TI-Planet | Programmes, Tutoriaux, Forum sur les calculatrices TI

by **critor** » 19 Jan 2018, 14:14

Dans un article précédent nous découvrions l'entrée série du TI-Nspire Navigator Access Point, le point d'accès permettant la création de réseaux de calculatrices TI-Nspire sans fil en classe.

Nous réussissions à en tirer profit pour accéder à la console U-Boot en transmettant n'importe quel caractère au moment où le log de démarrage nous y invitait :

Code: Select all: Texas Instruments X-Loader 1.4.4ss (Oct 18 2011 - 17:48:56) SDRAM Size = 64 MB TI USB AP - Rev 1.0 I2C read: I/O error I2C read: I/O error Loading u-boot.bin from nand U-Boot 2010.03-dirty (Oct 18 2011 - 17:47:59) - tiusbap OMAP36XX/37XX-GP ES2.1, CPU-OPP2, L3-165MHz, TIUSBAP + LPDDR/NAND DRAM: 64 MB NAND: 128 MiB *** Warning - bad CRC or NAND, using default environment In: serial Out: serial Err: serial Die ID #5b7800029e380000016b1ef10c027024 Hit any key to stop autoboot: 0 No MMC card found Booting from nand ... NAND read: device 0 offset 0x280000, size 0x600000 6291456 bytes read: OK ## Booting kernel from Legacy Image at 82000000 ... Image Name: OpenWRT Kernel Image beagleboard Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 4417652 Bytes = 4.2 MB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK Loading Kernel Image ... OK OK Starting kernel ... Uncompressing Linux... done, booting the kernel. [ 0.000000] Linux version 2.6.37 (etbldusr@pdt-nevada.eps.ti.com) (gcc version 4.4.5 (GCC) ) #2 PREEMPT Wed Jul 31 12:14:50 CDT 2013 [ 0.000000] CPU: ARMv7 Processor [413fc082] revision 2 (ARMv7), cr=10c53c7f [ 0.000000] CPU: VIPT nonaliasing data cache, VIPT aliasing instruction cache [ 0.000000] Machine: OMAP3 Beagle Board [ 0.000000] Memory policy: ECC disabled, Data cache writeback [ 0.000000] OMAP3630 ES1.2 (l2cache neon isp 192mhz_clk ) [ 0.000000] SRAM: Mapped pa 0x40200000 to va 0xfe400000 size: 0x10000 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16256 [ 0.000000] Kernel command line: console=ttyO2,115200n8 mtdparts=nand:512k(x-loader),1920k(u-boot),128k(u-boot-env),6m(kernel),6m(kernel2),4m(localconf),-(unused) [ 0.000000] PID hash table entries: 256 (order: -2, 1024 bytes) [ 0.000000] Dentry cache hash table entries: 8192 (order: 3, 32768 bytes) [ 0.000000] Inode-cache hash table entries: 4096 (order: 2, 16384 bytes) [ 0.000000] Memory: 64MB = 64MB total [ 0.000000] Memory: 57796k/57796k available, 7740k reserved, 0K highmem [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] DMA : 0xffc00000 - 0xffe00000 ( 2 MB) [ 0.000000] vmalloc : 0xc4800000 - 0xf8000000 ( 824 MB) [ 0.000000] lowmem : 0xc0000000 - 0xc4000000 ( 64 MB) [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB) [ 0.000000] .init : 0xc0008000 - 0xc02dd000 (2900 kB) [ 0.000000] .text : 0xc02dd000 - 0xc069cc30 (3840 kB) [ 0.000000] .data : 0xc069e000 - 0xc06cba20 ( 183 kB) [ 0.000000] NR_IRQS:375 [ 0.000000] Clocking rate (Crystal/Core/MPU): 26.0/332/600 MHz [ 0.000000] omap_hwmod: i2c1: softreset failed (waited 10000 usec) [ 0.000000] omap_hwmod: i2c2: softreset failed (waited 10000 usec) [ 0.000000] omap_hwmod: i2c3: softreset failed (waited 10000 usec) [ 0.000000] Reprogramming SDRC clock to 332000000 Hz [ 0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts [ 0.000000] Total of 96 interrupts on 1 active controller [ 0.000000] GPMC revision 5.0 [ 0.000000] Trying to install interrupt handler for IRQ368 [ 0.000000] Trying to install interrupt handler for IRQ369 [ 0.000000] Trying to install interrupt handler for IRQ370 [ 0.000000] Trying to install interrupt handler for IRQ371 [ 0.000000] Trying to install interrupt handler for IRQ372 [ 0.000000] Trying to install interrupt handler for IRQ373 [ 