ucos_2.52_lwip_1.40_vc_ok.rar_40_lwip vc_ucos vc_ucos2_vc lwip

[Howto use this uC/OS-II port on TI C6000 DSP] -------------------------------------------------- This port was for uC/OS-II v2.52. It was done by zengming99@mails.tsinghua.edu.cn. And, this port can also be download from the uC/OS-II official website. To develop your own project with this uC/OS-II port, please pay attention to the following�� * uC/OS-II and lwIP together was such a large project, that it required to turn the option "Memory Models" to "Far Aggregate Data". This option can be set in "Project/Build Options/Advanced" in CCS. * TI DSP CodeComposerStudio can optimize the ISR function automatically. But it's not suitable for uC/OS task switch. So.... # Nerver declare an ISR function with "Interrupt" keyword or "#pragma INTERRUPT (func)" # ISR function should just be a "void ISR(void)" type. Call DSP_C6x_Save() at the beginning and DSP_C6x_Resume() at the end of ISR function. OSTickISR (ISR for Timer) should be a very clear example�� //--------------------------------------------------------------------------- void OSTickISR(void) { DSP_C6x_Save(); OSIntEnter(); if (OSIntNesting == 1) { OSTCBCur->OSTCBStkPtr = (OS_STK *) DSP_C6x_GetCurrentSP(); } /* Actual operations for this interrupt..... */ OSTimeTick(); /* .................. End .................. */ OSIntExit(); DSP_C6x_Resume(); asm (" nop 5"); //important! // this can avoid a stack error when compile with the optimization! } //---------------------------------------------------------------------------- # In addition, you can set the "Interlisting" option in "Build Options/Feedback", and have a look at the ASM code of your ISR fuction. Mack sure that just 8 bytes was push in stack, before the DSP_C6x_Save() was called. That should be something like "STW B4,*SP--(8)" Or else, the uC/OS-II would run away when this interrupt happens. Zeng, Ming 2005-01-18