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TDA2EG: sample_app nullsrc->display nothing showed on LCD

HUI
Prodigy 250 points

Part Number: TDA2EG

Hi,

i download TI Vision SDK, PROCESSOR_SDK_VISION_03_02_00_00

then build sample_app with tda2xx_evm_linux_all, did not change any source code.

connect lcd screen on TI EVM board through HDMI interface. run sample_app follow the guideline.

There is nothing showed on screen.  

[HOST] [EVE3  ]   1126.506405 s:  SYSTEM: SW Message Box Msg Pool, Free Msg Count = 1023 ^M                      
 [HOST] [EVE3  ]   1126.506710 s:  SYSTEM: Heap = LOCAL_L2             @ 0x40020000, Total size = 22528 B (22 KB),
 [HOST] [EVE3  ]   1126.507289 s:  SYSTEM: Heap = LOCAL_DDR            @ 0x00000000, Total size = 262144 B (256 KB)
 [HOST] [EVE4  ]   1126.508387 s:  SYSTEM: SW Message Box Msg Pool, Free Msg Count = 1023 ^M                      
 [HOST] [EVE4  ]   1126.508723 s:  SYSTEM: Heap = LOCAL_L2             @ 0x40020000, Total size = 22528 B (22 KB),
 [HOST] [EVE4  ]   1126.509272 s:  SYSTEM: Heap = LOCAL_DDR            @ 0x00000000, Total size = 262144 B (256 KB)
 [HOST] [IPU2  ]   1126.510187 s:  SYSTEM: SW Message Box Msg Pool, Free Msg Count = 1023 ^M                      
 [HOST] [IPU2  ]   1126.510309 s:  SYSTEM: Heap = LOCAL_DDR            @ 0x00000000, Total size = 262144 B (256 KB)
 [HOST] [IPU2  ]   1126.510492 s:  SYSTEM: Heap = SR_OCMC              @ 0x00000000, Total size = 0 B (0 KB), Free
 [HOST] [IPU2  ]   1126.510644 s:  SYSTEM: Heap = SR_DDR_CACHED        @ 0x84203000, Total size = 346030080 B (330
 [HOST] [IPU2  ]   1126.510858 s:  SYSTEM: Heap = SR_DDR_NON_CACHED    @ 0xa0100000, Total size = 1045376 B (0 MB),
 [HOST] [IPU2  ]   1126.511346 s:  DISPLAY: Start in progress !!!^M                                               
 [HOST] [IPU2  ]   1126.511437 s:  DISPLAY: Start Done !!!^M 

log added by myself                                                      
 [HOST] [HOST  ]   1126.545812 s: IpcOutLink_tskRun SYSTEM_CMD_NEW_DATA^M                                         
 [HOST] [DSP1  ]   1126.545873 s: IpcInLink_tskMain SYSTEM_CMD_NEW_DATA ^M                                        
 [HOST] [IPU2  ]   1126.546757 s: IpcInLink_tskMain SYSTEM_CMD_NEW_DATA ^M                                        
 [HOST] [IPU2  ]   1126.547001 s: DisplayLink_tskRun new data coming ^M                                           
 [HOST] [HOST  ]   1126.578600 s: IpcOutLink_tskRun SYSTEM_CMD_NEW_DATA^M                                         
 [HOST] [DSP1  ]   1126.578753 s: IpcInLink_tskMain SYSTEM_CMD_NEW_DATA ^M                                        
 [HOST] [IPU2  ]   1126.579607 s: IpcInLink_tskMain SYSTEM_CMD_NEW_DATA ^M                                        
 [HOST] [IPU2  ]   1126.579820 s: DisplayLink_tskRun new data coming ^M

Best regards

HUI

  • 0
    TI__Expert 3970 points
    Hello ,

    connect lcd screen on TI EVM board through HDMI interface
    you have connected a HDMI Television .? or a LCD via some other board .?

    if you need LCD (ONLY LG 10.1" Supported).
    refer section 3.3 in vision sdk Linux User guide

    Build Linux Vision SDK for LCD display (M4 Display)

    Note: Only TDA2xx and TDA2ex support 10.1” LG LCD.
    You must follow all the steps in software installation and build.
    Change the dbt picked in the uenv.txt from
    fdtfile=dra7-evm-infoadas.dtb -->fdtfile= dra7-evm-infoadas-lcd-lg.dtb for tda2xx
    fdtfile=dra72-evm-infoadas.dtb --> fdtfile=dra72-evm-infoadas-lcd-lg.dtb for tda2ex

    Regards
    Chetan.M
  • 0 in reply to Chetan Matad
    Prodigy 250 points
    Hi Chetan,
    Thank you for your reply.
    I connect screen through HDMI interface.
    The reason has been found, the HDMI cable has some issue.
    Now this case can run, TI logo can be showed on screen.