Programmable leds and switch, Buzzer, Coin” battery – ThingMagic Mercury xPRESS Platform v1.7 User Manual
Page 115: Buzzer “coin” battery
A D I V I S I O N O F T R I M B L E
Hardware Reference Guide
115
unanticipated results might occur if commands from both interfaces are not carefully
coordinated.
Programmable LEDs and Switch
Three programmable LEDs (green - LED0, yellow - LED1, blue - LED2) are connected to
high drive IO pins of the MCU. These can be used as indicators for user applications.
A push-button switch, “User Switch”, is provided to control user applications.
Their functionality when the xPRESS board is running the RFID Sensor application is
explained in the
chapter.
Buzzer
A piezo buzzer on the main board is connected to a programmable output pin on the
MCU. The buzzer is driven from a square wave with a frequency between 1 kHz and 6
kHz. The volume varies with frequency, putting out 90 dB at 4 kHz and 60 dB at 2 kHz.
“Coin” battery