22. Pack Multiple Fields into a 16-bit Control Register

In embedded systems, multiple configuration fields are often packed into a single register using bit-level operations.

You are given the following field specifications to be packed into a 16-bit control register:

Your task is to:

• Read mode, speed, and status from input
• Pack them into a uint16_t register following the given bit layout
• Ensure reserved bits (8–9) remain 0
• Print the resulting packed value
   

Example-1

Input: mode = 3, speed = 10, status = 12
Output: 12371
(Hex: 0x3053, Binary: 0011000001010011)

Example-2

Input: mode = 7, speed = 31, status = 63
Output: 64767
(Hex: 0xFCFF, Binary: 1111110011111111)

Example-3

Input: mode = 4, speed = 16, status = 8
Output: 8324
(Hex: 0x2084, Binary: 0010000010000100)