STM CircleOS forum / MEMS_ReadId

JVidal · 2008-03-28 11:05:05

Hello,

In the source of CircleOS, in mems.c, in , I see that MEMS_Init contains :
if( MEMS_ReadID() != 0x3A )

I'm struggling a bit to understand where the value "0x3A" comes from. How was it determined that the test should use that particular value ?

Thanks for your help,
Jerome

lionel · 2008-03-28 12:10:06

extract from page 22 in the MEMS datasheet:

WHO_AM_I (0Fh)
[...]
Addressing this register the physical address of the device is returned.
For LIS3LV02DL the physical address assigned in factory is $1.

Lionel

softy · 2012-12-07 11:16:25

what is this "extract from page 22 in the MEMS datasheet"? you mean page 22 of Datasheet for LIS3LV02DL ?
rgds,
Softy

Last edited by softy (2012-12-07 11:52:59)

VincentC · 2012-12-07 12:33:54

Yes, although in the latest version of this doc, it's now page 22:
http://www.st.com/internet/com/TECHNICA … 091417.pdf

# 1 2008-03-28 11:05:05 MEMS_ReadId

MEMS_ReadId

# 2 2008-03-28 12:10:06 MEMS_ReadId

Re: MEMS_ReadId

# 3 2012-12-07 11:16:25 MEMS_ReadId

Re: MEMS_ReadId

# 4 2012-12-07 12:33:54 MEMS_ReadId

Re: MEMS_ReadId

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