使用HTTP进行OTA升级有时成功,有时失败，CRC校验提示是什么...

发布于 2020-02-13 12:00:59 浏览：3458 订阅该版

整个升级过程如下，从bootloader烧录开始

1.bootloader烧录
![21.png](/uploads/202002/13/120506pww8xd3w8o996wz2.png)
```
[E]Get firmware header occurCRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'download'partition![E]Get OTA download partition firmwareheader failed!
[E]Getfirmware header occur CRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff)error on 'app' partition
```

2.下载1.00程序
![22.png](/uploads/202002/13/120545aulbk30vlx3kxk3r.png)
```
[I]RT-Thread OTA package(V0.2.1) initializesuccess.
[E]Get firmware header occurCRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'download'partition![E]Get OTA download partition firmwareheader failed!
[E]Get firmware header occurCRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'app' partition!
```

3.打包2.00程序 用于HTTP升级
打包信息如下
![27.png](/uploads/202002/13/120750od0lszlma8aa30v2.png)

挂上服务器进行下载 进行升级为2.0.0版本

![28.png](/uploads/202002/13/120853pxwwexwg00puaa0w.png)
```
[I]RT-Thread OTA package(V0.2.1) initializesuccess.
[E]Get firmware header occurCRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'app' partition!
[E]Get 'app' partition firmware headerfailed! This partition will be forced to upgrade.
[I]Verify 'download' partition(fw ver:2.0.0, timestamp: 1581565642) success.
[E]Get firmware header occurCRC32(calc.crc: 7b93c5c8 != hdr.info_crc32: ffffffff) error on 'app' partition
![I]OTA firmware(app) upgrade startup.
[I]The partition 'app' is erasing.
[I]The partition 'app' erase success.
[I]OTA Write: [>                                                                                                   ]0%[I][2A[I]OTAWrite: [===>  
```
![29.png](/uploads/202002/13/120905bbtmhqyyqt0s86ht.png)

```
[I]OTA Write:[=======================>     ] 94%
[I][2A[I]OTA Write:[=====================================>   ] 96%
[I][2A[I]OTA Write:[====================================================>]99%
[I][2A[I]OTA Write:[========================================================]100%
[I]Verify 'app' partition(fw ver: 2.0.0,timestamp: 1581565642) success.[32;22m
[I/FAL] Find user firmware at apppartition 0x08010000 successfully.[0m[32;22m
[I/FAL] Bootloader jumps to userfirmware now.
 \ |/- RT -    Thread Operating System
 / |\     4.0.2 build Feb 12 2020 
 2006- 2019 Copyright by rt-thread team
 I/at.clnt: AT client(V1.3.0) ondevice uart2 initialize success. 
 I/sal.skt: Socket AbstractionLayer initialize success. 
 (fal_flash_init:61) Flash device|onchip_flash 
addr:0x08000000 | len: 0x00080000 | blk_size: 0x00000800 |initialized finish.
==================== FALpartition table ====================
[I/FAL] | name     | flash_dev    |  offset   |    length [I/FAL]-------------------------------------------------------------
[I/FAL] | bl       | onchip_flash | 0x00000000 | 0x00010000|
[I/FAL] | app      | onchip_flash | 0x00010000 | 0x00030000|
[I/FAL] | download | onchip_flash |0x00040000  | 0x00038000|[I/FAL]=============================================================
[I/FAL] RT-Thread Flash AbstractionLayer (V0.4.99) initialize success.[0m
```
看到最后成功升级到2.0.0版本

4.打包3.00程序 用于HTTP升级
打包信息如下
![30.png](/uploads/202002/13/121116sc45xrwt8tztrvdm.png)

升级失败
![31.png](/uploads/202002/13/121225qy713ppqt31yp0yq.png)

发现这里的校验和之前的不同
```
[I]RT-Thread OTA package(V0.2.1) initialize success.
[E]Verify firmware CRC32(calc.crc: 45b1a272 != hdr.crc: cc630c22) failed on partition 'download'.
[I]Verify 'app' partition(fw ver: 2.0.0, timestamp: 1581565642) success.
[32;22m[I/FAL] Find user firmware at app partition 0x08010000 successfully.[0m
```
不是```!= hdr.info_crc32: ffffffff```

多次尝试都是这样，有时可以升级 有时不可以，但是一旦出现一次吗，没有升级成功 ，就再也升级不成功了