To connect a simple ultrasonic sensor say(HC-SR04) to nrf52840 development board and get the values through emulator.

[saver]

i'm really new to the board (nrf52840) the examples like blink,pwm i have tried out. now i need to know the programming of the ultrasonic or any sensor and how to connect ti to the board.

how to use the p0.03(A0) to p0.31 pin in nrf52840 board.

[Turbo J]

The HC-SR04 requires 5V +-10% and also outputs 5Volts.

Thus you need a level shifter becaus the GPIOs on the NRF are not allowed to go this high (see absolute maximum ratings).

Timing can be done using GPIOTE, PPI and a TIMER.

[saver]

thank you for your reply sir. i use segger embedded studio , when i dump the program into the board and run it , i can't see any values. the arduino has a serial monitor to see the values, how can i see in this.