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BQ76940 sda一直高电平 iic无法正常通讯

Other Parts Discussed in Thread: MSP430G2553, BQ76930, TIDA-00449

程序用的00449 调试bq76930和msp430g2553没问题,电路采用datssheet推荐电路,示波器观察sda一直都是3.3V,软件调试,i2c错误,就是没有写入,不知道从930改为940需要修改哪些地方,还请官方和各位帮忙分析下