关键词: 固件升级, 串口Ymodem, 断点续传

Abstract: A scheme of IAP (in application programming) firmware update based on ARM controller CKS32F103CBT6 was designed, which systematically studied IAP technology. The bootloader program realized internal flash area division, serial Ymodem protocol communication and firmware update requests. Simultaneously, the design concepts of breakpoint resume, database encryption and storage verification were proposed. Experimental results showed that improving the reliability and security greatly and avoiding the error code and interference in the update process, this sheme could be used to realize firmware update. The program could resume the old status when the firmware update was failure, which had error correction capability and certain practical value and popularization value.

Key words: firmwareupdate, serialYmodem, breakpointresume