/** Task to print device information through the serial port, and open/close a test PIMA session with the * attached Still Image device. */ void Camera_Task(void) { USB_USBTask(); if (USB_HostState != HOST_STATE_Configured) return; puts_P(PSTR("Retrieving Device Info...\r\n")); _delay_ms(50); Camera_GetModel(); Camera_Open(); // Camera_SetParam(EOS_DPC_ISO, EOS_DVC_ISO_1250); Camera_Capture(); Camera_Close(); }
void Camera_Capture(void) { if (USB_HostState != HOST_STATE_Configured) return; uint8_t ErrorCode; puts_P(PSTR("Taking picture...\r\n")); _delay_ms(50); PIMA_SendBlock = (PIMA_Container_t) { .DataLength = PIMA_COMMAND_SIZE(0), .Type = PIMA_CONTAINER_CommandBlock, .Code = EOS_OC_CAPTURE, .TransactionID = 0x00000001, .Params = {}, }; /* Send the GETDEVICEINFO block */ SImage_SendBlockHeader(); /* Receive the response data block */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 8\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } return; } void Camera_SetParam(uint32_t param, uint32_t val) { if (USB_HostState != HOST_STATE_Configured) return; uint8_t ErrorCode; puts_P(PSTR("Changing ISO...\r\n")); _delay_ms(50); PIMA_SendBlock = (PIMA_Container_t) { .DataLength = PIMA_COMMAND_SIZE(1)+2, .Type = PIMA_CONTAINER_CommandBlock, .Code = EOS_OC_PROPERTY_SET, .TransactionID = 0x00000001, .Params = {param}, }; /* Send the GETDEVICEINFO block */ SImage_SendBlockHeader(); uint8_t *SendData = ((uint8_t*)((void*)(&val))); /* Receive the response data block */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 9\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } SImage_SendData(SendData, 2); /* Receive the response data block */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 12\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } return; } void Camera_GetModel(void) { if (USB_HostState != HOST_STATE_Configured) return; uint8_t ErrorCode; PIMA_SendBlock = (PIMA_Container_t) { .DataLength = PIMA_COMMAND_SIZE(0), .Type = PIMA_CONTAINER_CommandBlock, .Code = PIMA_OPERATION_GETDEVICEINFO, .TransactionID = 0x00000000, .Params = {}, }; /* Send the GETDEVICEINFO block */ SImage_SendBlockHeader(); /* Receive the response data block */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 1\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } /* Calculate the size of the returned device info data structure */ uint16_t DeviceInfoSize = (PIMA_ReceivedBlock.DataLength - PIMA_COMMAND_SIZE(0)); /* Create a buffer large enough to hold the entire device info */ uint8_t DeviceInfo[DeviceInfoSize]; /* Read in the data block data (containing device info) */ SImage_ReadData(DeviceInfo, DeviceInfoSize); /* Once all the data has been read, the pipe must be cleared before the response can be sent */ Pipe_ClearIN(); /* Create a pointer for walking through the info dataset */ uint8_t* DeviceInfoPos = DeviceInfo; /* Skip over the data before the unicode device information strings */ DeviceInfoPos += 8; // Skip to VendorExtensionDesc String DeviceInfoPos += (1 + UNICODE_STRING_LENGTH(*DeviceInfoPos)); // Skip over VendorExtensionDesc String DeviceInfoPos += 2; // Skip over FunctionalMode DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Operations Array DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Events Array DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Supported Device Properties Array DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Capture Formats Array DeviceInfoPos += (4 + (*(uint32_t*)DeviceInfoPos << 1)); // Skip over Image Formats Array /* Extract and convert the Manufacturer Unicode string to ASCII and print it through the USART */ char Manufacturer[*DeviceInfoPos]; UnicodeToASCII(DeviceInfoPos, Manufacturer); printf_P(PSTR(" Manufacturer: %s\r\n"), Manufacturer); _delay_ms(50); DeviceInfoPos += 1 + UNICODE_STRING_LENGTH(*DeviceInfoPos); // Skip over Manufacturer String /* Extract and convert the Model Unicode string to ASCII and print it through the USART */ char Model[*DeviceInfoPos]; UnicodeToASCII(DeviceInfoPos, Model); printf_P(PSTR(" Model: %s\r\n"), Model); _delay_ms(50); DeviceInfoPos += 1 + UNICODE_STRING_LENGTH(*DeviceInfoPos); // Skip over Model String /* Extract and convert the Device Version Unicode string to ASCII and print it through the USART */ char DeviceVersion[*DeviceInfoPos]; UnicodeToASCII(DeviceInfoPos, DeviceVersion); printf_P(PSTR(" Device