linux下使用串口终端C-kermint连接飞凌OK6410开发板

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linux下使用串口终端C-kermint连接飞凌OK6410开发板

发布日期：2011-06-23

系统：Ubuntu9.10

开发板：飞凌OK6410

最近购入一块新的开发板，芯片是基于三星的S3C6410，ARM11，使用之后发现，速度果然很不错，跟ARM9的S3C2440不可同日而语。飞凌的开发板质量很不错，跟友善之臂相比，谁比较好一目了然，当然，这二家的主要市场不太一样，友善之臂主要面向的是学生市场，价格自然要低些，但是一份价格一份货，如果要作为产品开发，自然还是要选择可靠点。不过，我纯粹是拿来学习，增长功力的。

当然，新的开发板，总要为它搭建下开发环境，虽然已经是比较熟练了，但是记录下来，既可以当作笔记，也可以帮助其他人。

飞凌的开发板比较偏向wince，自然wince的支持就比较好，而linux上就稍微薄弱了点，linux版的用户手册里甚至没记录怎么linux下进行串口的连接，只简单描述了如何用windows的超级终端连接。

一般来说，在linux下可以使用minicom和C-kerimit两款通讯软件，而我个人比较偏向C-kermit，实际开发中，我也一直使用C-kermit，原因有两个，第一，当我第一次搭开发环境时，我选择了minicom，结果在ubuntu下既乱码，显示效果又很奇怪，折腾了很久才搞定；第二，C-kermit的确是一个很强大的软件，而且配合Uboot可以完成许多特性，并且显示效果也不错，所以就一直用到了现在。

目前，ubuntu里已经集成了C-kermit,使用命令kermint就可以打开，如果需要自己编译安装，可以去官网地址下载源码包。

C-kermit官网：http://www.columbia.edu/kermit/

官网上还附带了使用手册，可以帮助来学习这个强大的工具。

第一步，就是先配置使用的参数，当然可以打开kermit后来来配置，然后一开始配置好就可以省去很多麻烦。

如果选择全局的参数配置，就使用命令：

#sudo vi /etc/kermit/kermrc

如果只针对当前的用户，就使用命令：

#vi ~/.kermrc

打开文件后，把配置参数写入进入，网上通用的参数如下：

#----- kermrc for /dev/ttyUSB0 -------------------

#设置通信的目标串口，由于我的笔记本没有串口，使用了USB转串口，所以设备为/dev/ttyUSB0

set line /dev/ttyUSB0

#设置波特率

set speed 115200

#关闭通信监视

set carrier-watch off

#设置没有握手协议

set handshake none

#数据流控制为无

set flow-control none

#设置保守安全及缓慢的传输设置

robust

#设置可以传输二进制文件

set file type bin

#限制传输文件名

set file name lit

#设置接受文件包的大小为1000字节

set rec pack 1000

#设置传输文件包的大小为1000字节

set send pack 1000

#设置窗口大小

set window 5

#---------end------------------------------------

这些参数就足够保证能初步连上OK6410，当然，C-kermit其实还有更多参数，并且在配置里还可以定制不同情况下的参数，这些属于题外话，在以后可以慢慢探讨。

第二步，就是打开命令进行连接，不过这之前，可以先了解下C-kermit的知识。

kermit有两种模式，一种为终端模式，一种为命令模式

处于终端模式时，显示从串口发回来的数据，处于命令模式时，显示命令提示符，并等待用户输入命令后，执行命令。

运行kermit，进入命令模式，输入"connect"并回车，进入终端模式。

在终端模式按下Ctrl + \, 再按下C 返回命令模式

常用命令

connect : 连接串口设备，连接成功后进入终端模式，简写为c

quit: 退出kermit，简写为q

send: 使用kermit协议发送文件，与uboot传送文件时使用

run : 运行外部命令，我们将用这个命令调用xmodem发送文件。

? : 显示全部命令

! : 运行一个shell,需要临时离开kermit进行其它的作业的时候，可以使用叹号命令。结果操作时使用exit退出shell，返回kermit。

了解了这些知识，可以去连接OK6410了。

最后，以运行C-kermint并且连接上OK6410来结束本篇文章，在未来还可以探讨在裸机的情况下将Uboot传输进去。

# kermit

?Not confirmed - robust

Command stack:

1. File : /home/wangchen/.kermrc (line 5)

0. Prompt: (top level)

?No keywords match - sendd

Command stack:

1. File : /home/wangchen/.kermrc (line 9)

0. Prompt: (top level)

C-Kermit 8.0.211, 10 Apr 2004, for Linux

Trustees of Columbia University in the City of New York.

