DRV2667 Embedded Software
2.3
RAM Library Mode
The second set of modes is called Library Mode, which implements a haptic effect library using the
DRV2667 RAM. The effects in RAM are accessed in sequential order using the capacitive touch buttons.
For example, with all Mode LEDs off, B1 is waveform 1, B2 is waveform 2, and so on. Then when Mode
LED M0 is on, B1 is waveform 5, B2 is waveform 6, and so on. Enter Library Mode and access the
DRV2667 RAM Library using the following steps:
1. Press and hold the increment mode button ("+") for approximately 3 seconds until the mode LEDs flash
and the colored LEDs flash once.
2. Now use the "+" and "–" buttons to select the mode and press buttons B1–B4 to play an effect.
The equations for calculating the Mode and Button of an effect are:
Mode = RoundDown( [Effect No.] / 4 )
(1)
Button = ([Effect No.] – 1) % 4 + 1
(2)
% – modulo operator
See
for a list effects stored in the DRV2667 RAM.
2.4
RAM Library Effects List
is a description of the effects stored in the DRV2667 RAM.
Table 4. DRV2667EVM-CT Library Modes
Effect ID
Waveform Name
1
Click150
2
Click200
3
Click250
4
Click300
5
Bounce100
6
Bounce150
7
Bounce200
8
Bounce250
9
Transition100
10
Transition150
11
Transition200
12
Transistion250
13
Click + Bounce
14
Tran Click
15
Flyby
16
Long Click + Bounce
17
Alert 1
18
Alert 2
19
Alert 3
20
Alert 4
2.5
Design & Test Mode
Design & Test contains modes that are used to design, test, and characterize the DRV2667. To access
Design & Test modes use the following instructions:
1. Press and hold the increment mode button ("+") for approximately 3 seconds until the mode LEDs flash
and the colored LEDs flash once.
2. Press and hold the increment mode button ("+") one more time until the mode LEDs flash and the
colored LEDs flash twice.
3. Select from the Design & Test modes using the "+" and "–" buttons.
14
DRV2667 Evaluation Module
SLOU323 – June 2013
Copyright © 2013, Texas Instruments Incorporated