Success!My $1.50 cable came in from China, I followed the instructions
http://putokaz.wordpress.com/2013/03/12/raspberry-pi-rs232-serial-interface-options-revisit/
Hooked up the cable to the Pi, plugged in the USB to my computer ( please note
that the cable will power the Pi !!!! )
Started a terminal session on /dev/ttyUSB0 ( my laptop runs Linux ) and I am
able to work on the Pi's TTY0 port so I can now see the boot sequence:
Uncompressing Linux... done, booting the kernel.
[ 0.000000] Booting Linux on physical CPU 0x0
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Initializing cgroup subsys cpuacct
[ 0.000000] Linux version 3.12.32+ (dc4@dc4-XPS13-9333) (gcc version 4.8.3
20140303 (prerelease) (crosstool-NG linaro-1.13.1+bzr2650 - Linaro GCC 2014.03)
) #721 PREEMPT Fri Nov 7 16:50:31 GMT 2014
[ 0.000000] CPU: ARMv6-compatible processor [410fb767] revision 7 (ARMv7),
cr=00c5387d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing
instruction cache
[ 0.000000] Machine: BCM2708
[ 0.000000] cma: CMA: reserved 8 MiB at 1e800000
[ 0.000000] Memory policy: ECC disabled, Data cache writeback
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total
pages: 125984
[ 0.000000] Kernel command line: dma.dmachans=0x7f35 bcm2708_fb.fbwidth=720
bcm2708_fb.fbheight=480 bcm2708.boardrev=0xf bcm2708.serial=0xd4a3d3bf
smsc95xx.macaddr=B8:27:EB:A3:D3:BF bcm2708_fb.fbswap=1
sdhci-bcm2708.emmc_clock_freq=250000000 vc_mem.mem_base=0x1fa00000
vc_mem.mem_size=0x20000000 dwc_otg.lpm_enable=0 console=ttyAMA0,115200
kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4
elevator=deadline rootwait
[ 0.000000] PID hash table entries: 2048 (order: 1, 8192 bytes)
[ 0.000000] Dentry cache hash table entries: 65536 (order: 6, 262144 bytes)
[ 0.000000] Inode-cache hash table entries: 32768 (order: 5, 131072 bytes)
[ 0.000000] Memory: 488268K/507904K available (4522K kernel code, 243K
rwdata, 1352K rodata, 143K init, 701K bss, 19636K reserved)
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xdf800000 - 0xff000000 ( 504 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xdf000000 ( 496 MB)
[ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB)
[ 0.000000] .text : 0xc0008000 - 0xc05c4c90 (5876 kB)
[ 0.000000] .init : 0xc05c5000 - 0xc05e8fd4 ( 144 kB)
[ 0.000000] .data : 0xc05ea000 - 0xc0626c80 ( 244 kB)
[ 0.000000] .bss : 0xc0626c8c - 0xc06d6488 ( 702 kB)
[ 0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Preemptible hierarchical RCU implementation.
[ 0.000000] NR_IRQS:394
[ 0.000000] sched_clock: 32 bits at 1000kHz, resolution 1000ns, wraps every
4294967ms
[ 0.000000] Switching to timer-based delay loop
[ 0.000000] Console: colour dummy device 80x30
[ 0.000000] console [tty1] enabled
[ 0.001178] Calibrating delay loop (skipped), value calculated using timer
frequency.. 2.00 BogoMIPS (lpj=10000)
[ 0.001236] pid_max: default: 32768 minimum: 301
[ 0.001747] Mount-cache hash table entries: 512
[ 0.002609] Initializing cgroup subsys memory
[ 0.002722] Initializing cgroup subsys devices
[ 0.002758] Initializing cgroup subsys freezer
[ 0.002789] Initializing cgroup subsys blkio
[ 0.002933] CPU: Testing write buffer coherency: ok
[ 0.003385] Setting up static identity map for 0xc044f058 - 0xc044f0b4
[ 0.005324] devtmpfs: initialized
[ 0.021814] VFP support v0.3: implementor 41 architecture 1 part 20 variant
b rev 5
[ 0.023403] NET: Registered protocol family 16
[ 0.028764] DMA: preallocated 4096 KiB pool for atomic coherent allocations
[ 0.029416] cpuidle: using governor ladder
[ 0.029465] cpuidle: using governor menu
[ 0.029907] bcm2708.uart_clock = 0
[ 0.031912] hw-breakpoint: found 6 breakpoint and 1 watchpoint registers.
