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bq78350和bq76930做了一个6S锂电池的BMS,但是上电之后LED不亮

Other Parts Discussed in Thread: BQ78350, BQ76930

新手小白使用bq78350和bq76930做了一个6S锂电池(24.8V左右)的BMS,但是上电之后LED不亮,测量发现芯片LED1~5引脚均为1.5V,LED灯正极电压为3V,不够导通电压,尝试用GPIO使芯片LED引脚变为低电平也失败,第一次发帖,求技术大神帮忙!

目前上位机是一个仅支持通讯读写测试的USB转SMBUS的软件