Peripheral Control Function | Dataford Interview Questions

Write a function to control a peripheral device based on specific inputs.

Implement peripheral_commands(readings), where each integer uses bit 0 for the requested state, with 1 meaning active and 0 meaning deactivated, and bit 1 as an emergency flag. Return one command for each reading. Require two consecutive non-emergency readings requesting a state change before returning ACTIVATE or DEACTIVATE; otherwise return NOOP. An emergency reading returns SAFE_STOP and permanently latches the controller in safe-stop mode, so later non-emergency readings return NOOP.

Constraints

1 <= len(readings) <= 1000
Each reading is an integer from 0 through 3
Bit 0 requests the normal state: 0 means deactivated and 1 means active
Bit 1 indicates an emergency condition
The output contains exactly one command for each input reading
Emergency mode remains latched for the rest of the input

Function Signature

def peripheral_commands(readings):

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Problem

Write a function to control a peripheral device based on specific inputs.

Constraints

1 <= len(readings) <= 1000
Each reading is an integer from 0 through 3
Bit 0 requests the normal state: 0 means deactivated and 1 means active
Bit 1 indicates an emergency condition
The output contains exactly one command for each input reading
Emergency mode remains latched for the rest of the input

Function Signature

def peripheral_commands(readings):

Your question is Peripheral Control Function. 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.