Content originally posted in LPCWare by tbelo on Sun Jun 28 02:25:26 MST 2015
I want ask about an issue on exceptions on lpc11xx(XL).
On a project that uses deep-sleep and power-down mode which exception to use ?
In deep-sleep, wakeup handler and reset can be used (nmi doesn't respond),
In power-down, the wakeup pin can be used (reset doesn't respond),
In normal mode, the nmi handler and reset can be used.
While in power-down mode, the wakeup pin must be used as nmi but you can't have control in deep-sleep mode.
While in deep-sleep mode, the wakeup handler pin (start logic STARTAPRP) must be used but you can't have control in power-down mode.
I can only think about hardwire the wakeup pin with a wakeup handler (or reset) pin in a wired-OR connection.
Am I missing something ?
Is there any proposed solution on such issues ?
Regards,
Theodore