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boot的选择 #7

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jiantoushi opened this issue Feb 27, 2019 · 4 comments
Open

boot的选择 #7

jiantoushi opened this issue Feb 27, 2019 · 4 comments

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@jiantoushi
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请教一下怎样选择boot

@RockySong
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这个板子没有boot脚。仅当固件损坏变砖才需要

  1. 用电烙铁先去掉电阻R4(正面,镜头底座左下),R2(背面与R4接近的位置);
  2. 短接R1(在R4旁边)和R5(在R2旁边)
  3. 重新连接J-Link,在KEIL中重新下载程序固件;
  4. 断开R1, R5,
  5. 重焊R2和R4,或者直接短接。
    具体原理可参考原理图(omvrt1_sch.pdf)中的“BOOT”部分介绍,截图如下,默认的启动方式是”Internal Boot(NormalBoot)”, 补救时改用”Serial Download(Bootloader)”,请勿尝试其它启动方式!

@jiantoushi
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谢谢您,我已经解决了,移植到了野火公司的rt1052的板子上了。

@RockySong
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非常好啊!野火对我们的RT1050/1060支持力度很大的

@jiantoushi
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嗯嗯,就是SD卡不太一样

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