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DLP3010: 曝光配置问题

Part Number: DLP3010
Other Parts Discussed in Thread: DLPC3478, DLPA2005

通过i2c配置dlp曝光在27张条纹序列。当dlp的曝光时间超过20000曝光值时,配置返回正确但是dlp没有投光。

ps:应该不是暗时间配置的问题,配置之前会通过命令读取按时间。

  • 仔细核对软件配置

    Overview


    These are the release notes for the following firmware image file:

    • Firmware Version: 8.0.1
      • Embedded Software Version: 8.1.0
      • Generated from DLP Composer Version: 13.13
    • DMD: DLP3010LC
    • Controller: DLPC3478
    • PMIC: DLPA2005

    Configuration Settings

    • I2C Address: 0x36
    • DMD Pin Mapping: 1
    • Rlim value: 39mΩ
    • Light Control Sequence Database Version: 0.5.71

    Supported Features


      • Light Control
        • Internal Pattern Streaming Mode: - Trigger-In/Free-running modes (Mono 1 Bit/8 Bit, RGB 1 Bit/8 Bit, Vertical + Horizontal Pattern Generation, Pattern Invert)
        • External Pattern Streaming Mode (Mono 1 Bit/8Bit, RGB 1 Bit/8Bit)
        • Zero dark time external pattern display for illumination time less than 400 uSec
        • Splash Patterns (Mono 1 Bit/ 8 Bit)

      • Display
        • External video input
        • IntelliBrightTm video processing algorithms
        • Splash Screens
        • Source frame rates supported - 0 to 123 HZ
        • Four 2D looks (cool, medium, warm, and other) and one 3D look

      • Supported pattern timings in Sequence Database v0.5.71:

        • Internal Pattern Mode Timings:

          Pattern Type
          Sequence Index
          Exposure Time Range (us)
          Sequence Min Pre-Exposure Dark Time (us)
          Sequence Min Post-Exposure Dark Time (us)
          1-bit Monochrome
          18
          200 - 399
          171
          31
          17
          400 - 799
          171
          31
          16
          800 - 799
          171
          31
          15
          1800 - 3799
          171
          31
          14
          3800 - 7600
          171
          31
          1-bit RGB
          25
          600 - 1799
          171
          31
          24
          1800 - 3799
          171
          31
          23
          3800 - 7600
          171
          31
          8-bit Monochrome
          20
          3464 - 6928
          171
          31
          21*
          1677 - 3463
          171
          31
          8-bit RGB
          22
          10912 - 21824
          171
          31

          *Sequence 21 is a special sequence that displays 7-bit patterns. The least significant bit of the 8-bit pattern data will be ignored.

          Notes:

          • For internal patterns, there will be an additional variable delay of ~3000 us at the beginning of every pattern set.
          • Exposure times shorter than the above values are not possible. Longer exposure times will operate with decreased timing accuracy and behavior is not guaranteed.
          • Shorter dark times are not possible. Longer dark times can be used. The maximum possible dark times for a desired exposure time are:
            • Tmax pre-exposure dark time  = ( 27306us + tsequence min pre-exposure dark time ) * (Tdesired exposure / tsequence minimum exposure)
            • Tmax post-exposure dark time = ( 27306us + tsequence min post-exposure dark time ) * (Tdesired exposure / tsequence minimum exposure)
        • External Pattern Streaming Timings:

          Pattern Type
          Sequence Index
          Exposure Time Range (us)
          Sequence Min Pre-Exposure Dark Time (us)
          Sequence Min Post-Exposure Dark Time (us)
          1-bit Monochrome
          6
          200 - 400
          0*
          0*
          5
          200 - 399
          171
          31
          4
          400 - 799
          171
          31
          3
          800 - 1799
          171
          31
          2
          1800 - 3799
          171
          31
          1
          3800 - 7600
          171
          31
          1-bit RGB
          11
          451 - 799
          171
          31
          10
          800 - 1799
          171
          31
          9
          1800 - 3799
          171
          31
          8
          3800 - 7600
          171
          31
          8-bit Monochrome
          7
          2555 - 5110
          171
          31
          8-bit RGB
          0
          10912 - 21824
          171
          31

          *Sequence 6 is a special sequence with zero pre-exposure and post-exposure dark times. (Note: While running this sequence, a dark time equivalent to the exposure time of one pattern will be added at the start of every pattern set.)

          Notes:

          • Exposure times shorter than the above values are not possible. Longer exposure times will operate with decreased timing accuracy and behavior is not guaranteed.
          • Shorter dark times are not possible. Longer dark times can be used. The maximum possible dark times for a desired exposure time are:
            • Tmax pre-exposure dark time  = ( 6553us + tsequence min pre-exposure dark time ) * (Tdesired exposure / tsequence minimum exposure)
            • Tmax post-exposure dark time = ( 6553us + tsequence min post-exposure dark time ) * (Tdesired exposure / tsequence minimum exposure)
        • Splash Pattern Mode Timings:

          Pattern Type
          Sequence Index
          Exposure Time Range (us)
          Sequence Min Pre-Exposure Dark Time (us)
          Sequence Min Post-Exposure Dark Time (us)
          1 -bit Monochrome
          13
          793 - 1744
          171
          31
          8-bit Monochrome
          12
          7737 - 17034
          171
          31

          Notes:

          • The maximum pattern period (pre-exposure + exposure + post-exposure) cannot exceed 2184us for 1-bit splash patterns and 17476us for 8-bit splash patterns.
        • The listed minimum dark times are applicable for the minimum exposure time of each sequence. The dark times scale along with the exposure time as per the following equation:
          • Tmin required pre-exposure dark time  = tsequence min pre-exposure dark time * (Tdesired exposure / tsequence minimum exposure)
          • Tmin required post-exposure dark time = tsequence min post-exposure dark time * (Tdesired exposure / tsequence minimum exposure)

      • I2C command 0x9D (Read Validate Exposure Time) returns the minimum required pre-exposure and post-exposure dark times for a specific pattern type and given exposure time.