0.000000] Trying to install interrupt handler for IRQ374 [ 0.000000] Trying to install type control for IRQ375 [ 0.000000] Trying to set irq flags for IRQ375 [ 0.000000] OMAP clockevent source: GPTIMER12 at 32768 Hz [ 0.000000] Calibrating delay loop... 515.72 BogoMIPS (lpj=2015232) [ 0.000000] pid_max: default: 32768 minimum: 301 [ 0.000000] Security Framework initialized [ 0.000000] Mount-cache hash table entries: 512 [ 0.000000] CPU: Testing write buffer coherency: ok [ 0.000000] regulator: core version 0.5 [ 0.000000] regulator: dummy: [ 0.000000] NET: Registered protocol family 16 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] OMAP GPIO hardware version 2.5 [ 0.000000] omap_mux_init: Add partition: #1: core, flags: 0 [ 0.000000] OMAP3 Beagle Rev: xM [ 0.000000] Found NAND on CS0 [ 0.000000] Registering NAND on CS0 [ 0.000000] Unable to get DVI reset GPIO [ 0.000000] OMAP DMA hardware revision 5.0 [ 0.010406] bio: create slab <bio-0> at 0 [ 0.011840] SCSI subsystem initialized [ 0.013885] usbcore: registered new interface driver usbfs [ 0.014129] usbcore: registered new interface driver hub [ 0.014373] usbcore: registered new device driver usb [ 0.016845] Switching to clocksource 32k_counter [ 0.019714] musb-hdrc: version 6.0, peripheral, debug=0 [ 0.019805] musb-hdrc musb-hdrc.0: dma type: dma-inventra [ 0.020446] musb-hdrc musb-hdrc.0: USB Peripheral mode controller at fa0ab000 using DMA, IRQ 92 [ 0.020935] NET: Registered protocol family 2 [ 0.021179] IP route cache hash table entries: 1024 (order: 0, 4096 bytes) [ 0.021972] TCP established hash table entries: 2048 (order: 2, 16384 bytes) [ 0.022033] TCP bind hash table entries: 2048 (order: 1, 8192 bytes) [ 0.022064] TCP: Hash tables configured (established 2048 bind 2048) [ 0.022094] TCP reno registered [ 0.022094] UDP hash table entries: 256 (order: 0, 4096 bytes) [ 0.022125] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes) [ 0.022399] NET: Registered protocol family 1 [ 0.022857] RPC: Registered udp transport module. [ 0.022888] RPC: Registered tcp transport module. [ 0.022888] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 2.847747] omap_init_opp_table: no hwmod or odev for iva, [6] cannot add OPPs. [ 2.848449] omap-iommu omap-iommu.0: isp registered [ 2.848754] AM37x/DM37x Linux PSP version 04.02.00.07 (OMAP3BEAGLE) [ 2.850311] VFS: Disk quotas dquot_6.5.2 [ 2.850433] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) [ 2.850860] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 2.850860] Registering mini_fo version $Id$ [ 2.851470] JFFS2 version 2.2 (NAND) (SUMMARY) (LZO) (LZMA) (RTIME) (RUBIN) (CMODE_PRIORITY) (c) 2001-2006 Red Hat, Inc. [ 2.852172] msgmni has been set to 112 [ 2.853424] io scheduler noop registered [ 2.853424] io scheduler deadline registered (default) [ 2.854156] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 2.855987] omap_uart.0: ttyO0 at MMIO 0x4806a000 (irq = 72) is a OMAP UART0 [ 2.856353] omap_uart.1: ttyO1 at MMIO 0x4806c000 (irq = 73) is a OMAP UART1 [ 2.856719] omap_uart.2: ttyO2 at MMIO 0x49020000 (irq = 74) is a OMAP UART2 [ 3.422271] console [ttyO2] enabled [ 3.426269] omap_uart.3: ttyO3 at MMIO 0x49042000 (irq = 80) is a OMAP UART3 [ 3.445373] brd: module loaded [ 3.454193] loop: module loaded [ 3.459167] omap2-nand driver initializing [ 3.463836] ONFI flash detected [ 3.467346] NAND device: Manufacturer ID: 0x2c, Chip ID: 0xb1 (Micron ) [ 3.474273] Division by zero in kernel. [ 3.478302] Function entered at [<c02e7bec>] from [<c0477944>] [ 3.484405] NAND_ECC_NONE selected by board driver. This is not recommended !! [ 3.491973] Creating 7 MTD partitions on "omap2-nand.0": [ 3.497528] 0x000000000000-0x000000080000 : "X-Loader" [ 3.504852] 