LSM303AGR如何在加速度计上获得12位分辨率

您只看到10位值的原因是使用FIFO。 FIFO缓冲区能够为每个通道存储多达32个10位加速度样本。请查看应用说明中的第4.8章
http://www.st.com/resource/en/application_note/dm00265383.pdf
要获得12位分辨率输出，必须禁用FIFO。



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The reason why you see only 10-bits value is usage of FIFO. The FIFO buffer is able to store up to 32 acceleration samples of 10 bits for each channel. Please check chapter 4.8 in application note
http://www.st.com/resource/en/application_note/dm00265383.pdf
.To get 12-bit resolution output you have to disable the FIFO.

谢谢！我昨天有这个想法，但我没试过。我可能不会使用LSM303AGR，只有一段时间，直到我的应用程序有一个更好的电子罗盘。磁力计的分辨率也没有让我印象深刻。
我喜欢LSM303DLHC（但没有SPI），这是我迄今为止尝试过的最好的ST电子罗盘（已经有一段时间的NRND）。我也尝试了LSM303C，并将对它进行更多测试，看看我是否已经做好了一切。我在LSM303C上的第一次温度测试是疯狂的，当从大约0℃到室温进行测试时，在航向上有大约10度的漂移。我在这里读到LSM303C基于LIS3MDL，它也有一个疯狂的温度漂移。
我正在考虑试用LSM303D。这个状态仍然活跃，我希望它和DLHC一样好。看起来有些仓库表明它不再可用了。



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Thank you! I had that idea yesterday but I did not try it out. I am probably not going to use the LSM303AGR, only for a while until I have a better e-compass for my application. The resolution from the magnetometer does not impress me either.
I liked the LSM303DLHC (but no SPI) which is the best ST e-compass I have tried so far (which has had a NRND for a while). I have also tried out LSM303C and are going to test it some more to see if I have done everything correct. My first temperature test on the LSM303C was insane, had about 10 degree drift on the heading when running a test from approx 0 deg.C to room temp. I read somewhere in here that LSM303C is based on LIS3MDL which also has a insane temperature drift.
I am thinking about trying out the LSM303D. The status is still active on this one, I hope it is as good as the DLHC. It looks like some of the warehouses indicates that it is not available anymore.