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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
user135646
Hi! I'm afraid there's nothing built into Espruino that'd give you that level of control.
For the test house, the best thing to do would be to use the example hex file that Nordic themselves provide. In Nordic SDK12 there is a file called
examples/peripheral/radio_test/hex/radio_test_pca10040.hexwhich is the precompiled firmware for the DK. It uses the same UART RX/TX pins that we mark on the MDBT42Q so if you've use those, you can connect a serial terminal and then it provides a simple command-line interface where you can tell it exactly what you want to do.