Integration Manual

ANNA-B4 series - System integration manual
UBX-21000517 - R03 Contents Page 4 of 76
C1-Public
3.2 Antenna integration guidelines .............................................................................................................. 22
3.3 Antenna connected through the RF pin ............................................................................................... 23
RF transmission line design ........................................................................................................... 24
RF connector design ........................................................................................................................ 25
3.4 Supply interfaces ...................................................................................................................................... 26
VCC application circuits .................................................................................................................. 26
3.5 GND pins ..................................................................................................................................................... 27
3.6 General layout guidelines ........................................................................................................................ 27
Considerations for schematic design and PCB floor-planning ............................................... 27
Layout and manufacturing ............................................................................................................. 27
ESD guidelines ................................................................................................................................... 28
3.7 Design-in checklists ................................................................................................................................. 29
Schematic checklist ......................................................................................................................... 29
Layout checklist ................................................................................................................................ 29
4 Open CPU software ............................................................................................................................ 30
4.1 Zephyr .........................................................................................................................................................30
Getting started with Zephyr on the ANNA-B4 module .............................................................30
Board configuration in Zephyr .......................................................................................................30
Building for ANNA-B402 EVK on the Zephyr command-line ...................................................30
4.2 Nordic nRF5 SDK ......................................................................................................................................30
Getting started with the Nordic nRF5 SDK ................................................................................. 31
Create a custom board support file for Nordic nRF5 SDK ....................................................... 31
Adding a board configuration to your project ............................................................................. 33
4.3 Definition of Low Frequency clock source ........................................................................................... 34
4.4 Bluetooth device (MAC) address and other production data .......................................................... 34
4.5 Flashing open CPU software .................................................................................................................. 35
Flashing over the SWD interface ................................................................................................... 35
Flashing over the UART interface ................................................................................................. 35
5 u-connectXpress software .............................................................................................................. 38
5.1 Flashing ANNA-B412 u-connectXpress software ............................................................................... 38
Updating over UART......................................................................................................................... 38
5.2 Low frequency clock and autosense ..................................................................................................... 45
6 Handling and soldering ...................................................................................................................... 47
6.1 ESD handling precautions ....................................................................................................................... 47
6.2 Packaging, shipping, storage, and moisture preconditioning ......................................................... 47
6.3 Soldering ..................................................................................................................................................... 47
Reflow soldering process ................................................................................................................ 48
Cleaning .............................................................................................................................................. 49
Potting and conformal coating ...................................................................................................... 49
Other remarks ................................................................................................................................... 49
7 Qualifications and approvals .......................................................................................................... 50
7.1 Country approvals .....................................................................................................................................50