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Welcome back.

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So as you may know embedded systems can conclude defend many devices from small sensors on production

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lines to washing machines and control systems in space shuttles.

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Each component of an embedded system is chosen for efficiency and sometimes for future expansion.

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Let's take a look at the typical embedded device based on the core an embedded device such as a microcontroller

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will typically be made of an ARM core.

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Some controllers some airfields and some buses.

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These are the four main hardware components of an embedded device an ARM based microcontroller is made

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of an ARM processor which controls the embedded device.

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And as we show see this caused the difference on process source available to shoot the desired operating

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characteristics.

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The UN process so itself is made of the call.

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This is that part of the process so that processes instructions and manipulate data plus some some surrounding

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components such as memory management and caches which we shall see later.

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The core is connected to the interrupt controller using a bus and also an HP orbiter the HP stands for

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advance high performance bus which you're talking about buses in the next lesson the H2 Arbiter is then

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connected to HQ to APB bridge the APB some other type of bus known as the perfect bus from the HP to

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APD breach peripherals such as the real time clock they sites the Internet and the time this are connected.

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This bridge exists because based on your particular application you may want to control the pair for

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using the advanced pair for a bus or just the simple peripheral bus.

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Also memory controllers are connected to the HP orbiter as well as external bridge to interface with

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external bus and different kinds of memory.

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So in summary this is just a simplified example of the based embedded device.

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This one is simplified to make it easily understandable to on to someone new to embedded firmware development.

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The yellow rectangles are just the controllers the controllers coordinate important functional blocks

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off the system too commonly used controllers to interrupt controller and the memory controller which

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we should take a better look at the green rectangles and peripherals.

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And as you may know Perry first provide all the inputs outputs capabilities to the chip and are sometimes

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responsible for the uniqueness of a particular and better device.

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The blue lines are just buses and they are basically used to communicate between different parts of

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the device.

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So this is all there is to it.

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And I'll see you in the next message.