SBC Board: Trouble executing grabber PreStart()

RobShand — Wed, 16 Mar 2022 12:37:18 GMT

I'm a newbie to S32DS.

THE ENVIRONMENT

I have S32DS 3.4.3 with VSDK 1.7 installed, and I have the SBS-S32V234 development board, which has two MIPI camera's connected. The camera type is OV10640CSP-S32V

THE CHALLENGE

As a first step, I want to stream video from one of the camera's to the HDMI output

THE SETUP

I first created an ISP project based upon ov10640_default, and emitted it to my Linux A53 application project without problems.

Following guidance from an NXP tutorial, I have tailored some defines in isp_user_define.h for the camera as follows, which I think is correct:

#define WIDTH_DDR 1288
#define HEIGHT_DDR 732
#define M_NUM_OUT_LINES (732)
#define MULTITRIGGER 0
#define DDR_OUT_BUFFER_CNT 6
#define LOOP_NUM 30

#define DCU_BPP DCU_BPP_24

In addition, this is what my io_config() function looks like:

void io_config(sdi_grabber *lpGrabber)
{
// *** prepare IOs ***
sdi_FdmaIO *lpFdma = (sdi_FdmaIO*)lpGrabber->IoGet(SEQ_OTHRIX_FDMA);
// modify DDR frame geometry to fit display output
SDI_ImageDescriptor lFrmDesc = SDI_ImageDescriptor(WIDTH_DDR, HEIGHT_DDR, RGB888);
lpFdma->DdrBufferDescSet(FDMA_IX_CAM_OUTPUT, lFrmDesc);
//*** allocate DDR buffers ***
lpFdma->DdrBuffersAlloc(FDMA_IX_CAM_OUTPUT, DDR_OUT_BUFFER_CNT);
}

THE PROBLEM

After compiling the app, and entering debug mode, stepping through io_config is fine, but the subsequent call returns -1, which indicates an error:

LIB_RESULT result = lpGrabber->PreStart();

I'm a bit unsure of what else I can look for to diagnose this, and the error code is quite unhelpful.

Can anybody think of a few things I can try or check to resolve this?

Kind Regards,

Rob

Re: SBC Board: Trouble executing grabber PreStart()

Yu_Fu — Thu, 14 Apr 2022 01:04:29 GMT

Hi, Rob,

What did you change in your project except "isp_user_define.h"? Pls be careful when you modify ISP, because some change may be not supported by camera.

Re: SBC Board: Trouble executing grabber PreStart()

RobShand — Thu, 14 Apr 2022 07:58:55 GMT

Hi Yu,

Thanks for responding. I actually resolved the problem. The ISP does not generate the proper source for this camera, so I wrote my own one, which I submitted to NXP who are keen to build it in their nest BSP release.

Kind Regards,

Rob

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SBC Board: Trouble executing grabber PreStart()

Re: SBC Board: Trouble executing grabber PreStart()

Re: SBC Board: Trouble executing grabber PreStart()