Module 4 and 5 RTES

What is the purpose of GPIOs in STM32F407?

• Only for analog input

• For general-purpose input/output operations

• For memory storage

• For clock configuration

Which register is used to configure the mode (input/output/alt/analog) of GPIO pins in STM32F407?

• GPIOx_ODR
  
  

• GPIOx_MODER
  
  

• GPIOx_IDR

• GPIOx_BSRR

The SYSCFG (System Configuration Controller) in STM32F407 is mainly used for:

• Controlling timers

• Configuring external interrupt lines and system-level settings
  
  

• Managing ADCs

• Power management

Which STM32 register enables interrupt on GPIO pin?

• GPIOx_PUPDR

• GPIOx_BSRR

• EXTI_IMR

• NVIC_ISER

Which STM32 peripheral allows data transfer from memory to peripherals without CPU involvement?

• UART

• ADC

• DMA

• TIM

In STM32, which pin mode must be selected to turn on an LED?

• Analog mode

• Input mode

• Alternate function

• Output mode

To control a buzzer with STM32F407, which technique is commonly used?

• PWM or digital output signal

• SPI communication

• Analog comparator
  
  

• I2C communication

What kind of sensor is typically used for obstacle detection and works based on reflected infrared light?

• Ultrasonic sensor

• IR Sensor
  
  

• Temperature sensor

• Gyroscope

Which two pins are used to interface with an HC-SR04 Ultrasonic Sensor?

• TX and RX

• SDA and SCL

• Trigger and Echo

• Vcc and GND

When interfacing an IR sensor with STM32, which GPIO mode is typically used?

• Analog

• Output
  
  

• Alternate function

•  Input