Interrupt processing method, master chip, slave chip, and multi-chip system

A master chip, comprising an interrupt controller, a Micro Controller Unit (MCU), and an interrupt detection module, wherein the interrupt controller is respectively connected to the MCU and the interrupt detection module and wherein:

• the interrupt detection module is configured to send, when detecting that there is an interrupt transport request sent by a slave chip on an interrupt line, the interrupt transport request to the interrupt controller, wherein the interrupt transport request is a level signal;
• the interrupt controller is configured to send an interrupt request acquisition notification to the MCU when receiving the interrupt transport request;
• and
• the MCU is configured to obtain all current interrupt requests of the slave chip when receiving the interrupt request acquisition notification, obtain an interrupt subroutine corresponding to each interrupt request of all the current interrupt requests, and process the corresponding interrupt request by using the interrupt subroutine, and the interrupt transport request is generated by a first peripheral of the slave chip, wherein all current interrupt requests of the slave chip are mapped to the master chip in advance, and each interrupt request mapped to the master chip has a corresponding interrupt subroutine on the master chip.

A multi-chip system, comprising:

• at least one slave chip, each comprising a first communication interface;
• and
• a master chip, comprising a second communication interface connected to the first communication interface through an interrupt line, and the master chip comprises an interrupt controller, a MCU, and an interrupt detection module, wherein:
• the interrupt controller is respectively connected to the MCU and the interrupt detection module;
• the interrupt detection module is configured to send, when detecting that there is an interrupt transport request sent by the slave chip on the interrupt line, the interrupt transport request to the interrupt controller, wherein the interrupt transport request is a level signal;
• the interrupt controller is configured to send an interrupt request acquisition notification to the MCU when receiving the interrupt transport request;
• and
• the MCU is configured to obtain all current interrupt requests of the slave chip when receiving the interrupt request acquisition notification, obtain an interrupt subroutine corresponding to each interrupt request of all the current interrupt requests, and process the corresponding interrupt request by using the interrupt subroutine, and the interrupt transport request is generated by a first peripheral of the slave chip, wherein all current interrupt requests of the slave chip are mapped to the master chip in advance, and each interrupt request mapped to the master chip has a corresponding interrupt subroutine on the master chip.