Ticket Name: Linux/TDA2: cannot print inf Query Text: Part Number: TDA2 Other Parts Discussed in Thread: SYSBIOS Tool/software: Linux i add my algorithm code in (vision_sdk\sample_app\src\rtos\alg_plugins\mycode.c ) make is pass , in frameCopyAlgoLocalDma.c i add Vps_printf(" wordWidth: DMA: height CH (TCC) = %d (%d)\n", pAlgHandle->frameCopyObj.maxWidth,pAlgHandle->frameCopyObj.maxHeight ) is done, but in mycode.c i use Vps_printf never print anything! Responses: Please add a sleep after the print and see if it appears Regards Chetan.M Hi Chetan.M but sleep is undifined, Regards shuai Hi, Use Task_sleep() Regards, Anuj Hi: Anuj I use Task_sleep(),but undefined symbol Task_sleep , i have add #include #include Regards, shuai Hi, I did not understand your question. if you are getting any compilation error then please take a refrence of a file where TAsk_sleep has been used. Regards, Anuj Hi:Anuj Task_sleep() is undefined , What header should be included? Regards, Shuai #include Regards, Anuj