0x000000080000-0x000000260000 : "U-Boot" [ 3.512634] 0x000000260000-0x000000280000 : "U-Boot Env" [ 3.519775] 0x000000280000-0x000000880000 : "Kernel" [ 3.529602] 0x000000880000-0x000000e80000 : "Kernel2" [ 3.539520] 0x000000e80000-0x000001280000 : "LocalConf" [ 3.548706] 0x000001280000-0x000008000000 : "Unused" [ 3.613342] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 3.620300] ehci-omap.0 supply hsusb0 not found, using dummy regulator [ 4.634185] ehci-omap ehci-omap.0: OMAP-EHCI Host Controller [ 4.640197] ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1 [ 4.648040] ehci-omap ehci-omap.0: irq 77, io mem 0x48064800 [ 4.665466] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00 [ 4.671569] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 4.678680] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 4.686218] usb usb1: Product: OMAP-EHCI Host Controller [ 4.691772] usb usb1: Manufacturer: Linux 2.6.37 ehci_hcd [ 4.697418] usb usb1: SerialNumber: ehci-omap.0 [ 4.703125] hub 1-0:1.0: USB hub found [ 4.707122] hub 1-0:1.0: 3 ports detected [ 4.736206] usbcore: registered new interface driver usbtest [ 4.742797] input: gpio-keys as /devices/platform/gpio-keys/input/input0 [ 4.750946] omap_device: omap_wdt.-1: new worst case activate latency 0: 30517 [ 4.759155] OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec [ 4.767791] TCP cubic registered [ 4.771148] TCP westwood registered [ 4.774871] Initializing XFRM netlink socket [ 4.779357] NET: Registered protocol family 17 [ 4.784057] NET: Registered protocol family 15 [ 4.788818] 802.1Q VLAN Support v1.8 Ben Greear <greearb@candelatech.com> [ 4.795928] All bugs added by David S. Miller <davem@redhat.com> [ 4.802215] Registering the dns_resolver key type [ 4.807281] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 3 [ 4.815704] ThumbEE CPU extension supported. [ 4.821289] omap3_vdd_data_configure: PMIC info requried to configure vdd_mpu notpopulated.Hence cannot initialize vdd_mpu [ 4.832946] omap3_vdd_data_configure: PMIC info requried to configure vdd_core notpopulated.Hence cannot initialize vdd_core [ 4.844696] omap_voltage_scale_vdd: No voltage scale API registered for vdd_mpu [ 4.852355] omap_voltage_scale_vdd: No voltage scale API registered for vdd_core [ 4.860107] sr_dev_init: No Voltage table registerd fo VDD1.Something really wrong [ 4.860107] [ 4.869567] sr_dev_init: No Voltage table registerd fo VDD2.Something really wrong [ 4.869567] [ 4.879028] Power Management for TI OMAP3. [ 4.883605] sr_init: No PMIC hook to init smartreflex [ 4.889404] sr_init: platform driver register failed for SR [ 4.899200] clock: disabling unused clocks to save power [ 4.906585] drivers/rtc/hctosys.c: unable to open rtc device (rtc0) [ 4.914215] Freeing init memory: 2900K [ 5.032592] usb 1-1: new high speed USB device using ehci-omap and address 2 - preinit - [ 5.241058] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9170 [ 5.252014] usb 1-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48 [ 5.265655] usb 1-1: Product: USB2.0 WLAN [ 5.273651] usb 1-1: Manufacturer: ATHER [ 5.281799] usb 1-1: SerialNumber: 12345 Press the [f] key and hit [enter] to enter failsafe mode - regular preinit - - init - Please press Enter to activate this console. [ 8.731109] Compat-wireless backport release: compat-wireless-2011-04-14 [ 8.748321] Backport based on wireless-testing.git master-2011-04-19 [ 8.854858] cfg80211: Calling CRDA to update world regulatory domain [ 9.021148] cfg80211: World regulatory domain updated: [ 9.032623] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 9.055969] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 9.071685] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 