NXP Semiconductors
UM10946
LPCXpresso board for LPC4367/43S67/18S37 family of MCUs
UM10946
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© NXP B.V. 2015. All rights reserved.
User manual
Rev. 1.0
— 18 November 2015
9 of 19
Installation steps for use with Keil and IAR tool chains (using CMSIS-DAP or J-Link OB
protocols):
1) Program the firmware of the Link2 using the LCT tool or LPCScrypt, following the
instructions provided for those tools. Note that part of this process will involve
installing device drivers for the board on Windows platforms.
2) Ensuring JP6 is not installed, unplug then reconnect the board to board to the
USB port of your host computer, connecting a micro USB cable to connector J5
(“Link”).
3) Download the LPCOpen examples & drivers from
http://www.lpcware.com/content/nxpfile/lpcopen-platform
, selecting the version
for the toolchain you are using; project files for LPCXpresso IDE, Keil and IAR
tools are available.
4) Import the project file.
4. Target MCU Serial ports
By default the Target MCU UART0 is connected to the FTDI header at P4. This can be
used for sending debug messages out to a host computer via a suitable cable. The
Target MCU UART0 can also be connected through a virtual communication port
(VCOM) UART bridge Link2 function to a host computer connected to the USB Link2
(J5).
The Redlink protocol firmware for the Link2 (downloaded by default by the LPCXpresso
IDE) includes UART bridge functionality (VCOM support). A version of the CMSIS-DAP
Link2 firmware is also available with this functionality (called “CMSIS-DAP with bridges”),
and can be programmed into the Link2 using the LPC-Link2 Configuration Tool (LCT),
available at
http://www.lpcware.com/LPCUtilities
. When running this firmware the default
source of data to the Target MCU RXD is the FTDI header. Once the Link2 receives any
data via the VCOM port of a host computer it will set P2_2 low to select the Link2 UART0
data to the Target MCU. Once the VCOM port has been used it is necessary to power
cycle the board before FTDI connection can be used.
4.1 P4 FTDI header
The FTDI header P4 mates with FTDI cable TTL-232R-3V3. P4 interfaces the Target
MCU UART0 to a Host PC virtual serial port. The P4 location is shown in Fig 2.
The pin
out and a description of the signals at P4 are listed in Fig 3. By default there may be no
header installed at P4.
.