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Cinterion

Java Terminal Hardware Interface Description

8.5 Configuring GPIO Directions

 PLS62T-W_HID_v01 2018-06-20

Confidential / Prelimenary

Page 82 of 91

8.5.1 Configuration using I

C Interface

Please refer to Section 8.4 for more information on how to configure the watchdog via I

C in-

terface.

Figure 21 explains the configuration steps required to set the Java Terminal‘s GPIO7 signal di-

rection to OUTPUT (default direction is INPUT):

Figure 21: Setting GPIO direction to OUTPUT via I

C interface

Figure 22 shows the configuration steps required to re-set the Java Terminal‘s GPIO7 signal

direction to INPUT:

Figure 22: Setting GPIO direction to INPUT via I

C interface

For more information on the AT commands mentioned in the above figures see also [1].

Note: When using a Java MIDlet to set GPIO directions using the I

C interface, please allow

for a guard time of at least 500ms between two I

C commands.

GPIO connector Java module

Level shifter

GPIO7

Set level shifter to OUTPUT using AT^SSPI and

a specific read/write protocol over I

C interface *

Level shifter

GPIO7

Set GPIO7 at Java module to OUTPUT with

GPIO command AT^SCPIN=1,6,1

Now, IO state can be set with AT^SSIO=6,0

Steps:

Voltage level conversion

Java Terminal

= INPUT

= OUTPUT

* See Section 8.4.1.4 for configuration details.

GPIO connector Java module

Level shifter

GPIO7

Level shifter

GPIO7

Voltage level conversion

Java Terminal

= INPUT

= OUTPUT

Set GPIO7 at Java module to INPUT with

GPIO command AT^SCPIN=1,6,0

Set level shifter to INPUT using AT^SSPI and

a specific read/write protocol over I

C interface *

Now, GPIO7 can be read out with AT^SGIO=6

Steps:

Brand	Gemalto
Model	Cinterion PLS62T-W USB
Category	Recording Equipment
Language	English

Gemalto Cinterion PLS62T-W USB User Manual

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Gemalto Cinterion PLS62T-W USB Specifications