MPL3115

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MPL3115

1,217 次查看
周添鹏周
Contributor I

对与MPL3115,想把测量精度提高到1.5Pa,怎么设置?我的配置为初始化,前面为地址,后面为数据,

  I2C_WriteReg(0x26,0x01);

  I2C_WriteReg(0x13,0x07);

  I2C_WriteReg(0x26,0x39);

然后写 I2C_WriteReg(0x26,0x3B);

等待8ms,向地址0X01,0X02,0X03读取数据,在自然状态下,20位数据,后6位会跳动,如果能精确到1.5Pa,最多后4位跳动才对啊

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georgeguo
NXP Employee
NXP Employee

Dear Mr. Zhou,

Please note the pressure reading noise of MPL3115 is 1.5Pa when you set the OSR is 128x.

But the absolute accuracy of MPL3115 is +/-0.4kPa, and relative accuracy is up to +/-0.1kPa.

Please review the datasheet of this sensor.

Thanks,

George Guo

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