Simplifying Embedded Systems: Learn, Innovate, Consult

Reverse a hex number in C

Reverse a hexadecimal number like 0x12345678 into 0x78563412 by reversing its bytes (not just the bits or nibbles)

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Big Endianness vs Little Endianness

Little-Endian: Stores the least significant byte (LSB) first at the lowest memory address. For example, 0x12345678 is stored as 78 56 34 12. This format is common in x86 architectures. Big-Endian: Stores the most significant byte (MSB) first at the ...

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What is Endianness?

Endianness is a term used to describe the order in which a sequence of bytes is arranged into larger numerical values when stored in computer memory. Specifically, it determines how multi-byte data types (such as integers or floating-point numbers) a...

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Volatile Keyword In C

The volatile keyword in C is used to inform the compiler that a variable's value may change at any time, without any action being taken by the code in which it appears. This is crucial when working with hardware registers, memory-mapped I/O, or varia...

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XMacro in C

X-macros are a powerful technique in C programming that leverages the C preprocessor to manage repetitive code patterns more efficiently. This technique can simplify the maintenance of code that has repeated structures, such as large lists of similar...

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Model Car To RC Car Conversion

Discover the exhilarating world of RC car conversion as we delve into the step-by-step process of transforming model cars into remote-controlled wonders. From selecting the right model to installing the necessary components, this guide covers everyth...

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What is ISR?

Interrupt Service Routine (ISR) is a specialized function or routine that is called when an interrupt is triggered by a hardware device. When a hardware event occurs, like a timer reaching a specific value or a button being pressed, it sends an inter...

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SPI vs I2C

SPI (Serial Peripheral Interface) is a full-duplex protocol with separate data, clock, and select lines, offering faster communication at short distances, suitable for high-speed devices like sensors and displays. I2C (Inter-Integrated Circuit), a ha...

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CAN Interview Questions

CAN bus, or Controller Area Network bus, is a robust vehicle bus standard designed for communication between microcontrollers and devices within a vehicle without needing a host computer. It's used in automotive systems because it allows for reliable...

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Microcontroller vs Microprocessor

Microcontrollers are integrated circuits with a processor, memory, and peripherals on a single chip. They excel in dedicated tasks like embedded systems, due to low-power optimization and compact size. Microprocessors, on the other hand, serve as the...

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Compare Two Firmware Version Strings in C

Develop a C code that compare the two strings, containing the two firmware versions. e.g. char fw_ver1 [] = "1.2.1" and char fw_ver2 [] = '1.2.2". Code has to compare if first version is higher, lower or if equal to the second version. code has the s...

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STM8S Temperature Monitor: LM35 & 7-Segment DIY Project

Learn how to build a temperature monitoring system using the STM8S microcontroller, LM35 temperature sensor, and a 7-segment display. We'll walk you through each step, from assembling the hardware to writing code in STM8S, ensuring you gain hands-on ...

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