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ADS1118 读CONFIG寄存器正确,但是写CONFIG寄存器失败

Other Parts Discussed in Thread: ADS1118

用AVR的硬件SPI接ADS1118 调试,买了ADS1118十多片,其中有一片能完全正常工作,能正确配置寄存器 和读出AD值,但是其他片子同样的程序却运行不起来。

用示波器看信号完全一样,而且用32位模式读取DATA寄存器全是0 ,但是CONFIG的数据是0x058B(默认值)可以正确读出,但是没法写入(updata) CONFIG寄存器数据。这个问题很奇怪 有没有人遇到过?