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Discussion Title Created date
Sorting algorithm
Guys, I have a simple Bubble Sort: /** * Bubble Sort Elements */ void long_sort_directories(struct long_name * elements, int nr_elements){ /** * Sort Directory List using...
Thursday, 24 October 2019 - 18:35
New pair of eyes please
  Okay, I have two functions, the first formats the MSDOS file name, i.e. creates it.  The second searches for the said name and if found changes the name. Okay, still...
Wednesday, 23 October 2019 - 21:33
FAT memory allocation
Hi guys, I have the FAT32 filing system and also the exFAT.  Both use 2 memory arrays that are the size of the cluster size elected by the User when formatting.   Do you...
Monday, 14 October 2019 - 00:10
hidden gem
Guys, I found this wee gem on the internet.  Instead of say using a for loop to go from 10 to 0 ect you can use the -->   for example.   int x = 10;  ...
Wednesday, 9 October 2019 - 02:01
Link List
Write guys, this code is throwing out rubbish.  Output is:   fat->cluster_nr = 0x1234; dir_insert_cluster(fat); fat->cluster_nr = 0x4321; dir_insert_cluster(fat...
Thursday, 19 September 2019 - 19:43
not setting cluster 128
Hi guys, have a wee look at the code below and see if you can help me to discover why when the cluster number is 0x80/128 that it does not set the field properly. After I allocate...
Wednesday, 18 September 2019 - 16:09
clawson's expertise required (reading FAT32 directories)
Hi clawson, quick question!  When I create more than 63 folders in FAT32 only 63 are displayed when I insert the media into the computer.  Now 63 is a clue I'm guessing...
Wednesday, 11 September 2019 - 15:29
help with pointers
I have the following routine for checking if a pointer has gone out of bounds and resetting it back to the start.   char boudary_configure(struct ff_file * stream, char **...
Monday, 9 September 2019 - 22:47
filing systems
Guys when should I update files when working with them. Like it would be very wasteful to write data back to the storage media everytime I do a putc.   WM.   The...
Tuesday, 3 September 2019 - 21:19
interrupt vectors
Guy, I need to disable interrupts before the device make the vector jump show below using, "cpsid if" instruction.    /* Exception vectors *******************/ ....
Tuesday, 27 August 2019 - 22:46
Disabling and Enabling Global Interrupts
Will the following two assembly commands work to disable and enable global Interrupts on the SAMA5D44?   asm("cpsie if"); asm("cpsid if");I know they work for the SAM 7...
Friday, 23 August 2019 - 22:56
Interrupts & Context switching
Hi guys, I'll describe the operation first then show you what I mean.     Before I enter the interrupt the system calls a function to prepare for the interrupt and clear...
Monday, 19 August 2019 - 19:15

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