nRF Connect SDK Fundamentals : Lesson 5 Quizz : RTS question

[MDev]

I have problem with one question of the lesson 5 Quizz of the "nRF Connect SDK Fundamentals" course (Dev Academy)

https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/lessons/lesson-4-serial-communication-uart/quizzes/lesson-5-quiz/

Here is the question :

Regarding the name, RTS is "request to send", so RTS indicate that the device is ready to receive and not to send, so the answer 2 seems not the good one.

RTS is used to indicate that the device is busy or not, and ready or not to accept new data. So answer 4 seems to be the closest one to what can be a good answer.

What do you think ?

[tesc]

Hi,

I agree that among the answers provided in the quiz, the correct one would be "to send that it is busy and not ready to accept new data".

For UART flow control, each device controls (writes to) a line which indicates whether or not it is ready to receive (Request To Send, RTS), and reads a line to check if the peer is ready to receive (Clear To Send, CTS). Those lines are connected according to the figure, with RTS on one end connected to CTS on the other, and vice versa.

I find the lession itself to be wrong as well, since it states that "each end will use its RTS to indicate that it is ready to send new data". The correct phrasing is that it "is ready to receive new data".

I will report this internally so that it can be fixed, both in the lesson text and in the quiz.

Regards,
Terje