Ublox NINA-B4 Series, Руководство по системной интеграции, Страница: 4 / 61

NINA-B4 series - System integration manual
UBX-19052230 - R09 Contents Page 4 of 61
C1-Public
2.6 Antenna interface .....................................................................................................................................21
2.6.1 External antenna selection .............................................................................................................22
2.6.2 NINA-B4x6 design-in ........................................................................................................................26
2.7 NFC interface .............................................................................................................................................27
2.7.1 Battery protection ............................................................................................................................28
2.8 Debug interface .........................................................................................................................................28
2.9 General layout guidelines ........................................................................................................................29
2.9.1 General considerations for schematic design and PCB floor-planning .................................29
2.9.2 Layout and manufacturing .............................................................................................................29
2.9.3 Thermal guidelines ...........................................................................................................................30
2.9.4 ESD guidelines ...................................................................................................................................30
3 Open CPU software ............................................................................................................................ 32
3.1 Nordic SDK..................................................................................................................................................32
3.1.1 Getting started with the Nordic SDK ............................................................................................32
3.1.2 Adding a board configuration to your project .............................................................................34
3.2 Zephyr .........................................................................................................................................................35
3.2.1 Getting started with Zephyr on the NINA-B4 module ...............................................................35
3.2.2 Board configuration in Zephyr .......................................................................................................36
3.2.3 Building for NINA-B4 EVK using the Zephyr command-line environment ...........................36
3.3 Bluetooth device (MAC) address and other production data ..........................................................36
3.4 Definition of Low Frequency Clock source ...........................................................................................36
3.5 Flashing open CPU software ..................................................................................................................37
3.5.1 Flashing over the SWD interface ...................................................................................................37
3.5.2 Flashing over the UART interface .................................................................................................37
4 u-connectXpress software .............................................................................................................. 41
4.1 Updating NINA-B41 software .................................................................................................................41
4.1.1 Updating over UART.........................................................................................................................41
4.2 Low frequency clock source ....................................................................................................................48
5 Handling and soldering ..................................................................................................................... 49
5.1 ESD handling precautions .......................................................................................................................49
5.2 Packaging, shipping, storage, and moisture preconditioning .........................................................49
5.3 Soldering .....................................................................................................................................................49
5.3.1 Reflow soldering process ................................................................................................................50
5.3.2 Cleaning ..............................................................................................................................................51
5.3.3 Other remarks ...................................................................................................................................51
6 Product testing ................................................................................................................................... 52
6.1 u-blox in-line production testing ............................................................................................................52
6.2 OEM manufacturer production test .....................................................................................................53
6.3 “Go/No go” tests for integrated devices ...............................................................................................53
Appendix ....................................................................................................................................................... 54
A Glossary ................................................................................................................................................. 54
B Antenna reference designs ............................................................................................................. 56