Changes between Initial Version and Version 1 of Docs/Prog/Manual/ApplicationLibraries/lib825ev/File/FindFlashDrive

Timestamp:

05/17/24 11:53:39 (6 months ago)

Author:

Don Wilson

Comment:

--

Docs/Prog/Manual/ApplicationLibraries/lib825ev/File/FindFlashDrive

@@ +1 @@
+= FindFlashDrive =
+Search for plugged in flash drives
+
+{{{
+bool FindFlashDrive(std::vector<string>& pathList, bool checkForUnmounted = false);
+}}}
+
+== Parameters == 
+
+pathList = a vector of std::string to be populated with the result paths found
+checkForUnmounted = If true will also check if drive is unmounted and mount it
+
+== Return Value ==
+
+This function returns true if any flash drive found/mounted.
+
+== Remarks ==
+
+The function reads /proc/mounts to obtain the result. 
+
+== Examples ==
+
+{{{
+  int result;
+  char writeFilePath[180];
+#if ARM64
+  vector<string> pathList;
+  if(FindFlashDrive(pathList, true) == false) {
+    result = -1;
+  } else {
+    result = 0;
+    // pathList item will already have a trailing slash
+    // so writeFilePath will become something like "/run/media/sda1/data.csv"
+    sprintf_s(writeFilePath, "%sdata.csv", pathList[0].c_str());
+  }
+#else
+  result = system("mount -t vfat /dev/sda1 /mnt/fl1");
+  strcpy(writeFilePath, "/mnt/fl1/data.csv");
+#endif
+  if(result != 0) {
+     DrawErrorBox("Error mounting USB drive", 2);
+  } else {
+      // ... Write data to flash drive
+
+#if ARM64
+    UnmountDirectory(pathList[0].c_str());
+#else
+    system("umount /mnt/fl1");
+#endif
+  }
+
+
+
+}}}
+
+
+== See Also ==
+
+
+