Developing IoT Projects with ESP32

Answers

Chapter 2

1. (b) – sdkconfig. ESP-IDF uses sdkconfig as the project configuration file, which is based on the Kconfig system, which provides a compile-time project configuration mechanism. For more information, see https://www.kernel.org/doc/Documentation/kbuild/kconfig-language.txt.
2. (b) – TSL2561. It is an ambient light sensor. For more information, see https://ams.com/tsl2561.
3. (c) – Button. It is a sensor. We read the status of a button (on/off) from the connected GPIO pin.
4. (c) – PWM, or pulse-width modulation. PWM is a way to control analog actuators with a GPIO pin. For more information, see https://www.analogictips.com/pulse-width-modulation-pwm/.
5. (a) – Data and clock. An MCU needs a clock and data line to communicate with an I2C ...