User:Batydm

I am currently a Graduate student at Rose-Hulman Institute of Technology pursuing my MECE (Masters of Electrical and Computer Enginnering) degree. My undergraduate degree was in Computer Engineering, also from Rose-Hulman. I am the Public Relations officer of the Rose-Hulman Linux Users' Group. I am working on another project using the BeagleBoard to control a walking four legged robot.

Contributions

Most of my work is with the BeagleBoard hardware. I helped with pages on PWM on the BeagleBoard and I2C on the BeagleBoard. I created the page on Interfacing with the BeagleBoard hardware. This page contains a variety of information on how to make a board to interface with the BeagleBoard, including dealing with power and level shifting.

Listings From Embedded Linux Primer

Number	Page	Caption	Listing	Notes
2-1	2-6	Initial Bootloader Serial Output	Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24) Reading boot sector Loading u-boot.bin from mmc U-Boot 2009.11-rc1 (Jan 08 2010 - 21:19:52) OMAP3530-GP ES3.0, CPU-OPP2 L3-165MHz OMAP3 Beagle board + LPDDR/NAND I2C: ready DRAM: 256 MB NAND: 256 MiB In: serial Out: serial Err: serial Board revision C1/C2/C3 Die ID #5160000300000000040323091101f01a Hit any key to stop autoboot: 0 OMAP3 beagleboard.org #	This is from a Revision C3 Beagle.
2-2	2-7	Loading the Linux Kernel	3001004 bytes read Booting from mmc ... ## Booting kernel from Legacy Image at 82000000 ... Image Name: Angstrom/2.6.29/beagleboard Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3000940 Bytes = 2.9 MB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux.... done, booting the kernel.
2-3	2-9	Linux Final Boot Messages	Starting portmap daemon: portmap. Unknown HZ value! (75) Assume 100. net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.all.rp_filter = 1 hwclock: can't open '/dev/misc/rtc': No such file or directory Sat Mar 13 23:56:00 GMT 2010 hwclock: can't open '/dev/misc/rtc': No such file or directory INIT: Entering runlevel: 5 Starting system message bus: dbus. Starting Hardware abstraction layer hald Configuring leds: beagleboard::usr0: heartbeat beagleboard::usr1: mmc0 Starting Dropbear SSH server: modprobe: FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/net/ipv6/ipv6.ko': No such file or directory modprobe: FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/net/ipv6/ipv6.ko': No such file or directory dropbear. Starting advanced power management daemon: No APM support in kernel (failed.) Starting Samba: smbd nmbd. Starting syslogd/klogd: done Starting internet superserver: xinetd. * Starting Avahi mDNS/DNS-SD Daemon: avahi-daemon [ ok ] Starting Network connection manager daemon: NetworkManager. Loading kernel modules for gstreamer-ti... FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/dsp/cmemk.ko': No such file or directory FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/dsp/dsplinkk.ko': No such file or directory WARNING: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/dsp/dsplinkk.ko': No such file or directory FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/dsp/lpm_omap3530.ko': No such file or directory FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/dsp/sdmak.ko': No such file or directory done Loading [g_cdc] FATAL: Could not open '/lib/modules/2.6.29-omap1/kernel/drivers/usb/gadget/g_cdc.ko': No such file or directory Starting web server: apache2. Starting GNOME Display Manager gdm Starting GPE display manager: gpe-dm [ 1486.575927] OMAPFB: Closing fb with plane index 0 .-------. | | .-. | | |-----.-----.-----.| | .----..-----.-----. | | | __ | ---'| '--.| .-'| | | | | | | | |--- || --'| | | ' | | | | '---'---'--'--'--. |-----''----''--' '-----'-'-'-' -' | '---' The Angstrom Distribution beagleboar ttyS2 Angstrom 2009.X-test-20100104 beagleboar ttyS2
