David Reynolds wrote:

Janusz,

Any chance of a step by step of how you set up your E3 as a soft phone?

Things are not stable yet, but for those impatient:

1. Ensure you are able to access E3 serial console. In case of problems, try with different serial ports, including different usb_serial adapters. An FTDI based one worked for me, a Prolific one did not. For more info, use http://wiki.earth.li/E3 as your starting point.

2. Ensure you are able to install and run http://the.earth.li/pub/e3/E3_release_v2.tar.gz on your E3. There is a README included.

3. On your linux PC, install OpenEmbedded and bitbake (http://www.openembedded.org). Read OE documentation. Switch to 2009/stable branch (I'm not sure if really necessary).

4. Configure your OE. In local.conf, set: MACHINE = "amsdelta" KERNEL_IMAGETYPE = "uImage" DISTRO = "amsdelta-oe" ANGSTROMLIBC = "uclibc" Try building minimal-image. This should break on u-boot.

5. For better results, you'll have to modify several OE files. The best way is to set up local OE overlay. Get copies of required files/directories from OE tree and modify them.

6. Modify conf/machine/amsdelta.conf: - change PREFERRED_PROVIDER_virtual/kernel to "linux" ("linux-omap" and "linux-omap-pm" worked for me too), - comment out EXTRA_IMAGEDEPENDS, - increase IMAGE_ROOTFS_SIZE_ext2{,.gz} to "16384", - in IMAGE_FSTYPES replace "tar.bz2" with "tar.gz".

7. Wait for linux-2.6.32 or later integrated into OE ;), that should already contain official audio support for ams-delta, or if you really can't wait, create your own recipes/linux/linux-2.6.31[-rcx].bb recipe and include all ams-delta audio related patches published here lately.

8. Run "bitbake -c configure linux". Go to tmp/work/amsdelta-angstrom-linux-uclibcgnueabi/linux-your.package.version/linux-your.kernel.version/, run "ARCH=arm make defconfig_amsdelta", then "ARCH=arm make menuconfig" to finetune your kernel configuration. Don't forget to turn on Drivers -> Sound -> ALSA -> ASoC -> OMAP -> Amsdelta ;). Now you can save your .config as defconfig under recipes/linux/linux-your.kernel.version/ directory for future reuse. Finally, get back to your build/ directory and bitbake minimal-image.

9. Use http://the.earth.li/pub/e3/E3_release_v2.tar.gz to boot your E3 into install mode and reinstall it with newly created images transfered to your usb stick. Use tmp/deploy/uclibc/images/amsdelta/Angstrom-minimalist-image-uclibc-ipk-your.oe.version-amsdelta.rootfs.tar.gz as root.tar.gz and tmp/work/amsdelta-angstrom-linux-uclibcgnueabi/linux-your.package.version/linux-your.kernel.version/arch/arm/boot/uImage as uImage. Keep u-boot.bin and ldr.img unchanged.

10. Verify if it works. To test audio, you can install several packages found in tmp/deploy/uclibc/ipk/armv4t/, like alsa-utils-aplay and alsa-utils-alsamixer or alsa-utils-amixer. You can also try to build and install madplay in order to play your favourite MP3s.

After you are done: - feel free to use this text as a base for E3 Wiki update, - prepare and submit a patch against OE ;).

More to come.

Thanks, Janusz