scb_diag_demo Directory Reference

Directory dependency graph for scb_diag_demo:

Directories
	src

Detailed Description

Drives the ra8_scb driver – the one abstraction over the Arm v8-M System Control Block (PPB window 0xE000ED00) that the exception decoder, the DFU copy-to-run launcher and the ITM log transport otherwise reach raw – and prints what those call sites read for themselves, so the HAL primitive can be diffed against them on the bench (#583).

Once per second it:

1. Queries the vector-table base with ra8_scb_get_vtor(), the primitive the DFU launcher writes to relocate the table. It only queries VTOR; it never relocates the live table.
2. Powers the trace block up with ra8_scb_trace_enable() (DEMCR.TRCENA, the bit the log transport pre-checks) and confirms the enable reads back set.
3. Reads one fault-status snapshot – CFSR / HFSR / DFSR / MMFAR / BFAR / AFSR plus the Secure SFSR / SFAR pair, the set the exception decoder reads – and logs every register.

On a clean boot with no fault injected, every fault-status register reads zero. Bare EK-RA8D2, no expansion board.