The Debugger Access Level (DSU STATUSB.DAL) defines the access rights of a
debugger connected to the device.
- 0x0 = Access to very limited features
(basically only the DSU external address space)
- 0x1 = Access to all non-secure
memory; can debug non-secure CPU code (SAM
L11 only)
- 0x2 = Access to all memory; can debug
secure and non-secure CPU code
DAL can be set to a lower setting using a SDAL command (CTRLA register).
Important: Issuing a SDAL command
to set a higher setting for DAL will set INTFLAG.PROGE.
Only a Chip Erase can change DAL to a higher setting.