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projects:gpio-bb [2022/08/01 14:02] – darronprojects:gpio-bb [2024/05/16 10:54] (current) – [GPIO bit-bang driver for Linux] darron
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 GPIO bit-bang is well suited to PICMicro ICSP but not exclusively. GPIO bit-bang is well suited to PICMicro ICSP but not exclusively.
 +
 +WARNING: The underlying kernel API this module uses may have been removed from your running kernel.
 +=== Build ===
 +
 +This module is built out of kernel and depends on the header files and tools found locally or may be cross compiled.
 +
 +For cross compilation, an example Makefile named `cross-compile.mk' is provided which should work for Raspberry PI OS as explained [[:tools:raspbian#kernel|here]].
 +
 +If the linux source directory was cross compiled and then copied to the target system to build the module, `scripts.sh' is provided to rebuild certain kernel header scripts locally. This is needed because some scripts are actually binary files on the foreign architecture.
 +
 +
  
 === Raspberry Pi OS=== === Raspberry Pi OS===
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 </code> </code>
  
 +=== Armbian ===
 +
 +==BPI==
 +
 +<code>
 +apt install linux-headers-current-sunxi
 +hg clone http://hg.kewl.org/pub/gpio-bb
 +cd gpio-bb
 +make
 +make install
 +</code>
  
 === Configuration === === Configuration ===
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 </code> </code>
  
-=== OpenWRT === +=== Obsolete documentation === 
-[[projects:gpio-bb:openwrt|GPIO bit-bang driver for OpenWRT]] +[[projects:gpio-bb:armbian|Armbian]] 
- +[[projects:gpio-bb:bananian|Bananian]] 
-=== Raspbian for Raspberry Pi (obsolete) === +[[projects:gpio-bb:openwrt|OpenWRT]] 
-[[projects:gpio-bb:raspbian|GPIO bit-bang driver for Raspbian]]+[[projects:gpio-bb:raspbian|Raspbian]]
  
 === Troubleshooting === === Troubleshooting ===
  
-gpio-bb uses the kernel API to access pins, this API demands +gpio-bb uses the kernel API to access pins, this API demands exclusive access to a pin per process. This means you cannot use gpio-bb and sysfs export simultaneously for a single pin.
-exclusive access to a pin per process. This means you cannot use +
-gpio-bb and sysfs export simultaneously for a single pin.+
  
 === Resources === === Resources ===
  
 [[https://www.pedalpc.com/blog/program-pic-raspberry-pi/#gpio-bb|Using gpio-bb]] [[https://www.pedalpc.com/blog/program-pic-raspberry-pi/#gpio-bb|Using gpio-bb]]