Testing a sample application¶
Follow the instructions in the Testing section of the documentation for the sample to ensure that the application runs as expected.
Information about the current state of the application is usually provided through the LEDs and/or via UART.
How to connect with PuTTY¶
To see the UART output, connect to the board with a terminal emulator, for example, PuTTY.
Connect with the following settings:
Baud rate: 115200
8 data bits
1 stop bit
HW flow control: None
How to use RTT¶
To view the logging output using Real Time Transfer (RTT), modify the configuration settings of the sample to override the default UART console:
CONFIG_USE_SEGGER_RTT=y CONFIG_RTT_CONSOLE=y CONFIG_UART_CONSOLE=n
SEGGER’s J-Link RTT is part of the J-Link Software and Documentation Pack. You must have this software installed on your platform to use RTT.
Connecting via RTT¶
To run RTT on your platform, complete the following steps:
From the J-Link installation directory, open the J-Link RTT Viewer application:
On Windows, the executable is called
On Linux, the executable is called
Select the following options to configure your connection:
Connection to J-Link: USB
Target Device: Select your IC from the list
Target Interface and Speed: SWD, 4000 KHz
RTT Control Block: Auto Detection
Click OK to view the logging output from the device.