Unboxing the NXP LPC845-BRK Board
Unboxing the NXP LPC845-BRK Board
Unbox the NXP LPC845-BRK board and learn more about installing and debugging your board.
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I really love tiny and breadboard-friendly boards, especially if they are very affordable and can be used with Eclipse-based tools. So, I was excited to see the NXP LPC845-BRK board available at Mouser, and I ended up ordering multiple boards right away. Why multiple? Because they only cost CHF 5.95 (around $6)!
The boards arrived yesterday, so it is perfect timing to have them (and more of it) integrated into next semester's university course material. So you will probably see a few more tutorials for this board! Let's get started.
The kit comes in a solid card box with:
- the LPC845-BRK board
- two 10pin headers
- Micro USB cable
- a smalls screwdriver
- two 2pin jumpers and headers
- getting started reference card
The board works out of the box and does not need any soldering, and the headers are provided in case I want to customize the board. I like the fact that the headers are supplied, plus I’m free to solder what I want on the board. Plus, I can use different headers if I want to. I was puzzled by the screwdriver (what for?) until I realized that there is small potentiometer on the board!
The main MCU on the board is the LPC845 in the QFN48 package ( LPC845M301JBD4), an ARM Cortex-M0+, 30 MHz, 64 KB FLASH, and 16 KB SRAM:
The board has a ‘break-apart’ touch area: if I don’t need it, I can make the board smaller. It includes a potentiometer, an RGB LED, three push buttons (Reset, user, and ISP), plus, most importantly, the LPC11U35 acting as a debug probe:
I can use the LPC845 with an external debug probe: for this, I have to solder a jumper plus the 2×5 header. All three buttons can be used as user buttons, so technically, there are three of them. There is, as well, a jumper for an ammeter to measure the current used.
Software and Tools
There is no dedicated MCUXpresso SDK for that board (yet?), so I have downloaded the one for the device from http://mcuxpresso.nxp.com/:
With drag&drop, I added it to the NXP MCUXpresso IDE 10.3.0:
On the LPC845-BRK website, there is a zip file with examples that I have imported into the MCUXpresso IDE:
When plugged in, the board enumerates with a virtual COM port, which is a gateway to the LPC845 UART:
I was able to debug the board out of the box; the board is recognized as a CMSIS-DAP debug probe:
And voilà, I’m debugging it:
I really liked this board. It is good quality with a lot of value. It has an onboard debugger and even the possibility to use it directly with a J-Link or P&E Multilink if I wish. The board is small, can be hooked on a breadboard, and can be made even smaller with removing the touch pad. The Cortex-M0+ is not the fastest and biggest MCU on the planet, but it provides enough processing power for many smaller applications. I plan to follow-up with more tutorials in the next days and weeks. Until then, see the tutorials listed in the links section below.
List of articles about the LPC845-BRK board:
- Unboxing the NXP LPC845-BRK Board
- Tutorial: Using external Debug Probes with NXP LPC845-BRK Board
- Tutorial: Transforming the NXP LPC845-BRK into a CMSIS-DAP Debug Probe
- Tutorial: Blinky with the NXP LPC845-BRK Board
- LPC845-BRK Board webpage
- User Guide for LPC845-BRK Board
- NXP LPC845 webpage
- List of community projects
- Light intensity measurement using the new LPC845 Breakout Board
- Accelerometer-controlled LED for LPC845 Breakout using SDK drivers
- Controlling LPC845 Breakout Board LED brightness using SDK Drivers
- LPC845 I2C Co-processor
- Wooden Tower Motion/Audio Sensor
- MCUXpresso SDK
- MCUXpresso IDE: New NXP MCUXpresso IDE V10.3.0 Release
Published at DZone with permission of Erich Styger , DZone MVB. See the original article here.
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