Activity
From 01/19/2015 to 02/17/2015
02/17/2015
- MA 11:41 AM Software Development: RE: Alter Ethernet MAC
- Thanks Jonathan, that's exactly what I was after.
- MW 11:41 AM Software Development: RE: Alter Ethernet MAC
- You might also try this technique, though I am not sure if the current version of the 3.2 kernel has this command line option implemented:
http://developer.ridgerun.com/wiki/index.php/How_to_pass_ethernet_address_to_linux_kernel_ether... - JC 11:26 AM Software Development: RE: Alter Ethernet MAC
- Mostafa,
We store the mac address on a eeprom on the SoM. The settings stored on this can be accessed using the factoryconfig command in U-boot. Beware that you can brick the SOM if you change some of the other fields. - Hi, is it possible to alter the 'burned-in' MAC address of an L138F? I know that I can change it using 'ifconfig eth0 hw ether XX:XX:XX:XX:XX:XX' once Linux is up and running but was wondering if it's possible to make this change persist...
01/30/2015
- JM 10:35 PM PCB Development: RE: MityARM-1808F SATA connection problem
- The SW developer told me the kernel version is 2.6.34
Does that affect the quality of link?
01/23/2015
- SN 03:21 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- Hi mike
your are rigth. I tried it before the
map= (int *)(mmap(0,MAPPED_SIZE,PROT_READ|PROT_WRITE,MAP_SHARED,_fdmem,DDR_RAM_PHYS));
and forgot to correct it back.. Its working now, thanks alot..
01/22/2015
- MW 07:32 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- No you don't need ot use SetSharedMemCfg() or SetPoolCfg() if you are not using the tcDspInbound and tcDspOutbound message passing frameworks.
If you look at the dspapp.cpp file in the MDK, you will see the following parameters: - SN 03:57 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- Hi
do i need to use
int tcDspApp::SetSharedMemCfg(tsSharedMemCfg* pConfig)
or
int tcDspApp::SetPoolCfg(uint32_t anNumBufPools, uint32_t *apBufSizes,
uint32_t *apNumBuf, bool abExactMatch)
to use the Iram at 0... - SN 01:59 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- Hi thanks for the help, I still got some problems with reading on the ARM.
ARM code:
01/20/2015
- JC 09:31 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- You may find this post helpful for transmitting non-string data using dsplink. https://support.criticallink.com/redmine/boards/10/topics/4178?r=4179#message-4179
Note that the tsData::data_ptr requires tcDspApp::ReadMemory() on the AR... - MW 09:18 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- DSP code is OK, though if you have the caches enabled for the regions of SRAM or RAM you may need to add a cache write back call to ensure the data is moved to external memory for the ARM to pick up.
-Mike - SN 09:05 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- Hi thanks for the quick reply. I found some stuff of how to do it on the ARM side, following the example you pointed out. On the DSP is it okay to write to memory as showed above ?
- MW 07:33 AM Software Development: RE: Write to SharedMem from DSP and read it from ARM
- The linux OS uses virtual memory addresses. You can't access RAM by physical address in the normal case.
You need to use /dev/mem and mmap in the memory you want to access (though it will not be cacheable with this technique). See t... - Hi im trying to write to some shared memory from the DSP and read it back from the ARM. Ive expanded the HelloWorldDSP project, so memory is mapped as in that project. I tried on 4 different memory areas.
DSP code:
01/19/2015
- MW 07:08 AM PCB Development: RE: MityARM-1808F SATA connection problem
- What version of the kernel are you using?