Still Image Class Host Mode Driver

lpcware — Wed, 15 Jun 2016 16:49:29 GMT

Content originally posted in LPCWare by Pascal on Tue Apr 03 05:48:09 MST 2012
Hi

I am new to nxpUSBLib. I am trying to develop a embedded capture controller for my Nikon D90.

I got the library and my project compiling and I get called back in EVENT_USB_Host_DeviceEnumerationComplete after attaching my camera. I then configure the pipes (SI_Host_ConfigurePipes) and set the configuration (USB_Host_SetDeviceConfiguration) which all works without errors.

As a first step, I want to retrieve a device-info using GetDeviceInfo-command.
<code>
uint32_t params[] = {0x00000000, 0x00000000, 0x00000000}; /* According to PIMA must be all 0 */

errCode = SI_Host_SendCommand (&mySIInterfaceInfo, 0x1001, 3, params); /* 0x1001 is operation code "GetDeviceInfo" */
</code>
I am a bit stuck here now. I am not sure how to read the data. As I see from PIMA, there is no event to notify about data ready to read. Do I need to poll? Poll for what? After successful polling, use SI_Host_ReadData to retrieve data and then check for response received with SI_Host_ReceiveResponse?

Any tips and suggestions to bring some light into the dark are highly appreciated!

Thanks and best regards!

LPC MicrocontrollersのトピックStill Image Class Host Mode Driver

Still Image Class Host Mode Driver