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12-FILS-L-A2-S2: Microprocessor Architecture (CTI E, IETTI E 2024)

12-FILS-L-A2-S2: Microprocessor Architecture (CTI E, IETTI E 2024)

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PWM can be used to:

control the intensity of LEDs

generate a voltage between 0 V and X V (X being the max voltage of the MCU)

control analog devices

control the RPM of motors

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What is the role of the NVIC?

receive interrupts and store them in a vector

receive interrupts from peripherals and send them to the MCU

prioritize interrupts

execute the interrupt handlers

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A two channel PWM device can generate two PWM signals

with different frequencies, but the same duty cycle

with the same frequency, but different duty cycles

with different periods, but the same duty cycle

that are independent

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Which one of the following crates is a micro-architecture crate?

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What does the Pad peripherals of RP2350 do?

set the pin's values to HIGH and LOW

select the function of the MCU pins

link the inner peripherals to the MCU pins

set the pins into Input or Output mode

set the electrical properties of the MCU pins

set the pull up or down interior resistor

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R is an 8 bit register, what does write(R, !(1 << 5)) do?

writes 11101111 to the register

writes 11011111 to the register

sets bit 5 to 0 in the register

writes 5 to the first field of the register

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How does the MCU communicate with a peripheral?

using reads and write as if it where writing into the RAM memory

using a special IO communication channel

using reads and write to a certain RAM memory area

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is a framework for controlling hardware

is a library that makes accessing registers easier

is generated automatically

includes drivers

is a minimal operating system for small devices

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Why do we need volatile reads and writes?

to make sure the MCU's cache is actually sending the data to the system bus

to avoid storing the written data

to perform writes as fats as possible

to use special MCU instructions that send data to peripherals

to make sure the compiler does not reorganize the writes

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In bare metal Rust the main function's definition is:

public void main()

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