Ublox USB-ANNA-B4, Руководство пользователя

Страница: 8 / 11

UBX-22008565 - R01 Interfaces and peripherals Page 8 of 11
C1-Public
3 Interfaces and peripherals
3.1 Buttons and LEDs
Figure 4: Position of the push buttons and LEDs on the evaluation board
Annotation Function Description
RST Reset
button Connected directly to the ANNA RESET_N pin.
SW2 SWITCH_2 With u-connectXpress this button can be used to reset UART settings.
☞
See also the ANNA-B412 data sheet [1] .
Table 2: USB-ANNA-B4 button
Annotation Function Description
D2 Power Good Led Indicates when 3V3 voltage is applied
D3 RGB LED Connected to the ANNA RED (GPIO_31), GREEN (GPIO_32) and BLUE (GPIO_33) pins.
The RGB LED shows the status for u-connectXpress. See also the u-connectXpress
user guide
[5] for details.
☞
See also the ANNA-B412 data sheet [1] .
Table 3: USB-ANNA-B4 LED indicators
3.2 USB to UART interface
A serial COM port is available if the USB board is connected to a PC using the USB connector J1.
3.3 I2C temperature sensor
USB-ANNA-B4 has an LM75B temperature sensor mounted on the PCB. This sensor measures the
environmental temperature and can be addressed using the I2C address 0x48.