What are the differences between the L3GD20 FIFO and the LIS3DH accelerometer FIFO?

[Nathalie MAGNIEZ]

Posted on September 07, 2013 at 18:15

What are the differences between the L3GD20 FIFO and the LIS3DH accelerometer FIFO?

#lis3dh #l3gd20

[Thiago REIS]

Posted on September 09, 2013 at 18:48

Hello Naue,

Firstly the L3GD20 FIFO has 16-bit data stored rather than 10-bit data in accelerometers. Secondly, the L3GD20 FIFO has one more trigger mode which is bypass-to-stream mode. Thirdly, the L3GD20 FIFO can give FIFO empty interrupt.

For more information, please visit

http://www.st.com/mems

Thank you,

Thiago Reis

From: naue

Posted: Saturday, September 07, 2013 6:15 PM

Subject: What are the differences between the L3GD20 FIFO and the LIS3DH accelerometer FIFO?

[mehdi]

Posted on September 24, 2014 at 09:52

Hello, 

Iwant to use the L3G4200D in FIFO mode and get the interrupt 2 with a configurable watermark. This is my config:

  //set ODR (turn ON device)

  if(L3G4200D_SetODR(L3G4200D_ODR_100Hz_BW_12_5) == FALSE) 

return FALSE;

//set PowerMode 

  if(L3G4200D_SetMode(L3G4200D_NORMAL) == FALSE)

return FALSE;

//set fullscale

  if(L3G4200D_SetFullScale(FULLSCALE_250)== FALSE) 

return FALSE;

  //set axis Enable

  if(L3G4200D_SetAxis(X_ENABLE | Y_ENABLE | Z_ENABLE)== FALSE)

return FALSE;

  //set watermark 

  if(L3G4200D_SetWaterMark(20)== FALSE)

return FALSE;

  //FIFO configuration

if(L3G4200D_FIFOModeEnable(FIFO_MODE)== FALSE)

return FALSE;

  //enable watermark interrupt on interrupt2

  //when the fifo contains more than 32 elements, the interrupt raises  

  if(L3G4200D_SetInt2Pin(WTM_ON_INT2_ENABLE)== FALSE)

return FALSE;

//interrupt pin mode configuration: PUSH_PULL or OPEN_DRAIN

  if(L3G4200D_SetIntPinMode(PUSH_PULL)== FALSE) 

return FALSE;

//

  //configure interrupt 1

  if(L3G4200D_SetInt1Pin(I1_ON_PIN_INT1_DISABLE)== FALSE)

return FALSE;

  //X and Y high threshold interrutps

  if(L3G4200D_SetIntConfiguration(INT1_OR | INT1_ZHIE_DISABLE | INT1_XHIE_DISABLE)== FALSE)

return FALSE;

  //interrupt latch disable

  if(L3G4200D_Int1LatchEnable(L3G4200D_MEMS_DISABLE)== FALSE)

return FALSE; 

I never receive the interrupt 2 (FIFO Interrupt), is there any configuration missing ?