9.087402] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 9.102996] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 9.118103] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 9.127258] usbcore: registered new interface driver rt2800usb [ 9.290618] usb 1-1: reset high speed USB device using ehci-omap and address 2 [ 9.487640] usbcore: registered new interface driver carl9170 [ 9.496398] usb 1-1: driver API: 1.9.2 2011-01-22 [1-1] [ 9.509368] usb 1-1: firmware API: 1.9.4 2011-06-30 [ 9.514465] usb 1-1: Unprotected firmware image. [ 9.524780] usb 1-1: driver does not support all firmware features. [ 9.541748] usbcore: registered new interface driver zd1211rw #### SCRIPT:navbridge start... [ 9.922973] JFFS2 notice: (647) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found. [ 10.043792] cfg80211: Calling CRDA for country: US [ 10.058685] usb 1-1: Atheros AR9170 is registered as 'phy0' [ 10.287597] cfg80211: Regulatory domain changed to country: US [ 10.306091] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 10.321594] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2700 mBm) [ 10.338470] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 1700 mBm) [ 10.352844] cfg80211: (5250000 KHz - 5330000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 10.376403] cfg80211: (5490000 KHz - 5600000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 10.392028] cfg80211: (5650000 KHz - 5710000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 10.407653] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 3000 mBm) [ 11.032348] JFFS2 notice: (662) jffs2_build_xattr_subsystem: complete building xattr subsystem, 0 of xdatum (0 unchecked, 0 orphan) and 0 of xref (0 dead, 0 orphan) found. #### SCRIPT:navbridge Restarting carl9170 with H[ 12.059173] usbcore: deregistering interface driver carl9170 W-crypto disabled... [ 14.235931] usb 1-1: reset high speed USB device using ehci-omap and address 2 [ 19.259674] ehci-omap ehci-omap.0: remove, state 1 [ 19.264709] usb usb1: USB disconnect, address 1 [ 19.269897] hub 1-0:1.0: cannot reset port 1 (err = -19) [ 19.275665] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 19.281402] hub 1-0:1.0: cannot disable port 1 (err = -19) [ 19.287445] usb 1-1: USB disconnect, address 2 [ 19.297943] ehci-omap ehci-omap.0: force halt; handshake fa064814 0000c000 00008000 -> -110 [ 19.606048] usbcore: registered new interface driver carl9170 [ 19.631408] ehci-omap ehci-omap.0: USB bus 1 deregistered [ 19.637634] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver [ 19.644866] ehci-omap.0 supply hsusb0 not found, using dummy regulator [ 20.657653] ehci-omap ehci-omap.0: OMAP-EHCI Host Controller [ 20.663665] ehci-omap ehci-omap.0: new USB bus registered, assigned bus number 1 [ 20.672027] ehci-omap ehci-omap.0: irq 77, io mem 0x48064800 [ 20.688995] ehci-omap ehci-omap.0: USB 2.0 started, EHCI 1.00 [ 20.695098] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002 [ 20.702606] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1 [ 20.710357] usb usb1: Product: OMAP-EHCI Host Controller [ 20.716094] usb usb1: Manufacturer: Linux 2.6.37 ehci_hcd [ 20.721923] usb usb1: SerialNumber: ehci-omap.0 [ 20.729064] hub 1-0:1.0: USB hub found [ 20.733001] hub 1-0:1.0: 3 ports detected [ 21.071868] usb 1-1: new high speed USB device using ehci-omap and address 2 [ 21.325408] usb 1-1: New USB device found, idVendor=0cf3, idProduct=9170 [ 21.332702] usb 1-1: New USB device strings: Mfr=16, Product=32, SerialNumber=48 [ 21.340637] usb 1-1: Product: USB2.0 WLAN [ 21.344848] usb 1-1: Manufacturer: ATHER [ 21.349212] usb 1-1: SerialNumber: 12345 [ 21.485900] usb 1-1: reset high speed USB device using ehci-omap and address 2 [ 