full Scale = +/-2 g
    writeRegister(0x24, 0x00); //Write 00h into CTRL_REG5;      // Default value. Interrupt signals on INT1 pin is not latched.  
                                                                //Users don�t need to read the INT1_SRC register to clear the interrupt signal.
    // configurations for wakeup and motionless detection
    writeRegister(0x32, 0x10); //Write 10h into INT1_THS;          // Threshold (THS) = 16LSBs * 15.625mg/LSB = 250mg.
    writeRegister(0x33, 0x00); //Write 33h into INT1_DURATION;     // Duration = 1LSBs * (1/10Hz) = 0.1s.
    writeRegister(0x30, 0x0A); //Write 0Ah into INT1_CFG;          // Enable XLIE, YLIE interrupt generation, OR logic.
  
}
void setup() {
  Wire.begin();
  Serial.begin(9600);
  int res = readRegister(0x0F); //WHO_AM_I
  Serial.println(res);
  pinMode(pin, OUTPUT);      // sets the digital pin 13 as output
  pinMode(int1Pin, INPUT);      // sets the digital pin 2 as input
  pinMode(int2Pin, INPUT);      // sets the digital pin 2 as input
}


void loop() {
  //Read both interrupt pins
  int int1 = digitalRead(int1Pin);
  int int2 = digitalRead(int2Pin);
  Serial.print(int1);
  Serial.print('','');
  Serial.println(int2);
   
if (digitalRead(int1Pin) == 0 && digitalRead(int2Pin) == 0){
   //if both are low write
   writeRegister(0x30, 0x0A);
}
else {
   digitalWrite(pin, HIGH);
   int intEvent = readRegister(0x31);
   Serial.println(intEvent);
   delay(2000);
}
   
delay(0);
}  
#lis3dh-interrupt #accelerometer #lis3dh #lis3dh-interrupt

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