基于TMS320F28335的二次Bootloader在线升级方法  

Online upgrade method of second bootloader based on TMS320F28335

作　　者：许化 黎蕾 倪云龙 余国良 Xu Hua;Li Lei;Ni Yunlong;Yu Guoiang(NO.58 Research Institute of China Electronics Technology Group Corporation,Wuxi 214072,China)

机构地区：[1]中国电子科技集团公司第五十八研究所,江苏无锡214072

出　　处：《电子技术应用》2023年第3期139-142,共4页Application of Electronic Technique

摘　　要：为避免TMS320F28335在程序升级过程中需要执行打开嵌入式设备、额外配置GPIO管脚电平或单独开发专用上位机软件的操作,提出了一种二次Bootloader方法来实现应用程序的在线升级。将TMS320F28335配置为Flash启动模式,通过预烧写二次Bootloader程序,将通用串口上位机软件下发的应用程序bin文件存储在TMS320F28335的外扩SRAM中,执行将应用程序烧写到片上Flash指定区域的操作,并跳转执行应用程序,实现应用程序的在线升级功能。实验结果表明,该方法有效可行,具有较强的通用性和可靠性。To avoid the operations of opening embedded device, configuring GPIO pin voltage level, or developing the special upper computer software during the online upgrade process of application program for TMS320F28335, a second bootloader method was proposed. To realize the online upgrade function of application program, TMS320F28335 was configured as Flash boot mode, and the second bootloader was pre-burned. The application program binary file from general serial port upper computer software was stored in the external extended SRAM of TMS320F28335, and was downloaded to on-chip Flash. And then, the system jumps to execute the application program. The experimental results show that this method is effective and feasible, and it has strong universality and reliability.

关 键 词：TMS320F28335 DSP 二次Bootloader 在线升级 串口通信 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]