diff options
Diffstat (limited to 'src/drivers/lsm303d')
| -rw-r--r-- | src/drivers/lsm303d/lsm303d.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/drivers/lsm303d/lsm303d.cpp b/src/drivers/lsm303d/lsm303d.cpp index ba7316e55..af7746d14 100644 --- a/src/drivers/lsm303d/lsm303d.cpp +++ b/src/drivers/lsm303d/lsm303d.cpp @@ -705,6 +705,23 @@ LSM303D::ioctl(struct file *filp, int cmd, unsigned long arg) else return -EINVAL; + case ACCELIOCSSCALE: + { + /* copy scale, but only if off by a few percent */ + struct accel_scale *s = (struct accel_scale *) arg; + float sum = s->x_scale + s->y_scale + s->z_scale; + if (sum > 2.0f && sum < 4.0f) { + memcpy(&_accel_scale, s, sizeof(_accel_scale)); + return OK; + } else { + return -EINVAL; + } + } + + case ACCELIOCGSCALE: + /* copy scale out */ + memcpy((struct accel_scale *) arg, &_accel_scale, sizeof(_accel_scale)); + return OK; default: /* give it to the superclass */ |