MAX11811TEVS View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX11811TEVS

MAX11811 Touch Evaluation System (TEVS)

Maxim Integrated 

MAX11811 Touch Evaluation System (TEVS)

MAX11811 TEVS GUI Description

After successful installation of the driver, connect the

TEVS to the PC using the USB cable. Start the GUI by

double-clicking on the MAX118xxEVS <version>.exe

file. Following a successful communication link, the GUI

indicates what it has found at two locations on the GUI:

1) The window caption:

MAX11811 4-wire Advanced Touch Screen

Controller

2) The status bar:

TSC Communication: I2C TSC device found

I2C Addr. = 0x96

USB comm. successful

Registers Tab

The Registers tab shown in Figure 6 displays a

successful communication link with a TSC device. This

tab displays the registers related to X, Y, Z1, and Z2

measurement of the device. The user can manipulate the

register values by changing the binary bit patterns on the

right or the hex values on the left. Refer to the MAX11811

IC data sheet for details on the registers.

Upon startup, factory-default values of the TSC registers

from the MAX11810-11_init.ini files are loaded onto the

GUI and then written into the TSC.

The user can change the factory-default values in the

MAX11810-11_init.ini file, with new values entered by

the user on the GUI by selecting the File | Save option

from the menu bar. This overwrites the factory-default

values in the MAX11810-11_init.ini file. The user also has

the option to save the register values on the GUI screen

under a different name by selecting the File | Save As

option, and to open and load a previously saved file by

selecting the File | Open and Load option.

The GUI automatically writes to the TSC when a new

.ini file is opened and loaded. However, when the user

individually manipulates bits on the GUI screen, it must

be followed by pressing the Write Registers button. The

Read Registers button reads all the registers from the

TSC and displays it in the binary and hex fields.

At any time, the computer mouse can be scrolled over

a checkbox (the bit indicators) and the status with a

description of the bit is indicated by the tool tip.

Note: Any changes on the GUI must be followed by a

press of the Write Registers button for the value to be

loaded into the TSC.

Haptic Registers Tab

The Haptic Registers tab holds registers for configuring

the haptic patterns (refer to the MAX11811 IC data sheet

for details on the registers). The user can manipulate

the values through the drop-down combo boxes and the

various checkboxes.

As in the Registers tab, the factory-default values from

the MAX11810-11_init.ini files are loaded onto the GUI

and then written into the TSC at startup.

The quickest way to test the haptic patterns is to use the

preprogrammed set of values given in the drop-down

combo boxes. The drop-down combo box in green is for

the linear resonant actuator (LRA) motor and the drop-

down combo box in yellow is for the eccentric rotating

mass (ERM) motor (see Figure 7).

The user also has the ability to Enable Haptics (check-

box) and Generate Haptic (button). A delay can also be

entered in milliseconds for the haptic to be generated

through the Haptic Delay edit box.

Any manual changes made to the registers should be

followed by pressing the Write Registers button for the

value to be sent to the TSC.

As in the Registers tab, the user can change the factory-

default values in the MAX11810-11_init.ini file, with new

values entered on the GUI using the File | Save option

from the menu bar. This overwrites the factory-default

values in the MAX11810-11_init.ini file. The user also has

the option to save the register values on the GUI screen

under a different name using the File | Save As option,

and to open and load a previously saved file by using the

File | Open and Load option.

Touch Data Tab

The Touch Data tab displays the user inputs on

the touch panel on a screen. The user can make

various selections to display a combination of X, Y, Z1,

and Z2 data along with their processed/mathematical

interpretation.

As in the Haptic Registers tab, the user can Enable

Haptics (checkbox) and also apply a delay in

milliseconds through the Haptic Delay edit box. The

drop-down combo box with preprogrammed haptic

patterns is also available in this tab for both the LRA and

ERM motor.

The TSC has two modes of operation, direct and autono-

mous. Refer to the MAX11811 IC data sheet for more

details.

Direct Mode: Direct mode can be selected in the

Registers tab by selecting it in the Operating Mode

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