STM32L475+ESP8266+机智云，OTA时bootloader验证新固件时MD5不通过

半生少年

MCU：STM32L475，通过正点原子esp8266模块连接机智云。温湿度上传和控制开发板LED在机智云APP上都正常。
想实现OTA，参考MCU OTA3.1版本移植，程序下载机智云新固件正常，MD5检验也对的，但重启进入bootloader检验已经下载的固件MD5不一致，升级失败。从最后一个数据包下载，串口打印如下：
Get One Packet!
WiFi2MCU[328870: 205]: ff ff 00 c9 1d 6f 00 00 01 62 01 62 00 00 00 00 0f 00 00 00 05 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 09 3d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ff ff 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20 04 08 00 00 00 00 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 21
**piecenum = 354 , piececount = 354, pieceSize = 192***
MD5 Calculate Success , Will Check The MD5 ..
d0 ef 71 42 d7 ed  9 29 7f 23 1e 3e d5 a7 a0 ce
d0 ef 71 42 d7 ed  9 29 7f 23 1e 3e d5 a7 a0 ce
（我把SSL和MD5都打印出来了，的确是一样的）
MD5 Check Success ,Storage  ROM Success , Write Update Flag
System Will Restart... Boot ready to run
Update Task ,Sys Will Load New Sys..Wait For A Moment
Update Size [90560]
Check New Sys ...loop = 354
**********************************************************************************************************
MD5 Calculate Success
d0 ef 71 42 d7 ed 9 29 7f 23 1e 3e d5 a7 a0 ce
35 16 ac 3f 41 1d 3 3c c3 ee fd 90 d0 f7 f0 b1
（我还是把SSL和MD5都打印出来了，的确不一样）
Md5_Cacl Check Faild ,MCU OTA Faild
MD5: 35 16 ac 3f 41 1d 03 3c c3 ee fd 90 d0 f7 f0 b1
Check Faild , Go to Old Systerm
Sys Will Load APP.....


这个问题搞了Ｎ天了，恳求大神帮指点指点，谢谢

半生少年

没有个大神帮忙建议建议吗？多谢啦

冯俊波

MD5不一致检查存储前后数据是不是有所改变或者没存储进去，还有最后不足1k的检验处理情况