NB-IoT Module Series
BC65-TE-B User Guide
BC65-TE-B_User_Guide 18 / 27
3.2.2. Operation Procedure
1. Install a driver for the STM32 Nucleo-64 board. You can download it from the following address:
http://www.st.com/content/st_com/en/products/evaluation-tools/product-evaluation-tools/mcu-eval-to
ols/stm32-mcu-eval-tools/stm32-mcu-nucleo/nucleo-l476rg.html.
2. Install a USB-UART driver. You can download it from the following address:
https://www.maxlinear.com/product/interface/uarts/usb-uarts/xr21v1414.
3. Remove the two 0-ohm resistors of SB13 and SB14 by soldering iron, and solder them onto SB62
and SB63 respectively.
4. Short-circuit pin 1 and pin 2 of CN2, pin 3 and pin 4 of CN2, pin 1 and pin 2 of JP5 and pin 1 and pin 2
of JP6 respectively.
5. Insert Micro USIM card into J303, and choose an appropriate USIM card according to hardware
versions of BC65 module.
6. Connect rod antenna with SMA connector on J304(RF antenna connector).
7. Switch J302 (UART Switch) to the
“MAIN UART TO MCU” state.
8. Connect the Arduino interfaces to the STM32 Nucleo-64 board by connecting J305, J306, J307 and
J308 of BC65-TE-B to CN5, CN6, CN8 and CN9 respectively.
9. Connect CN1 of the STM32 Nucleo-64 board to a PC via a Mini USB cable. When the BC65 module
is powered on, device information is shown on the
“Device Manager” of the PC.
Figure 9: ST-LINK Interface Displayed on PC
3.2.3. Description of Pin Connection
The table below shows the pin connection between BC65-TE-B and STM32-L476RG MCU.
Table 3: Pin Connection between BC65-TE-B and STM32-L476RG MCU
No. MCU (Morpho)
Arduino
BC65-TE-B
Remark
1
PA2
D1
CN9-2
MCU_TX
Connects to the RX of the
main UART
