Embedded Engineer Intern Interview Questions and Answers

Program to blink LED using millis function in Arduino

• Declare a variable to store the current time

• Use the millis() function to get the current time

• Compare the current time with the previous time to check if the desired time has elapsed

• If the desired time has elapsed, toggle the LED state and update the previous time

• Repeat the process in a loop

I2C protocol is a serial communication protocol used to connect multiple devices on a bus, allowing them to communicate with each other.

• I2C uses two wires - SDA (data line) and SCL (clock line) for communication.

• Devices on the bus are identified by unique 7-bit addresses.

• Master device initiates communication by sending start condition and address of the slave device it wants to communicate with.

• Slave device responds with an acknowledgment signal.

• Data is transferred in 8-bit c...read more