STEVAL-MKI105V1 STMicroelectronics, STEVAL-MKI105V1 Datasheet - Page 15

• Manufacturer Part Number: STEVAL-MKI105V1
• Description: Power Management Modules & Development Tools LIS3DH Adapter Board Standard DIL 24
• Manufacturer: STMicroelectronics
• Type: Other Power Managementr

Specifications of STEVAL-MKI105V1

• Product: Power Management Development Tools
• For Use With/related Products: MEMS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

UM0979
Table 3.
Note:
Command
*PDOFF
*HPOFF
*STOFF
*FSOFF
*HPON
*FSON
*STON
Supported commands list (continued)
IR: interrupt byte; FC: FIFO control register; FS: FIFO source register.
Set demonstration board
The command *setdbxxxvy selects the part of the firmware able to handle the adapter board
sensor connected to the board. e.g., in order to select the firmware for the LIS3DH the
command must be: setdb105V1. The D6 LED (green) is automatically switched on.
Start command
The *start command initiates the continuous data acquisition. When this command is sent to
the device, it returns a string of bytes (plus carriage return and line feed) similar to “st OUT1
OUT2 OUT3 IR BT”.
The first two bytes are always the ASCII char “s” and “t” which correspond to the
hexadecimal values {73h 74h}.
OUT1, OUT2, and OUT3 are the bytes that contain the values measured at device outputs;
if the output data is represented on more than 8 bits, OUT1, OUT2, and OUT3 are split into
two bytes: high byte (e.g.: “XH”) and low byte (e.g.: “XL”).
IR contains the interrupt bytes and BT contains the bytes that describe the state of the
buttons integrated on the board.
Specifically, bit#0 of the “BT” data corresponds to the status of the SW1 button on the
demonstration kit board: it is set to 1 when the SW1 is pressed (otherwise 0). Bit#1 has the
same behavior but is dedicated to the SW2.
Before sending the *start command, the device must be out from 3-state and some registers
must be configured according to user needs, therefore, *start must be preceded by a *zoff
and some “Register Write” commands.
Table 4
sent.
shows the format of the string returned for each device when a *start command is
Clears high-pass filter pin
Sets high-pass filter pin
Clears power-down pin
Clears full scale pin
Clears self test pin
Sets full scale pin
Sets self test pin
Description
Doc ID 17768 Rev 1
Returned value
Supported commands
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