DA14695 Development Kit USB
Overview
The DA14695 Development Kit USB is a low cost development board for DA14695. The development kit comes with an integrated debugger and an USB hub to have both the on-chip USB and the J-Link connected via a single port.
DA14695 Development Kit USB (Credit: Renesas Electronics Corporation)
Hardware
DA14695 Development Kit USB has two external oscillators. The frequency of the sleep clock is 32768 Hz. The frequency of the system clock is 32 MHz.
Supported Features
The _da14695_dk_usb board configuration supports the following hardware features:
Interface |
Controller |
Driver/Component |
|---|---|---|
FLASH |
on-chip |
flash |
GPIO |
on-chip |
gpio |
MPU |
on-chip |
arch/arm |
NVIC |
on-chip |
arch/arm |
RTT |
Segger |
console |
UART |
on-chip |
serial |
SPI |
on-chip |
spi |
Other hardware features, including the Configurable MAC (CMAC) controller, are currently not supported by the port.
For more information about the DA14695 Development Kit see:
System Clock
The DA14695 Development Kit USB is configured to use the 32 MHz external oscillator on the board.
Connections and IOs
The DA14695 Development Kit USB has one LED and one push button which can be used by applications. The UART is connected to on-board serial converter and accessible via USB1 port on motherboard.
The pin connections are as follows:
LED (red), = P1.01
BUTTON, labeled k1 = P0.06
UART RX, connected to J-Link serial = P0.08
UART TX, connected to J-Link serial = P0.09
Programming and Debugging
Applications for the da14695_dk_usb board configuration can be
built, flashed, and debugged in the usual way. See
Building an Application and Run an Application for more details on
building and running.
Flashing
The DA14695 boots from an external flash connected to QSPI interface. The image written to flash has to have proper header prepended. The process is simplified by using dedicated eZFlashCLI [3] tool that takes care of writing header and can handle different types of flash chips connected to DA1469x MCU. Follow instructions on ezFlashCLI [3] to install the tool. Once installed, flashing can be done in the usual way.
# From the root of the zephyr repository
west build -b da14695_dk_usb samples/basic/blinky
west flash
Debugging
The DA14695 Development Kit USB includes a J-Link [2] adaptor built-in which provides both debugging interface and serial port. Application can be debugged in the usual way once DA14695 Development Kit USB is connected to PC via USB.