2-4	2-21	Hello World, Embedded Style	#include <stdio.h> int bss_var; /* Uninitialized global variable */ int data_var = 1; /* Initialized global variable */ int main(int argc, char **argv) { void *stack_var; /* Local variable on the stack */ stack_var = (void *)main; /* Don't let the compiler */ /* optimize it out */ printf("Hello, World! Main is executing at %p\n", stack_var); printf("This address (%p) is in our stack frame\n", &stack_var); /* bss section contains uninitialized data */ printf("This address (%p) is in our bss section\n", &bss_var); /* data section contains initializated data */ printf("This address (%p) is in our data section\n", &data_var); return 0; }
2-5	2-22	Hello Output for Host Computer	Hello, World! Main is executing at 0x400524 This address (0x7fff6c261d58) is in our stack frame This address (0x601038) is in our bss section This address (0x601020) is in our data section	Intel Atom, Ubuntu 9.10 64-bit
2-5	2-22	Hello Output for Beagle	Hello, World! Main is executing at 0x8380 This address (0xbedddc44) is in our stack frame This address (0x10670) is in our bss section This address (0x10668) is in our data section	Beagleboard rev C3, Angstrom remote compiled
			U-Boot 2009.06-rc2 (Apr 13 2010 - 17:33:55) OMAP3530-GP ES3.0, CPU-OPP2 L3-165MHz OMAP3 Beagle board + LPDDR/NAND DRAM: 256 MB NAND: 256 MiB In: serial Out: serial Err: serial Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24) Reading boot sector Loading u-boot.bin from mmc U-Boot 2009.06-rc2 (Apr 13 2010 - 17:33:55) OMAP3530-GP ES3.0, CPU-OPP2 L3-165MHz OMAP3 Beagle board + LPDDR/NAND DRAM: 256 MB NAND: 256 MiB In: serial Out: serial Err: serial Board revision C Die ID #5160000300000000040323091101f01a Hit any key to stop autoboot: 0 DB, TM and MJ -- OMAP3 beagleboard.org #
4-3	4-15		total 423 drwxr-xr-x 3 batydm students 776 2010-04-28 00:05 . drwxr-xr-x 87 batydm students 2696 2010-04-28 00:05 .. -rw-r--r-- 1 batydm students 11124 2010-04-28 00:05 clock.c -rw-r--r-- 1 batydm students 8805 2010-04-28 00:05 common.c -rw-r--r-- 1 batydm students 4033 2010-04-28 00:05 cpu-omap.c -rw-r--r-- 1 batydm students 2192 2010-04-28 00:05 debug-devices.c -rw-r--r-- 1 batydm students 7170 2010-04-28 00:05 debug-leds.c -rw-r--r-- 1 batydm students 10914 2010-04-28 00:05 devices.c -rw-r--r-- 1 batydm students 52795 2010-04-28 00:05 dma.c -rw-r--r-- 1 batydm students 22660 2010-04-28 00:05 dmtimer.c -rw-r--r-- 1 batydm students 10055 2010-04-28 00:05 fb.c -rw-r--r-- 1 batydm students 61383 2010-04-28 00:05 gpio.c -rw-r--r-- 1 batydm students 5568 2010-04-28 00:05 i2c.c drwxr-xr-x 3 batydm students 72 2010-04-28 00:05 include -rw-r--r-- 1 batydm students 6265 2010-04-28 00:05 io.c -rw-r--r-- 1 batydm students 20789 2010-04-28 00:05 iommu.c -rw-r--r-- 1 batydm students 9141 2010-04-28 00:05 iommu-debug.c -rw-r--r-- 1 batydm students 2745 2010-04-28 00:05 iopgtable.h -rw-r--r-- 1 batydm students 19344 2010-04-28 00:05 iovmm.c -rw-r--r-- 1 batydm students 4819 2010-04-28 00:05 Kconfig -rw-r--r-- 1 batydm students 8546 2010-04-28 00:05 mailbox.c -rw-r--r-- 1 batydm students 882 2010-04-28 00:05 Makefile -rw-r--r-- 1 batydm students 43754 2010-04-28 00:05 mcbsp.c -rw-r--r-- 1 batydm students 2263 2010-04-28 00:05 mux.c -rw-r--r-- 1 batydm students 2739 2010-04-28 00:05 ocpi.c -rw-r--r-- 1 batydm students 21421 2010-04-28 00:05 omap_device.c -rw-r--r-- 1 batydm students 7069 2010-04-28 00:05 omap-pm-noop.c -rw-r--r-- 1 batydm students 12878 2010-04-28 00:05 sram.c -rw-r--r-- 1 batydm students 18770 2010-04-28 00:05 usb.c
