3.10.2. Guidelines

Dm3StdErr and Dm3Trace both act as a virtual serial port (terminal emulation) session to the DM3 board, but they differ as follows:

• If the firmware prints out a string using the qPrintf() function call, the output string goes to the com port/dm3Stderr window.
• If the firmware prints out a string using the qTrace() function call, the output string goes to Dm3Trace.
• Dm3StdErr requires a board number, but Dm3Trace requires both a board number and a processor number
• Dm3StdErr posts qPrintf() from all the processors on a board, but Dm3Trace posts qTrace() from the indicated processor
• Dm3Trace allows for an optional argument: trace level, which is a bit mask allowing up to 24 simultaneous active trace levels, whereas Dm3Trace will filter out the output of qTrace() that is not in the current trace level.

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