I have been working on this for quite some time and I am unable to get my custom board working. When I attach my board through the development board I get the message "No devices have been detected."
My custom board is .4mm thick if it matters.
C1 - C4 CL05A105MQ5NNNC
Crystal - 7M-16.000MEEQ-T
Inductor - CV201210-2R2K
I think the most likely area of problem would be around C3 and C4 with the meander line. This is a pretty simple design and I'm not sure where else to check.
I have tried both the newest version of JTAG and the one recommended by SmartSnippets Studio.
Thank you,
约翰
Attachment:
Device:
Hi johncharris,
关于原理图，VDCDC和VDCDC_RF必须与MIN 7mm长的曲折线连接，但它似乎连接在PCB上。您能否确保vdcdc和vdcdc_rf连接？此外，我强烈建议您遵循我们的PCB设计推荐。RF性能可能很低，您应该提高XTAL的接地。顺便说一下，我强烈建议您检查电源电压并确保他16MHz振荡器正在运行。此外，您提到使用我们的DK连接了您的定制板，所以请确保您的连接符合“How to program a custom board using a development kit (basic or pro)?” from the FAQs page?
https://support.dialog-seminile.com/guide/faq-dev-kits-ref-designs.
Thanks, PM_Dialog
How should the meander line be connected? I haven't been clear on this. Should this be a separate wire instead of a trace on the board?
VDCDC and VDCDC RF are connected between the pads of C3 and C4. I didn't know the right way to handle this.
Where are the design recommendations for the board?
Thank you,
约翰
Hi johncharris,
请在文件中找到设计建议：https://support.dialog-semiconductor.com/system/files/resources/AN-B-054...
我试图融合design recommendations found at the link sent as well as the document AN-B-061. I made several improvements, particularly with the grounding and moving C4 to the other side of the meander line. I'm still not able to get this to do anything. I plug it in and SmartSnippets says there is no device attached.
I added some photos of this connected into the dev board in the attached zip file.
Thank you,
约翰Harris
Hi johncharris,
Could you please check all the power rails of your custom board? Be aware that should be according to the specifications of the DA14580 datasheet. Also, are you able to download firmware into the System RAM? Your custom board doesn’t have a USB port, does it?
Thanks, PM_Dialog
I tested and there is power getting to the board.
现在我只是想这么做。虽然这个板有USB的标题，但我没有任何组件附在那里。董事会唯一的部分是：
* DA14580
* 2.2uH Inductor
* 4 - 1uF Capacitors
* 16mhz crystal
I do not have a 32 khz crystal or anything else attached. I'm just working on getting the most basic circuit working. The only external connections are the 4 connections to the dev board for power, ground, TMS and TCK.
I am unable to program the board. Smart Snippiets just says that no devices have been detected.
[INFO General @19-01-10 10:07:57] Could not measure total IR len. TDO is constant high.
[ERROR General @19-01-10 10:07:57] Could not read memory address 0x50003200 with function JLINKARM_ReadMemHW
[ERROR General @19-01-10 10:07:57] No known chip found while opening JLink connection. Terminating proccess...
Thank you,
约翰
Hi johncharris,
If I am able to understand correct, you are trying to program your custom board through JTAG using the Basic DK and Smart Snippet. Could you please make sure that your connections between your board and the Basic DK are according to the connections of the “How to program a custom board using a development kit (basic or pro)?” from the FAQs page? Did you check this link?
https://support.dialog-seminile.com/guide/faq-dev-kits-ref-designs.
Also, could you please let know if you tried to connect the Smart Snippet through UART?
Thanks, PM_Dialog
I have wired it up according to that FAQ with the exception of TP 2, since I'm just trying to run something from RAM from now.
I have not tried UART, I don't have the pins on the chip connected for that.
Hi johncharris,
这是来自JLINK软件而不是来自智能片段的指示（当通过JTAG连接时，智能代码段使用JLink以访问设备）。我强烈建议您检查您是否已正确配置SmartSnippet Toolbox的“电路板设置”选项卡中的SPI闪存引脚。可能在自定义PCB上的处理器和试图与设备通信的JLINK FW之间没有连接。这可能是从与PCB的问题联系起来，这使得580无法操作的PCB。我的建议是检查引导加载程序是否正在执行，以便验证580是否正常运行。您可以探测P04和P05引脚，并且应切换引导程序的一部分的引脚，因此在连接到终端时，您应该看到设备打印垃圾。此外，我建议您使用jlink本身连接电路板，而是使用智能片段，而且我也会尝试通过keil下载代码。
Thanks, PM_Dialog