Troubleshooting real-time softwa issues using a logic analyzer

摘要

While many embedded software issues can be debugged using either print statements or symbolic debuggers (such as JTAG tools), there are many instances where neither of those methods can help. For example, suppose the problem is in an interrupt handler that is executing ten thousand times per second. It's not practical to put print statements as that will ruin the real-time execution. Adding breakpoints to monitor the interrupt will likely break functionality.