BM1397_enable_extended_mode_of_temperature_sensor

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    Hello.
    First of all, burn down the pic to see if it works; if not, check whether the 1.8V of the 7pc9, 22, and 24 is OK and whether it is soldered well, because the temperature is transmitted back through these chips. If the chip is soldered well, the chip has no problem, it is the temperature problem, and the chip has a problem, resulting in the temperature can not be transmitted back, so give priority to check the chip, rather than the sense of temperature.

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