4-6		Makefile targets	Cleaning targets: clean - Remove most generated files but keep the config and enough build support to build external modules mrproper - Remove all generated files + config + various backup files distclean - mrproper + remove editor backup and patch files Configuration targets: config - Update current config utilising a line-oriented program menuconfig - Update current config utilising a menu based program xconfig - Update current config utilising a QT based front-end gconfig - Update current config utilising a GTK based front-end oldconfig - Update current config utilising a provided .config as base localmodconfig - Update current config disabling modules not loaded localyesconfig - Update current config converting local mods to core silentoldconfig - Same as oldconfig, but quietly, additionally update deps randconfig - New config with random answer to all options defconfig - New config with default answer to all options allmodconfig - New config selecting modules when possible allyesconfig - New config where all options are accepted with yes allnoconfig - New config where all options are answered with no Other generic targets: all - Build all targets marked with [*] * vmlinux - Build the bare kernel * modules - Build all modules modules_install - Install all modules to INSTALL_MOD_PATH (default: /) firmware_install- Install all firmware to INSTALL_FW_PATH (default: $(INSTALL_MOD_PATH)/lib/firmware) dir/ - Build all files in dir and below dir/file.[ois] - Build specified target only dir/file.ko - Build module including final link modules_prepare - Set up for building external modules tags/TAGS - Generate tags file for editors cscope - Generate cscope index kernelrelease - Output the release version string kernelversion - Output the version stored in Makefile headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH (default: /home/users/batydm/omap/linux-omap-2.6/usr) Static analysers checkstack - Generate a list of stack hogs namespacecheck - Name space analysis on compiled kernel versioncheck - Sanity check on version.h usage includecheck - Check for duplicate included header files export_report - List the usages of all exported symbols headers_check - Sanity check on exported headers headerdep - Detect inclusion cycles in headers Kernel packaging: rpm-pkg - Build both source and binary RPM kernel packages binrpm-pkg - Build only the binary kernel package deb-pkg - Build the kernel as an deb package tar-pkg - Build the kernel as an uncompressed tarball targz-pkg - Build the kernel as a gzip compressed tarball tarbz2-pkg - Build the kernel as a bzip2 compressed tarball Documentation targets: Linux kernel internal documentation in different formats: htmldocs - HTML pdfdocs - PDF psdocs - Postscript xmldocs - XML DocBook mandocs - man pages installmandocs - install man pages generated by mandocs cleandocs - clean all generated DocBook files Architecture specific targets (arm): * zImage - Compressed kernel image (arch/arm/boot/zImage) Image - Uncompressed kernel image (arch/arm/boot/Image) * xipImage - XIP kernel image, if configured (arch/arm/boot/xipImage) uImage - U-Boot wrapped zImage bootpImage - Combined zImage and initial RAM disk (supply initrd image via make variable INITRD=<path>) install - Install uncompressed kernel zinstall - Install compressed kernel Install using (your) ~/bin/installkernel or (distribution) /sbin/installkernel or install to $(INSTALL_PATH) and run lilo acs5k_defconfig - Build for acs5k acs5k_tiny_defconfig - Build for acs5k_tiny afeb9260_defconfig - Build for afeb9260 am200epdkit_defconfig - Build for am200epdkit am3517_evm_defconfig - Build for am3517_evm ams_delta_defconfig - Build for ams_delta ap4evb_defconfig - Build for ap4evb assabet_defconfig - Build for assabet at572d940hfek_defconfig - Build for at572d940hfek at91cap9adk_defconfig - Build for at91cap9adk at91rm9200dk_defconfig - Build for at91rm9200dk at91rm9200ek_defconfig - Build for at91rm9200ek at91sam9260ek_defconfig - Build for at91sam9260ek at91sam9261ek_defconfig - Build for at91sam9261ek at91sam9263ek_defconfig - Build for at91sam9263ek at91sam9g20ek_defconfig - Build for at91sam9g20ek at91sam9rlek_defconfig - Build for at91sam9rlek ateb9200_defconfig - Build for ateb9200 badge4_defconfig - Build for badge4 bcmring_defconfig - Build for bcmring cam60_defconfig - Build for cam60 carmeva_defconfig - Build for carmeva cerfcube_defconfig - Build for cerfcube cm_t35_defconfig - Build for cm_t35 cm_x2xx_defconfig - Build for cm_x2xx cm_x300_defconfig - Build for cm_x300 colibri_pxa270_defconfig - Build for colibri_pxa270 colibri_pxa300_defconfig - Build for colibri_pxa300 collie_defconfig - Build for collie corgi_defconfig - Build for corgi cpu9260_defconfig - Build for cpu9260 cpu9g20_defconfig - Build for cpu9g20 cpuat91_defconfig - Build for cpuat91 csb337_defconfig - Build for csb337 csb637_defconfig - Build for csb637 da8xx_omapl_defconfig - Build for da8xx_omapl davinci_all_defconfig - Build for davinci_all devkit8000_defconfig - Build for devkit8000 dove_defconfig - Build for dove ebsa110_defconfig - Build for ebsa110 ecbat91_defconfig - Build for ecbat91 edb7211_defconfig - Build for edb7211 em_x270_defconfig - Build for em_x270 ep93xx_defconfig - Build for ep93xx eseries_pxa_defconfig - Build for eseries_pxa ezx_defconfig - Build for ezx footbridge_defconfig - Build for footbridge fortunet_defconfig - Build for fortunet g3evm_defconfig - Build for g3evm g4evm_defconfig - Build for g4evm h3600_defconfig - Build for h3600 h5000_defconfig - Build for h5000 h7201_defconfig - Build for h7201 h7202_defconfig - Build for h7202 hackkit_defconfig - Build for hackkit htcherald_defconfig - Build for htcherald igep0020_defconfig - Build for igep0020 imote2_defconfig - Build for imote2 integrator_defconfig - Build for integrator iop13xx_defconfig - Build for iop13xx iop32x_defconfig - Build for iop32x iop33x_defconfig - Build for iop33x ixp2000_defconfig - Build for ixp2000 ixp23xx_defconfig - Build for ixp23xx ixp4xx_defconfig - Build for ixp4xx jornada720_defconfig - Build for jornada720 kafa_defconfig - Build for kafa kb9202_defconfig - Build for kb9202 kirkwood_defconfig - Build for kirkwood ks8695_defconfig - Build for ks8695 lart_defconfig - Build for lart loki_defconfig - Build for loki lpd270_defconfig - Build for lpd270 lpd7a400_defconfig - Build for lpd7a400 lpd7a404_defconfig - Build for lpd7a404 lubbock_defconfig - Build for lubbock lusl7200_defconfig - Build for lusl7200 magician_defconfig - Build for magician mainstone_defconfig - Build for mainstone mini2440_defconfig - Build for mini2440 mmp2_defconfig - Build for mmp2 msm_defconfig - Build for msm mv78xx0_defconfig - Build for mv78xx0 mx1_defconfig - Build for mx1 mx21_defconfig - Build for mx21 mx27_defconfig - Build for mx27 mx31pdk_defconfig - Build for mx31pdk mx3_defconfig - Build for mx3 mx51_defconfig - Build for mx51 n770_defconfig - Build for n770 n8x0_defconfig - Build for n8x0 neocore926_defconfig - Build for neocore926 neponset_defconfig - Build for neponset netwinder_defconfig - Build for netwinder netx_defconfig - Build for netx nhk8815_defconfig - Build for nhk8815 ns9xxx_defconfig - Build for ns9xxx nuc910_defconfig - Build for nuc910 nuc950_defconfig - Build for nuc950 nuc960_defconfig - Build for nuc960 omap_2430sdp_defconfig - Build for omap_2430sdp omap_3430sdp_defconfig - Build for omap_3430sdp omap_3630sdp_defconfig - Build for omap_3630sdp omap3_beagle_defconfig - Build for omap3_beagle omap3_defconfig - Build for omap3 omap3_evm_defconfig - Build for omap3_evm omap3_pandora_defconfig - Build for omap3_pandora omap3_touchbook_defconfig - Build for omap3_touchbook omap_4430sdp_defconfig - Build for omap_4430sdp omap_apollon_2420_defconfig - Build for omap_apollon_2420 omap_generic_1510_defconfig - Build for omap_generic_1510 omap_generic_1610_defconfig - Build for omap_generic_1610 omap_generic_1710_defconfig - Build for omap_generic_1710 omap_generic_2420_defconfig - Build for omap_generic_2420 omap_h2_1610_defconfig - Build for omap_h2_1610 omap_h4_2420_defconfig - Build for omap_h4_2420 omap_innovator_1510_defconfig - Build for omap_innovator_1510 omap_innovator_1610_defconfig - Build for omap_innovator_1610 omap_ldp_defconfig - Build for omap_ldp omap_osk_5912_defconfig - Build for omap_osk_5912 omap_perseus2_730_defconfig - Build for omap_perseus2_730 