Peripheral Driver Register Configuration | Dataford Interview Questions

Given a hardware register map, write a driver snippet to configure a peripheral in Intuitive embedded systems.

Implement the function below. Return dependency-ordered (address, value) writes, preserving unspecified reset bits and rejecting invalid field values, read-only fields, overlapping masks, unknown fields, duplicate addresses, or dependency cycles. Each register contains name, address, reset, width, fields, and optional after; each field contains name, mask, shift, and access (rw, ro, or w1c). settings maps register names to requested field values. Return None for invalid input.

Constraints

1 <= len(register_map) <= 10^4
1 <= width <= 64
Register addresses and names are expected to be integers and strings respectively
Field masks are positive integers within the register width
Field masks within one register must be non-overlapping and contiguous after shifting
Each dependency names a register in register_map
settings contains zero or more configured fields per register

Function Signature

def configure_peripheral(register_map, settings):

Your question is Peripheral Driver Register Configuration. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Given a hardware register map, write a driver snippet to configure a peripheral in Intuitive embedded systems.

Constraints

1 <= len(register_map) <= 10^4
1 <= width <= 64
Register addresses and names are expected to be integers and strings respectively
Field masks are positive integers within the register width
Field masks within one register must be non-overlapping and contiguous after shifting
Each dependency names a register in register_map
settings contains zero or more configured fields per register

Function Signature

def configure_peripheral(register_map, settings):

Your question is Peripheral Driver Register Configuration. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.