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device: added a _device_id to all drivers

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this device ID identifies a specific device via the tuple of (bus, bus
type, address, devtype). This allows device specific configuration
data to be stored along with a device ID, so the code can know when
the user has changed device configuration (such as removing an
external compass), and either invalidate the device configuration or
force the user to re-calibrate
This commit is contained in:
Andrew Tridgell
2014-07-12 16:25:43 +02:00
committed by Lorenz Meier
parent a2f528c5ba
commit 93d444d1aa
5 changed files with 57 additions and 1 deletions
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src/drivers/drv_device.h
+7
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@@ -59,4 +59,11 @@
/** check publication block status */
#define DEVIOCGPUBBLOCK _DEVICEIOC(1)
/**
* Return device ID, to enable matching of configuration parameters
* (such as compass offsets) to specific sensors
*/
#define DEVIOCGDEVICEID _DEVICEIOC(2)
#endif /* _DRV_DEVICE_H */