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--- mission:resources:picoprint:software [2014-01-08 09:44] – created chrono
+++ mission:resources:picoprint:software [2015-01-26 22:15] (current) – [GPIOs] chrono
@@ Line 6: / Line 6: @@
 <code>
-emerge -av crossdev
+$ emerge -av crossdev
 </code>
-Create a cubieboard2 specific cross-development environment:
+Create a stable armv7a-hardfloat-linux-gnueabi tool chain for the Cubieboard2:
 <code>
-crossdev -S -t armv7a-hardfloat-linux-gnueabi
+$ crossdev -S -t armv7a-hardfloat-linux-gnueabi
 </code>
@@ Line 18: / Line 18: @@
 <code>
-mkdir gentoo-cb2
+$ mkdir gentoo-cb2
-cd gentoo-cb2
+$ cd gentoo-cb2
-git clone https://github.com/linux-sunxi/u-boot-sunxi.git
+$ git clone https://github.com/linux-sunxi/u-boot-sunxi.git
+$ cd u-boot-sunxi
 </code>
+Start clean and configure Cubieboard2 default u-boot parameters
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- make distclean
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- make Cubieboard2_config
+</code>
+should return
+<code>
+Configuring for Cubieboard2 - Board: sun7i, Options: CUBIEBOARD2,SPL,SUNXI_GMAC,STATUSLED=244,STATUSLED1=245,FAST_MBUS
+</code>
+Build u-boot
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- make -j4
+</code>
+should return something like
+<code>
+tools/mkimage -A arm -T firmware -C none \
+        -O u-boot -a 0x4a000000 \
+        -e 0 \
+        -n  "U-Boot 2014.01-rc1-09153-gc75ea90 for sunxi board" \
+        -d u-boot.bin u-boot.img
+Image Name:   U-Boot 2014.01-rc1-09153-gc75ea9
+Created:      Wed Jan  8 10:47:48 2014
+Image Type:   ARM U-Boot Firmware (uncompressed)
+Data Size:    227820 Bytes = 222.48 kB = 0.22 MB
+Load Address: 4a000000
+Entry Point:  00000000
+tr "\000" "\377" < /dev/zero | dd ibs=1 count=32768 \
+                of=spl/sunxi-spl-pad.bin 2>/dev/null
+</code>
+and produce the following files we will need:
+<code>
+-rw-r--r-- 227884 Jan  8 10:47 ./gentoo-cb2/u-boot-sunxi/u-boot.img
+-rwxr-xr-x 17644  Jan  8 10:47 ./gentoo-cb2/u-boot-sunxi/spl/u-boot-spl.bin
+</code>
+==== Install and compile kernel ====
+=== Get the sources ===
+<code>
+$ cd ..
+$ git clone https://github.com/linux-sunxi/linux-sunxi.git
+$ cd linux-sunxi
+$ git checkout sunxi-3.4
+</code>
+=== Prepare the kernel ===
+Use default config to get something to start with
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- ARCH=arm make sun7i_defconfig
+</code>
+Tweak your kernel according to your wishes
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- ARCH=arm make menuconfig
+</code>
+<WRAP round tip>
+**The kernel seems to fail to compile when the following settings are enabled:**
+  * Networking support -> [*] RF Switch subsystem support
+    //Solution: Disable RF Switch subsystem support (not needed on CB2 anyways).//
+  * Power Management options -> [*] Run-time PM core functionality
+    //Solution: Disable Run-time PM core functionality or apply the following patch.//
+</WRAP>
+<sxh c; toolbar:false>
+--- arch/arm/mach-sun7i/pm/standby/mem_printk.c 2014-01-08 12:42:26.641644236 +0100
++++ /tmp/mem_printk.c   2014-01-08 12:42:18.706835502 +0100
+@@ -165,7 +165,7 @@
+        int  negative = 0;                //defualt is positive value
+        int  i;
+        int  j;
+-       char digit_string[] = "0123456789ABCDEF";
++       char * digit_string = "0123456789ABCDEF";
+        if(value == 0)
+        {
+@@ -211,7 +211,7 @@
+        char stack[16];
+        int  i;
+        int  j;
+-       char digit_string[] = "0123456789ABCDEF";
++       char * digit_string = "0123456789ABCDEF";
+        if(value == 0)
+        {
+@@ -366,7 +366,7 @@
+ {
+        //fill with space ' ' when align request,
+        //the max align length is 16 byte.
