{"id":1195,"date":"2014-01-03T06:48:38","date_gmt":"2014-01-02T21:48:38","guid":{"rendered":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/?p=1195"},"modified":"2014-02-03T06:25:22","modified_gmt":"2014-02-02T21:25:22","slug":"beaglebone-black-2","status":"publish","type":"post","link":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/2014\/01\/beaglebone-black-2\/","title":{"rendered":"BeagleBone Black \u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30cf\u30c3\u30af(2)Hacking BeagleBone Black, part 2"},"content":{"rendered":"

BeagleBone Black\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af(RTC)\u3092\u4ed8\u3051\u307e\u3059\u3002<\/p>\n

\"BB-RTC-PICT1\"<\/a>

BB-RTC-PICT1<\/p><\/div>\n

<\/p>\n

1. \u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af<\/h2>\n

BeagleBone Black\u306b\u306f\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af\uff08\u6642\u8a08\uff09\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u96fb\u6e90\u3092\u5207\u3063\u3066\u3057\u307e\u3046\u3068\u3001\u6642\u523b\u304c\u5206\u304b\u3089\u305a\u306b\u3001\u540c\u3058\u6642\u523b\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3057\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u666e\u901a\u306e\u30d1\u30bd\u30b3\u30f3\u3067\u306f\u96fb\u6c60\u3067\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3055\u308c\u305f\u6642\u8a08\u3092\u5185\u90e8\u306b\u6301\u3063\u3066\u304a\u308a\u3001\u8d77\u52d5\u6642\u306b\u3082\u6642\u523b\u304c\u5206\u304b\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002BBB\u306f\u30b3\u30b9\u30c8\u30c0\u30a6\u30f3\u306e\u305f\u3081\u304b\u3001\u3053\u306e\u4ed5\u7d44\u307f\u3092\u6301\u3063\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n

Unix(Linux)\u3067\u306f\u6642\u523b\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u53e4\u3044\u65b0\u3057\u3044\u3092\u5224\u65ad\u3057\u305f\u308a\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u7d76\u5bfe\u6642\u523b\u3092\u8a2d\u5b9a\u3057\u306a\u3044\u3068\u4f55\u304b\u3068\u4e0d\u4fbf\u3067\u3059\u3002<\/p>\n

\u305d\u3053\u3067\u3001BBB\u3067\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u3064\u306a\u304c\u3063\u3066\u3044\u308b\u5834\u5408\u306b\u306f\u3001ntp(Network Time Protocol)\u3092\u4f7f\u3063\u3066\u4ed6\u306e\u30db\u30b9\u30c8\u304b\u3089\u6642\u523b\u3092\u805e\u3044\u3066\u3001\u81ea\u5206\u306e\u5185\u90e8\u306e\u6642\u8a08\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n

