[SEN-235] Fix IMURAW docstring

c/include/libsbp/imu.h

@@ -37,10 +37,9 @@ SBP_PACK_START
  */
 #define SBP_MSG_IMU_RAW 0x0900
 typedef struct SBP_ATTR_PACKED {
-  u32 tow;      /**< Milliseconds since start of GPS week. If the high bit is set, the
-time is unknown or invalid.
- [ms] */
-  u8 tow_f;    /**< Milliseconds since start of GPS week, fractional part
+  u32 tow;      /**< Milliseconds since reference epoch and time status.
+ */
+  u8 tow_f;    /**< Milliseconds since reference epoch, fractional part
  [ms / 256] */
   s16 acc_x;    /**< Acceleration in the IMU frame X axis */
   s16 acc_y;    /**< Acceleration in the IMU frame Y axis */

haskell/src/SwiftNav/SBP/Imu.hs

@@ -47,10 +47,9 @@ msgImuRaw = 0x0900
 -- message.
 data MsgImuRaw = MsgImuRaw
   { _msgImuRaw_tow :: !Word32
-    -- ^ Milliseconds since start of GPS week. If the high bit is set, the time
-    -- is unknown or invalid.
+    -- ^ Milliseconds since reference epoch and time status.
   , _msgImuRaw_tow_f :: !Word8
-    -- ^ Milliseconds since start of GPS week, fractional part
+    -- ^ Milliseconds since reference epoch, fractional part
   , _msgImuRaw_acc_x :: !Int16
     -- ^ Acceleration in the IMU frame X axis
   , _msgImuRaw_acc_y :: !Int16

java/src/com/swiftnav/sbp/imu/MsgImuRaw.java

@@ -37,12 +37,11 @@ public class MsgImuRaw extends SBPMessage {
     public static final int TYPE = 0x0900;
 
 
-    /** Milliseconds since start of GPS week. If the high bit is set, the
-time is unknown or invalid.
+    /** Milliseconds since reference epoch and time status.
  */
     public long tow;
 
-    /** Milliseconds since start of GPS week, fractional part
+    /** Milliseconds since reference epoch, fractional part
  */
     public int tow_f;
 

javascript/sbp/imu.js

@@ -32,9 +32,8 @@ var UInt64 = require('cuint').UINT64;
  * device hardware and settings, are communicated via the MSG_IMU_AUX message.
  *
  * Fields in the SBP payload (`sbp.payload`):
- * @field tow number (unsigned 32-bit int, 4 bytes) Milliseconds since start of GPS week. If the high bit is set, the time is
- *   unknown or invalid.
- * @field tow_f number (unsigned 8-bit int, 1 byte) Milliseconds since start of GPS week, fractional part
+ * @field tow number (unsigned 32-bit int, 4 bytes) Milliseconds since reference epoch and time status.
+ * @field tow_f number (unsigned 8-bit int, 1 byte) Milliseconds since reference epoch, fractional part
  * @field acc_x number (signed 16-bit int, 2 bytes) Acceleration in the IMU frame X axis
  * @field acc_y number (signed 16-bit int, 2 bytes) Acceleration in the IMU frame Y axis
  * @field acc_z number (signed 16-bit int, 2 bytes) Acceleration in the IMU frame Z axis