[ 0.031970] hw-breakpoint: maximum watchpoint size is 4 bytes.
[ 0.032004] mailbox: Broadcom VideoCore Mailbox driver
[ 0.032099] bcm2708_vcio: mailbox at f200b880
[ 0.032206] bcm_power: Broadcom power driver
[ 0.032245] bcm_power_open() -> 0
[ 0.032270] bcm_power_request(0, 8)
[ 0.532990] bcm_mailbox_read -> 00000080, 0
[ 0.533032] bcm_power_request -> 0
[ 0.533288] Serial: AMBA PL011 UART driver
[ 0.533455] dev:f1: ttyAMA0 at MMIO 0x20201000 (irq = 83, base_baud = 0) is
a PL011 rev3
[ 0.895553] console [ttyAMA0] enabled
[ 0.922398] bio: create slab <bio-0> at 0
[ 0.927943] SCSI subsystem initialized
[ 0.931936] usbcore: registered new interface driver usbfs
[ 0.937642] usbcore: registered new interface driver hub
[ 0.943199] usbcore: registered new device driver usb
[ 0.949802] Switched to clocksource stc
[ 0.954083] FS-Cache: Loaded
[ 0.957253] CacheFiles: Loaded
[ 0.973054] NET: Registered protocol family 2
[ 0.978970] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[ 0.986387] TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.992981] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.999427] TCP: reno registered
[ 1.002725] UDP hash table entries: 256 (order: 0, 4096 bytes)
[ 1.008596] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[ 1.015383] NET: Registered protocol family 1
[ 1.020386] RPC: Registered named UNIX socket transport module.
[ 1.026345] RPC: Registered udp transport module.
[ 1.031160] RPC: Registered tcp transport module.
[ 1.035885] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 1.043266] bcm2708_dma: DMA manager at f2007000
[ 1.048032] bcm2708_gpio: bcm2708_gpio_probe c05f7f10
[ 1.053615] vc-mem: phys_addr:0x00000000 mem_base=0x1fa00000
mem_size:0x20000000(512 MiB)
[ 1.063183] audit: initializing netlink socket (disabled)
[ 1.068685] type=2000 audit(0.910:1): initialized
[ 1.239100] VFS: Disk quotas dquot_6.5.2
[ 1.243473] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[ 1.252440] FS-Cache: Netfs 'nfs' registered for caching
[ 1.259348] NFS: Registering the id_resolver key type
[ 1.264650] Key type id_resolver registered
[ 1.268860] Key type id_legacy registered
[ 1.273678] msgmni has been set to 969
[ 1.279459] Block layer SCSI generic (bsg) driver version 0.4 loaded (major
252)
[ 1.287326] io scheduler noop registered
[ 1.291415] io scheduler deadline registered (default)
[ 1.296918] io scheduler cfq registered
[ 1.302131] BCM2708FB: allocated DMA memory 5ec00000
[ 1.307177] BCM2708FB: allocated DMA channel 0 @ f2007000
[ 1.317921] Console: switching to colour frame buffer device 90x30
[ 1.329712] bcm2708-dmaengine bcm2708-dmaengine: Load BCM2835 DMA engine
driver
[ 1.339144] uart-pl011 dev:f1: no DMA platform data
[ 1.345866] kgdb: Registered I/O driver kgdboc.
