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102 lines
3.9 KiB
Plaintext
102 lines
3.9 KiB
Plaintext
/**
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@defgroup boards_frdm-k64f NXP FRDM-K64F Board
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@ingroup boards
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@brief Support for the NXP FRDM-K64F
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## Overview
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The board has a K64F Kinetis MCU and is supported by `cpu/kinetis_common`.
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## Hardware
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| MCU | MK64FN1M0VLL12 |
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|:----------------- |:--------------------- |
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| Family | ARM Cortex-M4F |
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| Vendor | Freescale |
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| RAM | 256KiB |
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| Flash | 1024KiB |
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| Frequency | 120MHz |
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| FPU | yes |
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| Timers | yes |
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| ADCs | yes |
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| UARTs | yes |
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| SPIs | yes |
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| I2Cs | yes |
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| Ethernet | WIP |
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| USB | WIP |
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| LPM | TODO |
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| DAC | TODO |
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| Vcc | TODO |
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| Reference Manual | TODO |
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The board has an integrated debugger adapter (k20dx128) with the firmware from
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ARMmbed.
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There are three interfaces available:
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* Drag-n-drop programming over Mass Storage Device
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* USB Serial Port (/dev/ttyACMx) connected to a K64F UART interface
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* CMSIS-DAP for debugging with e.g. OpenOCD
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**Please update the firmware to version 0221, see below.**
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## OpenOCD
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The latest (01.07.2015) OpenOCD version (also current git) does not support
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the K64F. There is a [patch](http://openocd.zylin.com/#/c/2773/) which makes
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flashing and debugging possible. A refactored and rebased version can be found
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[here](https://github.com/jfischer-phytec-iot/openocd/tree/wip%40phytec).<br>
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## Flashing the Device
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#### Over OpenOCD
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make BOARD=frdm-k64f flash
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#### Over MSD
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Simply mount the mbed Mass Storage Device und copy new RIOT firmware.
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See also the ARMmbed
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[instructions](https://developer.mbed.org/platforms/FRDM-K64F/#getting-started-
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with-mbed).
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## Updating the Bootloader
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A update of CMSIS-DAP firmware is necessary to using the board with OpenOCD.
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A good step by step guide is available
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[here](https://developer.mbed.org/handbook/Firmware-FRDM-K64F).
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## I can't flash the device with OpenOCD anymore...
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When a flash process has failed or a wrong firmware has been programmed, the
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following OpenOCD message may appear:
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```
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START...
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Info : SWD IDCODE 0x2ba01477
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Info : SWD IDCODE 0x2ba01477
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Error: Failed to read memory at 0xe000ed00
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Examination failed, GDB will be halted. Polling again in 300ms
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TargetName Type Endian TapName State
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-- ------------------ ---------- ------ ------------------ ------------
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0* k64f.cpu cortex_m little k64f.cpu unknown
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START...
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Warn : *********** ATTENTION! ATTENTION! ATTENTION! ATTENTION! **********
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Warn : **** ****
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Warn : **** Your Kinetis MCU is in secured state, which means that, ****
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Warn : **** with exception for very basic communication, JTAG/SWD ****
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Warn : **** interface will NOT work. In order to restore its ****
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Warn : **** functionality please issue 'kinetis mdm mass_erase' ****
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Warn : **** command, power cycle the MCU and restart OpenOCD. ****
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Warn : **** ****
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Warn : *********** ATTENTION! ATTENTION! ATTENTION! ATTENTION! **********
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in procedure 'reset'
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in procedure 'ocd_bouncer'
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```
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Solution 1:
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+ Hold the reset button and execute make BOARD=frdm-k64f flash in a project
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directory
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+ Release reset button just after "Info : MDM: Chip is unsecured.
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Continuing."
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Solution 2:
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+ Comment out line `reset_config srst_only srst_nogate connect_assert_srst`
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in `boards/frdm-k64f/dist/openocd.cfg`
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+ Execute make BOARD=frdm-k64f flash in a project directory
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Solution 3:
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+ Ask Deep Thought
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*/
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