LSM303AGR自检总是失败

您好，我正在通过I2C使用LSM303AGR，经过一番挣扎之后，每一件事看起来都很好。我可以使用看起来正确的值来读取6个轴中的任何一个，并且当我对我的电路板进行测量时，读取值会正确反应。
那么，为什么我在执行数据表中给出的自检程序时总会出现故障？我注意到这种故障取决于PCB的倾斜：我有时会使用磁力计失败，有时我会使用加速度计失败：读取值不符合预期范围......
任何想法，任何人？
谢谢！

#fail #self-test＃lsm303agr

以上来自于谷歌翻译

以下为原文

Hello, I'm using an LSM303AGR thru I2C, and after a little struggling, everythings looks fine. I can read any of the 6 axes with what seems to be the right values, and the read values react correctly when I tild my board.
So, why am I always getting a failure when executing the self-test procedure given in the datasheet ? I notice that the kind of failure depends on the tilt of the PCB: I sometimes gets a fail with the magnetometer, and other times I gets a fail with the accelerometer: the read values doesn't comply with the expected range...
Any idea, anyone ?
Thanks!

#fail #self-test #lsm303agr

盛越熊

2019-3-19 06:13:12

你好Christophe，
得到了同样的问题并解决了它。
规范中提到的MIN-MAX不是读数中的MIN（MAX）（这是误导性的），而是来自表[表3.传感器特性]。
它应该适用于此。

以上来自于谷歌翻译

以下为原文

Hi Christophe,
Got the same issue and solved it.
The MIN - MAX referred in the specs are not the ones from the readings (this is misleading) but rather from the table [Table 3. Sensor characteristics].
It should ok applying this.