Version: %s\r\n\r\n"), DeviceVersion); _delay_ms(50); /* Receive the final response block from the device */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 2\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } /* Verify that the command completed successfully */ /* if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK)) { puts_P(PSTR("Error 3\r\n")); ShowCommandError(PIMA_ReceivedBlock.Code, true); USB_Host_SetDeviceConfiguration(0); return; } */ return; } /** Task to print device information through the serial port, and open/close a test PIMA session with the * attached Still Image device. */ void Camera_Task(void) { if (USB_HostState != HOST_STATE_Configured) return; uint8_t ErrorCode; /* Indicate device busy via the status LEDs */ // LEDs_SetAllLEDs(LEDMASK_USB_BUSY); puts_P(PSTR("Retrieving Device Info...\r\n")); _delay_ms(50); Camera_GetModel(); puts_P(PSTR("Opening Session...\r\n")); _delay_ms(50); PIMA_SendBlock = (PIMA_Container_t) { .DataLength = PIMA_COMMAND_SIZE(1), .Type = PIMA_CONTAINER_CommandBlock, .Code = PIMA_OPERATION_OPENSESSION, .TransactionID = 0x00000000, .Params = {0x00000001}, }; /* Send the OPENSESSION block, open a session with an ID of 0x0001 */ SImage_SendBlockHeader(); /* Receive the response block from the device */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 4\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } /* Verify that the command completed successfully */ /* if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK)) { puts_P(PSTR("Error 5\r\n")); ShowCommandError(PIMA_ReceivedBlock.Code, true); USB_Host_SetDeviceConfiguration(0); return; } */ // Camera_SetParam(EOS_DPC_ISO, EOS_DVC_ISO_1250); Camera_Capture(); Camera_Close(); } void Camera_Close(void) { puts_P(PSTR("Closing Session...\r\n")); _delay_ms(50); uint8_t ErrorCode; PIMA_SendBlock = (PIMA_Container_t) { .DataLength = PIMA_COMMAND_SIZE(1), .Type = PIMA_CONTAINER_CommandBlock, .Code = PIMA_OPERATION_CLOSESESSION, .TransactionID = 0x00000001, .Params = {0x00000001}, }; /* Send the CLOSESESSION block, close the session with an ID of 0x0001 */ SImage_SendBlockHeader(); /* Receive the response block from the device */ if ((ErrorCode = SImage_ReceiveBlockHeader()) != PIPE_RWSTREAM_NoError) { puts_P(PSTR("Error 6\r\n")); ShowCommandError(ErrorCode, false); USB_Host_SetDeviceConfiguration(0); return; } /* Verify that the command completed successfully */ /* if ((PIMA_ReceivedBlock.Type != PIMA_CONTAINER_ResponseBlock) || (PIMA_ReceivedBlock.Code != PIMA_RESPONSE_OK)) { puts_P(PSTR("Error 7\r\n")); ShowCommandError(PIMA_ReceivedBlock.Code, true); USB_Host_SetDeviceConfiguration(0); return; } */ puts_P(PSTR("Done.\r\n")); _delay_ms(50); /* Indicate device no longer busy */ // LEDs_SetAllLEDs(LEDMASK_USB_READY); USB_Host_SetDeviceConfiguration(0); return; } /** Function to convert a given Unicode encoded string to ASCII. This function will only work correctly on Unicode * strings which contain ASCII printable characters only. * * \param[in] UnicodeString Pointer to a Unicode encoded input string * \param[out] Buffer Pointer to a buffer where the converted ASCII string should be stored */ void UnicodeToASCII(uint8_t* UnicodeString, char* Buffer) { /* Get the number of characters in the string, skip to the start of the string data */ uint8_t CharactersRemaining = *(UnicodeString++); /* Loop through the entire unicode string */ while (CharactersRemaining--) { /* Load in the next unicode character (only the lower byte, as only Unicode coded ASCII is supported) */ *(Buffer++) = *UnicodeString; /* Jump to the next unicode character */ UnicodeString += 2; } /* Null terminate the string */ *Buffer = 0; } /** Displays a PIMA command error via the device's serial port. * * \param[in] ErrorCode Error code of the function which failed to complete successfully * \param[in] ResponseCodeError Indicates if the error is due to a command failed indication from the device, or a communication failure */ void ShowCommandError(uint8_t ErrorCode, bool ResponseCodeError) { const char* FailureType = ((ResponseCodeError) ? PSTR("Response Code != OK") : PSTR("Transaction Fail")); printf_P(PSTR( "Command Error (%S).\r\n" " -- Error Code %d\r\n" ), FailureType, ErrorCode); _delay_ms(50); /* Indicate error via status LEDs */ // LEDs_SetAllLEDs(LEDMASK_USB_ERROR); }