21.721771] usb 1-1: driver API: 1.9.2 2011-01-22 [1-1] [ 21.727416] usb 1-1: firmware API: 1.9.4 2011-06-30 [ 21.733032] usb 1-1: Unprotected firmware image. [ 21.738098] usb 1-1: driver does not support all firmware features. [ 22.230682] usb 1-1: Atheros AR9170 is registered as 'phy1' #### SCRIPT:navbridge Restarted carl9170 with HW-crypto disabled [ 22.630920] gadgetfs: USB Gadget filesystem, version 24 Aug 2004 #### Starting navbridge... #### Starting transport_test_server... NavBridge version 3.6.0.10 MAIN:Detach state = PTHREAD_CREATE_JOINABLE MAIN:Scope = PTHREAD_SCOPE_SYSTEM MAIN:Inherit scheduler = PTHREAD_EXPLICIT_SCHED MAIN:Scheduling policy = SCHED_OTHER [priority = 0] MAIN:Stack size = 2093056 (0x1FF000) [Guard=4096=0x1000] INIT: Navbridge... INIT: ConfigFile loaded: configuredDevices size = 67 === Starting thread 0x48fbc 11AccessPoint 0x48fbc running 1 AP::init: Status of generating interface config file (with MacAddr): 0 AP::init: MacAddr = 0009371F0F34 Starting the AP... AP::readMode: Mode = 3 AP::readChannel: Channel = 9 AP::readRegion: Region = US AP::readTxPower: TxPower = 19 AP::readSSID = Maths Andreani === Starting thread 0x48fa0 6Radius === Starting thread 0x49ef0 4Dhcp AP::checkForMacOverride: Using HW MacAddr = 0009371F0F34 0x48fa0 running 1 0x49ef0 running 1 AP::setSSID: SSID = TI-NAV-N-Maths Andreani AP::writeRadiusUsersFile: SUCCESS writing to the Radius Users config file AP::writeMacAclFile: SUCCESS Mac-ACL config file AP::setupHostapd: configuration setup success #### SCRIPT:ti_config start... #### Starting hostapd... #### hostapd started #### SCRIPT:ti_config start complete AccessPoint::startHostapd: (0) Thu Jan 1 00:00:28 1970 : Info: Starting - reading configuration files ... Radius server started (time=28) DHCP server started (time=28) USB Control thread starting. USB Control Initializing Device [28.467834] USB Control Initializing Device: open complete, now write config... [ 28.334259] gadgetfs: bound to musb-hdrc driver USB Control Initializing Device Complete USB Control Starting: musb-hdrc ep0 (fd=26) [28.536743] Initialize USB interface. === Starting thread 0x4ec48 8UDPInput === Starting thread 0x4ee48 8Asyncmsg === Starting thread 0x4edcc 6Pinger === Starting thread 0x4ed64 10Dispatcher === Starting thread 0x4ef54 10PingThread INIT: Navbridge complete! 0x4ec48 running 1 0x4ee48 running 1 0x4edcc running 1 Pinger: Socket created 40. 0x4ed64 running 1 0x4ef54 running 1 [ 29.522430] gadgetfs: connected USB CONNECT high speed [29.712036] USB Setup Request: USB_REQ_GET_DESCRIPTOR (0) (index=0) USB Setup Request: USB_REQ_GET_DESCRIPTOR (2) (index=1033) [ 29.550323] gadgetfs: configuration #1 USB Setup Request: USB_REQ_SET_CONFIGURATION to CONFIG #1 Start IO SINK THREAD loop... SOURCE THREAD loop... Start IO complete (source_fd=44, sink_fd=43) Dhcp: Lease count (initial): 0 ################ Restart after 25 secs. Restarting AP from restart() m_monitorForceRestart 1 ################ Restarting Hostapd (time=57) #### SCRIPT:ti_config stop... #### Stopping hostapd... #### SCRIPT:ti_config stop complete AccessPoint:: stopHostapd: (0) Radius server stopped (time=59) DHCP server stopped (time=60) AP::checkForMacOverride: Using HW MacAddr = 0009371F0F34 AP::setSSID: SSID = TI-NAV-N-Maths Andreani AP::writeRadiusUsersFile: SUCCESS writing to the Radius Users config file AP::writeMacAclFile: SUCCESS Mac-ACL config file AP::setupHostapd: configuration setup success #### SCRIPT:ti_config start... #### Starting hostapd... #### hostapd started #### SCRIPT:ti_config start complete AccessPoint::startHostapd: (0) Thu Jan 1 00:01:02 1970 : Info: Starting - reading configuration files ... Radius server started (time=62) DHCP server started (time=62)

