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刘晓红

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[问答]

RN4677上电问题

我有一个新的设计与RN467 7。我有3.3 V到BATZIN,2.8 V到VDDIO,SWI BTN H,CTS低。根本不存在无线电活动(蓝牙无法检测到),并且无法进入命令模式。我想知道是否有一些你必须遵循的权力排序。在我的设计中,VDDIO是第一个,然后是SWB-BTN高,然后是BAtiIN。

以上来自于百度翻译


      以下为原文

    I have a new design with the RN4677. I have 3.3 V to BAT_IN, 2.8 V to VDDIO, SW_BTN H, CTS low. There is no radio activity at all, (Bluetooth not detectable) and it is not possible to enter command mode. I wonder if there is some power sequencing that you have to follow. In my design VDDIO comes first, then SW_BTN high, and then BAT_IN later.

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杨叶

2019-5-22 14:16:05
嗨,你能对照RN-4677-PICTAILIN检查一下你的硬件原理图吗?用户手册上有一个原理图,你可以用它作为你自己设计的指南。

以上来自于百度翻译


      以下为原文

    Hi,
Can you please check your hardware schematic against the RN-4677-PICTAIL
In the user manual there is a schematic which you can use as a guideline for your own design.
Regards
 
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陈晨

2019-5-22 14:21:21
如果正确,您将在115200波特时获得%REBOOT%。但是我认为它是Power,Button,等1秒钟。查看Eval模块的代码。

以上来自于百度翻译


      以下为原文

    If you have it right you will get %REBOOT% at 115200 baud.
But I think it is Power, Button, wait 1 second.
 
Look at the Code for the Eval Module.
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李桂芳

2019-5-22 14:36:29
我试图按照文档进行操作,但是非常草率。模块在启动时总是输出%REBOOT%吗?它也在重置吗?

以上来自于百度翻译


      以下为原文

    I have tried to follow the documentation, but it is rather sloppy.
Will the module always output %REBOOT% at power-up? Is it also doing that on reset?
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李桂芳

2019-5-22 15:21:05
我现在开始工作了。你不应该遵循数据表中的原理图。VDDYIO也不是很早就显得很重要。当我将SWI BTN连接到BATZIN并使用LDO3IO来驱动VDDYIO时,它对我起了作用。

以上来自于百度翻译


      以下为原文

    I have it working now. You should not follow the schematics in the data sheet. It also seems important that VDD_IO is not high to early. It worked for me when I connect SW_BTN to BAT_IN and uses LDO33_O to drive VDD_IO.
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