MSP432E401Y: Code Composer and simplelink_msp432e4_sdk_4_20_00_12 file functions fails

Finn Boger said:

Running without JTAG, the file functions fails!

When you say "file functions" do you mean functions in <stdio.h> such as fopen() for file I/O?

By default, the file I/O functions in <stdio.h> use the CIO protocol which stops the device at a breakpoint, and the CCS debugger via JTAG performs the file I/O before the device is resumed.