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greiman / UsbFat

Arduino FAT32/FAT16 library for USB drives.
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compilation error in UsbFatDemo example #13

Closed hody00 closed 4 years ago

hody00 commented 4 years ago

hello :)

I tried to run UsbFatDemo example and got this compilation error:

Arduino:1.8.13 (Windows Store 1.8.42.0) (Windows 10), board:"Arduino Mega ADK"

C:\Users\hoday\AppData\Local\Temp\ccOlzTjz.ltrans0.ltrans.o: In function `ls':

sketch/FatFileSystem.h:185: undefined reference to `FatFile::ls(Print*, unsigned char, unsigned char)'

C:\Users\hoday\AppData\Local\Temp\ccOlzTjz.ltrans0.ltrans.o: In function `open':

sketch/FatFile.cpp:395: undefined reference to `FatFile::parsePathName(char const*, fname_t*, char const**)'

sketch/FatFile.cpp:402: undefined reference to `FatFile::open(FatFile*, fname_t*, unsigned char)'

sketch/FatFile.cpp:410: undefined reference to `FatFile::open(FatFile*, fname_t*, unsigned char)'

collect2.exe: error: ld returned 1 exit status

exit status 1

it seems like several functions were declared but not implemented.

I cant just delete declerations because those functions are called inside the code..

Any advice?

greiman commented 4 years ago

This repository contains two libraries. You must install the USB_Host_Shield_2.0 and UsbFat folders in your libraries folder. Don't copy the UsbFat-master folder, just copy the above folders.

It is six years old but still seems to compile and work on a Mega ADK. But I am no longer maintaining it since new versions of USB_Host_Shield_2.0 library fail. You must fix any bug yourself.

Here is the output from the UsbFatDemo example today with the 1.18.3 Arduino IDE.

FreeRam 7042
Type any character to begin

Volume Size: 8270 MB

2015-08-15 08:00:08          0 System Volume Information/
1980-00-00 00:00:00         11 usbtest.txt
2000-01-01 01:00:00         11 test file.txt
2015-08-22 09:54:48    3255999 Intel_Chipset_Win10_V10_0_27.zip
2015-08-22 09:54:16   13600728 Realtek_LAN_Win10_V1015052015.zip
2015-08-22 09:55:50          0 Intel_Chipset_Win10_V10_0_27/
2015-08-22 09:56:00          0 Realtek_LAN_Win10_V1015052015/

Done
hody00 commented 4 years ago

you are right, turns out I didn't include all the relevant libraries.. It works! Thanks :)

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