SPI Code for SI4010C2 Remotes

Job ID: 40245253

Budget: $10 – $30 CAD

I am working with Silicon Labs’ SI4010C2 RF remotes and need reliable, well-documented SPI firmware to drive the device. Your job is to write clean, interrupt-safe C code (with concise inline comments) that initializes the SI4010C2 SPI interface, handles full-duplex transfers, and exposes a simple, reusable API so I can drop it into my existing project without major refactoring.

Scope of work
• Configure the SI4010C2 SPI peripheral for both master and slave use, selectable at compile time.
• Provide send, receive, and combined read-write routines that support variable frame lengths.
• Include a minimal example showing the code transmitting a test payload and reading it back on a logic analyzer.
• Supply a short README that explains clock settings, pin mapping, and any compiler options required.

Acceptance criteria
1. Code compiles under Silicon Labs’ 8-bit toolchain (SDCC or Keil).
2. A logic-analyzer capture demonstrates correct MOSI/MISO timing for an 8-byte transfer at 1 MHz.
3. API functions are documented and return explicit status codes for success, timeout, or bus fault.

I will flash and bench-test on real hardware; once the three checkpoints above pass, the project is complete.