[ 1.352790] vc-cma: Videocore CMA driver
[ 1.358383] vc-cma: vc_cma_base = 0x00000000
[ 1.364757] vc-cma: vc_cma_size = 0x00000000 (0 MiB)
[ 1.371809] vc-cma: vc_cma_initial = 0x00000000 (0 MiB)
[ 1.388212] brd: module loaded
[ 1.398206] loop: module loaded
[ 1.403317] vchiq: vchiq_init_state: slot_zero = 0xde800000, is_master = 0
[ 1.412882] Loading iSCSI transport class v2.0-870.
[ 1.420553] usbcore: registered new interface driver smsc95xx
[ 1.427968] dwc_otg: version 3.00a 10-AUG-2012 (platform bus)
[ 1.635463] Core Release: 2.80a
[ 1.640233] Setting default values for core params
[ 1.646568] Finished setting default values for core params
[ 1.853799] Using Buffer DMA mode
[ 1.858650] Periodic Transfer Interrupt Enhancement - disabled
[ 1.866004] Multiprocessor Interrupt Enhancement - disabled
[ 1.873113] OTG VER PARAM: 0, OTG VER FLAG: 0
[ 1.878973] Dedicated Tx FIFOs mode
[ 1.884322] WARN::dwc_otg_hcd_init:1042: FIQ DMA bounce buffers: virt =
0xdec14000 dma = 0x5ec14000 len=9024
[ 1.897383] FIQ FSM acceleration enabled for :
[ 1.897383] Non-periodic Split Transactions
[ 1.897383] Periodic Split Transactions
[ 1.897383] High-Speed Isochronous Endpoints
[ 1.920294] WARN::hcd_init:473: FIQ at 0xc0327df8
[ 1.926533] WARN::hcd_init:474: FIQ ASM at 0xc03280a8 length 36
[ 1.934028] WARN::hcd_init:500: MPHI regs_base at 0xdf806000
[ 1.941289] dwc_otg bcm2708_usb: DWC OTG Controller
[ 1.947793] dwc_otg bcm2708_usb: new USB bus registered, assigned bus number
1
[ 1.956712] dwc_otg bcm2708_usb: irq 32, io mem 0x00000000
[ 1.963892] Init: Port Power? op_state=1
[ 1.969388] Init: Power Port (0)
[ 1.974487] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[ 1.982940] usb usb1: New USB device strings: Mfr=3, Product=2,
SerialNumber=1
[ 1.991788] usb usb1: Product: DWC OTG Controller
[ 1.998045] usb usb1: Manufacturer: Linux 3.12.32+ dwc_otg_hcd
[ 2.005468] usb usb1: SerialNumber: bcm2708_usb
[ 2.012459] hub 1-0:1.0: USB hub found
[ 2.017866] hub 1-0:1.0: 1 port detected
[ 2.024383] usbcore: registered new interface driver usb-storage
[ 2.032463] mousedev: PS/2 mouse device common for all mice
[ 2.040337] bcm2835-cpufreq: min=700000 max=1000000 cur=700000
[ 2.047864] bcm2835-cpufreq: switching to governor powersave
[ 2.055126] bcm2835-cpufreq: switching to governor powersave
[ 2.062343] sdhci: Secure Digital Host Controller Interface driver
[ 2.070000] sdhci: Copyright(c) Pierre Ossman
[ 2.076019] DMA channels allocated for the MMC driver
[ 2.120060] Load BCM2835 MMC driver
[ 2.126886] sdhci-pltfm: SDHCI platform and OF driver helper
[ 2.134268] ledtrig-cpu: registered to indicate activity on CPUs
[ 2.144090] hidraw: raw HID events driver (C) Jiri Kosina
[ 2.156685] usbcore: registered new interface driver usbhid
[ 2.163968] usbhid: USB HID core driver
[ 2.172092] TCP: cubic registered
[ 2.179023] Initializing XFRM netlink socket
[ 2.185960] NET: Registered protocol family 17
[ 2.192202] Key type dns_resolver registered
[ 2.202722] registered taskstats version 1
[ 2.208449] vc-sm: Videocore shared memory driver
[ 2.214658] [vc_sm_connected_init]: start
[ 2.220361] Indeed it is in host mode hprt0 = 00021501
[ 2.227487] vc_vchi_sm_init: failed to open VCHI service (-1)
[ 2.235921] [vc_sm_connected_init]: failed to initialize shared memory
service
[ 2.248194] mmc0: host does not support reading read-only switch. assuming
write-enable.
