Content originally posted in LPCWare by mengeriser on Thu Oct 25 11:36:05 MST 2012 Can the UART wake the 1788 from deep-sleep or power-down modes?
This is from UM10470:
3.12.8 Wake-up from Reduced Power Modes Any enabled interrupt can wake up the CPU from Sleep mode. Certain interrupts can wake up the processor if it is in either Deep Sleep mode or Power-down mode. Interrupts that can occur during Deep Sleep or Power-down mode will wake up the CPU if the interrupt is enabled. After wake-up, execution will continue to the appropriate interrupt service routine. These interrupts are NMI, External Interrupts EINT0 through EINT3, GPIO interrupts, Ethernet Wake-on-LAN interrupt, Brownout Detect, RTC Alarm, CAN Activity Interrupt, and USB Activity Interrupt. For the wake-up process to take place the corresponding interrupt must be enabled in the NVIC. For pin-related peripheral functions, the related functions must also be mapped to pins.
This seems to indicate no, but wanted confirmation. If not, is there another way to do it? Tie UART pin to GPIO and use GPIO interrupt?
Content originally posted in LPCWare by noahk on Sat Nov 17 23:35:59 MST 2012 Hi Matt,
The recently released LPC800 family includes a new USART which is capable of waking up the CPU. The user manual refers to Synchronous Slave Mode which is capable of running the USART from an external clock and waking up the CPU.