DLPU082C August   2021  – March 2024 DLPC7540

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1 Scope
  5. 2 References
  6. 3 Acronyms
  7. 4 System Boot
    1. 4.1 Data In flash
    2. 4.2 Bootloader Application
    3. 4.3 Main Application
    4. 4.4 Commands Supported by Bootloader and Main Applications
    5. 4.5 Debug Terminal
    6. 4.6 HOST_IRQ/SYSTEM_BUSY
    7. 4.7 Heartbeat
    8. 4.8 Low-Level Fault
  8. 5 System Status
  9. 6 Version
  10. 7 Power Modes
  11. 8 Display Modes
  12. 9 Source Detection and Configuration
  13. 10Internal Sources
    1. 10.1 Test Patterns (TPG)
    2. 10.2 Solid Field (SFG) Color
    3. 10.3 Curtain
  14. 11Display Formatting
  15. 12Image Processing
  16. 13Warping
    1. 13.1 Control Point Table
    2. 13.2 Manual Warp Table
    3. 13.3 Table Constraints
    4. 13.4 Example Warp Table
    5. 13.5 Manual Warping Commands
      1. 13.5.1 CMD_SetManualWarpControlPoints [Command ID: 0x35, Destination: 4]
      2. 13.5.2 CMD_GetManualWarpControlPoints [Command ID: 0x35, Destination: 4]
      3. 13.5.3 CMD_WriteManualWarpTable [Opcode: 0x34, Destination: 4]
      4. 13.5.4 CMD_ReadManualWarpTable [Opcode: 0x34, Destination: 4]
      5. 13.5.5 CMD_ConfigureSmoothWarp [Command ID: 0x38, Destination: 4]
      6. 13.5.6 CMD_ApplyManualWarping [Command ID: 0x36, Destination: 4]
    6. 13.6 Optical (Lens) Distortion Correction
  17. 14Introduction to Blending
    1. 14.1  Blend Map Control Points
    2. 14.2  Blend Map Gain Values
    3. 14.3  Blend Map Offset Value
    4. 14.4  Constraints
    5. 14.5  Manual Blending Commands
      1. 14.5.1 CMD_EnableEdgeBlending [Command ID: 0x2F]
      2. 14.5.2 CMD_SetBlendMapControlPoints [Opcode: 0x2E]
      3. 14.5.3 CMD_ GetBlendMapControlPoints [Command ID: 0x2E]
      4. 14.5.4 CMD_SetBlendMapGainValues [Command ID: 0x2B]
      5. 14.5.5 CMD_ GetBlendMapGainValues [Command ID: 0x2B]
      6. 14.5.6 CMD_ SetBlendMapOffsetValues [Command ID: 0x2D]
      7. 14.5.7 CMD_ GetBlendMapOffsetValues [Command ID: 0x2D]
      8. 14.5.8 CMD_ApplyBlendMap [Command ID: 0x2C]
    6. 14.6  Manual Blending Application Commands
      1. 14.6.1 CMD_SetEdgeBlendingSystemParams [Command ID: 0x3D]
      2. 14.6.2 CMD_GetEdgeBlendingSystemParams [Command ID: 0x3D]
      3. 14.6.3 CMD_SetEdgeBlendingConfiguration [Command ID: 0x3E]
      4. 14.6.4 CMD_GetEdgeBlendingConfiguration [Command ID: 0x3E]
    7. 14.7  Cropping of Input Image for Blending Setup
    8. 14.8  Storing Edge Blend Configuration in EEPROM
    9. 14.9  Storing in EEPROM or Secondary Flash
    10. 14.10 Manual Blending GUI in Control Program
  18. 15Illumination Control
  19. 16Peripherals
    1. 16.1 GPIO
    2. 16.2 PWM
  20. 17Interface Protocol
    1. 17.1 Supported Interfaces
    2. 17.2 I2C Target
    3. 17.3 USB
  21. 18Command Protocol
    1. 18.1 Command Packet
    2. 18.2 Response Packet
    3. 18.3 Destination Details
    4. 18.4 Error Handling and Recovery
    5. 18.5 System Busy - I2C scenarios
      1. 18.5.1 GPIO Implementation
      2. 18.5.2 Short Status Response
    6. 18.6 Support for Variable Data Size
  22. 19Auto-Initialization Batch File
  23. 20Command Descriptions
  24. 21System Commands
    1. 21.1  3D
    2. 21.2  Administrative
    3. 21.3  Autolock
    4. 21.4  Bootloader
    5. 21.5  Calibration
    6. 21.6  Blending
    7. 21.7  Debug Internal
    8. 21.8  Debug
    9. 21.9  General Operation
    10. 21.10 Illumination
    11. 21.11 Image Processing
    12. 21.12 Manual WPC
    13. 21.13 Peripherals
    14. 21.14 Vision
    15. 21.15 Warping
  25.   Revision History

4.8 Low-Level Fault

When the controller startup sequence encounters an error condition, the controller transitions to bootloader mode and sets GPIO_23 (connected to an LED) HIGH to indicate a low-level fault condition. See the debug message printed in the UART debug terminal or with the Get Boot Hold Reason command to get more details about the cause of error. When the Arm processor detects one of the data abort, pre-fetch abort or undefined instruction exceptions, it starts blinking GPIO_23 in specific hex code format. During this error condition, communication with the controller is not possible. The only way to communicate with the controller is to analyze the hex error code from the pattern and then debug the hardware to fix the issue.