McFW about the parameters passed

Junqing Zhao

Hi all，

I am using DVRRDK3.0 with DM8168EVM.Now I am developing my algorithm in DSP.Now when the algorithm is finished，I set a flag =1，now I want to send the flag from dsp to arm，so I can disable some functon According to the flag.

Can I use System_linkControl cmd to send the flag and other parameters from dsp to arm？

Then in ARM side，how can I get the parameters，the Utils_msgGetPrm cmd seems is not supported ？

So how can I solve the problems？Please give me some suggestion on this，Thanks.

Junqing Zhao

over 13 years ago

0 Badri Narayanan over 13 years ago

TI__Guru 59700 points

Yes you can use System_linkControl from DSP side to send events back to ARM. You can refer code for sending event in

/dvr_rdk/mcfw/src_bios6/links_m3video/iva_dec/decLink_h264.c

System_linkControl(SYSTEM_LINK_ID_HOST,
                                 VSYS_EVENT_DECODER_ERROR,
                                  &(pChObj->decErrorMsg),
                                  sizeof(DecLink_ChErrorMsg),
                                  TRUE);

You will get a callback to the application specified callback that was registered using Vsys_registerEventHandler.

You can refer /dvr_rdk/demos/mcfw_api_demos/mcfw_demo/demo.c

Demo_eventHandler for example code.

0 Junqing Zhao over 13 years ago in reply to Badri Narayanan

Intellectual 770 points

Thanks for your reply. I have try the method, but it seems not work.

In the codes of DSP sides, I added the following code:

Vps_printf("zhao: video_object_detection num = %d \n ",obj_num);

System_linkControl(SYSTEM_LINK_ID_HOST, DSP_EVENT_OBJECT_DETECT, &obj_num, sizeof(int), TRUE);

The DSP_EVENT_OBJECT_DETECT command is defined by me,.

#define DSP_EVENT_OBJECT_DETECT 0xABABAB20

In ARM sides, demo.c, in function Demo_eventHandler, I added the following codes:

// added by zhao
if(eventId == DSP_EVENT_OBJECT_DETECT)
{
printf(" \n");
printf(" Zhao: Received event DSP_EVENT_OBJECT_DETECT [0x%04x]\n", eventId);

Zhao_GetObjectDetectStatus(pPrm);

}

The DSP_EVENT_OBJECT_DETECT is also defined : #define DSP_EVENT_OBJECT_DETECT 0xABABAB20

However,when I run the demo codes, the console only output:

[c6xdsp ] zhao: video_object_detection num = 5

It did not print the infomation that I added in demo.c, and it did not run the function "Zhao_GetObjectDetectStatus(pPrm);".

I do not know how to deal with it? Pls give me some help.

Thanks.

Junqing Zhao

0 Badri Narayanan over 13 years ago in reply to Junqing Zhao

TI__Guru 59700 points

Can you add a print in

/dvr_rdk/mcfw/src_linux/links/system/systemLink_tsk.c.

Int32 SystemLink_tskMain(struct OSA_TskHndl *pTsk, OSA_MsgHndl *pMsg, Uint32 curState)

Uint16 cmd = OSA_msgGetCmd(pMsg);

printf("\n!!!Receive cmd :%d\n",cmd );

0 Junqing Zhao over 13 years ago in reply to Badri Narayanan

Intellectual 770 points

Thanks for your reply.

I added the following codes in SystemLink_tskMain function：

printf("Zhao: Host Cmd [0x%08x]\n",OSA_msgGetCmd(pMsg));

The console output is ：

Zhao: Host Cmd [0x0000ab20].

However， the cmd I sent from DSP is 0xABABAB02. It seems that OSA_msgGetCmd() return value is 16bits cmd，but I set a 32bits cmd . Then the demo is not work. Is my understand Right？

But I have another doubt，in DSP sides（algLink_tsk.c）,the codes cmd = Utils_msgGetCmd(pMsg); the return cmd is a 32 bits value. So what makes this difference？

Thanks for your reply.

Junqing Zhao

0 Badri Narayanan over 13 years ago in reply to Junqing Zhao

TI__Guru 59700 points

You are right msgCmd is defined as16 bit in OSA_MsgHndl. I think you can change osa_msgq.h ro make

typedef struct OSA_MsgHndl {

OSA_MsgqHndl *pTo;
OSA_MsgqHndl *pFrom;
void         *pPrm;
int           status;
Uint16        cmd;
Uint16        flags;

} OSA_MsgHndl;

typedef struct OSA_MsgHndl {

OSA_MsgqHndl *pTo;
OSA_MsgqHndl *pFrom;
void         *pPrm;
int           status;
UInt32        cmd;
UInt32        flags;

} OSA_MsgHndl;

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McFW about the parameters passed