Flashing and Installing the new firmware and drivers for LPC11U35 debug probes

Document created by Carlos_Mendoza Employee on Sep 28, 2017
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Flashing and Installing the new firmware and drivers for LPC11U35 debug probes


We recently released a new set of debug firmware and Windows 7 drivers for our boards that feature the LPC11U3x MCU as a debug probe (so all the "MAX" boards). The new firmware can be found under the Software & Tools tab of the board page or it can download directly from this link:

 Firmware and drivers for LPC11U35 debug probes

The intention is for this firmware to be used instead of the mbed-based firmware and driver that has been used up until now, if you are not going to use MBED (you can continue to use the MBED version if you so wish however). Some reasons to consider the new firmware & driver:

- The CMSIS-DAP implementation is newer, so a little more robust and faster.
- The VCOM / serial port driver supports autobaud, with speeds up to 115200.
- The VCOM driver has a cleaner installation (mbed serial port driver needs board to be plugged in to install, which is a little unusual).
- The firmware auto-detects if a target serial port connection is present and enumerates a driver if they are.
- The new firmware gives a unique ID per board, allowing multiple board connections at once.



To install the windows drivers follow these steps:


1) Unzip the Firmware and drivers and double click on the LPC11Uxx_Debug_Probe_VCOM_v1.0.0 executable:



2) The installation wizard will show up, click on Next:



3) Choose the install location, the driver is installed by default in C:\Users\[USER]\AppData\Local\NXP Semiconductors\LPC11Uxx_VCOM\ but you can override this:



4) You will be asked to install the drivers, click on Install (These drivers were developed by www.ashling.com and are the intellectual property of NXP):



5) Finally click on Finish:





The next step is to update the debug probe (LPC11U3x) firmware:


1) Unplug the usb connector.



2) Hold down the reset button and plug in the usb connector.



3) The board will appear on your system as a disk called CRP DISABLD.



4) Delete the file called firmware.bin on this disk.



5) Drag and drop the new binary image.



6) Connect and re-connect usb, you will have an additional VCOM port shown in Windows Device Manager:



Hope it helps!



Best Regards,

Carlos Mendoza

Technical Support Engineer

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