Hi Francesco,
Hardware check:
- Please take a look at the GPIF II Designer project. In the interface definition, you can see which GPIOs are used for FV, LV, PCLK and data lines.
Make sure that your setup (interconnect board + image sensor) is according to that.
You can also probe these lines to check if you are getting the signals(PCLK, FV and LV) as expected.
Firmware check:
- In the uvc descriptors, check /* Class specific Uncompressed VS format descriptor */ and /* Class specific Uncompressed VS frame descriptor */ - make sure that the values entered here correspond to the resolution and speed at which image sensor is giving the data out.
- Then check glProbeCtrl (probe control structure) for frame size and frame interval
- Then check whether you are getting CY_FX_USB_UVC_SET_CUR_REQ for CY_FX_UVC_COMMIT_CTRL
(please refer to AN75779 firmware code for what I am referring to)
There is a switch case in the firmware where this request is handled - this is where image sensor is also configured to that particular resolution.
You can put debug prints to see whether you are getting this request.
Regards,
Hemanth
Hemanth
