{"id":5469,"date":"2014-12-31T11:34:40","date_gmt":"2014-12-31T02:34:40","guid":{"rendered":"http:\/\/www.kayakersweb.org\/sueblog\/?p=5469"},"modified":"2015-01-22T12:02:12","modified_gmt":"2015-01-22T03:02:12","slug":"%ef%bc%99%e8%bb%b8%e3%82%bb%e3%83%b3%e3%82%b5%e3%83%bc%e3%83%a2%e3%82%b8%e3%83%a5%e3%83%bc%e3%83%ab-mpu-9250","status":"publish","type":"post","link":"https:\/\/www.kayakersweb.org\/sueblog\/2014\/12\/31\/5469\/","title":{"rendered":"\uff19\u8ef8\u30bb\u30f3\u30b5\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb MPU-9250\uff1a\u305d\u306e\uff11\uff08\u6e29\u5ea6\u6e2c\u5b9a\uff09"},"content":{"rendered":"

\u5012\u7acb\u632f\u5b50\u4f5c\u3063\u3066\u307f\u305f\u3044\u306a\u3068\u601d\u3063\u3066 9 \u8ef8\u30bb\u30f3\u30b5\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb MPU-9250<\/a> \u3092\u8cb7\u3063\u3066\u307f\u305f\u3002<\/p>\n

\"wpid-img_20141227_120453.jpg\"<\/a><\/p>\n

9 \u8ef8\u3068\u3044\u3063\u3066\u3082 3 \u8ef8\u306f\u52a0\u901f\u5ea6\u3001 3 \u8ef8\u306f\u89d2\u901f\u5ea6\u30013 \u8ef8\u306f\u30b3\u30f3\u30d1\u30b9\u3002\u3053\u308c\u304c3x3mm\u306e\uff11\u3064\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u53ce\u307e\u3063\u3066\u3044\u308b\u3002
\nI\/F \u306f I2C \u304b SPI\u3002\uff08\u3069\u3063\u3061\u3082\u3088\u304f\u3057\u3089\u306a\u3044\u3051\u3069\uff09
\n\u3057\u304b\u3082\u3001\u8907\u96d1\u306aMotionFusion\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u51e6\u7406\u53ef\u80fd\u306a\u30aa\u30f3\u30dc\u30fc\u30c9\u306eDigital Motion Processor\u2122\u307e\u3067\u3064\u3044\u3066\u308b\u3002\uff08\u66f8\u3044\u3066\u3066\u610f\u5473\u308f\u304b\u3089\u306a\u3044\u3051\u3069\u3002\uff09<\/p>\n

\u3053\u308c\u304c eBay \u3060\u3068\u9001\u6599\u8fbc\u307f\u3067\u5186\u5b89\u306e\u4eca\u3067\u3082 900\u5186\u3057\u306a\u3044\u91d1\u984d\u3067\u624b\u306b\u5165\u308b\u306e\u3067\u3064\u3044\u3046\u3063\u304b\u308a\u8cb7\u3063\u3066\u3057\u307e\u3063\u305f\u3002<\/p>\n

\u3053\u308c\u3092 Raspberry Pi \u306b\u7e4b\u3050\u3002\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u7d50\u7dda\u306e\u5c11\u306a\u3044I2C\u3067\u3002<\/p>\n

\u305d\u306e\u305f\u3081\u306b\u306f…\u307e\u305a\u3001blacklist \u8a2d\u5b9a\u3092\u5916\u3059\u305f\u3081\u306b \/etc\/modprobe.d\/raspi-blacklist.conf \u306b\u3042\u308b
\nblacklist i2c-bcm2708 \u3092\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3059\u308b\u3002
\n\u6b21\u306b\u3001\/etc\/modules\/etc\/modules \u306b
\n[code]
\ni2c-bcm2708
\ni2c-dev
\n[\/code]
\n\u3092\u8ffd\u52a0\u3059\u308b\u3002\u305d\u3057\u3066\u3068\u308a\u3042\u3048\u305a\u518d\u8d77\u52d5\u3002<\/p>\n

\u305d\u3057\u3066\u30c4\u30fc\u30eb\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3002
\n[code]
\npi@raspberrypi ~ $ sudo apt-get install i2c-tools
\n[\/code]<\/p>\n

[code]
\npi@raspberrypi ~ $ sudo i2cdetect -y 1
\n 0 1 2 3 4 5 6 7 8 9 a b c d e f
\n00: — — — — — — — — — — — — —
\n10: — — — — — — — — — — — UU — — — —
\n20: — — — — — — — — — — — — — — — —
\n30: — — — — — — — — — — — UU — — — —
\n40: — — — — — — — — — — — — — — — —
\n50: — — — — — — — — — — — — — — — —
\n60: — — — — — — — — 68 — — — — — — —
\n70: — — — — — — — —
\npi@raspberrypi ~ $
\n[\/code]<\/p>\n