Mais si nous regardons plus loin dans ce log une fois le système d'exploitation lancé, nous y trouvons une autre invitation après 5 à 8 secondes :

Code: Select all: Press the [f] key and hit [enter] to enter failsafe mode - regular preinit - - init - Please press Enter to activate this console.

Il y aurait donc un mode sans échec accessible en envoyant les caractères f et retour chariot sur l'entrée série, ainsi qu'une console en envoyant le seul retour chariot.

Qu'à cela ne tienne, testons, et effectivement le retour chariot déclenche l'apparition d'un bandeau BusyBox / OpenWrt vantant la consommation de boissons alcoolisées - ils sont coquins chez TI - suivi d'une invite de commande de type Linux en mode root :

Code: Select all: BusyBox v1.17.3 (2013-07-31 11:17:57 CDT) built-in shell (ash) Enter 'help' for a list of built-in commands. _______ ________ __ | |.-----.-----.-----.| | | |.----.| |_ | - || _ | -__| || | | || _|| _| |_______|| __|_____|__|__||________||__| |____| |__| W I R E L E S S F R E E D O M KAMIKAZE (bleeding edge, unknown) ------------------ * 10 oz Vodka Shake well with ice and strain * 10 oz Triple sec mixture into 10 shot glasses. * 10 oz lime juice Salute! --------------------------------------------------- root@OpenWrt:/#

Nous voici donc en tant qu'utilisateur root sur une invite de commandes Linux, de quoi faire nombres de choses... ou pas. Petit aperçu des commandes disponibles ainsi que du système de fichiers :

Code: Select all: root@OpenWrt:/# help Built-in commands: ------------------ . : [ [[ alias bg break cd chdir command continue echo eval exec exit export false fg getopts hash help jobs kill let local printf pwd read readonly return set shift source test times trap true type ulimit umask unalias unset wait root@OpenWrt:/# pwd / root@OpenWrt:/# ls bin etc localconf proc sbin usr data init mnt rom sys var dev lib overlay root tmp www root@OpenWrt:/#

by **critor** » 18 Jan 2018, 19:44

Lors de la conférence éducative internationale T3 de 2002 à Calgary au Canada, Texas Instruments a présenté ses prototypes de futures calculatrices alors révolutionnaires. Parmi les modèles en question il y avait le TI-PLT SU1 surnommé en interne Toto, à notre connaissance la toute première calculatrice graphique à écran couleur tactile. Nous avons justement la chance de diposer de l'un des rares exemplaires encore existants à ce jour et qui plus est encore fonctionnel, basé sur un système d'exploitation de type Linux, MontaVista Linux plus précisément.

