148. ADC Sample Union View

Your task is to define a struct named AdcSample that represents a 16-bit ADC sample with a timestamp.

The structure must contain:

• A uint32_t field named timestamp
• An anonymous union containing:
  • A uint16_t value named raw
  • A struct containing:
    • uint8_t lo (least significant byte)
    • uint8_t hi (most significant byte)

The program will:

1. Read a timestamp (decimal)
2. Read a raw ADC value (hexadecimal, prefixed with 0x)
3. Assign values to the struct
4. Print the timestamp, low byte, and high byte in hexadecimal format

Example

Input:

1000 0x03F2 

Output:

ts=1000 lo=0xF2 hi=0x03

Explanation:

• raw = 0x03F2
• lo = 0xF2
• hi = 0x03

⚠️ Assumptions (MANDATORY)

• The target system is little-endian
• The code is intended for embedded / firmware environments where union-based register overlays are commonly used
• Accessing different union members is allowed as a representation view