\u3092\u3063\u3001UU \u3063\u3066\u306a\u3093\u3060\uff1f
\n\u300c\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u73fe\u5728\u30c9\u30e9\u30a4\u30d0\u30fc\u306b\u3088\u3063\u3066\u4f7f\u7528\u4e2d\u3067\u3042\u308b\u306e\u3067\u3001\u8abf\u67fb\u306f\u30b9\u30ad\u30c3\u30d7\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u3001\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u306b\u30c1\u30c3\u30d7\u304c\u3042\u308b\u3053\u3068\u3092\u5f37\u304f\u793a\u3057\u307e\u3059\u3002\u300d\u3089\u3057\u3044\u3002<\/p>\n

\u3063\u3066\u3053\u3068\u3067 MPU-9250 \u306f 0x68 \u3060\u3002<\/p>\n

\u300eMPU-9250 Register Map and Descriptions<\/a>\u300f\u898b\u306a\u304c\u3089\u3055\u3089\u306b\u3067\u3082\u3061\u3087\u3063\u3068\u3064\u3063\u3064\u304f\u3002<\/p>\n

\u6e29\u5ea6\u6e2c\u5b9a\u306f TEMP_OUT_H \u304c 65, TEMP_OUT_L \u304c 66 …
\n[code]
\npi@raspberrypi ~ $ sudo i2cget -y 1 0x68 65
\n0x03
\npi@raspberrypi ~ $ sudo i2cget -y 1 0x68 66
\n0x90
\n[\/code]
\n[code]
\nTEMP_degC = ((TEMP_OUT – RoomTemp_Offset) \/ Temp_Sensitivity) + 21degC
\n[\/code]
\n\u4eca\u56de TEMP_OUT \u306f 0x0390 \u3067\u3057\u3087\u3002RoomTemp_Offset \u3068 Temp_Sensitivity \u3063\u3066\u4f55\u3060\uff1f
\n\u300eMPU-9250 Product Specification<\/a>\u300f\u306e\u300e3.4.2. A.C. Electrical Characteristics\u300f\u306b\u5024\u304c\u3042\u3063\u305f\u3002
\nRoomTemp_Offset \u304c 0 \u3067\u3001Temp_Sensitivity \u304c 333.87 \uff1f
\n[code]
\nTEMP_degC = ((0x0390 – 0) \/ 333.87) + 21 = 23.7 \u2103
\n[\/code]
\n\u3053\u308c\u3060\u3051\u3058\u3083\u308f\u304b\u3089\u3093\u306a\u3002\u6c37\u3067\u51b7\u3084\u3059\u304b\u3002<\/p>\n

[code]
\npi@raspberrypi ~ $ sudo i2cget -y 1 0x68 65
\n0xee
\npi@raspberrypi ~ $ sudo i2cget -y 1 0x68 66
\n0x10
\n[\/code]
\n[code]
\nTEMP_degC = ((0xee10 – 0) \/ 333.87) + 21 = 7.2 \u2103
\n[\/code]
\n\u307e\u3041\u3001\u305d\u3093\u306a\u3082\u3093\u304b\u306a\u3063\u3066\u6c17\u304c\u3059\u308b\u5024\u304c\u5f97\u3089\u308c\u305f\u3002<\/p>\n

\u6c37\u3067\u51b7\u3084\u3059\u3068\u5c0f\u3055\u3044\u5024\u306b\u306a\u3063\u305f\u3063\u3066\u3053\u3068\u306f\u78ba\u304b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5012\u7acb\u632f\u5b50\u4f5c\u3063\u3066\u307f\u305f\u3044\u306a\u3068\u601d\u3063\u3066 9 \u8ef8\u30bb\u30f3\u30b5\u30fc\u30e2\u30b8\u30e5\u30fc\u30eb MPU-9250 \u3092\u8cb7\u3063\u3066\u307f\u305f\u3002 9 \u8ef8\u3068\u3044\u3063\u3066\u3082 3 \u8ef8\u306f\u52a0\u901f\u5ea6\u3001 3 \u8ef8\u306f\u89d2\u901f\u5ea6\u30013 \u8ef8\u306f\u30b3\u30f3\u30d1\u30b9\u3002\u3053\u308c\u304c3x3mm\u306e\uff11\u3064\u306e\u30d1\u30c3\u30b1\u30fc\u30b8\u306b\u53ce\u307e\u3063\u3066\u3044\u308b\u3002 I\/F […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[62,58,32,53],"tags":[],"class_list":["post-5469","post","type-post","status-publish","format-standard","hentry","category-mpu9250","category-raspberrypi","category-shopping","category-cpu"],"_links":{"self":[{"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/posts\/5469","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/comments?post=5469"}],"version-history":[{"count":15,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/posts\/5469\/revisions"}],"predecessor-version":[{"id":5602,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/posts\/5469\/revisions\/5602"}],"wp:attachment":[{"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/media?parent=5469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/categories?post=5469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kayakersweb.org\/sueblog\/wp-json\/wp\/v2\/tags?post=5469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}