LPC 4350 SGPIO Camera interface

dudisasson — Mon, 18 Jun 2018 09:16:34 GMT

Hi,

i am trying to use the LPC4350 SGPIO camera interface.

i followed the example code and i am able to get the data the camera.

the problem is that until i get the data from the last slices, the content of the reg_ss is already changed.

the BASE_CLK_PERIPH is 200MB, the PIXCLK from the sensor is 20MB.

i am using the SGPIO interrupt from M4 and the SDRAM i am writing to is connected using the EMC interface.

the code i am using when getting an interrupt from slice A is as follows:

if (r->status_1 & 1)

{

r->clr_status_1 = 0x1;

{

*pxl_p++ = r->reg_ss[pin7Slice];

*pxl_p++ = r->reg_ss[pin6Slice];

*pxl_p++ = r->reg_ss[pin5Slice];

*pxl_p++ = r->reg_ss[pin4Slice];

*pxl_p++ = r->reg_ss[pin3Slice];

*pxl_p++ = r->reg_ss[pin2Slice];

*pxl_p++ = r->reg_ss[pin1Slice];

*pxl_p++ = r->reg_ss[pin0Slice];

}

any idea how can solve it?

Thanks,

Dudi.

Re: LPC 4350 SGPIO Camera interface

Hui_Ma — Thu, 21 Jun 2018 03:07:43 GMT

Hi Dudi,

Do you have tried to slow down the PIXCLK to 12MHz?

If the issue still there?

Have a great day,
Mike

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