Once you have created a prototype of your product, you may want to be able to use the developed code on a target MCU (NXP LPC1xxx) in situ in your end-application board.

This page documents the development of a LPC1xxx bootloader program which makes the following process possible:

• The binary file to flash the target MCU with is placed on the mbed's local filesystem.
• The bootloader program is loaded onto the mbed's local filesystem and run, loading an encoded version of the binary file onto the LPC1xxx chip.

Chris Styles already experimented with bootloading NXP chips in Prototype to Hardware. This carries out the desired process, but makes use of the Flash Magic flash utility. This requires the user to convert the binary file into hex and then put it through the flash utility. Hence, the process could be streamlined by allowing binary files to be directly loaded, which is now possible using this bootloader program.