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Discussion Title Created date
DMA MMC SD Cards
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
Offset not being used
Guys I have a small routine that is not working.  Have a look below: /* * Get a new cluster bit from the File Allocation Table */ int get_cluster_bit(struct ff_file *...
Friday, 14 June 2019 - 16:14
clawson - data buffer
Hi Clawson, should I load one sector at a time into a data buffer or just load the entire cluster?  I'm guessing that to load one sector at a time would be best since it is...
Thursday, 6 June 2019 - 21:15
GettingStarted with USB
Hi freaks, I need to write a driver for a USB keyboard.  I however have not a clue on how to do this.  I' not familiar with USB.  Could anyone recommend a good book...
Monday, 3 June 2019 - 18:51
project playing up
Guys, I'm still having bother with my project, basically things like structures, malloc/free, and arrays are causing the system to fail.  Its a large project so I don't even...
Monday, 3 June 2019 - 18:49
structure problems
Hi guys, I have the following struct:   struct ff_file{     char folder_name[255];     unsigned int cluster_addr;     unsigned...
Friday, 31 May 2019 - 14:59
structure fails to update
Hi guys, I have a disturbing bug in my code that maybe one of you may have run into before.  The function is listed below. For some reason the contents are not getting...
Tuesday, 28 May 2019 - 19:06
Project Corrupted
Guys does your projects ever just go bad, in that they just won't run or start misbehaving?
Monday, 27 May 2019 - 22:35
can I ignore the following warning
The warning is as follows:  
Friday, 24 May 2019 - 14:47
SD_Read callback function not implemented
Guys, I need to find away to know when a read/write to the sdmmc card is finished, however it would appear that the software framework driver is not fully implemented.  Have...
Wednesday, 22 May 2019 - 19:39
memory allocation in Storage Media
Okay lads, whats your thinking about memory allocation for storage media.  When opening a file would you allocate for the entire contents or only a segment of a file for...
Sunday, 19 May 2019 - 19:22

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