UM0759

General description

Doc ID 16058 Rev 2

13/26

3.3

Evaluation GUI description

The L9958 GUI consists of five fields, three control fields: SPI menu select, motor control

command field, function configuration field; two indication field: SPI diagnosis indicator and

EN, DI, DIR indicator.

Figure 11.

L9958 GUI general view and the default value

3.3.1

RUN and STOP L9958 GUI

The L9958 GUI was automatically running when opened. At this time, the default value was

shown as Figure 11.

User can stop and exit the GUI via click “Exit” key:

or press “ESC” key on

keypad.

3.3.2

Configure L9958 GUI

SPI menu select field

This field was used to select SPI command. The SPI command was sent to L9958 by ST10

via SPI. The SPI configuration protocol was shown as below, more details, please refer to

L9958.

Table 5.

SPI configuration protocol

Bit

Name

Description

Config. value

after reset

0 - LSB

RES

Reserved

—

1

DR

Diagnostic Reset Bit

0

2

CL_1

Bit1 for Regulation Current Level

0