Type ? or HELP for help.

(/home/wangchen/Desktop/) C-Kermit>c

Connecting to /dev/ttyUSB0, speed 115200

Escape character: Ctrl-\ (ASCII 28, FS): enabled

Type the escape character followed by C to get back,

or followed by ? to see other options.

----------------------------------------------------

U-Boot 1.1.6 (Jan 14 2010 - 00:48:10) for SMDK6410

****************************************

** u-boot 1.1.6 **

** Updated for TE6410 Board **

** Version 1.0 (10-01-15) **

** OEM: Forlinx Embedded **

** Web: http://www.witech.com.cn **

****************************************

CPU: S3C6410 @532MHz

Fclk = 532MHz, Hclk = 133MHz, Pclk = 66MHz, Serial = CLKUART (SYNC Mode)

Board: SMDK6410

DRAM: 128 MB

Flash: 0 kB

NAND: 256 MB

In: serial

Out: serial

Err: serial

Hit any key to stop autoboot: 0

NAND read: device 0 offset 0x100000, size 0x300000

3145728 bytes read: OK

Boot with zImage

Starting kernel ...

Uncompressing Linux............................................................................................................................................. done, booting the kernel.

Linux version 2.6.28.6 (jkeqiang@ubuntu) (gcc version 4.2.2) #213 Sun May 9 23:07:10 PDT 2010

CPU: ARMv6-compatible processor [410fb766] revision 6 (ARMv7), cr=00c5387f

CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache

Machine: SMDK6410

Memory policy: ECC disabled, Data cache writeback

CPU S3C6410 (id 0x36410101)

S3C64XX: PLL settings, A=532000000, M=532000000, E=24000000

S3C64XX: HCLKx2=266000000, HCLK=133000000, PCLK=66500000

div1: 00000555

mout_apll: source is fout_apll (1), rate is 532000000

mout_epll: source is fout_epll (1), rate is 24000000

mout_mpll: source is mpll (1), rate is 532000000

mmc_bus: source is dout_mpll (1), rate is 44333333

usb-host-bus: source is mout_epll (0), rate is 24000000

uclk1: source is dout_mpll (1), rate is 66500000

spi-bus: source is mout_epll (0), rate is 24000000

audio-bus0: source is mout_epll (0), rate is 24000000

audio-bus1: source is mout_epll (0), rate is 24000000

audio-bus2: source is mout_epll (0), rate is 24000000

irda-bus: source is mout_epll (0), rate is 24000000

s3c64xx: 15728640 bytes SDRAM reserved for fimc at 0x505a3000

s3c64xx: 8388608 bytes SDRAM reserved for pp at 0x514a3000

s3c64xx: 8388608 bytes SDRAM reserved for tv at 0x51ca3000

s3c64xx: 6291456 bytes SDRAM reserved for mfc at 0x524a3000

s3c64xx: 8388608 bytes SDRAM reserved for jpeg at 0x52aa3000

s3c64xx: 8388608 bytes SDRAM reserved for cmm at 0x532a3000

Built 1 zonelists in Zone order, mobility grouping on. Total pages: 32512

Kernel command line: root=/dev/mtdblock2 rootfstype=cramfs console=ttySAC0,115200

PID hash table entries: 512 (order: 9, 2048 bytes)

Console: colour dummy device 80x30

s3c24xx_serial_init_ports: initialising ports=4...

console [ttySAC0] enabled

Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)

Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)

Memory: 128MB = 128MB total

Memory: 70784KB available (3908K code, 494K data, 272K init)

SLUB: Genslabs=12, HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1

Calibrating delay loop... 530.84 BogoMIPS (lpj=1327104)

Mount-cache hash table entries: 512

CPU: Testing write buffer coherency: ok

net_namespace: 316 bytes

NET: Registered protocol family 16

S3C6410: Initialising architecture

Total 32 DMA channels will be initialized.

