how to use FTDI chip TTL-232R-3V3, USB to TTL Serial Cable(3.3V)

I can use FTDI chip TTL-232R-3V3, USB to TTL Serial Cable(3.3V) with FreeBSD(FreeBSD-10-current)

1. load uftdi driver(SEE man uftdi)
  add below line into /boot/loader.conf
 uftdi_load="YES"

2. use cu command
 cu -l /dev/ttyU0 -s 115200

Serial Console for Raspberry PI

I created Serial Console for Raspberry PI without soldering.

1.  USB serial cables and jumper wire.

1.  FTDI chip TTL-232R-3V3, USB to TTL Serial Cable(3.3V)-1.8m (for example, http://akizukidenshi.com/catalog/g/gM-05840/)
2.  bread board jumper wire (female/male cables)(for example, http://akizukidenshi.com/catalog/g/gP-03471/)
3. Raspberry PI

2. pin assigment
   If you use another USB serial cable, please check your data sheet of your USB serial cable.

3. cabling sample

I use this Serial cable for FreeBSD/RaspberryPI project.

FreeBSD on Raspberry PI

- Create image file
  - related link http://kernelnomicon.org/ and latest build information(2012/Aug/6)
http://kernelnomicon.org/?p=164

  - I changed build script to
[NEW]
tar -x -v -z –uname root -C /mnt -f freebsd-uboot-sd.tar.gz

  - you need to run build script on root account.

- how to setup serial console(sorry in Japanese):
  http://chicklab.blog84.fc2.com/blog-entry-46.html
and  The layout of the Raspberry Pi GPIOs
 http://elinux.org/RPi_Low-level_peripherals

- TTL level converter
  USB <--> 3.3v RS-232C(in Japanese)
  TTL-232R-3V3 FTDI USB
  http://akizukidenshi.com/catalog/g/gM-05840/
  But pin assign is different from Raspberry PI. you need excange lines.
  I use bread board cable.

change display coding system to UTF-8 on FreeBSD

Now I use Prompt(ssh client for iPhone/iPad). However this ssh client software only support UTF-8
(not support SJIS and EUC).

I had to change terminal coding system to UTF-8.

I changed below configuration

1. .screenrc for GNU screen
encoding utf8
defencoding utf8
kanji utf8 utf8
defkanji utf8
terminfo xterm KJ=UTF-8
terminfo screen KJ=UTF-8

2. I execute screen with -U option

% screen -U

3. .cshrc for environment variable

now I removed LANG(noset LANG environment variable

4. use lv from jless(Because jless does not support UTF-8, I think)

alias less lv -Ou8

mlterm on FreeBSD 10-current(2012/5/9)

I upgraded FreeBSD 10-current(2012/5/9).
After upgrade, I could not execute mlterm(ports/x11/mlterm) on it.

Does some one have same problem?

error message is :(.mlterm/msg.log )
 Unable to start - open_screen_intern() failed.

June/4
I updated ports tree. I could solved this issue with latest mlterm(Updated to 3.1.2)
Thank you > nobutaka-san

プレスポ(プレシジョンスポーツ)のプロスケット交換

プロスケットを交換しました。
交換前の構成(標準品)
CS-HG30-8 11T-30T 368g

交換後
CS-HG50-9 12T-23T 215g

最初はチェーンを変更せずにCS-HG50-8 12-23 278gでも良いと考えていましたが、お店に行って持って比べたら軽さでCS-HG50-9を選んでしまいました!!

チェーン
Dura-Ace 9速用チェーンCN7701(9S 114)

設置方法情報
以下のページを参考にして交換しました。
９速プロスケット関連
CS-HG50-9R 12-23の装着例(FP2とプレスポ等のブログだお)
CS-HG50-9R 12-25の装着例(カワセミ自転車記［クロスバイク プレシジョンスポーツ編］)
リアディレーラ調製例(FP2とプレスポ等のブログだお)
リアディレーラ調製例(こちらの方が9速プロスケット時のより詳しい調製例/カワセミ自転車記［クロスバイク プレシジョンスポーツ編］)

8速プロスケット交換関連
CS-HG50-8s（13－23t）への交換(いつまでたっても未完成～プレスポゆるポタ日記～)
CS-HG50-8s(13T-23T)への交換(●つれづれ雑記●)


交換に使った機材
Dura ace グリス(お店で特に他のグリスが売っていなかったのでDura ace)
PARK TOOL FR-5G クロスケット外し用(SHIMANO製が売り切れで同等品)
SHIMANO TL-CN27 チェーンカッター (もっと安い物の予定が売り切れでSHIMANO純正)
YC-501A プロスケット外し(チェーンがついているもの、同種類ならば可)

買ったけど使っていない機材
MISSING LINK

自宅の機材
モンキースパナー(プロスケット外し時に利用)

今後の改造予定:
リアディレーラ(RD)をTIAGRA RD4600へ(装着例 http://kawa.naturum.ne.jp/e748215.html)、そしてタイヤ交換時により軽いホイールに交換しようと考えています。

ahci driver for FreeBSD

I bought HP ML110 G7 for my home server(FreeBSD-8.2-RELEASE). However I had two problems.
And finally I solved these problems with 8.3-RELEASE.

[PROBLEM1]
- FreeBSD-8.2-RELEASE and ahci driver could not probe Seagate ST3320620NS Barracuda ES SATA 3.0Gb/s 320-GB Hard Drive with ahci driver.

and finally I can use with FreeBSD-8.3-RELEASE.
ada1 at ahcich1 bus 0 scbus1 target 0 lun 0
ada1: ATA-7 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 305245MB (625142448 512 byte sectors: 16H 63S/T 16383C)

[PROBLEM2]
- FreeBSD-8.2-RELEASE and ahci driver could probe but some time hang-up with SAMSUNG HD154UI 1AG01113.

and finally I can use with FreeBSD-8.3-RELEASE.
ada2 at ahcich3 bus 0 scbus3 target 0 lun 0
ada2: ATA-7 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada2: Command Queueing enabled
ada2: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)

ahci0: port 0x1400-0x1407,0x1408-0x140b,0x1410-0x1417,0x1418-0x141b,0x1420-0x143f mem 0xfaca0000-0xfaca07ff irq 17 at device 31.2 on pci0
ahci0: [ITHREAD]
ahci0: AHCI v1.30 with 6 6Gbps ports, Port Multiplier supported
ahcich0: at channel 0 on ahci0
ahcich0: [ITHREAD]

error message
ahcich3: is 00000000 cs 00000008 ss 00000000 rs 00000008 tfd c0 serr 00000000
ahcich3: Timeout on slot 3
ahcich3: is 00000000 cs 00000fe0 ss 00000ff8 rs 00000ff8 tfd c0 serr 00000000
ahcich3: Timeout on slot 20
ahcich3: is 00000000 cs 3fe00000 ss 3ff00000 rs 3ff00000 tfd c0 serr 00000000
ahcich3: Timeout on slot 6
ahcich3: is 00000000 cs 0000ff00 ss 0000ffc0 rs 0000ffc0 tfd c0 serr 00000000
ahcich3: Timeout on slot 24
ahcich3: is 00000000 cs fc000003 ss ff000003 rs ff000003 tfd c0 serr 00000000