{"id":1260,"date":"2014-01-06T06:45:08","date_gmt":"2014-01-05T21:45:08","guid":{"rendered":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/?p=1260"},"modified":"2014-02-03T06:26:12","modified_gmt":"2014-02-02T21:26:12","slug":"beaglebone-black-5","status":"publish","type":"post","link":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/2014\/01\/beaglebone-black-5\/","title":{"rendered":"BeagleBone Black \u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30cf\u30c3\u30af(5)Hacking BeagleBone Black, part 5"},"content":{"rendered":"

BeagleBone Black\u306bI2C\u30ad\u30e3\u30e9\u30af\u30bf\u6db2\u6676\u3092\u4ed8\u3051\u308b<\/p>\n

\"BBB-LCD02\"<\/a>

BBB\u306b\u53d6\u308a\u4ed8\u3051\u305fI2C\u6db2\u6676<\/p><\/div>\n

1. \u306f\u3058\u3081\u306b<\/h2>\n

\u6642\u8a08\u3068\u30bb\u30f3\u30b5\u304c\u4ed8\u304d\u307e\u3057\u305f\u306e\u3067\u3001\u8868\u793a\u7528\u306bLCD\u3092\u4ed8\u3051\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n

<\/p>\n

\u79cb\u6708\u96fb\u5b50\u3067\u5909\u63db\u57fa\u677f\u4ed8\u304d\u3067\u58f2\u3089\u308c\u3066\u3044\u308b8×2\u6587\u5b57\u306eI2C\u6db2\u6676\u3092\u9078\u629e\u3057\u307e\u3057\u305f\u3002<\/p>\n

\uff29\uff12\uff23\u63a5\u7d9a\u5c0f\u578b\uff2c\uff23\uff24\u30e2\u30b8\u30e5\u30fc\u30eb\u30d4\u30c3\u30c1\u5909\u63db\u30ad\u30c3\u30c8<\/a><\/p>\n

2. I2C\u6db2\u6676\u306e\u63a5\u7d9a\u65b9\u6cd5<\/h2>\n

I2C\u306a\u306e\u3067\u3001\u63a5\u7d9a\u306f\u7c21\u5358\u3067\u3059\u3002SCL\/ SDA\u3092\u6240\u5b9a\u306e\u7aef\u5b50\u306b\u7e4b\u3050\u3060\u3051\u3067\u3059\u3002<\/p>\n

\"Schematic<\/a>

Schematic of I2C LCD<\/p><\/div>\n

\u79cb\u6708\u306e\u57fa\u677f\u4e0a\u306b\u306f\u3001\u30d7\u30eb\u30a2\u30c3\u30d7\u62b5\u6297\u306e\u6709\u52b9\uff0f\u7121\u52b9\u306e\u30b8\u30e3\u30f3\u30d1\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

BBB\u5074\u3067\u30d7\u30eb\u30a2\u30c3\u30d7\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u30d7\u30eb\u30a2\u30c3\u30d7\u3057\u306a\u3044\u8a2d\u5b9a\u306b\u3057\u3066\u3044\u304d\u307e\u3059\u3002\uff08\u8cb7\u3063\u305f\u307e\u307e\u3067\u4f55\u3082\u3057\u306a\u3051\u308c\u3070\u30aa\u30fc\u30b1\u30fc\u3067\u3059\uff09<\/p>\n

\u57fa\u677f\u4e0a\u306eEthernet\u30b3\u30cd\u30af\u30bf\u306e\u4ed8\u8fd1\u304c\u7a7a\u3044\u3066\u3044\u305f\u306e\u3067\u3001\u305d\u3053\u306e\u914d\u7f6e\u3057\u307e\u3057\u305f\u3002\u65e2\u306b\u4e0b\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af\u306a\u3069\u306e\u914d\u7dda\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u30d4\u30c3\u30c1\u5909\u63db\u57fa\u677f\u306e\u88cf\u5074\u3068\u30b7\u30e7\u30fc\u30c8\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u7d76\u7e01\u3092\u3057\u3066\u4e0b\u3055\u3044\u3002\u9ad8\u3055\u3092\u62bc\u3055\u3048\u305f\u304b\u3063\u305f\u306e\u3067\u3001\u52d5\u4f5c\u78ba\u8a8d\u5f8c\u57fa\u677f\u4e0a\u306b\u30cf\u30f3\u30c0\u4ed8\u3051\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002<\/p>\n

3. \u52d5\u4f5c\u78ba\u8a8d<\/h2>\n

\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af\u3092\u5897\u8a2d\u3057\u305f\u3068\u304d\u3068\u540c\u69d8\u306b\u3001ic2detect\u30b3\u30de\u30f3\u30c9\u3067\u3001\u52d5\u4f5c\u306e\u78ba\u8a8d\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n

