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NXP ISP Cortex-M programming tool

Project description


ISP Programmer for NXP Cortex-M Chips

Command line programmer for the NXP ISP interface.


Secure Write

The checksum in flash is written to zero as the first write, so if the upload fails the chip will boot back into the ISP mode. The image is then written from the top most page down to the first page. The first sector contains the valid image checksum so a failed write will keep the device in ISP mode instead of just being bricked.

Chip Families Supported:


UU encoded families not supported (LPC1700 family and similar)

NXP chips with 1kB sector sizes should work by adding their information to the lpctools_parts.def configuration file.

The configuration file is identical to that used by the lpctools project


Erase Entire Flash: isp_programmer --device /dev/ttyUSB0 -b 9600 -crystal_frequency 12000 masserase
Program Flash: isp_programmer --device /dev/ttyUSB0 -b 9600 -crystal_frequency 12000 writeimage --imagein blinky804.hex
Read Chip Info: isp_programmer --device /dev/ttyUSB0 -b 9600 -crystal_frequency 12000 querychip


NXPISP is a python3 package and can be installed using pip. Clone the repository, enter the directory with in it and run pip install . The default location for the configuration file is at /etc/lpctools_parts.def. The file can either be copied there or the path passed in when calling the tool with the --config_file/-f flag.

1. cd NXPISP
2. pip install .
3. cp lpctools_parts.def /etc

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