uint8_t PTP_Transaction(uint16_t opCode, uint8_t receive_data, uint8_t paramCount, uint32_t *params, uint8_t dataBytes, uint8_t *data)
{
if(PTP_Error) return PTP_RETURN_ERROR;
if(PTP_Bytes_Remaining > 0) return PTP_FetchData(0);
uint8_t err;
PTP_Run_Task = 0; // Pause task while we're busy with the transaction
if(paramCount > 0 && params)
err = SI_Host_SendCommand(&DigitalCamera_SI_Interface, CPU_TO_LE16(opCode), paramCount, params);
else
err = SI_Host_SendCommand(&DigitalCamera_SI_Interface, CPU_TO_LE16(opCode), 0, NULL);
if(!err && dataBytes > 0 && data) // send data
{
DigitalCamera_SI_Interface.State.TransactionID--;
PIMA_Block = (PIMA_Container_t)
{
.DataLength = CPU_TO_LE32(PIMA_DATA_SIZE(dataBytes)),
.Type = CPU_TO_LE16(PIMA_CONTAINER_DataBlock),
.Code = CPU_TO_LE16(opCode)
};
memcpy(&PIMA_Block.Params, data, dataBytes);
err = SI_Host_SendBlockHeader(&DigitalCamera_SI_Interface, &PIMA_Block);
}
/** Task to manage an enumerated USB Still Image device once connected, to manage a
* new PIMA session in order to send commands to the attached device.
*/
void StillImageHost_Task(void)
{
if (USB_HostState != HOST_STATE_Configured)
return;
puts_P(PSTR("Opening Session...\r\n"));
if (SI_Host_OpenSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
{
puts_P(PSTR("Could not open PIMA session.\r\n"));
USB_Host_SetDeviceConfiguration(0);
return;
}
puts_P(PSTR("Turning off Device...\r\n"));
SI_Host_SendCommand(&DigitalCamera_SI_Interface, 0x1013, 0, NULL);
if (SI_Host_ReceiveResponse(&DigitalCamera_SI_Interface))
{
puts_P(PSTR("Could not turn off device.\r\n"));
USB_Host_SetDeviceConfiguration(0);
return;
}
puts_P(PSTR("Device Off.\r\n"));
puts_P(PSTR("Closing Session...\r\n"));
if (SI_Host_CloseSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
{
puts_P(PSTR("Could not close PIMA session.\r\n"));
USB_Host_SetDeviceConfiguration(0);
return;
}
LEDs_SetAllLEDs(LEDMASK_USB_READY);
USB_Host_SetDeviceConfiguration(0);
}
/** Main program entry point. This routine configures the hardware required by the application, then
* enters a loop to run the application tasks in sequence.
*/
int main(void)
{
SetupHardware();
puts_P(PSTR(ESC_FG_CYAN "Still Image Host Demo running.\r\n" ESC_FG_WHITE));
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
sei();
for (;;)
{
switch (USB_HostState)
{
case HOST_STATE_Addressed:
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
uint16_t ConfigDescriptorSize;
uint8_t ConfigDescriptorData[512];
if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
{
puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
if (SI_Host_ConfigurePipes(&DigitalCamera_SI_Interface,
ConfigDescriptorSize, ConfigDescriptorData) != SI_ENUMERROR_NoError)
{
puts_P(PSTR("Attached Device Not a Valid Still Image Class Device.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
{
puts_P(PSTR("Error Setting Device Configuration.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
puts_P(PSTR("Still Image Device Enumerated.\r\n"));
LEDs_SetAllLEDs(LEDMASK_USB_READY);
USB_HostState = HOST_STATE_Configured;
break;
case HOST_STATE_Configured:
puts_P(PSTR("Opening Session...\r\n"));
if (SI_Host_OpenSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
{
puts_P(PSTR("Could not open PIMA session.\r\n"));
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
puts_P(PSTR("Turning off Device...\r\n"));
SI_Host_SendCommand(&DigitalCamera_SI_Interface, 0x1013, 0, NULL);
if (SI_Host_ReceiveResponse(&DigitalCamera_SI_Interface))
{
puts_P(PSTR("Could not turn off device.\r\n"));
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
puts_P(PSTR("Device Off.\r\n"));
puts_P(PSTR("Closing Session...\r\n"));
if (SI_Host_CloseSession(&DigitalCamera_SI_Interface) != PIPE_RWSTREAM_NoError)
{
puts_P(PSTR("Could not close PIMA session.\r\n"));
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
LEDs_SetAllLEDs(LEDMASK_USB_READY);
USB_HostState = HOST_STATE_WaitForDeviceRemoval;
break;
}
SI_Host_USBTask(&DigitalCamera_SI_Interface);
USB_USBTask();
}
}
