jflash添加芯片_利用J-Link烧写SPI串行Flash存储器方法

J-Flash SPI是个单独的软件，如果你找不到，可能要升级到相对高一点的版本。我这是5.02的。项目采用默认的就行。

图1. 软件界面

打开要写入存储器的数据文件。File->Open data file (+O)

图2. 我的路由器是WR703N，4M改16M Flash

图3. 起始地址不用改

图4. 数据已备好

试着连接SPI存储器，软件会采用标准的读Flash ID过程尝试识别芯片型 。读到的三字节ID为： 0xEF 40 18(0xEF是华邦的Manufacturer ID，0x4018是W25Q128FV的Device ID)。J-Flash SPI支持的芯片列表：https://www.segger.com/jlink_supported_devices.html#SupportedSPIFlashes

图5. 除了正确识别出芯片外，软件还列出该芯片的各操作命令代码

自动烧写就好。Target->Auto()

图6. 先回读

图7. 烧写

图8. 完成

截图稍微简化了过程。

软件的Auto自动操作步骤从读取存储器原始内容开始，与准备烧写的内容进行比较，如果数据完全相同则直接结束。如果要烧写的区块原片为已擦除或者原片为空片则进入烧写过程，否则要对需要的区块进行擦除操作。烧写后再次读回校验，数据完全一致则烧写成功。

一次完整的烧写过程可能有以下提示：

Connecting … – Connecting via USB to J-Link device 0

– VTarget = 4.258V – Read SPI Flash Id = 0xEF 40 18 00 00 00 00 00 00 00 00 00 00 00 00 00

– Found SPI Flash: Winbond W25Q128FVSIG – Connected successfully

Disconnecting … – Disconnected

Auto programming target (16777216 bytes, 1 range) … – Connecting …

– Connected successfully – Reading affected sectors …

– Target memory read successfully. (16777216 bytes, 1 range) – Erasing affected sectors …

– Erase operation completed successfully – Programming target (0 bytes, 0 ranges) …

– Target programmed successfully – Verifying target (0 bytes, 0 ranges) …

– All loaded bytes verified OK! – Target erased, programmed and verified successfully – Completed after 158.982 sec

Erasing chip … – Erasing 256 sectors, 1 range, 0x0 – 0xFFFFFF

– Erase operation completed successfully – Completed after 55.154 secAuto programming target (16777216 bytes, 1 range) …

– Reading affected sectors …    – Target memory read successfully. (16777216 bytes, 1 range)

– Erasing affected sectors …    – Erase operation completed successfully

– Programming target (3803392 bytes, 8 ranges) …    – Target programmed successfully

– Verifying target (3803392 bytes, 8 ranges) …    – All loaded bytes verified OK!

– Target erased, programmed and verified successfully – Completed after 138.177 sec

利用J-Link烧写SPI串行Flash存储器(后续)

http://bbs.mydigit.cn/read.phpd=2056681

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