https://devzone.nordicsemi.com/f/nordic-q-a/4711/unexpected-uart-outputThis may not be a major disaster,but it bothers me: I have written an application to read data from an ADXL345 accelerometer (using SPI) and print out the data on a console using simple_uart.c - in particular the function simple_uart_putstring() Keilen-USTelligent Community 13Thu, 04 Dec 2014 13:37:54 GMThttps://devzone.nordicsemi.com/thread/16685?ContentTypeID=1Thu, 04 Dec 2014 13:37:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:224677c9-43da-4c4e-a49e-b2a44d718f1aNguyen Hoan Hoang<p>When debugging, the jtag will perform a target reset after flashing the code in. Then it performs the sequence to enter debug mode. Often the target would start running after the first reset before the jtag has time to halt it. If your output string is done from the very beginning, you are likely to see it twice.</p><div style="clear:both;"></div>