EOSS 2023.pdf

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1、#EMBEDDEDOSSUMMITAdding Coredumps To Your Debugging ToolkitEric Johnson,Memfaultejohnso49#EMBEDDEDOSSUMMITAbout Me:-Firmware Solutions Engineer Memfault-Previously:Walgreens Health,Athos,Acuity Brands,Lexmark-First encountered Zephyr at OSS 2018-Met Tyler Hoffman at ZDS 2022-Contributor of humble bu

2、g fixes to BLE,Kernel,Shell subsystems Coredumps Overview Coredumps+Zephyr Zephyr Asserts and Fault Handling Subsystem Components Host Tools Scripting Demo!Future WorkLogging is great,untilPanics are great,but only show 1 frame-Triggered by faults,kernel panics,asserts-Captures registers and memory

3、to allow for later analysis-Data can be streamed out immediately or stored in non-volatile memoryCoredumpsCoredump ComponentsZephyr Assertion Call GraphZephyr Fault Handling Call GraphCoredump SubsystemDevice Region Example#EMBEDDEDOSSUMMITCoredump Host Tools-GDB can be built with Python extension s

4、upport-Zephyr toolchain defaults to no-py version-Use Python with“-py”-Requires matching system Python install-Use venv+gdbundle to manage packagesScripting Extensions#EMBEDDEDOSSUMMITDemo!ISR-safe Flash backed:See issueAllow application to override linker memory regionEncourage users to submit core

5、dumps with bugs/issuesAdd example using flash simulation region for backendExtend west to convert log output and run coredump serverFuture W To Find MeView tasks,stack traces,registers,and local variablesCoredumps in MemfaultView all global variables at time of coredumpCoredumps in Memfault#EMBEDDEDOSSUMMITAcknowledgements:-Coredump subsystem maintainers and contributors-Coredump:A brief introduction and demo by Daniel Leunghttps:/