+-       char fill_ch[] = "                ";
++       char * fill_ch = "                ";
+        if (len < align)
+        {
+                //fill at right
+</sxh>
+Compile kernel
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- ARCH=arm make -j4 uImage
+</code>
+<code>
+Image Name:   Linux-3.4.75-00001-g9cfbbed-dirt
+Created:      Wed Jan  8 12:55:16 2014
+Image Type:   ARM Linux Kernel Image (uncompressed)
+Data Size:    4385184 Bytes = 4282.41 kB = 4.18 MB
+Load Address: 40008000
+Entry Point:  40008000
+  Image arch/arm/boot/uImage is ready
+</code>
+Compile modules
+<code>
+$ CROSS_COMPILE=armv7a-hardfloat-linux-gnueabi- ARCH=arm make -j4 modules
+</code>
+==== Install and compile sunxi-tools ====
+<code>
+$ cd ..
+$ git clone https://github.com/linux-sunxi/sunxi-tools.git
+$ cd sunxi-tools
+$ make bin2fex fex2bin
+$ git clone https://github.com/linux-sunxi/sunxi-boards.git
+</code>
+<code>
+emerge -pv nginx pycurl mjpg-streamer
+</code>
+===== GPIOs =====
+http://docs.cubieboard.org/tutorials/common/using_python_program_control_gpios
+===== nginx config =====
+<code>
+worker_processes  1;
+events
+{
+    worker_connections  1024;
+}
+http
+{
+    include            mime.types;
+    default_type       application/octet-stream;
+    sendfile           on;
+    keepalive_timeout  65;
+    map                 $http_upgrade $connection_upgrade
+    {
+        default         upgrade;
+        ''              close;
+    }
+    upstream            "octoprint"
+    {
+        server          127.0.0.1:5000;
+    }
+    upstream            "framecam"
+    {
+        server          127.0.0.1:8080;
+    }
+    server
+    {
+        listen       80;
+        server_name  feliks;
+        client_max_body_size 50M;
+        location /framecam/
+        {
+            proxy_pass http://framecam/;
+            proxy_buffering off;
+        }
+        location /sockjs
+        {
+            proxy_pass http://octoprint;   # NO trailing slash
+            proxy_buffering off;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection $connection_upgrade;
+        }
+        location /
+        {
+            set $pp_d http://127.0.0.1:5000;
+            if ( $args = 'action=stream' ) {
+                set $pp_d http://127.0.0.1:8080/$is_args$args;
+            }
+            if ( $args = 'action=snapshot' ) {
+                set $pp_d http://127.0.0.1:8080/$is_args$args;
+            }
+            proxy_pass $pp_d;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection "upgrade";
+            proxy_set_header Host $host:$server_port;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_set_header X-Forwarded-For $remote_addr;
+            proxy_set_header X-Forwarded-Port $server_port;
+            proxy_set_header X-Request-Start $msec;
+        }
+        # redirect server error pages to the static page /50x.html
+        error_page   500 502 503 504  /50x.html;
+        location = /50x.html
+        {
+            root   html;
+        }
+    }
+}
+</code>
+{{tag>lab 3d-printer picoprint robot cubieboard gentoo}}
+{{keywords>Apollo-NG hackerspace hacker space development makerspace fablab lab community open-resource open resource mobile hackbus 3d-printer picoprint robot cubieboard gentoo}}
+~~DISCUSSION~~

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