On-line upgrade method of single-chip microcomputer

Abstract

The invention discloses an online upgrade method of a single-chip microcomputer. 1. ARM sends an upgrade notification command to the single-chip microcomputer. After the single-chip microcomputer receives the upgrade notification command, the single-chip microcomputer performs a reset operation, and then the single-chip computer runs a guide download program and reads an upgrade flag in the guide download program. 2. The single-chip microcomputer sends a notification command to enter the upgrade mode to the ARM, and the ARM sends the required upgrade data packet to the single-chip microcomputer according to the upgrade data packet transmission protocol, and the single-chip computer stores the received upgrade data packet in the internal memory of the single-chip computer; 3. The single-chip microcomputer Erase the upgrade flag and reset the operating program in the boot download program, the single-chip microcomputer reruns the boot download program, the running command in the single-chip microcomputer jumps to the entry address of the application program, and starts running the application program. The invention can be well compatible, avoids re-development of the upgrading scheme, and improves the development efficiency.

Description

technical field [0001] The invention relates to the technical field of single-chip microcomputers, in particular to an online upgrading method of single-chip microcomputers. Background technique [0002] In each product equipment integrated with single-chip microcomputer control, the function of online upgrade for single-chip microcomputer is becoming more and more intense. But the current MCU online upgrade solutions are all customized solutions, that is, developers customize and develop their own products (that is, upgrade solutions developed according to the characteristics of the MCU platform and the technical support provided by the chip supplier, such as the ISP (InSystem Programming, system online programming) upgrade and NXP (NXP Semiconductors) SPI (SerialPeripheral Interface, serial peripheral interface) upgrade, etc.) or an online upgrade solution provided by the microcontroller supplier. Specifically, for the above-mentioned first upgrade plan, the ISP upgrade o...

AI Technical Summary

Problems solved by technology

This kind of solution has strong dependence on single-chip microcomputer platform and poor compatibility. This kind of upgrade solution targeted at a certain platform or directly provided by chip manufacturers has poor compatibility and applicability.

When the product is being updated (the platform of the single-chip microcomputer is replaced), the above-mentioned customized upgrade solution may not be compatible with the updated device or module (the control platform is replaced)

[0003] Today's products are becoming more and more complex. There are often multiple single-chip microcomputer control modules of different platforms in a product. The existing customized platforms are difficult to be compatible. It is necessary to re-develop and upgrade solutions for each single-chip microcomputer, resulting in a long development time.

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