Ram Library Mode; Waveform Library Effects List - Texas Instruments DRV2604EVM-CT User Manual

DRV2604 Demonstration Program
2.2.6 Mode 0 – Auto-Calibration
Auto-calibration is a DRV2604-embedded routine that detects the characteristics and behavior of an
actuator and adjusts the drive waveform automatically.
Perform auto-calibration using the following steps:
1. Connect an actuator to the green output terminal (OUT) or use the on-board actuators
2. For an ERM actuator, run the ERM auto-calibration by pressing button B1
3. For an LRA actuator, run the LRA auto-calibration by pressing button B2
4. Read the auto-calibration register values using I
5. Test using buttons B3 and B4
2.3

RAM Library Mode

Access the RAM library effects by holding the + button until the mode LEDs flash and the colored LEDs
flash ONCE.
Once in Library Mode the DRV2604 loaded RAM effects can be accessed in sequential order. 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.
The equations for calculating the Mode and Button of an effect are:
Mode = RoundDown( [Effect No.] / 4 )
Button = ([Effect No.] – 1) % 4 + 1
% - modulo operator
To change between ERM and LRA:
1. Select mode 31 (11111'b) using the + or – buttons.
• B1 – Press to select ERM
• B2 – Press to select LRA
2. Then use the RAM effects as described above.
2.4

Waveform Library Effects List

Below is a description of the waveforms embedded in the DRV2604.
Effect ID Waveform Name
1 Strong Click
2 Medium Click
3 Light Click
4 Tick
5 Bump
6 Strong Double Click
7 Medium Double Click
8 Light Double Click
9 Strong Triple Click
10 Buzz
11 Ramp Up
12 Ramp Down
13 Click + Bounce
14 Ramp Up + Click
15 Gallop Alert
16 Pulsing Alert
10
DRV2604 ERM, LRA Haptic Driver Evaluation Kit
2
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Copyright © 2013, Texas Instruments Incorporated
www.ti.com
SLOU355 – March 2013
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