FIFO Mode of LIS2DE12

Fahad Mirza · ‎2017-10-20

Posted on October 21, 2017 at 00:43

I am trying read the X, Y, Z values in FIFO mode. I don't understand the reading procedure.

Do I need to start reading from FIFO_READ_START and continue reading 6 bytes and then initiate another reading from FIFO_READ_START?

or

Do I need to read

OUT_X_H (2bytes),

OUT_Y_H

(2bytes)

and

OUT_Z_H

(2bytes) and continue till I read all 32 levels?

Miroslav BATEK · ‎2017-10-23

Posted on October 23, 2017 at 10:35

Basically both ways are possible. You can read the FIFO content in several 6-bytes read transaction starting from FIFO_READ_START (28h) or you can repeat reading of X, Y, Z separately data in 2-bytes read transaction. There is also possibility to read the whole FIFO in one 192-bytes read transaction.

View solution in original post

Miroslav BATEK · ‎2017-10-23

Posted on October 23, 2017 at 10:35

Basically both ways are possible. You can read the FIFO content in several 6-bytes read transaction starting from FIFO_READ_START (28h) or you can repeat reading of X, Y, Z separately data in 2-bytes read transaction. There is also possibility to read the whole FIFO in one 192-bytes read transaction.

Fahad Mirza · ‎2017-11-08

Posted on November 08, 2017 at 20:39

Hello Miroslav,

I have one confusion. LIS2DE12 provides 8-bit value. So why do I need to read two bytes? Isn't it supposed to be 1 byte for a single axis, 3 bytes for a single FIFO and 96 bytes for whole FIFO?

Miroslav BATEK · ‎2017-11-10

Posted on November 10, 2017 at 10:52

See

https://community.st.com/0D50X00009XkXeoSAF