Gadgeon Systems Embedded Developer Interview Questions, Process, and Tips

Memory layout in C refers to how variables are stored in memory, including stack, heap, and data segments.

• Memory layout includes stack, heap, data segments

• Variables stored in stack have limited scope and size

• Dynamic memory allocation uses heap for storage

• Global and static variables stored in data segment

CAN arbitration is the process by which multiple nodes on a CAN bus determine which message has the highest priority to be transmitted.

• CAN arbitration is based on the identifier of the message, with lower values having higher priority.

• When two nodes attempt to transmit at the same time, the one with the lower identifier wins and continues to transmit.

• If two nodes start transmitting at the same time, a bit-wise arbitrat...read more

I2C is a synchronous serial communication protocol that uses a master-slave architecture, while SPI is a full-duplex communication protocol with a master-slave relationship.

• I2C uses two wires for communication (SDA and SCL), while SPI typically uses four wires (MISO, MOSI, SCK, and SS).

• I2C supports multiple devices on the same bus with unique addresses, while SPI requires a separate SS line for each device.

• I2C has a lo...read more

C program to convert binary to decimal

• Use a loop to iterate through the binary number from right to left

• For each digit, multiply it by 2 raised to the power of its position

• Add the result to a variable to calculate the decimal equivalent

Startup code is the code that initializes the hardware and software environment before the main application code runs.

• Startup code sets up the stack, initializes memory, configures interrupts, and sets up the processor's initial state.

• It is typically written in assembly language and is specific to the microcontroller or processor being used.

• Examples of startup code include setting up the vector table, initializing the