Method and device for waking up a controller

1. A method for waking up a Microcontroller Unit (MCC), comprising;

determining, by a first MCC, whether a second MCU is in a deep sleep state, when the first MCU triggers a communication event of transmitting data to the second MCU; and

when the second MCU is in the deep sleep state, sending, by the first MCU, an interrupt wakeup signal to the second MCU via a wakeup pin of the second MCU that is in electrical communication with the first MCU, so as to wake up the second MCU;

wherein determining whether the second MCU is in a deep sleep state comprises:

obtaining a pre-stored state parameter of the second MCU in a register of the first MCU according to a first state updating message sent by the second MCU wherein the pre-stored state parameter is updated according to a state updating message; and

when the pre-stored state parameter of the second MCU indicates the deep sleep state, determining that the second MCU is in the deep sleep state.

2. The method according to claim 1 , wherein determining whether the second MCU is in a deep sleep state comprises:

sending a detecting message to the second MCU via a communication interface between the first MCU and the second MCU; and

when no response message returned from the second MCU is received within a preset period, determining that the second MCU is in the deep sleep state.

3. The method according to claim 1 , further comprising:

receiving a second state updating message sent by the second MCU, where a state parameter carried in the second state updating message indicates a working, state; and

determining that the second MCU has, been woken up according to the second state updating message, and transmitting data to the second MCU via a communication interface between the first MCU and the second MCU.

4. The method according to claim 3 , further comprising:

updating the pre-stored state parameter of the second MCU according to the state parameter carried in the second state updating message.

5. A device, comprising:

a first Microcontroller Unit (MCU);

a second MCU in communication with the first MCU via a wakeup pin connected between the first MCU and the second MCU;

wherein the first MCU is configured to;

determine whether the second MCU is in a deep sleep state, when the first MCU triggers a communication event of transmitting data to the second MCU;

when the second MCU is in the deep sleep state, send an interrupt wakeup signal to the second MCU via the wakeup pin to wake up the second MCU;

obtain a pre-stored state parameter of the second MCU, where the pre-stored state parameter of the second MCU is determined according to a first state updating message sent by the second MCU wherein the pre-stored state parameter is updated according to a state updating message; and

if the pre-stored state parameter of the second MCU indicates the deep sleep state, determine that the second MCU deep sleep state.

6. The device according to claim 5 , wherein the first MCU is configured to:

send a detecting message to the second MCU via a communication interface between the first MCU and the second MCU; and

if no response message returned from the second MCU is received within a preset period, determine that the second MCU is in the deep sleep state.

7. The device according to claim 5 , wherein the first MCU is further configured to:

receive a second state updating message sent by the second MCU, where a state parameter carried in the second state updating message indicates a working state; and

determine that the second MCU has been woken up according to the second state updating message, and transmit data to the second MCU via a communication interface between the first MCU and the second MCU.

8. The device according to claim 7 , wherein the first MCU is further configured to:

update the pre stored state parameter of the second MCU according to the state parameter carried in the second state updating message.

9. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a first Microcontroller Unit (MCU) of an intelligent device, causes the first MCU to:

when the first MCU triggers a communication event of transmitting data to a second MCU, determine whether the second MCU is in a deep sleep state: and

when the second MCU is in the deep sleep state, send an interrupt wakeup signal to the second MCU via a wakeup pin connected between the first MCU and the second MCU, so as to wake up the second MCU;

wherein to determine whether the second MCU is in a deep sleep state, the instructions further comprise instructions to cause the first MCU to:

obtain a pre-stored state parameter of the second MCU, where the pre-stored state parameter of the second MCU is determined according to a first state updating message sent by the second MCU wherein the pre-stored state parameter is updated according to a state updating message; and

if the pre-stored state parameter of the second MCU indicates the deep sleep state, determine that the second MCU is in the deep sleep state.

10. The storage medium according to claim 9 , wherein determining whether the second MCU is in a deep sleep state comprises:

sending a detecting message to the second MCU via a communication interface between the first MCU and the second MCU; and

if no response message returned from the second MCU is received within a preset period, determining that the second MCU is in the deep sleep state.

11. The storage medium according to claim 9 , wherein the instructions further comprise instructions to cause the first MCU to:

receive a second state updating message sent by the second MCU, where a state parameter carried in the second state updating message indicates a working state: and

determine that the second MCU has been woken up according to die second state updating message, and transmit data to the second MCU via a communication interface between the first MCU and the second MCU.

12. The storage medium according to claim 11 , wherein the instructions further comprise instructions to cause the first MCU to:

update the pre-stored state parameter of the second MCU according to the state parameter carried in the second state updating. message.