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Original question:

BQ40Z50-R1: Sealed模式下哪些可以读取？

BQ40Z50-R2: BQ40Z50-R2 can't read when gauge is seal.

Nikki Yang
Prodigy 10 points
Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQ40Z50, EV2400

Hi Experts,

我們使用BQ40Z50, 透過我們的設備系統, ,想要讀取上鎖的battery pack 時, 結果無法讀取；但是將gauge 解鎖後, 結果可以讀取,

請幫忙確認可能問題為何? 謝謝.

Nikki

  • 0
    TI__Guru*** 130456 points

    您好，ManufacturerAccess() commands are available in sealed mode，用EV2400只读取电压，然后用示波器把i2c的波形抓取下来。再抓一下自己软件编写的的i2c波形，同样读取这个电压，看看两者有什么区别，很快就能定位到问题。比如ACK信号有没有？发送地址对不对？发送命令时序对不对等。