\r\n\r\n BBB# \/usr\/bin\/ntpupdate pool.ntp.org\r\n\r\n<\/pre>\n
\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u3064\u306a\u304c\u306a\u3044\u5834\u5408\u306b\u306f\u6642\u523b\u3092\u77e5\u308b\u8853\u304c\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u3053\u3067\u4eca\u56de\u306f\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30cf\u30c3\u30af\u7b2c\u4e00\u5f3e\u3068\u3057\u3066BBB\u306bRTC\u3092\u63a5\u7d9a\u3057\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n
\u5143\u30cd\u30bf\u306f\u3001Adafruit\u306e\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb<\/a>Adding a Real Time Clock to BeagleBone Black<\/a>\u3067\u3059\u3002<\/p>\n
2. \u56de\u8def<\/h2>\n
\u56de\u8def\u56f3\u3092\u793a\u3057\u307e\u3059\u3002I2C\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092I2C\u30d0\u30b9\u306b\u3001\u6642\u8a08\u7528\u306e\u6c34\u6676\u3092\u5bfe\u5fdc\u3059\u308b\u7aef\u5b50\u306b\u3064\u306a\u3050\u3060\u3051\u3067\u3059\u3002<\/p>\n
\u96fb\u6e90\u3068\u3057\u3066\u306f\u672c\u4f53\u306e5V\u30e9\u30a4\u30f3\u304b\u3089\u5f15\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30d0\u30c3\u30c6\u30ea\u30fc\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u7528\u306b\u30dc\u30bf\u30f3\u96fb\u6c60\u3092\u7e4b\u304e\u307e\u3059\u3002<\/p>\n
\u307e\u305f\u3001\u56de\u8def\u56f3\u306b\u5165\u3063\u3066\u3044\u307e\u305b\u3093\u304c\u3001\u96fb\u6e90\u3068\u30b0\u30e9\u30f3\u30c9\u306e\u9593\u306b\u30d1\u30b9\u30b3\u30f3\u3092\u5165\u308c\u305f\u65b9\u304c\u826f\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n
\"Schematic<\/a>
Schematic of RTC<\/p><\/div>\n
\u30d1\u30fc\u30c4\u30ea\u30b9\u30c8\u3092\u793a\u3057\u307e\u3059\u3002\u5168\u3066\u306e\u30d1\u30fc\u30c4\u304c\u79cb\u6708\u3067\u63c3\u3044\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n\n\n
\u540d\u79f0<\/td>\n\u898f\u683c<\/td>\n\u6570\u91cf<\/td>\n\u5099\u8003<\/td>\n<\/tr>\n
\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af<\/td>\nDS1307+<\/td>\n1\u500b<\/td>\n\u901a\u8ca9\u30b3\u30fc\u30c9\u3000I-06949<\/td>\n<\/tr>\n
\u6c34\u6676\u767a\u632f\u5b50<\/td>\n32.768KHz<\/td>\n1\u500b<\/td>\n<\/td>\n<\/tr>\n
\u30dc\u30bf\u30f3\u96fb\u6c60<\/td>\n\uff23\uff32\uff12\uff10\uff13\uff12<\/td>\n1\u500b<\/td>\n<\/td>\n<\/tr>\n
\u30dc\u30bf\u30f3\u96fb\u6c60\u57fa\u677f\u53d6\u4ed8\u7528\u30db\u30eb\u30c0\u30fc<\/td>\n\uff23\uff32\uff12\uff10\uff13\uff12\u7528<\/td>\n1\u500b<\/td>\n\u901a\u8ca9\u30b3\u30fc\u30c9\u3000P-00706<\/td>\n<\/tr>\n
\u57fa\u677f<\/td>\n\uff22\uff45\uff41\uff47\uff4c\uff45\uff22\uff4f\uff4e\uff45\u30fb\u30e6\u30cb\u30d0\u30fc\u30b5\u30eb\u30d7\u30ed\u30c8\u30b1\u30fc\u30d7<\/td>\n1\u500b<\/td>\n<\/td>\n<\/tr>\n
\u30d4\u30f3\u30d8\u30c3\u30c0<\/td>\n2\u521746\u30d4\u30f3<\/td>\n2\u500b<\/td>\n<\/td>\n<\/tr>\n
\u30b3\u30f3\u30c7\u30f3\u30b5<\/td>\n\u7a4d\u5c64\u30bb\u30e9\u30df\u30c3\u30af 0.1uF<\/td>\n1\u500b<\/td>\n\u30d1\u30b9\u30b3\u30f3\u7528<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u4eca\u56de\u306f\u30b1\u30fc\u30b9\u306b\u5165\u308c\u308b\u90fd\u5408\u3067\u3001\u57fa\u677f\u306e\u88cf\u5074\u306b\u30d1\u30fc\u30c4\u304c\u3092\u914d\u7f6e\u3057\u307e\u3057\u305f\u3002\u672c\u4f53\u57fa\u677f\u306e\u30d1\u30fc\u30c4\u3001\u7279\u306bUSB\u30b3\u30cd\u30af\u30bf\u3068\u5e72\u6e09\u3057\u306a\u3044\u4f4d\u7f6e\u306bIC\u3068\u96fb\u6c60\u30db\u30eb\u30c0\u30fc\u3092\u53d6\u308a\u4ed8\u3051\u307e\u3059\u3002<\/p>\n
\u5b9f\u88c5\u9ad8\u3055\u306e\u90fd\u5408\u3067IC\u30bd\u30b1\u30c3\u30c8\u306f\u4f7f\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n
