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Commit c24e5959 authored by Yu-Han Yang's avatar Yu-Han Yang Committed by Automerger Merge Worker
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Merge "Fix ADR half cycle ambiguity doc (hardware/interfaces)" into sc-dev am: 9f834f1a 

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/14948497

Change-Id: I251db69f4256bdf25da71e0817473bf08adf8eb0
parents 11a16bba 9f834f1a

current.txt

+1 −1
Original line number Diff line number Diff line
@@ -772,7 +772,7 @@ a64467bae843569f0d465c5be7f0c7a5b987985b55a3ef4794dd5afc68538650 android.hardwar 
e042522daa4b5f7fd4a0a19bcdadb93c79a1b04c09ef2c9813a3a8941032f3f5 android.hardware.contexthub@1.0::IContexthub

c2f64133b83ede65c9939ef97ab5bd867b73faf3dba0e7e69f77c3c43d9e487e android.hardware.contexthub@1.0::IContexthubCallback

bda492ec4021d13869de72bd6f8c15c5837b78d6136b8d538efec5320573a5ec android.hardware.gnss@1.0::IGnssMeasurementCallback

6a271e493907e8ba20912e42771bd0d99ae45431a851d5675ef9496d02510a34 android.hardware.gnss@1.1::IGnssMeasurementCallback

7ae2025662e30e690a3ffa1c65cc972c6297a68638174055c33cbf3d2e4bbddc android.hardware.gnss@1.1::IGnssMeasurementCallback

11e9e1a1fd0c9b3d9648750d4b10dc2a839d3a6688904c3fc49500a4e7ca75b0 android.hardware.gnss@2.1::IGnssMeasurementCallback

2c331a9605f3a08d9c1e0a36169ca57758bc43c11a78ef3f3730509885e52c15 android.hardware.graphics.composer@2.4::IComposerClient

3da3ce039247872d95c6bd48621dbfdfa1c2d2a91a90f257862f87ee2bc46300 android.hardware.health@2.1::types

gnss/1.1/IGnssMeasurementCallback.hal

+26 −1
Original line number Diff line number Diff line
@@ -24,13 +24,38 @@ interface IGnssMeasurementCallback extends @1.0::IGnssMeasurementCallback { 
     * Flags indicating the Accumulated Delta Range's states.

     *

     * See the table below for a detailed interpretation of each state. This is

     * a continuation of the table from 1.1/IGnssMeasurementCallback.hal.

     * a continuation of the table from 1.0/IGnssMeasurementCallback.hal.

     *

     * +---------------------+-------------------+-----------------------------+

     * | ADR_STATE           | Time of relevance | Interpretation              |

     * +---------------------+-------------------+-----------------------------+

     * | HALF_CYCLE_RESOLVED | ADR(t)            | Half cycle ambiguity is     |

     * |                     |                   | resolved at time t.         |

     * |                     |                   |                             |

     * |                     |                   | For signals that have       |

     * |                     |                   | databits, the carrier phase |

     * |                     |                   | tracking loops typically    |

     * |                     |                   | use a costas loop           |

     * |                     |                   | discriminator. This type of |

     * |                     |                   | tracking loop introduces a  |

     * |                     |                   | half-cycle ambiguity that   |

     * |                     |                   | is resolved by searching    |

     * |                     |                   | through the received data   |

     * |                     |                   | for known patterns of       |

     * |                     |                   | databits (e.g. GPS uses the |

     * |                     |                   | TLM word) which then        |

     * |                     |                   | determines the polarity of  |

     * |                     |                   | the incoming data and       |

     * |                     |                   | resolves the half-cycle     |

     * |                     |                   | ambiguity.                  |

     * |                     |                   |                             |

     * |                     |                   | Before the half-cycle       |

     * |                     |                   | ambiguity has been resolved |

     * |                     |                   | it is possible that the     |

     * |                     |                   | ADR_STATE_VALID flag is     |

     * |                     |                   | set, but the ADR_STATE_     |

     * |                     |                   | HALF_CYCLE_RESOLVED flag is |

     * |                     |                   | not set.                    |

     * +---------------------+-------------------+-----------------------------+

     */

    enum GnssAccumulatedDeltaRangeState

gnss/aidl/android/hardware/gnss/GnssMeasurement.aidl

+25 −0
Original line number Diff line number Diff line
@@ -438,6 +438,31 @@ parcelable GnssMeasurement { 
     * +---------------------+-------------------+-----------------------------+

     * | HALF_CYCLE_RESOLVED | ADR(t)            | Half cycle ambiguity is     |

     * |                     |                   | resolved at time t.         |

     * |                     |                   |                             |

     * |                     |                   | For signals that have       |

     * |                     |                   | databits, the carrier phase |

     * |                     |                   | tracking loops typically    |

     * |                     |                   | use a costas loop           |

     * |                     |                   | discriminator. This type of |

     * |                     |                   | tracking loop introduces a  |

     * |                     |                   | half-cycle ambiguity that   |

     * |                     |                   | is resolved by searching    |

     * |                     |                   | through the received data   |

     * |                     |                   | for known patterns of       |

     * |                     |                   | databits (e.g. GPS uses the |

     * |                     |                   | TLM word) which then        |

     * |                     |                   | determines the polarity of  |

     * |                     |                   | the incoming data and       |

     * |                     |                   | resolves the half-cycle     |

     * |                     |                   | ambiguity.                  |

     * |                     |                   |                             |

     * |                     |                   | Before the half-cycle       |

     * |                     |                   | ambiguity has been resolved |

     * |                     |                   | it is possible that the     |

     * |                     |                   | ADR_STATE_VALID flag is     |

     * |                     |                   | set, but the ADR_STATE_     |

     * |                     |                   | HALF_CYCLE_RESOLVED flag is |

     * |                     |                   | not set.                    |

     * +---------------------+-------------------+-----------------------------+

     */

    const int ADR_STATE_UNKNOWN = 0;