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NXP Semiconductors
LPCXpresso55S36UM
LPCXpresso55S36 Development Board User Manual
Figure 16. MCU-Link enumerated devices for CMSIS-DAP firmware
• If the J-Link firmware was programmed, then only the green VCOM LED (D17) is
used to indicate status. The VCOM LED lights up when MCU-Link boots. Then,
when you start a new debug session, the LED blinks to indicate that debug activity
is in progress. In this case, two devices (one J-Link driver USB device and one J-
Link CDC UART port VCOM port) get enumerated.
Now, your LPCXpresso55S36 board is ready for use. If you use the board with
MCUXpresso IDE version 11.3 or higher, you are notified in case a more recent firmware
version is available for MCU-Link. If you use the board with a different IDE, ensure that
latest MCU-Link firmware version is installed on the board.
3.3 Supported MCU-Link features
MCU-Link includes several mandatory and optional features. The table below
summarizes the MCU-Link features supported on the LPCXpresso55S36 board.
Feature Description
Serial wire debug (SWD) / serial wire debug
trace output (SWO)
Allows SWD-based debugging with SWO for profiling and/or low
overhead debug standard I/O communication
Virtual communication (VCOM) serial port Adds a serial COM port on the host computer, and connects it to the
target MCU by using MCU-Link as a USB-to-UART bridge
USB serial input/output (USBSIO
[1]
) port Adds a USB serial I/O port on the host computer, and connects it to the
target MCU by using MCU-Link as a USB-to-SPI bridge or USB-to-I2C
bridge. It also allows MCU-Link to be used as a USB-to-GPIO bridge to
connect the MCU-Link LPC55S69 target to the host computer.
External debug probe support Allows debugging the target MCU (LPC5536) using an external debug
probe, instead of MCU-Link. Support for external debug probe is enabled
by disabling SWD feature. While using external debug probe, VCOM and
USBSIO features can be used.
External target support
[1]
Allows debugging an external target MCU using MCU-Link
Energy/power/current/voltage consumption
measurement
[1]
(MCUXpresso IDE only)
Allows onboard measurement of current drawn by the target MCU
Table 24. Supported MCU-Link features
[1] J-Link firmware does not support this feature.
3.4 Supported debug scenarios
In the LPCXpresso55S36 board, the MCU-Link debug probe target can be either the
LPC5536 MCU or an external target compliant with MCU-Link. The board also allows you
to use an external debugger for debugging the LPC5536 MCU, in place of the MCU-Link
debug probe.
The table below describes the debug scenarios supported on the LPCXpresso55S36
board.
LPCXpresso55S36UM All information provided in this document is subject to legal disclaimers. © NXP B.V. 2022. All rights reserved.
User manual Rev. 2 — 5 September 2022
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