SCSI subsystem initialized

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: 4096 (order: 3, 32768 bytes)

TCP bind hash table entries: 4096 (order: 4, 81920 bytes)

TCP: Hash tables configured (established 4096 bind 4096)

TCP reno registered

NET: Registered protocol family 1

NetWinder Floating Point Emulator V0.97 (double precision)

yaffs May 9 2010 18:05:41 Installing.

msgmni has been set to 138

alg: No test for stdrng (krng)

io scheduler noop registered

io scheduler anticipatory registered

io scheduler deadline registered

io scheduler cfq registered (default)

S3C_LCD clock got enabled :: 133.000 Mhz

LCD TYPE :: LTE480WV will be initialized

Window[0] - FB1: map_video_memory: clear ff000000:0007f800

FB1: map_video_memory: dma=57180000 cpu=ff000000 size=0007f800

Window[0] - FB2: map_video_memory: clear ff03fc00:0003fc00

FB2: map_video_memory: dma=571bfc00 cpu=ff03fc00 size=0003fc00

[DEBUG]logo_lines 34, vc->vc_bottom 34

Console: switching to colour frame buffer device 60x34

fb0: s3cfb frame buffer device

Window[1] - FB1: map_video_memory: clear ff080000:0007f800

FB1: map_video_memory: dma=57200000 cpu=ff080000 size=0007f800

Window[1] - FB2: map_video_memory: clear ff0bfc00:0003fc00

FB2: map_video_memory: dma=5723fc00 cpu=ff0bfc00 size=0003fc00

fb1: s3cfb frame buffer device

Window[2] - FB1: map_video_memory: clear ff100000:0003fc00

FB1: map_video_memory: dma=57140000 cpu=ff100000 size=0003fc00

fb2: s3cfb frame buffer device

Window[3] - FB1: map_video_memory: clear ff140000:0003fc00

FB1: map_video_memory: dma=57280000 cpu=ff140000 size=0003fc00

fb3: s3cfb frame buffer device

enter s3c6410_leds_init

leds initialized

s3c6400-uart.0: s3c2410_serial0 at MMIO 0x7f005000 (irq = 16) is a S3C6400/10

s3c6400-uart.1: s3c2410_serial1 at MMIO 0x7f005400 (irq = 20) is a S3C6400/10

s3c6400-uart.2: s3c2410_serial2 at MMIO 0x7f005800 (irq = 24) is a S3C6400/10

s3c6400-uart.3: s3c2410_serial3 at MMIO 0x7f005c00 (irq = 28) is a S3C6400/10

brd: module loaded

loop: module loaded

PPP generic driver version 2.4.2

dm9000 Ethernet Driver

eth%d: con201 Invalid ethernet MAC address. using default config, Please set using ifconfig

eth0: dm9000 at f7b00300,f7b00304 IRQ 108 MAC: 00:e0:4a:bc:15:e7

Linux video capture interface: v2.00

s3c-fimc: controller 0 registered successfully

s3c-fimc: controller 1 registered successfully

printk ov965x_init

s3c-fimc: info ov965x_init

S3C6410 TV encoder Driver init OK.

S3C6410 TV scaler Driver init OK.

s3c_rotator_probe called

s3c_rotator_probe success

s3c_g2d_probe called

s3c_g2d_probe Success

S3C G2D Init : Done

s3c_g3d version : 0x1050000

S3C G3D Init : Done

Driver 'sd' needs updating - please use bus_type methods

S3C NAND Driver is using software ECC.

NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)

Creating 4 MTD partitions on "NAND 256MiB 3,3V 8-bit":

0x00000000-0x00040000 : "Bootloader"

0x00040000-0x00400000 : "Kernel"

0x00400000-0x05400000 : "Rootfs"

0x05400000-0x10000000 : "File System"

Samsung SoC SPI Driver loaded for SPI-0

Max,Min-Speed [33250000, 129882]Hz

Irq=80 IOmem=[0x7f00bfff-0x7f00b000] DMA=[Rx-33, Tx-34]

Samsung SoC SPI Driver loaded for SPI-1

Max,Min-Speed [33250000, 129882]Hz

Irq=81 IOmem=[0x7f00cfff-0x7f00c000] DMA=[Rx-35, Tx-36]

ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver

s3c2410-ohci s3c2410-ohci: S3C24XX OHCI

s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1

s3c2410-ohci s3c2410-ohci: irq 79, io mem 0x74300000

usb usb1: configuration #1 chosen from 1 choice

hub 1-0:1.0: USB hub found

hub 1-0:1.0: 2 ports detected

Initializing USB Mass Storage driver...

usbcore: registered new interface driver usb-storage

USB Mass Storage support registered.

s3c-udc : version 15 March 2009 (DMA Mode)

mice: PS/2 mouse device common for all mice

gpio keys driver.

input: gpio-keys as /class/input/input0

S3C TouchScreen got loaded successfully : 12 bits

input: S3C TouchScreen as /class/input/input1

s3c2410_rtc: tick irq 34, alarm irq 92

s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling

s3c2410-rtc s3c2410-rtc: rtc core: registered s3c as rtc0

i2c /dev entries driver

s3c2440-i2c s3c2440-i2c: slave address 0x10

s3c2440-i2c s3c2440-i2c: bus frequency set to 377 KHz

[OV965X]ov965x_attach_adapter.

[CAM]s3c_fimc_register_camera,cam->id=0

parent clock for camera: 266.000 MHz, divisor: 11

[CAM]RESET CAM.[CAM]Reset and init reg!1cam->client=0

[CAM]Reset and init reg!1

[CAM]Reset and init reg!3

s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter

sdhci: Secure Digital Host Controller Interface driver

sdhci: Copyright(c) Pierre Ossman

s3c-sdhci s3c-sdhci.0: clock source 0: hsmmc (133000000 Hz)

s3c-sdhci s3c-sdhci.0: clock source 1: hsmmc (133000000 Hz)

s3c-sdhci s3c-sdhci.0: clock source 2: mmc_bus (44333333 Hz)

[SDHCI]to add external irq as a card detect signal......

[SDHCI]if (pdata->cfg_ext_cd)......

mmc0: SDHCI controller on samsung-hsmmc [s3c-sdhci.0] using ADMA

[SDHCI]request_irq......

sdhci: card inserted.

s3c-sdhci s3c-sdhci.1: clock source 0: hsmmc (133000000 Hz)

s3c-sdhci s3c-sdhci.1: clock source 1: hsmmc (133000000 Hz)

s3c-sdhci s3c-sdhci.1: clock source 2: mmc_bus (44333333 Hz)

[SDHCI]to add external irq as a card detect signal......

mmc1: SDHCI controller on samsung-hsmmc [s3c-sdhci.1] using ADMA

usbcore: registered new interface driver usbhid

usbhid: v2.6:USB HID core driver

Advanced Linux Sound Architecture Driver Version 1.0.18rc3.

ASoC version 0.13.2

WM9713/WM9714 SoC Audio Codec 0.15

playback: 1, capture : 1

asoc: AC97 HiFi <-> s3c64xx-ac97 mapping ok

[WM9713]Open speaker volume.

ALSA device list:

#0: SMDK6400 (WM9713)

TCP cubic registered

RPC: Registered udp transport module.

RPC: Registered tcp transport module.

VFP support v0.3: implementor 41 architecture 1 part 20 variant b rev 5

s3c2410-rtc s3c2410-rtc: setting system clock to 2000-01-04 22:07:28 UTC (947023648)

mtd->size = 5000000 blocks = 280

cheaking bad block...............

.................................................................................................................................................................................

bad block at 1620000

..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................VFS: Mounted root (cramfs filesystem) readonly.

Freeing init memory: 272K

skip bad block b1

*************************************

http://www.witech.com.cn

*************************************

mkdir: cannot create directory '/mnt/disk': File exists

yaffs: dev is 32505859 name is "mtdblock3"

yaffs: passed flags ""

yaffs: Attempting MTD mount on 31.3, "mtdblock3"

yaffs: restored from checkpoint

yaffs_read_super: isCheckpointed 1

Try to bring eth0 interface up......eth0: link down