Q: What are the best STM32 debug tools and techniques for production testing?
Answer
Production testing tools: (1) ST-Link V2 or V3 for programming and boundary scan. (2) STM32CubeProgrammer CLI for automated flash verification. (3) JTAG/SWD gang programmers for high-volume production. (4) Functional test using UART echo with firmware checksum to verify flash integrity. (5) Current measurement: use a shunt resistor on VDD to detect anomalous power draw indicating flash errors. Use pre-flash test firmware that verifies RAM/clock before main firmware flash. Use OTP write for unique serial numbers. For boundary scan (JTAG chain) use IEEE 1149.1 TAP controllers on STM32 to test PCB interconnects.
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