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Gunar Schorcht 2018-01-04 17:35:24 +01:00
parent e62924e2a1
commit 1e5608ee76
5 changed files with 55 additions and 82 deletions
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extras/lsm303d/README.md
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@ -127,24 +127,24 @@ Raw **output data** (**raw data**) are given as 16-bit signed integer values in
Accelerometer full scale | Resolution | Driver symbol
---------------------:|-----------:|:-----------
±2 g | 0.061 mg | ```lsm303d_a_scale_2```
±4 g | 0.122 mg | ```lsm303d_a_scale_4```
±6 g | 0.183 mg | ```lsm303d_a_scale_6```
±8 g | 0.244 mg | ```lsm303d_a_scale_8```
±16 g | 0.732 mg | ```lsm303d_a_scale_16```
±2 g | 0.061 mg | ```lsm303d_a_scale_2_g```
±4 g | 0.122 mg | ```lsm303d_a_scale_4_g```
±6 g | 0.183 mg | ```lsm303d_a_scale_6_g```
±8 g | 0.244 mg | ```lsm303d_a_scale_8_g```
±16 g | 0.732 mg | ```lsm303d_a_scale_16_g```
Magnetormeter full scale | Resolution | Driver symbol
---------------------:|:-----------|:------
±2 Gauss | 0.080 mGauss | ```lsm303d_m_scale_2```
±4 Gauss | 0.160 mGauss | ```lsm303d_m_scale_4```
±8 Gauss | 0.320 mGauss | ```lsm303d_m_scale_8```
±12 Gauss | 0.479 mGauss | ```lsm303d_m_scale_12```
±2 Gauss | 0.080 mGauss | ```lsm303d_m_scale_2_Gs```
±4 Gauss | 0.160 mGauss | ```lsm303d_m_scale_4_Gs```
±8 Gauss | 0.320 mGauss | ```lsm303d_m_scale_8_Gs```
±12 Gauss | 0.479 mGauss | ```lsm303d_m_scale_12_Gs```
By default, a full scale of ±2 g is used for the acceleration and ±2 Gauss for the magnetic measurement. ```lsm303d_set_a_scale``` and ```lsm303d_set_m_scale``` functions can be used to change these values.
```
lsm303d_set_a_scale(sensor, lsm303d_a_scale_4);
lsm303d_set_m_scale(sensor, lsm303d_m_scale_8);
lsm303d_set_a_scale(sensor, lsm303d_a_scale_4_g);
lsm303d_set_m_scale(sensor, lsm303d_m_scale_8_Gs);
```
### Fetching output data
@ -1190,8 +1190,8 @@ void user_init(void)
#endif
// LAST STEP: Finally set scale and mode to start measurements
lsm303d_set_a_scale(sensor, lsm303d_a_scale_2);
lsm303d_set_m_scale(sensor, lsm303d_m_scale_4);
lsm303d_set_a_scale(sensor, lsm303d_a_scale_2_g);
lsm303d_set_m_scale(sensor, lsm303d_m_scale_4_Gs);
lsm303d_set_a_mode (sensor, lsm303d_a_odr_12_5, lsm303d_a_aaf_bw_773, true, true, true);
lsm303d_set_m_mode (sensor, lsm303d_m_odr_12_5, lsm303d_m_low_res, lsm303d_m_continuous);