2018-07-10 12:24:10 +03:00
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# Control Protocols {#spec_control_api}
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There are two control modes, one is through UVC standard protocol, the other is through UVC custom protocol with extension unit.
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## Standard Protocol
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| Name | Field | Bytes | Default | Min | Max | Stored | Flash Address | Note |
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| :--- | :---- | :---- | :------ | :-- | :-- | :----- | :------------ | :--- |
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| Gain | gain | 2 | 24 | 0 | 48 | √ | 0x12 | valid if manual-exposure |
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| Brightness | brightness/exposure_time | 2 | 120 | 0 | 240 | √ | 0x14 | valid if manual-exposure |
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| Contrast | contrast/black_level_calibration | 2 | 127 | 0 | 255 | √ | 0x10 | valid if manual-exposure |
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## Custom Protocol
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| Name | Field | Bytes | Default | Min | Max | Stored | Flash Address | Channel | Note |
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| :--- | :---- | :---- | :------ | :-- | :-- | :----- | :------------ | :------ | :----- |
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2018-10-22 17:18:22 +03:00
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| Frame rate | frame_rate | 2 | 25 | 10 | 60 | √ | 0x21 | XU_CAM_CTRL | values: {10,15,20,25,30,35,40,45,50,55,60} |
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2018-07-10 12:24:10 +03:00
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| IMU frequency | imu_frequency | 2 | 200 | 100 | 500 | √ | 0x23 | XU_CAM_CTRL | values: {100,200,250,333,500} |
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| Exposure mode | exposure_mode | 1 | 0 | 0 | 1 | √ | 0x0F | XU_CAM_CTRL | 0: enable auto-exposure; 1: manual-exposure |
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| Max gain | max_gain | 2 | 48 | 0 | 48 | √ | 0x1D | XU_CAM_CTRL | valid if auto-exposure |
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| Max exposure time | max_exposure_time | 2 | 240 | 0 | 240 | √ | 0x1B | XU_CAM_CTRL | valid if auto-exposure |
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| Desired brightness | desired_brightness | 2 | 192 | 0 | 255 | √ | 0x19 | XU_CAM_CTRL | valid if auto-exposure |
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| IR control | ir_control | 1 | 0 | 0 | 160 | × | - | XU_CAM_CTRL | |
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| HDR mode | hdr_mode | 1 | 0 | 0 | 1 | √ | 0x1F | XU_CAM_CTRL | 0: 10-bit; 1: 12-bit |
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| Zero drift calibration | zero_drift_calibration | | - | - | - | × | - | XU_HALF_DUPLEX | |
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| Erase chip | erase_chip | | - | - | - | × | - | XU_HALF_DUPLEX | |
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