User's Manual

ACR122L
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USB
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ACS
Example 1: To read the existing LED State.
// Assume both LED_0 and LED_1 are OFF initially //
// Not link to the buzzer //
APDU = “FF 00 40 00 04 00 00 00 00”
Response = “90 00”. LED_0 and LED_1 LEDs are OFF.
Example 2: To turn on LED_0 and LED_1
// Assume both LED_0 and LED_1 are OFF initially //
// Not link to the buzzer //
APDU = “FF 00 40 0F 04 00 00 00 00”
Response = “90 03”. LED_0 and LED_1 are ON,
#To turn off both LED_0 and LED_1, APDU = “FF 00 40 0C 04 00 00 00 00”
Example 3: To turn off the LED_1 only, and left the LED_0 unchanged.
// Assume both LED_0 and LED_1 are ON initially //
// Not link to the buzzer //
APDU = “FF 00 40 04 04 00 00 00 00”
Response = “90 02”. LED_0 is not changed (ON); LED_1 is OFF,
LED_1 On
LED_1 Off
LED_0 On
LED_0 Off