NINA-B50 series - Hardware integration manual
UBX-22021116 - R02
Open CPU software
Page 35 of 57
C1-Public
To load NBU firmware to the module you need:
•
NINA-B50 board (EVK-NINA-B50 or other board with NINA-50 mounted and UART available)
•
MCUXpresso SDK
•
blhost application
4.4.3.1
Hardware setup
To load the binary NBU image, NINA-B50 must be set in bootloader mode:
•
Connect
GPIO_7
(chip pin PTA4) to logical 1, or
•
On the EVK-NINA-B5, remove the jumper at
J19:9-10
and connect a wire between
3V3
and J19:9,
before powering up the evaluation board, as shown in
During power up, the board enters ROM boot mode.
Figure 15: EVK-NINA-B5 wired to enter boot loader mode
4.4.3.2
Use blhost to flash the NBU image
1.
The blhost.exe is command line application used to communicate and send commands to the
bootloader. It can be found in the SDK in the following path: <SDK location\middleware\tfm\tf-
m\platform\ext\target\nxp\common\secure_boot\tools\
2.
Copy the secure Binary NBU image file into the same folder.
