안녕하세요

mv2450보드를 사용하고 있는 필로시스의 김수환입니다.

몇가지 문의 사항이 있습니다.

1. 현재 저희가 가지고 있는 보드의 usb device단자와 pc를 연결하여 cdc로 통신을 하려고 하는데요.
pc쪽에서 보드를 인식하지 못해 진행을 못하고 있습니다. 어떻게 해야하나요?
(usb cdc를 사용하기 위한 구체적인 방법도 알려주세요)

2. usb host 단자에 usb2serial 칩인 pl2303가 들어가 있는 케이블을 연결하여 사용하려고 하는데요.
cat > ttyUSB0을 하면 no such device라고 나오고 연결이 되질 않네요 무엇인 문제인가요?

3. 디버그 포트로 설정되어 있는 com3를 사용하려고 하면 시스템이 다운되어 버립니다.
어떻게 해야하나요? (cat > ttySAC3 사용시 다운됨)

아래사항은 로그출력 화면 내용입니다.

빠른 기술지원 부탁드립니다.




U-Boot 1.3.4 (Oct 30 2009 - 22:40:09) for SMDK2450


CPU: S3C2450@400MHz
Fclk = 800MHz, Hclk = 133MHz, Pclk = 66MHz
Board: SMDK2450 Mobile DDR
DRAM: 128 MB
Flash: 1 MB
NAND: 128 MB
In: serial
Out: serial
Err: serial
Net: smc911x
Hit any key to stop autoboot: 0

NAND read: device 0 offset 0x40000, size 0x300000
3145728 bytes read: OK
Boot with zImage

Starting kernel ...

