大家好。我的名字叫凯文。
I'm facing the problem like in my attachment. i have a chip which is attach to my custom board, and i want to burn my program in it. but before that, i need to flash a bootloader right?
我使用UART连接芯片,引脚配置为VCC,GND,P0.4和P.05。但是,重置引脚没有检测到智能片段。我要做什么?谢谢你
设备:
嗨Kevleo94,
每当芯片向上或重置时,ROM Booter被激活(只要您在OTP中没有图像),以便扫描其外部设备的外设(SPI / I2C / UART),因此,不,没有需要刷新任何东西,以便将代码下载到580的RAM中。智能代码段的说法是什么,它没有看到580执行的靴子,以便智能片段意识到有580次扫描有580UART和搜索0x02,它向引导加载程序的UART过程启动,以便智能片段确保应该有0x02,从用户开始重置电路板以使引导程序运行和捕获。0x02字节。所以显然,您的问题是您的UART连接,或者您不会重置电路板,以便引导加载程序不运行,因此智能代码段没有看到0x02字节。
Thanks MT_dialog
嗨mt_dialog,
我想知道我所做的UART连接有什么问题?我将引脚连接到与开发板相同的端口的jlink。而且当我在重置按钮处检查电压时,它显示正确的逻辑。0V未按按钮,按下按钮时3.3V。请指导我解决这个问题。
谢谢你。
嗨Kevleo94,
无论如何,我没有得到哪个PIN码,jLink与UART有什么关系,如果您使用PC连接UART引脚,您可以看到主引导程序执行(您应该看到垃圾打印如果您在TX引脚上放置逻辑分析仪,则应看到一个0x02)?
Thanks MT_dialog
嗨mt_dialog,
我只是做你要求我做的事情。我使用FTDI将我的DA14580连接到我的PC。我看到我的终端里有一些垃圾。但我没有看到“0x02”的东西,垃圾看起来一直是我按下重置按钮后,但它超过1600米级数。我应该使用哪种讨厌?它是9600或57600吗?我使用p0.4和p0.5作为UART引脚。
谢谢你。
嗨Kevleo,
Garbage is what you should see on the terminal, you wont be able to see the 0x02 on the terminal but only via using a Logic analyser, so you know that the bootloader is running as soon as you press the reset button (i dont get the "more than 16000ms", this is the time the tool will provide in order for you to press the reset button before it times out and feedback you with the failed to detect the message). Regarding the baud rate the 580 transmits on specific pins at specific baud rate that are documented in the AN-B-001-Booting from Serial interfaces.pdf. So what i still think is the problem is your connections and Smart Snippets never gets that 0x02, perhaps you should try switching the RX/TX on the FTDI pins of the dev kit in case you ve got those wrong.
Thanks MT_dialog
嗨mt_dialog,
我刚刚做了你最后一次问的东西,但它仍然没有工作。当我通电IC时,我看到一些数据随机发送到我的终端。它不经常发生。按下重置按钮时,有时IC会发出一些数据,有时不会。
我有一些假设:
1. Is it possible when the ic is broken because of ESD or the temperature is too hot when i'm soldering?
2. how much maximum temperature can be retained by ic when soldered ?
3.我怎么知道ic仍然工作得很好吗?which ports should I check with avometer (other than reset) to know the reset port works fine
4.在SmartTag示意图中,有值0h的电感,是如此重要?当我用电阻0欧姆改变时是否可以?
谢谢你kevleo94.
嗨Kevleo94,
Thanks MT_dialog