您好!
I have two DA14695-00HQDEVKT-U kits and have loaded the WiRa ranging sample app from the WiRa SDK.
我没有mikrobus显示，但是这是可以的，因为我已经从构建中定义了它。
I have the two devices connected to terminal emulators and I can see the outputs on power up.
When I have the default power setting :- 5V from VBUS J2:pin2-3 I can see the initiator connect to the responder and I see the distance being shown.
Wonderful.
这些都和我的电脑有关。
So I thought let me now power the responder via J3:pin1-2 so that there is power on the VBAT pin of rh 14695 and obviously 0v on VBUS because there is no jumper on J2.
I was expecting to see the initiator to connect to the responder and show me some range readings --不起作用.
（我强调，启动器只是显示“未找到外围设备”）
Which means if I were to power the responder from a battery it is not going to work. Therefore I cannot perform any range test in open space outside over a longer range than just the 1.5m I can do on my desk.
I have not modified the firmware to operate 'in battery mode' as I see no documentation that I need to do that.
是因为uart缓冲区已满，所以响应程序中的记录器阻塞吗？
期待有人的消息。
非常感谢。
More on this.
I have undefined CONFIG_RETARGET in the responder and and if power from VBUS it works (though to logs to terminal emulator as expected)
如果我移动跳线J3:pin1-2，那么启动器只会报告“未找到外围设备”
I will be most grateful for a detailed explanation of how to get my WiRa ranging to work so that
(1) Initiator is plugged into my laptop and will log the range data as I can currently see
（2） 应答器由J3:pin1-2供电，并插入手机usb电源组
（3） 最后，它与连接到3.3v电池和J3:pin2-3的应答器一起工作
期待你的回信。
More on this.
With the jumper on J3:pin1-2 and when I plug it into my PC it all works.
如果我拔下插头，然后插入墙上的usb充电器，它不会。
吸烟枪可以重置线从塞格芯片到14695。
Thoughts?
我可以确认，当从usb充电器J3上的引脚2供电时，电压为3.3V，确认VBAT有电，但I VBUS有0V，但VBUS输出（根据UM-B-103中的图5，显然也是5v）。
Hence only difference between plugging into wall charger and a laptop is that the segger chip and USB hub is poweredand由电脑驱动。
更多反馈。
With the device plugged into a PC the segger chip is being driven and RSTn line (Which is RESETn of 16495) is at 1.08V
使用墙壁充电器供电的设备，RSTn为0.42v
我认为复位线有问题，可能需要更大的上拉，以确保RESETn位于芯片的电源导轨附近。
数据表（表9）PAD_RESET, the HIGH level shall be a minimum of 0.7*1.2v= 0.84 and for low the max should be 0.3*1.2=0.36
我测量的是0.42，所以高于0.36，所以它看起来不像是冒烟的枪
经过一次电路黑客我可以让它工作。
I shorted T_RESET which is on the other end of D9 to 3.3v and it fires up and I can see measurements at the initiator end.
所以我用一个3K3的上拉电阻替换了这个短路，这样当segger芯片不是由PC驱动时，T泷u复位是高的，这也可以根据pdf中所附的照片工作。
您好!mtailor公司,
谢谢你的问题和你的发现。所以。如果我理解正确，问题是存在的，如果DA14695 USB套件是通过电池供电。根据用户手册，当跳线放置到J3（引脚2-3）时，可以从外部LiPo电池（连接到J5头）向VBAT引脚提供3.6 V至4.3 V电压。请参阅用户手册中的第5.19节电源选择标题，以检查电池应如何连接以及跳线的配置应如何。另请参阅本节的注1。请说明您是否使用过这种配置？
谢谢，下午好
您好!
谢谢你for coming back to me.
既然你提到了，我没有用电池给电路板供电。
但是，我将一个手机电池组连接到USB接口J1，这样通过LDO（U2）获得3.3v电压，通过J3馈送到VBAT（还确保J2上没有跳线）。我这样做是因为它更容易连接到USB接口的手机电池组。
Hence according to Figure 5 in UM-B-103, I was feeding VLDO into VBAT and that requires the pullup resistor.
我没有给VBAT提供3.6到4.3v的电压，仅仅是因为2节AA（或AAA）电池给了我电3.0v3节AA（或AAA）电池4.5vand both 3.0v and 4.5v are outside the spec you and the user guide UM-B-103 mentions.
Can you please describe what type of battery you have used to get between 3.6 and 4.3v? That is an unusual range.
Actually given I can make it work by feeding 3.3v via VLDO and it works, surely the VBAT spec should not be 3.6 and upwards because 3.3 clearly works.
还请注意,DA1469x da的63页tasheet (CFR0011-120-00) you have VBAT1=VBAT2=3.0v.
我真诚地认为，在UM-B-103和VBAT范围内有一个输入错误，不应该说是3.6v到4.3v，而应该说是1.6v或2.6v到4.3v
谢谢你
Look forward to hearing from you.
您好!mtailor公司,
很抱歉我反应太晚了。老实说，我有点困惑-你能澄清什么是DK的问题吗？
一般来说，您可以使用USB（5伏）、LDO（3.3伏）或外部电池作为电源。您可以使用外部LiPo电池（可选）的3.6 V至4.3 V电压。
Thanks for your indication – I’ll evaluate this. Feedback would be more than welcome,
谢谢，下午好
您好!mtailor公司,
由于您使用的是DA14695-00HQDEVKT-U，因此应进行以下硬件修改：
这两种硬件修改已经在内部应用于所有交付的DA14695无线测距DK。请参阅用户指南中的第4.1节。
谢谢，下午好