omap_zoom2_defconfig - Build for omap_zoom2 omap_zoom3_defconfig - Build for omap_zoom3 onearm_defconfig - Build for onearm orion5x_defconfig - Build for orion5x overo_defconfig - Build for overo palmte_defconfig - Build for palmte palmtt_defconfig - Build for palmtt palmz71_defconfig - Build for palmz71 palmz72_defconfig - Build for palmz72 pcm027_defconfig - Build for pcm027 picotux200_defconfig - Build for picotux200 pleb_defconfig - Build for pleb pnx4008_defconfig - Build for pnx4008 pxa168_defconfig - Build for pxa168 pxa255-idp_defconfig - Build for pxa255-idp pxa3xx_defconfig - Build for pxa3xx pxa910_defconfig - Build for pxa910 qil-a9260_defconfig - Build for qil-a9260 raumfeld_defconfig - Build for raumfeld realview_defconfig - Build for realview realview-smp_defconfig - Build for realview-smp rpc_defconfig - Build for rpc rx51_defconfig - Build for rx51 s3c2410_defconfig - Build for s3c2410 s3c6400_defconfig - Build for s3c6400 s5p6440_defconfig - Build for s5p6440 s5p6442_defconfig - Build for s5p6442 s5pc100_defconfig - Build for s5pc100 s5pc110_defconfig - Build for s5pc110 s5pv210_defconfig - Build for s5pv210 sam9_l9260_defconfig - Build for sam9_l9260 shannon_defconfig - Build for shannon shark_defconfig - Build for shark simpad_defconfig - Build for simpad spitz_defconfig - Build for spitz stmp378x_defconfig - Build for stmp378x stmp37xx_defconfig - Build for stmp37xx sx1_defconfig - Build for sx1 tct_hammer_defconfig - Build for tct_hammer trizeps4_defconfig - Build for trizeps4 u300_defconfig - Build for u300 u8500_defconfig - Build for u8500 usb-a9260_defconfig - Build for usb-a9260 usb-a9263_defconfig - Build for usb-a9263 versatile_defconfig - Build for versatile viper_defconfig - Build for viper xcep_defconfig - Build for xcep yl9200_defconfig - Build for yl9200 zeus_defconfig - Build for zeus make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build make V=2 [targets] 2 => give reason for rebuild of target make O=dir [targets] Locate all output files in "dir", including .config make C=1 [targets] Check all c source with $CHECK (sparse by default) make C=2 [targets] Force check of all c source with $CHECK Execute "make" or "make all" to build all targets marked with [*] For further info see the ./README file
4-8		Bit from arch/arm/Kconfig	# # For a description of the syntax of this configuration file, # see Documentation/kbuild/kconfig-language.txt. # mainmenu "Linux Kernel Configuration" config ARM bool default y select HAVE_AOUT select HAVE_IDE select RTC_LIB select SYS_SUPPORTS_APM_EMULATION select GENERIC_ATOMIC64 if (!CPU_32v6K) select HAVE_OPROFILE select HAVE_ARCH_KGDB select HAVE_KPROBES if (!XIP_KERNEL) select HAVE_KRETPROBES if (HAVE_KPROBES) select HAVE_FUNCTION_TRACER if (!XIP_KERNEL) select HAVE_GENERIC_DMA_COHERENT select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZO select HAVE_PERF_EVENTS select PERF_USE_VMALLOC help The ARM series is a line of low-power-consumption RISC chip designs licensed by ARM Ltd and targeted at embedded applications and handhelds such as the Compaq IPAQ. ARM-based PCs are no longer manufactured, but legacy ARM-based PC hardware remains popular in Europe. There is an ARM Linux project with a web page at <http://www.arm.linux.org.uk/>.
4-9		arch/arm/mach-omap2/Kconfig	| comment "OMAP Core Type" depends on ARCH_OMAP2 config ARCH_OMAP2420 bool "OMAP2420 support" depends on ARCH_OMAP2 select OMAP_DM_TIMER select ARCH_OMAP_OTG config ARCH_OMAP2430 bool "OMAP2430 support" depends on ARCH_OMAP2 config ARCH_OMAP3430 bool "OMAP3430 support" depends on ARCH_OMAP3 select ARCH_OMAP_OTG config OMAP_PACKAGE_CBC bool
5-2		piggy.S	.section .piggydata,#alloc .globl input_data input_data: .incbin "arch/arm/boot/compressed/piggy.gzip" .globl input_data_end input_data_end:
5-2		piggy.gzip.S	.section .piggydata,#alloc .globl input_data input_data: .incbin "arch/arm/boot/compressed/piggy.lzo" .globl input_data_end input_data_end: