2009-02-18 22:48:42 +00:00
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#
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2010-10-09 15:43:06 +00:00
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# Copyright (C) 2010 OpenWrt.org
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2009-02-18 22:48:42 +00:00
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#
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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include $(TOPDIR)/rules.mk
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include $(INCLUDE_DIR)/kernel.mk
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PKG_NAME:=ucmb
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2010-10-09 15:43:06 +00:00
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PKG_RELEASE:=2
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2009-02-18 22:48:42 +00:00
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include $(INCLUDE_DIR)/package.mk
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define KernelPackage/ucmb
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SUBMENU:=Other modules
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2010-10-05 23:56:19 +00:00
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DEPENDS:=@!LINUX_2_4 \
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2009-06-21 12:50:15 +00:00
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@!LINUX_2_6_21 @!LINUX_2_6_22 @!LINUX_2_6_23 @!LINUX_2_6_24 \
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@!LINUX_2_6_25 @!LINUX_2_6_26 @!LINUX_2_6_27 \
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+kmod-spi-gpio +kmod-crc16
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2009-02-18 22:48:42 +00:00
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KCONFIG:=CONFIG_SPI=y \
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CONFIG_SPI_MASTER=y
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2009-04-02 09:41:11 +00:00
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TITLE:=Microcontroller Message Bus
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2009-02-18 22:48:42 +00:00
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FILES:=$(PKG_BUILD_DIR)/ucmb.$(LINUX_KMOD_SUFFIX)
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AUTOLOAD:=$(call AutoLoad,93,ucmb)
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2010-09-30 10:18:02 +00:00
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MAINTAINER:=Michael Buesch <mb@bu3sch.de>
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2009-02-18 22:48:42 +00:00
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endef
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2009-02-19 12:03:32 +00:00
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define KernelPackage/ucmb/description
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The Microcontroller Message Bus is a tiny SPI-GPIO based communication
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channel used to talk to microcontrollers over GPIO pins.
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The lowlevel protocol is CRC16 protected, so one can be pretty sure
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that the data transmitted and received through the /dev/ucmb node is not corrupted.
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So no further checks should be needed at upper protocol layers.
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The device node considers every read/write to be one packet. The maximum packet
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size is either PAGE_SIZE (at least 4kb) or the microcontroller specific packet size
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limit, which is likely to be a lot smaller than PAGE_SIZE.
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2009-04-02 09:41:11 +00:00
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To register an ucmb device, simply create a struct ucmb_platform_data
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and register it via ucmb_device_register() from another kernel module.
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2009-02-19 12:03:32 +00:00
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Example implementations for the microcontroller-side code can be found in
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the utils/ucmb/microcontroller_examples subdirectory of the OpenWRT packages feed.
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endef
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2009-02-18 22:48:42 +00:00
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define Build/Prepare
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$(CP) ./driver/* $(PKG_BUILD_DIR)/
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endef
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define Build/Compile
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$(MAKE) -C "$(LINUX_DIR)" \
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CROSS_COMPILE="$(TARGET_CROSS)" \
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ARCH="$(LINUX_KARCH)" \
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SUBDIRS="$(PKG_BUILD_DIR)" \
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EXTRA_CFLAGS="$(BUILDFLAGS)" \
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modules
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endef
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2010-01-01 23:39:27 +00:00
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define Build/InstallDev
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$(INSTALL_DIR) $(1)/usr/include
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$(CP) \
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$(PKG_BUILD_DIR)/ucmb.h \
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$(1)/usr/include
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endef
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2009-02-18 22:48:42 +00:00
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$(eval $(call KernelPackage,ucmb))
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