KL27Z128/256 board

2016/11/30

KL27Z is configured to use internal 48MHz RC oscillator.

The board has push button on PTA4 and LED on PTD7. The button works as ‘a’ key and the LED as an indicator for capslock.

Resources

Kinetis KL2x

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/kinetis-cortex-m-mcus/l-series-ultra-low-power-m0-plus/kinetis-kl2x-48-mhz-usb-ultra-low-power-microcontrollers-based-on-arm-cortex-m0-plus:KL2x

KL27Z128/256 Data Sheet

http://www.nxp.com/assets/documents/data/en/data-sheets/KL27P64M48SF6.pdf

KL27Z128/256 Reference Manual

http://www.nxp.com/assets/documents/data/en/reference-manuals/KL27P64M48SF6RM.pdf

Errata

http://www.nxp.com/assets/documents/data/en/errata/KINETIS_L_1N71K.pdf

e9457: Kinetis Flashloader/ ROM Bootloader: The peripheral auto-detect code in bootloader can falsely detect presence of SPI host causing non-responsive bootloader Description: During the active peripheral detection process, the bootloader can interpret spurious data on the SPI peripheral as valid data. The spurious data causes the bootloader to shutdown all peripherals except the “falsely detected” SPI and enter the command phase loop using the SPI. After the bootloader enters the command phase loop using the SPI, the other peripherals are ignored, so the desired peripheral is no longer active. The bootloader will not falsely detect activity on the I2C, UART, or USB interfaces, so only the SPI interface is affected. Workaround: Ensure that there is an external pull-up on the SPI chip-select pin or that the pin is driven high. This will prevent the bootloader from seeing spurious data due to activity on the SPI clock pin.

Kinetis Bootloader and blhost

http://www.nxp.com/products/microcontrollers-and-processors/arm-processors/kinetis-cortex-m-mcus/kinetis-symbols-footprints-and-models/kinetis-bootloader:KBOOT

Build

make

Program

Flash firmware with ROM bootloader.

blhost -u -- flash-image  build/kl27z.hex erase

TODO

• Fix boards/ELF files
• add macro USBx_CTL_RESUME to ChibiOS-Contrib/os/common/ext/CMSIS/KINETIS/kl27zxxx.h