\r\n\r\nroot@beaglebone:~# i2cdetect -y -r 1\r\n     0\u00a0 1\u00a0 2\u00a0 3\u00a0 4\u00a0 5\u00a0 6\u00a0 7\u00a0 8\u00a0 9\u00a0 a\u00a0 b\u00a0 c\u00a0 d\u00a0 e\u00a0 f\r\n00:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 -- -- -- -- -- -- -- -- -- -- -- -- --\r\n10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\r\n20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\r\n30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3e --\r\n40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\r\n50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- --\r\n60: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --\r\n70: -- -- -- -- -- -- -- --\r\n\r\n<\/pre>\n
ID=3e\u756a\u3068\u3057\u3066I2C\u30d0\u30b9\u4e0a\u3067IC\u304c\u691c\u51fa\u3067\u304d\u308c\u3070\u6210\u529f\u3067\u3059\u3002<\/p>\n
\"BBB-LCD01\"<\/a>
LCD\u3092\u53d6\u308a\u4ed8\u3051\u305f\u30b1\u30fc\u30d7<\/p><\/div>\n
4. \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2<\/h2>\n
4.1 i2c-tools\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h3>\n
\u6db2\u6676\u306e\u5236\u5fa1\u306b\u306fi2cset\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002Angstrom\u4ed8\u5c5e\u306ei2cset\u30b3\u30de\u30f3\u30c9\u304c\u5c11\u3005\u53e4\u304f\u3001i\u30b3\u30de\u30f3\u30c9\uff08\u30d6\u30ed\u30c3\u30af\u66f8\u304d\u8fbc\u307f\uff09\u304c\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
\u3053\u306e\u305f\u3081\u3001\u81ea\u5206\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3057\u305f\u3002<\/p>\n
\r\n\r\n~# wget http:\/\/dl.lm-sensors.org\/i2c-tools\/releases\/i2c-tools-3.1.0.tar.bz2\r\nConnecting to dl.lm-sensors.org (160.45.254.26:80)\r\ni2c-tools-3.1.0.tar. 100% |*******************************| 66840\u00a0\u00a0 0:00:00 ETA\r\n~# tar xvfj i2c-tools-3.1.0.tar.bz2\r\n\uff08\u7565\uff09\r\n~# cd i2c-tools-3.1.0\r\n~\/i2c-tools-3.1.0# make ; make install\r\n\uff08\u7565\uff09\r\n\r\n<\/pre>\n
\/usr\/local\/sbin\u306bi2c-tools\u306e\u30b3\u30de\u30f3\u30c9\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059\u3002<\/p>\n
4.2 \u6642\u8a08\u8868\u793a<\/h3>\n
\u3068\u308a\u3042\u3048\u305a\u3001\u6db2\u6676\u4e0a\u306b\u6642\u523b\u3092\u8868\u793a\u3059\u308b\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f5c\u6210\u3057\u3066\u307f\u307e\u3057\u305f\u3002 i2c-time.sh<\/p>\n
\r\n\r\n#!\/bin\/bash\r\n\r\ni2cset=\/usr\/local\/sbin\/i2cset\r\nbus=1\r\nchip=0x3e\r\nLANG=C\r\n\r\n# initialize LCD display\r\n$i2cset -y $bus $chip 0 0x38 0x39 0x14 0x7f 0x5f 0x6c i\r\nsleep 0.5\r\n$i2cset -y $bus $chip 0 0x38 0x0d 0x01 i\r\nsleep 0.5\r\n\r\nwhile true ; do\r\n    MSG=`date +"%X" | perl -pe '$_=join" ",map{ord }split\/\/'`\r\n    $i2cset -y $bus $chip 0 0x01\r\n    $i2cset -y $bus $chip 0x40 $MSG i\r\n    sleep 1\r\ndone\r\n\r\n<\/pre>\n
i2c-time.sh\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n
\r\n~# chmod +x i2c-time.sh\r\n~# .\/i2c-time.sh\r\n<\/pre>\n
(\u7d9a\u304f\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
BeagleBone Black\u306bI2C\u30ad\u30e3\u30e9\u30af\u30bf\u6db2\u6676\u3092\u4ed8\u3051\u308b 1. \u306f\u3058\u3081\u306b \u6642\u8a08\u3068\u30bb\u30f3\u30b5\u304c\u4ed8\u304d\u307e\u3057\u305f\u306e\u3067\u3001\u8868\u793a\u7528\u306bLCD\u3092\u4ed8\u3051\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,7],"tags":[],"_links":{"self":[{"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts\/1260"}],"collection":[{"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/comments?post=1260"}],"version-history":[{"count":24,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts\/1260\/revisions"}],"predecessor-version":[{"id":1289,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts\/1260\/revisions\/1289"}],"wp:attachment":[{"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/media?parent=1260"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/categories?post=1260"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/tags?post=1260"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}