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chumby [2010/03/22 16:44]
ladyada
chumby [2016/01/28 18:05]
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- ​====== Stuff you'll need ====== 
- 
-  - Chumby One - faster than the classic chumby 
-  - Other computer you can use as a terminal 
- 
-What I did! 
- 
-==== Chumbify==== 
-Bunnie visited and gave us 2 chumby ones. one had no working wifi. the other one seemed to be OK. Using the OK one 
- 
-Activated it. works OK 
- 
-==== Turn on SSHD ==== 
- ​[[http://​wiki.chumby.com/​mediawiki/​index.php/​Chumby_tricks#​Hidden_screen_in_Control_Panel|Turn on sshd]] 
- 
-ssh in as root, and turn off the control panel (to free up some memory and cycles) 
- 
-<​file>​ 
-stop_control_panel 
-</​file>​ 
- 
-Then make the sshd '​permanent'​ 
- 
-<​file>​ 
-touch /​psp/​start_sshd 
-</​file>​ 
- 
-==== Install Dev ==== 
- 
-Download & install silvermoon dev environment. Chmod +x the shell script and run it. This will take a bit 
- 
-==== Tried to install/​port latest SDL ==== 
- 
-Download the latest SDL tarball (we used 1.2.14) 
- 
-run: 
-<​file>​ 
-./​configure ​ --enable-video-fbcon --disable-video-x11 --disable-dga --disable-esd --disable-oss --disable-pulseaudio --disable-joystick --disable-cdrom --without-x 
-make 
-mount -oremount,​rw / 
-make install 
-</​file>​ 
- 
-Ran the test programs. Nothing happened. Kinda disappointed. So now going to backtrack 
- 
-==== Try ChumbyQuake SDL port ==== 
- 
- 
-Download chumby_quake to /​mnt/​storage and uncompress. ​ 
- 
-Make my own '​bitops.h'​ file from kludged together stuff 
- 
-Go into the SDL directory and run 
-<​file>​ 
-./configure --enable-alsa --enable-static --disable-oss --disable-esd --disable-pulseaudio --disable-video-x11 --enable-video-fbcon --disable-alsa-shared 
-make 
-make install 
-</​file>​ 
- 
-run tests. Nothing happens on the display but it -says- it found stuff. Disappointed. backtrack some more 
- 
-==== Try chumbyquake ==== 
- 
-Download chumby quake bins and stick on USB key. plug it in and run from command line. Had to use 
-<​file>​export SDL_NOMOUSE=1 </​file>​ to stop mouse complaints 
-Audio is fine, pressing the top button makes the '​gun'​ fire. But no video. Disappointed. backtrack some more 
- 
-==== WTF is the frame buffer ==== 
- 
-bunnie suggests maybe the framebuffers are swapped (seems there are two) so tried 
-<​file>​ 
-dd if=/​dev/​zero of=/dev/fb0 
-</​file>​ 
-This wipes the screen (yay) so at least we know that the framebuffer is writable and is at /dev/fb0 
- 
-Now try to run quake again. Notice that the top line is the only thing that displays (easier to see this if you wipe the screen) 
- 
-Look at old SDL tests - graywin, for example, '​works'​ but only displays top line. So its not the quake code and is something either in the library/​driver/​kernel 
- 
-==== Why is FB broken? ==== 
- 
-OK so looking around some more, it looks like [[http://​forum.chumby.com/​viewtopic.php?​id=4603|this has come up before]] - and the answer is the kernel is buggy (?) 
- 
-So try to install new kernel with composite vid support (hey i might need it eventually) by [[http://​forum.chumby.com/​viewtopic.php?​id=4283|running the script on the forums]] 
- 
-Realise a little too late that this is going to cause the chumby to '​brick'​ due to the wifi driver having incompatibilities. eit. 
- 
-==== Unbrick chumby ==== 
- 
-Follow the [[http://​www.chumby.com/​pages/​latest_software|USB update instructions]] to get the kernel back. Hey its a good thing to know anyways! 
- 
-==== Really fix the FB ==== 
- 
-So finally I use my reading comprehension to realize that really whats broken is just needing to poke the chip to tell it which FB to use. [[http://​forum.chumby.com/​viewtopic.php?​id=4283|Following this helpful post]] I run 
- 
-<​file>​ 
-wget http://​files.chumby.com/​hacks/​switch_output 
-chmod +x switch_output 
- 
-stop_control_panel 
-./​switch_output -l 
-switch_fb.sh 0 
-</​file>​ 
- 
-==== Try chumbyquake again ==== 
-It runs! But it looks like some colorspace swappage is going on. I'll fix it later 
- 
-Also tried the old SDL tests and they'​re working good now. yay. 
- 
-==== Port SIemu ==== 
- 
-The '​easiest'​ emulator to port by far is SIemu. Its written in straight-up C, well documented and uses SDL as an underpinning. 
- 
-  * Had problem with audio so commented out all the Audio procedures. ​ 
-  * Complained about screen size so changes graphics.h to use 320x240 screen 
-  * Runs! 
- 
-OK much success. Now to fix it so audio works. SDL doesnt seem to know about audio device - perhaps we need to install ALSA lib first? 
- 
-==== download stella & ./configure ==== 
-Grab the source, try to build 
- 
-<​file>​chumby:/​mnt/​storage/​stella/​stella-3.0#​ ./configure 
-Running Stella configure... 
-./​configure:​ line 341: printf: not found 
-g++ 
-./​configure:​ line 363: printf: not found 
-4.3.3, ok 
-./​configure:​ line 493: printf: not found 
-linux-gnu 
-./​configure:​ line 504: printf: not found 
-none found! 
-</​file>​ 
- 
-OK, grab an [[http://​forum.chumby.com/​viewtopic.php?​id=4474|updated busybox]] and install it 
- 
  
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