[ 2.269889] [vc_sm_connected_init]: end - returning -1
[ 2.276893] mmc0: new high speed SDHC card at address b368
[ 2.300122] mmcblk0: mmc0:b368 TAT 15.5 GiB
[ 2.308204] mmcblk0: p1 p2
[ 2.344719] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode.
Opts: (null)
[ 2.356412] VFS: Mounted root (ext4 filesystem) on device 179:2.
[ 2.375467] devtmpfs: mounted
[ 2.380798] Freeing unused kernel memory: 140K (c05c5000 - c05e8000)
[ 2.460014] usb 1-1: new high-speed USB device number 2 using dwc_otg
[ 2.469281] Indeed it is in host mode hprt0 = 00001101
[ 2.670365] usb 1-1: New USB device found, idVendor=0424, idProduct=9512
[ 2.678977] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2.691002] hub 1-1:1.0: USB hub found
[ 2.696795] hub 1-1:1.0: 3 ports detected
[ 2.980063] usb 1-1.1: new high-speed USB device number 3 using dwc_otg
[ 3.100365] usb 1-1.1: New USB device found, idVendor=0424, idProduct=ec00
[ 3.109248] usb 1-1.1: New USB device strings: Mfr=0, Product=0,
SerialNumber=0
[ 3.138114] smsc95xx v1.0.4
[ 3.208291] smsc95xx 1-1.1:1.0 eth0: register 'smsc95xx' at
usb-bcm2708_usb-1.1, smsc95xx USB 2.0 Ethernet, b8:27:eb:a3:d3:bf
[ 4.051561] udevd[157]: starting version 175
[ 13.988607] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 14.487698] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 20.496630] FAT-fs (mmcblk0p1): Volume was not properly unmounted. Some data
may be corrupt. Please run fsck.
�
Raspbian GNU/Linux 7 raspberrypi ttyAMA0
raspberrypi login: pi
Password:
Last login: Fri Nov 14 11:40:53 EST 2014 on ttyAMA0
.~~. .~~.
'. \ ' ' / .'
.~ .~~~..~. _ _
: .~.'~'.~. : ___ ___ ___ ___| |_ ___ ___ ___ _ _ ___|_|
~ ( ) ( ) ~ | _| .'|_ -| . | . | -_| _| _| | | | . | |
( : '~'.~.'~' : ) |_| |__,|___| _|___|___|_| |_| |_ | | _|_|
~ .~ ( ) ~. ~ |_| |___| |_|
( : '~' : )
'~ .~~~. ~'
'~'
System........: Linux raspberrypi 3.12.32+ #721 PREEMPT
GPU Version...: Nov 7 2014, version 3bd41a132583ec90e4a0410a4aa631d1e4e2d8ea
Temperature...: 42.8 C
Load..........: 1.41 (1minute) 0.40 (5minutes) 0.14 (15minutes)
Memory MB.....: Total: 484 Used: 118 Free: 366 Cached: 444 Swap: 0
pi@raspberrypi:~$
Yes I know I need to fix my SD card, but this is how you can trouble shoot
issues with the Pi
Joe
/** Joseph T Apuzzo
**
** Developer, Admin: Cloud, HPC, Storage
** Linux (LPIC-1), Windows, Android, AIX
** http://www.linkedin.com/in/japuzzo/
**
** PGP/GPG Key ID# 0xA16E26CF
** FingerPrint: 19A8 44EC F650 782B 6770 BF0E 2DAA 3D75 A16E 26CF
**/
_______________________________________________
Mid-Hudson Valley Linux Users Group http://mhvlug.org
https://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug
Upcoming Meetings (6pm - 8pm) Vassar College *
Dec 3 - Home Disaster Recovery
Jan 7 - When Will Then Be Now? Soon.