Uncompressing Linux.................................................................................................................................. done, booting the kernel.
Linux version 2.6.24.2 rel-3-0-3 (root@philosys-linux) (gcc version 4.2.2) #351 Tue Jun 21 17:35:28 KST 2011
CPU: ARM926EJ-S [41069265] revision 5 (ARMv5TEJ), cr=00053177
Machine: SMDK2450
Ignoring unrecognised tag 0x00000000
Memory policy: ECC disabled, Data cache writeback
CPU S3C2450 (id 0x32450003)
S3C24XX Clocks, (c) 2004 Simtec Electronics
S3C2450: mpll on 800.000 MHz, cpu 400.000 MHz, mem 133.333 MHz, pclk 66.666 MHz
Warning: USB host bus not at 48MHz
S3C2450: epll on 48.000 MHz, usb-bus 48.000 MHz
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
CPU0: D cache: 16384 bytes, associativity 4, 32 byte lines, 128 sets
Built 1 zonelists in Zone order, mobility grouping on. Total pages: 12446
Kernel command line: root=/dev/mtdblock2 rootfstype=cramfs init=/linuxrc console=ttySAC0,115200
irq: clearing subpending status 00000002
PID hash table entries: 256 (order: 8, 1024 bytes)
timer tcon=00500000, tcnt d902, tcfg 00000200,00000000, usec 0000170a
Console: colour dummy device 80x30
console [ttySAC0] enabled
Dentry cache hash table entries: 8192 (order: 3, 32768 bytes)
Inode-cache hash table entries: 4096 (order: 2, 16384 bytes)
Memory: 49MB = 49MB total
Memory: 45324KB available (3644K code, 367K data, 208K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
net_namespace: 64 bytes
NET: Registered protocol family 16
S3C2450: Initialising architecture
S3C2443: IRQ Support
S3C24XX DMA Driver, (c) 2003-2004,2006 Simtec Electronics
DMA channel 0 at c3800000, irq 88
DMA channel 1 at c3800100, irq 89
DMA channel 2 at c3800200, irq 90
DMA channel 3 at c3800300, irq 91
DMA channel 4 at c3800400, irq 92
DMA channel 5 at c3800500, irq 93
DMA channel 6 at c3800600, irq 99
DMA channel 7 at c3800700, irq 100
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 2048 (order: 2, 16384 bytes)
TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
TCP: Hash tables configured (established 2048 bind 2048)
TCP reno registered
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (NAND) Aⓒ 2001-2006 Red Hat, Inc.
yaffs Jun 21 2011 17:32:55 Installing.
io scheduler noop registered
io scheduler anticipatory registered (default)
io scheduler deadline registered
io scheduler cfq registered
S3C_LCD clock got enabled :: 133.333 Mhz
LCD TYPE :: LTE430 will be initialized
GPF DATA : DAT :0xf0 CON:0x5500
Window[0] - FB1: map_video_memory: clear ff200000:0007f800
FB1: map_video_memory: dma=32980000 cpu=ff200000 size=0007f800
Window[0] - FB2: map_video_memory: clear ff23fc00:0003fc00
FB2: map_video_memory: dma=329bfc00 cpu=ff23fc00 size=0003fc00
Console: switching to colour frame buffer device 60x34
fb0: s3cfb frame buffer device
lp: driver loaded but no devices found
ppdev: user-space parallel port driver
Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing enabled
s3c2440-uart.0: ttySAC0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2440-uart.1: ttySAC1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2440-uart.2: ttySAC2 at MMIO 0x50008000 (irq = 76) is a S3C2440
s3c2440-uart.3: ttySAC3 at MMIO 0x5000c000 (irq = 94) is a S3C2440
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: module loaded
eth0: LAN9215 (rev 0) at 0xc385e000 IRQ 48
eth0: Ethernet addr: 00:09:c0:ff:ec:48
Linux video capture interface: v2.00
Request irq 81 for codec
Request irq 82 for preview
S3C FIMC v2.3
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
S3C NAND Driver, (c) 2007 Samsung Electronics
S3C NAND Driver is using hardware ECC.
NAND device: Manufacturer ID: 0xec, Chip ID: 0xf1 (Samsung NAND 128MiB 3,3V 8-bit)
Creating 4 MTD partitions on \"NAND 128MiB 3,3V 8-bit\":
0x00000000-0x00040000 : \"Bootloader\"
0x00040000-0x00400000 : \"Kernel\"
0x00400000-0x03400000 : \"Root - Cramfs\"
0x03400000-0x08000000 : \"File System\"
usbmon: debugfs is not available
s3c2410-ohci s3c2410-ohci: S3C OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
usb usb1: Product: S3C OHCI
usb usb1: Manufacturer: Linux 2.6.24.2 rel-3-0-3 ohci_hcd
usb usb1: SerialNumber: s3c24xx
usb 1-1: new full speed USB device using s3c2410-ohci and address 2
usb 1-1: device descriptor read/64, error -62
usb 1-1: device descriptor read/64, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 3
usb 1-1: device descriptor read/64, error -62
usb 1-1: device descriptor read/64, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 4
usb 1-1: device not accepting address 4, error -62
usb 1-1: new full speed USB device using s3c2410-ohci and address 5
usb 1-1: device not accepting address 5, error -62
usbcore: registered new interface driver cdc_acm
drivers/usb/class/cdc-acm.c: v0.25:USB Abstract Control Model driver for USB modems and ISDN adapters
usbcore: registered new interface driver usbserial
drivers/usb/serial/usb-serial.c: USB Serial support registered for generic
usbcore: registered new interface driver usbserial_generic
drivers/usb/serial/usb-serial.c: USB Serial Driver core
drivers/usb/serial/usb-serial.c: USB Serial support registered for pl2303
usbcore: registered new interface driver pl2303
drivers/usb/serial/pl2303.c: Prolific PL2303 USB to serial adaptor driver
drivers/usb/serial/usb-serial.c: USB Serial support registered for TI USB 3410 1 port adapter
drivers/usb/serial/usb-serial.c: USB Serial support registered for TI USB 5052 2 port adapter
usbcore: registered new interface driver ti_usb_3410_5052
drivers/usb/serial/ti_usb_3410_5052.c: TI USB 3410/5052 Serial Driver v0.9
Loaded s3c-udc version Jun 21 2011
mice: PS/2 mouse device common for all mice
mv2450-buttons successfully loaded
input: mv2450-buttons as /class/input/input0
S3C Touchscreen driver, (c) 2008 Samsung Electronics
S3C TouchScreen got loaded successfully : 12 bits
input: S3C TouchScreen as /class/input/input1
S3C24XX RTC, (c) 2004,2006 Simtec Electronics
s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling
s3c2410-rtc s3c2410-rtc: rtc core: registered s3c as rtc0
i2c /dev entries driver
s3c2410-i2c s3c2410-i2c: slave address 0x10
s3c2410-i2c s3c2410-i2c: bus frequency set to 378 KHz
s3c2410-i2c s3c2410-i2c: i2c-0: S3C I2C adapter
S3C2410 Watchdog Timer, (c) 2004 Simtec Electronics
s3c2410-wdt s3c2410-wdt: watchdog inactive, reset disabled, irq enabled
[s3c_hsmmc_probe]: s3c-hsmmc.0: at 0xc4e00000 with irq 37. clk src: hsmmc esysclk hsmmc-ext
[s3c_hsmmc_probe]: s3c-hsmmc.1: at 0xc5600000 with irq 36. clk src: hsmmc esysclk hsmmc-ext
Advanced Linux Sound Architecture Driver Version 1.0.15 (Tue Nov 20 19:16:42 2007 UTC).
ASoC version 0.13.1
ear detect: interrupt request successed.
WM9713/WM9714 SoC Audio Codec 0.12
asoc: AC97 HiFi <-> s3c24xx-ac97 mapping ok
ALSA device list:
#0: SMDK2450 (WM9713)
TCP cubic registered
NET: Registered protocol family 1
RPC: Registered udp transport module.
RPC: Registered tcp transport module.
s3c2410-rtc s3c2410-rtc: setting system clock to 2031-12-21 02:05:25 UTC (1955585125)
VFS: Mounted root (cramfs filesystem) readonly.
Freeing init memory: 208K
mount /etc as ramfs
cp: recursion detected, omitting directory \'/mnt/etc/network\'
cp: recursion detected, omitting directory \'/mnt/etc/sysconfig/console\'
cp: recursion detected, omitting directory \'/mnt/etc/sysconfig/networking/profiles\'
INIT: version 2.86 booting
INIT: /etc/inittab[45]: duplicate ID field \"3\"
Welcome to Samsung SMDK System
Press \'I\' to enter interactive startup.
storage network audio done [ OK ]
Setting clock : Sun Dec 21 03:05:28 MET 2031 [ OK ]
Setting hostname Samsung: [ OK ]
mount: mounting /dev/nfs on / failed: Invalid argument
Enabling swap space: [ OK ]
INIT: Entering runlevel: 3
Entering non-interactive startup
Starting system logger: [ OK ]
Starting kernel logger: [ OK ]
selected clock c03e3e30 (pclk) quot 35, calc 115740
selected clock c03e3e30 (pclk) quot 35, calc 115740
eth0: link up, 100Mbps, full-duplex, lpa 0x45E1

Samsung SMDK Board on a armv5tejl
Samsung login: