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NXP Semiconductors
UM11379
UJA116xA evaluation boards
6.2.2 HW setup for FlexGUI operation
The watchdog in the SBC must be off while the FlexGUI is running. The watchdog is
always off in Forced Normal mode and off by default in Software Development mode (a
sample script for switching the device to Software Development mode via the FlexGUI is
included in
).
A system reset is generated after programming the MTPNV memory, after which the
connection between the FlexGUI and the board will need to be re-established (see
). If the re-connection fails, try again after a power-off/wait-3-seconds/
power-on sequence on the UJA116xA-EVB.
Once the FlexGUI firmware has been installed on the microcontroller board, the
jumpers on the boards need to be set as illustrated in
UJA116xA-EVB plugged into the microcontroller board. The resulting supply and data
line interconnections between the boards are shown in
. Note that only the
relevant header interconnections are shown in the schematics extract in
. See
the full board schematics for further details.
Figure 24. UJA116xA-EVB/S32K144EVB jumper settings for FlexGUI operation
UM11379
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User manual
Rev. 1 — 23 April 2021
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