pmeerw's blog

Feb 2015

Wed, 11 Feb 2015

Notes on the Freescale FRDM-K64F devboard

The Freescale FRDM-K64F is a small ARM Cortex-M4 board with 120MHz, 1MB flash memory, 256KB RAM, USB and ethernet. It comes with OpenSDAv2, a serial and debug adapter, supposedly open source. It implements CMSIS-DAP.

Strangely, the demo app uses a serial with 230400 bps, one can connect with cu -l /dev/ttyACM0 -s 230400.

GCC toolchain is supported, I installed gcc-arm-none-eabi-4_8-2014q3-20140805-linux.tar.bz2 to /opt/ and set the environment variable export ARMGCC_DIR=/opt/gcc-arm-none-eabi-4_8-2014q3/.

The KDS is an Eclipse-based IDE, it comes with openocd and some udev rules. Use openocd -f kinetis.cfg, there is a patch not in openocd mainline with Kinetis support. Connect to openocd:

telnet localhost 4444

Use gdb (/opt/gcc-arm-none-eabi-4_8-2014q3/bin/arm-none-eabi-gdb) with an .elf file to flash and/or debug:

set mem inaccessible-by-default off
target remote localhost:3333
monitor reset halt

posted at: 01:47 | path: /projects | permanent link

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