\u666e\u901a\u306f\u57fa\u677f\u306e\u8868\u306b\u30d1\u30fc\u30c4\u3092\u914d\u7f6e\u3059\u308b\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u5834\u5408\u306b\u306f\u3001\u672c\u4f53\u57fa\u677f\u3068\u306e\u90e8\u54c1\u306e\u5e72\u6e09\u306b\u3064\u3044\u3066\u6c17\u306b\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n
3. \u52d5\u4f5c\u78ba\u8a8d<\/h2>\n
\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306b\u5f93\u3063\u3066i2cdetect\u3067\u52d5\u4f5c\u306e\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002<\/p>\n
\r\n\r\nBBB# 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: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\r\n40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --\r\n50: -- -- -- -- UU UU UU UU -- -- -- -- -- -- -- --\r\n60: -- -- -- -- -- -- -- -- 68 -- -- -- -- -- -- --\r\n70: -- -- -- -- -- -- -- --\r\n\r\n<\/pre>\n
ID=68\u756a\u3068\u3057\u3066I2C\u30d0\u30b9\u4e0a\u3067IC\u304c\u691c\u51fa\u3067\u304d\u308c\u3070\u6210\u529f\u3067\u3059\u3002<\/p>\n
\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u7528\u306e\u96fb\u6c60\u3092\u5165\u308c\u3066\u304a\u304b\u306a\u3044\u3068RTC\u30c1\u30c3\u30d7\u306f\u52d5\u4f5c\u3057\u306a\u3044\u69d8\u3067\u3059\u3002\u5fc5\u305a\u3001\u57fa\u677f\u3092\u5dee\u3057\u8fbc\u3080\u524d\u306b\u96fb\u6c60\u3092\u5165\u308c\u3066\u304a\u3044\u3066\u4e0b\u3055\u3044\u3002<\/p>\n
4. \u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u8a2d\u5b9a<\/h2>\n
\u30bd\u30d5\u30c8\u30a6\u30a8\u30a2\u306e\u8a2d\u5b9a\u65b9\u6cd5\u306f\u3001\u30c1\u30e5\u30fc\u30c8\u30ea\u30a2\u30eb\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n
(1) I2C\u30c7\u30d0\u30a4\u30b9\u3068\u3057\u3066\u8a8d\u8b58\u3055\u305b\u308b\u3002<\/p>\n
\r\n\r\nBBB# mkdir \/usr\/share\/rtc_ds1307\r\n\r\n<\/pre>\n
(2) \u8d77\u52d5\u7528\u30b7\u30a7\u30eb\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f5c\u6210\u3000\/usr\/share\/rtc_ds1307\/clock_init.sh<\/p>\n
\r\necho ds1307 0x68 > \/sys\/class\/i2c-adapter\/i2c-1\/new_device\r\nhwclock -s -f \/dev\/rtc1\r\nhwclock -w\r\n\r\n<\/pre>\n
(3) \u30b5\u30fc\u30d3\u30b9\u767b\u9332\u7528\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3000\/lib\/systemd\/system\/rtc-ds1307.service<\/p>\n
\r\n[Unit]\r\nDescription=DS1307 RTC Service\r\n[Service]\r\nType=simple\r\nWorkingDirectory=\/usr\/share\/rtc_ds1307\r\nExecStart=\/bin\/bash clock_init.sh\r\nSyslogIdentifier=rtc_ds1307\r\n[Install]\r\nWantedBy=multi-user.target\r\n\r\n<\/pre>\n
(4) \u30b5\u30fc\u30d3\u30b9\u3092\u6709\u52b9\u306b\u3059\u308b<\/p>\n
\r\n\r\nBBB# systemctl enable rtc-ds1307.service\r\n\r\n<\/pre>\n
\u30ea\u30d6\u30fc\u30c8\u3057\u3066\u52d5\u4f5c\u306e\u78ba\u8a8d\u3092\u3057\u307e\u3059\u3002\u6642\u523b\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308c\u3070\u6210\u529f\u3067\u3059\u3002<\/p>\n
\"BB-RTC-PICT2\"<\/a>
BB-RTC-PICT2<\/p><\/div>\n
\uff08\u7d9a\u304f\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"
BeagleBone Black\u306b\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u30af\u30ed\u30c3\u30af(RTC)\u3092\u4ed8\u3051\u307e\u3059\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\/1195"}],"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=1195"}],"version-history":[{"count":32,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts\/1195\/revisions"}],"predecessor-version":[{"id":1328,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/posts\/1195\/revisions\/1328"}],"wp:attachment":[{"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/media?parent=1195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/categories?post=1195"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/morecatlab.akiba.coocan.jp\/lab\/index.php\/wp-json\/wp\/v2\/tags?post=1195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}