Lorsque l'on observe la carte mère recto-verso, on observe deux emplacements pour un connecteur 2x7=14 broches :

J01H en bas à droite côté clavier/écran
J02H en bas à gauche de l'autre côté (juste sous le lecteur de carte SD)

(source photos carte : musée Datamath)

Quelques mesures à l'ohmmètre permettent de constater que les emplacements J01H et J02H sont en fait jumeaux, et prévus pour un seul connecteur à rajouter au choix d'un côté ou de l'autre. Chacun des 14 contacts de J02H est bel et bien relié à son contact équivalent sur J01H, bien évidemment avec une disposition inversée puisque l'on retourne la carte. Remarquons d'ailleurs à ce sujet une erreur de numérotation, le contact 13 de J02H étant relié au contact numéroté 14 sur J01H.

On récupère en passant la position des masses, qui ressemble énormément à du JTAG TI.

Expérimentons donc en nous soudant un connecteur 13 broches sur J01H ou J02H. Nous opterons pour le verso avec J02H, afin que la hauteur du connecteur n'empêche pas de refermer correctement le prototype ou de continuer à utiliser les quelques toutches dont ils disposent, nombre de contacts étant proches de J01H. On peut utiliser comme connecteur des réglettes de broches coudées au pas de 2,54mm.

Cette fois-ci nous pouvons être certain de nos soudures sur J02H, leurs contacts pouvant être aisément vérifiés en utilisant J01H.

Hélas, notre chance s'arrête ici pour ce soir : une fois connecté via notre interface JTAG à OpenOCD, ce dernier ne détecte rien.

by **critor** » 17 Jan 2018, 23:46

Le calendrier du BAC 2018 se fait attendre cette année, peut-être à cause de la rédaction compliquée des consignes relatives au mode examen.

De source syndicale, voici les premières dates des épreuves du BAC 2018 en Métropole, qui devraient être officialisé et complétées les jeudi 18 ou 25 janvier par une publication au Bulletin Officiel :

https://toutmonexam.fr/calendrier.php?m=6&y=2018
(cliquer si besoin sur la bonne série, ainsi que sur la bonne classe pour ceux concernés par les épreuves anticipées de Première)

Grand rendez-vous national donc le lundi 18 juin 2018 avec la Philosophie le matin et pour les candidats de Première le Français l'après-midi.

Egalement disponibles de façon intégrale sur le calendrier lié ci-dessus :

les dates pour les candidats passant les épreuves en Amérique du Nord (passer le calendrier au mois de mai)
les dates pour les candidats passant les épreuves au Liban (passer le calendrier au mois de mai)
les dates pour les candidats passant les épreuves en Polynésie française
les dates pour les candidats passant les épreuves en Asie

Source : https://www.sgen-cfdt.fr/publications/? ... -pour-2018 via http://langlois.blog.lemonde.fr/2018/01 ... reat-2018/

by **critor** » 17 Jan 2018, 23:26

Le DNB 2018 subit quelques petites évolutions dans sa forme.

Des sujets zéros représentatifs des nouvelles épreuves ont maintenant été publiés sur le site officiel Eduscol, dans toutes les matières concernées par les changements, aussi bien pour la série Générale que Professionnelle :

Français
Histoire-Géographie
Mathématiques

Quelques corrections sont déjà disponibles :

Sujets DNB 2018 série Générale

Sujets DNB 2018 série Professionnelle

Source : http://eduscol.education.fr/cid60618/pr ... xamen.html

by **critor** » 17 Jan 2018, 23:14

De source syndicale, voici le calendrier des épreuves du DNB 2018 en Métropole, qui devrait être officialisé les jeudi 18 ou 25 janvier par une publication au Bulletin Officiel :

DNB série Générale Métropole

DNB série Professionnelle Métropole

Rendez-vous donc les jeudi 28 et vendredi 29 juin 2018 pour les toutes nouvelles épreuves du DNB 2018.

Egalement disponibles sur les calendriers liés ci-dessus :

les dates pour les candidats passant les épreuves en Amérique du Nord
les dates pour les candidats passant les épreuves en Polynésie française (passer le calendrier au mois de juillet)

Source : https://www.sgen-cfdt.fr/publications/? ... -pour-2018 via http://langlois.blog.lemonde.fr/2018/01 ... reat-2018/