New answers tagged embedded
Insert your SD card containing u-boot, u-bootfornadflasf, u-boot.bin, etc. with all the images. After doing this start the Linux kernel on the Devkit8500. Interrupt the u-boot and run the command: Updatesys Make sure that you have the correct images on your SD card because this operation is irreversible.
If it's possible, where in memory I should load the file and how do I load it? On Linux small devices you have defined memory regions: $ cat /proc/mtd dev: size erasesize name mtd0: 00020000 00010000 "u-boot" mtd1: 00102b20 00010000 "kernel" mtd2: 006cd4e0 00010000 "rootfs" mtd3: 00510000 00010000 "rootfs_data" mtd4: 00010000 00010000 "art" ...
Routers and other small linux devices do not use hard drives. They use different types of RAM: DDR RAM as working storage ROM for system image (Kernel + OS) Non Volatile RAM for Settings (/dev/nvram) In case of an crash they boot again and reinitialize the OS, so nothing get's lost.
I believe you can use Wireshark to determine why these packets are being retransmitted. Excerpted from this thread in the Wireshark forum, titled: Wireshark-users: Re: [Wireshark-users] tcp errors detection. excerpt #1 On Sun, Apr 18, 2010 at 4:17 PM, Victor lyamtsev wrote: Hi, how can i locate retransmission error for TCP sequence in ...
What you are asking for is called a proxy http server. The software receives http requests and passes them on or rejects them (logging too) It needn't sit on your embeded device, however your device would need to be configured to access the proxy instead of going directly to the internet. apache nginx are two examples of web servers that can act as proxy ...
I was wrong. The command was working correctly. I had used a wrong version of the kernel. Thanks
man hdparm: -B Get/set Advanced Power Management feature, if the drive supports it. A low value means aggressive power management and a high value means better performance. Possible settings range from values 1 through 127 (which permit spin-down), and values 128 through 254 (which do not permit spin-down). The highest degree of power ...
Boot your system using the known working kernel and initramfs, and then do an lsmod to see what modules are loaded. I would bet one of those is something it needs that isn't built into your kernel. I know you can pass command line options to modules when insmoding - maybe there's some command line option that the initramfs passes that you're not passing ...
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