A single-wire interface method for on-chip debugging

An on-chip debugging, single-wire technology, applied in the field of integrated circuits, can solve the problems of occupying a lot of resources and low efficiency, and achieve the effect of simple interface design, fast debugging information, and stable communication protocol design.
CN107748805BActive Publication Date: 2022-05-06HEFEI CHIPSEA ELECTRONICS TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI CHIPSEA ELECTRONICS TECH CO LTD
Publication Date
2022-05-06

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Abstract

The invention discloses a single-line interface method for on-chip debugging. The method is realized by a hardware part and a software part, the hardware part is realized by a microprocessor, the microprocessor has a single-line interface, and the microprocessor performs signal encoding and decoding through digital logic Finally, serial-to-parallel conversion is performed to obtain a parallel control bus, which is finally combined with the microprocessor bus to control the on-chip peripherals of the MCU through a single-wire interface. The software part encodes and decodes the signal through the underlying functions of the software, and then passes the converted byte information to the upper layer as a function parameter, and finally passes it to the PC through the USB protocol.
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Description

[0001] method field

[0002] The invention belongs to the field of integrated circuit methods, in particular to an interface method for on-chip debugging. Background technique

[0003] In the MCU core based on the on-chip debugging module (In-Circuit Debug, ICD), it is the core technology for real-time simulation debugging of embedded systems. The most important technical module of ICD technology is the debugging port communication technology.

[0004] At present, the debugging technology of MCU mainly includes ICE (In-Circuit Emulation) and ICD. Compared with ICE technology, the biggest feature of ICD technology is on-chip debugging, that is, single-step debugging directly on the real MCU, with high real-time performance, and the results of debugging and running are basically the same as the final running results. Foreign microcontroller manufacturers, such as TI's MSP430 series, ARM's Cortex series, etc., have their own debugging patented technology. General debugging te...

Claims

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