While opening a GPIO device, is assigning initial pin required? If not, what can
ID: 3796324 • Letter: W
Question
While opening a GPIO device, is assigning initial pin required? If not, what can be done afterwards to add a pin? How the LWGPIO program is different from standard GPIO program. Explain? If one task is created inside of other one as its last mission. What happens to main task while newly created task is running? When does it end? What is the task priority? How it affects the program execution? What is MQX? Why do we need Operating System? What is the difference between Operating System and Real Time Operating System (RTOS)? What do you define in the TASK_TEMPLATE_STRUCT? What are the parameters for creating a task? What is the purpose of FILE PTR? Explain. Only one out of the four LEDs needs to be turned ON/OFF. How is this task accomplished by modifying GPIO PIN STRUCT? Please justify your answer with the appropriate codes. Replace MQX_AUTO_START_TASK with 0. What will happen to the program output? Will the program execute?Explanation / Answer
What is mQX why will we want operational system?
MQX RTOS could be a period of time software package developed by Precise computer code Technologies INC., and presently sold-out by Synopsys, Embedded Access INC, and Free scale. MQX is Associate in nursing abbreviation standing for Message Queue govt.
Like most period of time operational systems, MQX RTOS includes a multitasking kernel with pre-emptive planning and quick interrupt response, in depth inter-process communication and synchronization facilities, and a filing system.
The MQX period of time software package (RTOS) provides period of time performance at intervals a little, configurable footprint. The RTOS is tightly integrated with 32-bit MCUs and MPUs from NXP and is given normally used device drivers.
The MQX RTOS is intended to own a contemporary, component-based microkernel design giving customization by feature, size, and speed by choosing the elements engineers want to incorporate whereas meeting the tight memory constraints of embedded systems.
What is task priority? How its effects the program execution?
The FreeRTOS computer hardware ensures that tasks within the prepared or Running state can forever run processor (CPU) time in preference to tasks of a lower priority that also are within the prepared state. In different words, the task placed into the Running state is often the very best priority task that's ready to run.
When making a task with rt_task_init (...) one in every of the arguments to is that the priority at that the task is to execute. By variable the priority of the task spawned, you'll be able to have an effect on the priority of the task. The task priority range itself has no specific significance by itself solely the worth relative to different tasks is vital. Additionally a task's priority is modified once its spawned exploitation the subsequent routine:
Int rt_change_prio (RT_TASK *task, intpriority) :
What is the difference between operating system and real time operating system?
A software package, or OS, offers the looks of permitting multiple programs to execute at identical time. ... However, the computer hardware in RTOS provides a certain or settled execution pattern. Real time needs specify that Associate in nursing embedded system answer an occasion at intervals an outlined time or point in time.
A software package, or OS, offers the looks of permitting multiple programs to execute at identical time. However, a processor core will solely run one thread of execution at a time. The computer hardware that's used by each OS and RTOS, or real time operational systems, apace switches between programs and provides the illusion of synchronous execution. However, the computer hardware in RTOS provides a certain or settled execution pattern. Real time needs specify that Associate in nursing embedded system answer an occasion at intervals an outlined time or point in time. Most often, users assign a priority to every thread of execution to realize philosophical doctrine exploitation real time schedulers.
As Associate in nursing application grows in quality or size, there area unit bound edges to exploitation Associate in Nursing RTOS as opposition Associate in Nursing OS. These edges embrace modularity, cleaner interfaces, maintainability, code apply and idle time. Different edges embrace improved potency, easier management over peripherals and versatile interrupt handling.
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