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RN4871U Flash update 版本異常
#1
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我在幫RN4871U更新時發生了一點狀況,我使用全新的兩顆RN4871U更新Flash,更新完畢後其中有一顆的版本號是正常顯示RN4871的,但是另一顆藍芽卻顯示RN4870的版本號,那我在之後使用兩顆藍芽對連的功能上一直無法成功連線上,不知道是否是這問題影響到了,希望有先進能幫助我解決問題。
※問題可以參考圖片

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jpg  版本問題.JPG (324.85 KB)
114357_611360f73e23c.jpg 1530X996 px

發表於: 2021/8/11 13:33
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Re: RN4871U Flash update 版本異常
#2
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我請 AE 看一下這問題,請稍待一下。

發表於: 2021/8/13 11:57
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Re: RN4871U Flash update 版本異常
#3
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RN4871 and RN4870 shares the same firmware. The firmware should be able to read the ID in in IC to differentiate RN4870 and RN4871,

Maybe the information block in your IC is damaged. Could you help share your PCB design and Schematics? I would like to check the power supply circuit of RN4871U. If the power circuit is not handled properly, information block could be damaged.

Thanks.

Martin

發表於: 2021/8/16 11:44
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Re: RN4871U Flash update 版本異常
#4
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This is my PCB Schematics.
I found the same problem in google. --> https://www.microchip.com/forums/m954916.aspx
Unstable voltage seems to cause damage to the Bluetooth.

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jpg  硬體.JPG (138.46 KB)
114357_6119fee9109de.jpg 1378X618 px

發表於: 2021/8/16 14:13
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