Resume the state of registers and memory

Question

Hi There, 
 I try to develop an application in intermittent conditions, it will off work frequently as for lacking the energy. 
 I try to resume the application from the last losing point rather than the starting point. 
 How should I do? 
 
 Regards, 
 Gaosheng Liu

Karl Ylvisaker · Accepted Answer

Hello, 
 I try to develop an application in intermittent conditions, it will off work frequently as for lacking the energy. 
 How frequent and how long are these sleep intervals? 
 I try to resume the application from the last losing point rather than the starting point. 
 If you would like it to resume from the previous point, rather than from reset, you will need to use SYSTEM_ON sleep . In SYSTEM_ON sleep the CPU is idling in a low-power state, and will wake on any event. SYSTEM_OFF sleep has the lowest power consumption, but it will reset on wake. You could see how SYSTEM_ON sleep is implemented and used in the ble_peripheral examples of the SDK. The idle_state_handler function puts the CPU in SYSTEM_ON sleep from the main context. Best regards, Karl

Resume the state of registers and memory

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