Type in the full discussion title or a part of it.
Discussion Title Created date
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
USB Stack Development Setup
Hi freaks,   I'm looking to start to learn the USB protocol.  So first of all I've found USB sniffer programs, a bit like Winshark.  How would I go about connecting...
Wednesday, 14 August 2019 - 20:42
help with Bubble Sort
Guys, i'm working on a bubble sort and its only resulting in a semi sorted list.  Long file names are not being sorted properly.   for (l = 0; l < entry_nr; l...
Tuesday, 16 July 2019 - 14:49
ternary operator virginity
Why is this failing to compile?   (nr_entries1 > nr_entries2) ? nr_entries = nr_entries1 : nr_entries = nr_entries2; 
Sunday, 14 July 2019 - 17:08
allocating memory to an array of pointers doesn't work
Hi guys, what's wrong with this???   char * strings[10];; for(int i = 0; i < 10; i++) strings[i] = safe_malloc(255); 
Saturday, 13 July 2019 - 20:19
code never executed
Hi guys, I have a function and I set a value, "boundary_violation", but later when I test it, it never executes?  Have a look at the snapshot.  // locate number of...
Monday, 1 July 2019 - 17:48
this one is for clawson
clawson, when a directory entry occurs at the boundary of a cluster do you split the directory between the two clusters, or move on to the next cluster and not split the entry?
Saturday, 29 June 2019 - 02:08
Hi guys, I'm preparing to start USB development.  Can I use the CDC class for things like keyboards and mass storage? I'm waiting on a book called "Embedded USB".  ...
Sunday, 23 June 2019 - 17:19
Just how fast is the DMA transfer between memory(array) and sd card?  I'm thinking of losing the need for buffers to hold the (data and directory) clusters and loading/saving...
Wednesday, 19 June 2019 - 01:04
Raspberry Pi
Guys, what the Raspberry Pi like for embedded stuff, not Linux development? It's extremely cheap at £35 with 1 Gig of DDR RAM?   I suspect there is lots of baremetal stuff on...
Tuesday, 18 June 2019 - 15:49