isp-programmer

ISP Programmer for NXP Cortex-M Chips

Command-line tool for programming NXP microcontrollers via the UART ISP interface.

Features

Secure Write

To prevent bricking the chip during an interrupted write:

• The checksum in flash is first set to zero, forcing the chip to boot into ISP mode if power is lost.
• The image is then written from the topmost page down to the first page.
• The first sector (which contains the valid checksum) is written last.

This ensures that any failure during programming will leave the chip in ISP mode.

Chip Families Supported:

• LPC80x
  • LPC802
  • LPC804
• LPC82x
  • LPC822
  • LPC824
• LPC84x
  • LPC844
  • LPC845

Untested, expected to work

• LPC81x
  • LPC810
  • LPC811
  • LPC812
• LPC83x
  • LPC832
  • LPC834
• LPC86x
  • LPC865

Chips using UU-encoded protocols (e.g., LPC1700 family) are not supported. Other NXP devices with 1 kB sectors may work if added to the lpctools_parts.def file.

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

Installation

From PyPI

pip install isp_programmer

From Source

git clone https://github.com/snhobbs/isp-programmer.git
cd isp-programmer
pip install .

Default chip definitions are bundled. For custom chips, use the --config-file flag or copy your lpctools_parts.def to /etc/lpctools_parts.def.

Usage

Erase Entire Flash

isp_programmer --device /dev/ttyUSB0 -b 9600 -crystal_frequency 12000 masserase

Program Flash Image

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

Similar Projects

• MXLI by JitterCompany
• NXP ISP by idreamoferp
• NXP ISP Loader by pzn1977
• LPC81x ISP Tool by laneboysrc
• LPC21ISP by Senseg
• Nxpprog by ulfen