Topic

Python

Python runs on your PC, next to the board. Eight short insights take you from the REPL to a script that turns a serial log into a spreadsheet. Each one is a 3-minute read with a diagram, code that runs, and the output it prints.

Read the first insight

scan.pyPython

log = """00:01 INFO boot ok00:05 ERROR i2c timeout00:09 ERROR i2c timeout"""errors = [l for l in log.splitlines()          if "ERROR" in l]print(len(errors), "errors")

Output

2 errors

Insights

Python as your workbench

The REPL, scripts, and why Python lives next to the board.

3 min read
Values and types

int never overflows, and str is not bytes.

3 min read
Bits, hex and masks

Decode a register value in three lines.

3 min read
Decisions and loops

Sort log lines, and retry until the board answers.

3 min read
Functions and modules

Small helpers you can import into every script.

3 min read
Bytes and struct

Turn raw bytes from a sensor into numbers you can trust.

3 min read
Classes

A frame parser that keeps its own state.

3 min read
Automating the bench

From a serial log to a CSV in one script.

3 min read