DA14695-00HQDEVKT-U kit and operating from 3.3V LDO (U2), J3 (pin1-2) does not seem to work

⚠️
Hi there.. thanks for coming to the forums. Exciting news! we’re now in the process of moving to our new forum platform that will offer better functionality and is contained within the main Dialog website. All posts and accounts have been migrated. We’re now accepting traffic on the new forum only - please POST any new threads at//www.wsdof.com/support. We’ll be fixing bugs / optimising the searching and tagging over the coming days.
11 posts / 0 new
Last post
mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
DA14695-00HQDEVKT-U kit and operating from 3.3V LDO (U2), J3 (pin1-2) does not seem to work

Hi

我有两个da14695-00hqdevkt-u套件,并从WIRA SDK加载了WIRA测距示例应用程序。
I do not have mikrobus displays but that is ok as I have defined that out from the builds.

我有两个连接到终端仿真器的设备,我可以看到上电时的输出。

当我有默认电源设置时: - 5V从VBUS J2:PIN2-3我可以看到发起者连接到响应者,我看到所示的距离。

精彩的。

That is all tethered to my PC.

所以我认为现在让我通过J3:PIN1-2为响应者提供电,以便在RH 14695的VBAT引脚上电源,并且在VBU上显然0V,因为J2上没有跳线。

我期待看到发起者连接到响应者并告诉我一些范围读数 -did not work.
(I stress, the initiator just shows 'peripheral device not found')

这意味着如果我要从电池供电,它不会工作。因此,我无法在较长范围内的开放空间中执行任何范围测试,而不是我可以在我的桌子上做的1.5米。

我尚未修改固件以在电池模式下运行,因为我没有看到我需要做的文档。

Is it the case that the logger in the responder is blocking because the uart buffer is full?

Look forward to hearing from someone.

Thank you.

设备:
mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
更多关于这个。

更多关于这个。
我在响应者中有未定义的config_retarget,如果从VBUS工作的电源(尽管要按预期登录终端仿真器)

If I then move the jumper J3:pin1-2 then the initiator just reports 'peripheral device not found'

我将非常感谢关于如何让我的Wia的详细说明来工作
(1)启动器已插入我的笔记本电脑,并将在当前看到的范围数据记录
(2) Responder is powered from either J3:pin1-2 and plugged into a phone usb power bank
(3) Then finally, it working with responder connected to a 3.3v battery and J3:pin2-3

Look forward to heraing from you.

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
更多关于这个。

更多关于这个。
使用J3上的跳线:PIN1-2,当我将其插入我的PC时,它都有工作。
If I unplug and then plug into a wall usb charger, it does not.

Smoking gun could be reset line from segger chip to the 14695.

想法?

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
And I can confirm that when

And I can confirm that when powered from usb charger pin 2 on J3 is 3.3V confirming that VBAT has power but I VBUS has 0V however VBUS_OUT (As per figur 5 in UM-B-103 is obviously 5v too).

因此,插入墙壁充电器和笔记本电脑之间只有区别在于Segger芯片和USB集线器是供电的推动了电脑。

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
More feedback.

More feedback.

通过插入PC的设备,塞格尔芯片正在驱动,RSTN线(16495的重置)为1.08V

With the device powered from wall charger the RSTn is at 0.42v

I think there is a problem with the reset line and perhaps needs a stronger pullup to ensure that RESETn is sitting near the power supply rail for the chip.

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
The datasheet (Table 9) PAD

数据表(表9)PAD_RESET,高电平应为0.7 * 1.2V = 0.84,对于低最大值应为0.3 * 1.2 = 0.36

I am measuring 0.42 so that is higher than 0.36 so it RESETn does not look like the smoking gun

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
After a circuit hack I can

After a circuit hack I can get it to work.
我短路,在D9到3.3V的另一端上,它会发出,我可以在发起者端看到测量。

So I replaced that short with a 3K3 pullup resistor so that T_RESET is high when the segger chip is not being driven by the PC and that works too as per the attached photo in the pdf.

PM_Dialog
Offline
Last seen:14 hours 30 min ago
工作人员
加入:2018-02-08 11:03
嗨mtailor,

嗨mtailor,

Thanks for your questions and for your findings. So. If I understood correctly, the problem exists if the DA14695 USB Kit is power through a battery. According to the user manual, you can supply 3.6 V to 4.3 V to VBAT pin, from external LiPo battery (connected to J5 header), when jumper placed to J3 (pin 2-3). Please see section 5.19 Power Selection Headers in the user manual in order to check how the battery should be connected and how the jumper’s configuration should be. Please also check Note 1 in the current section. Could you please indicate if you have used this configuration?

Thanks, PM_Dialog

mtailor
Offline
Last seen:10 months 3 weeks ago
加入:2014-02-19 10:07
Hi

Hi

谢谢你回到我身边。

Now that you mention it, I did not use a battery to power the board.

However, I connected a phone battery pack to the USB connector J1 so that through the LDO (U2) I get 3.3v which is fed to VBAT via J3 (and also ensured there was no jumper on J2). I did that as it was easier to connect a phone battery pack to the USB connector.

因此,根据UM-B-103的图5,我将VLDO送入VBAT并且需要上拉电阻。

I have not fed 3.6 to 4.3v to VBAT simply because 2 AA( or AAA) batteries gives me3.0V.和3 AA (or AAA) batteries give me4.5V.3.0V和4.5V都在您和用户指南UM-B-103提到的规范外。

您能否描述您用于达到3.6和4.3V之间的电池类型?这是一个不寻常的范围。
实际上给出了我可以通过VLDO喂养3.3V来使其工作,肯定是VBAT规范不应该是3.6和向上,因为3.3显然有效。

另请注意,DA1469X数据表(CFR0011-120-00)的第63页,您有VBAT1 = VBAT2 = 3.0V。
I genuinely thing that there is a typo in UM-B-103 and VBAT range should not be stated as 3.6v to 4.3v, but say either 1.6v or 2.6v to 4.3v

Thank you

期待您的来信。

PM_Dialog
Offline
Last seen:14 hours 30 min ago
工作人员
加入:2018-02-08 11:03
嗨mtailor,

嗨mtailor,

My apologies for my late response. To be honest, I am little bit confused - could you please clarify what is the issue with the DK?

In general you can use USB (5 V), LDO (3.3 V), or external battery as a power source. You can use 3.6 V to 4.3 V from external LiPo battery (optional).

感谢您的指示 - 我会评估这一点。反馈将超过欢迎,

Thanks, PM_Dialog

PM_Dialog
Offline
Last seen:14 hours 30 min ago
工作人员
加入:2018-02-08 11:03
嗨mtailor,

嗨mtailor,

Since you are using the DA14695-00HQDEVKT-U, you should do the following HW modifications :

  1. If the DA14695 USB DK is to be connected to a power adapter or power bank, please remove D9, the tiny diode near K2.
  2. In case of DA14695 PRO mother board and USB DK board, sockets should be addedto J15 and J16 for OLED C Click Display to be clicked on.

HW修改都已应用于所有交付的DA14695无线测距DKS。请参阅“用户指南”中的第4.1节。

Thanks, PM_Dialog