{"id":607,"date":"2013-02-28T09:21:16","date_gmt":"2013-02-28T00:21:16","guid":{"rendered":"http:\/\/leaqua.mulple.com\/?p=607"},"modified":"2018-03-15T10:38:10","modified_gmt":"2018-03-15T01:38:10","slug":"%ec%95%84%eb%91%90%ec%9d%b4%eb%85%b8%ec%99%80-%eb%9d%bc%ec%a6%88%eb%b2%a0%eb%a6%ac%ed%8c%8c%ec%9d%b4%ec%9d%98-uartserial-%ed%86%b5%ec%8b%a0","status":"publish","type":"post","link":"https:\/\/leaqua.mulple.com\/?p=607","title":{"rendered":"\uc544\ub450\uc774\ub178\uc640 \ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc758 UART(serial) \ud1b5\uc2e0"},"content":{"rendered":"

\ub77c\uc988\ubca0\ub9ac\ud30c\uc774\uc640\u00a0 \uc544\ub450\uc774\ub178 \uc0ac\uc774\uc758 \ud1b5\uc2e0\uc5d0\ub294 SPI, I2C , UART \ub4f1\uc744 \uc0ac\uc6a9\ud560\uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

\uadf8\uc911\uc5d0 \uc81c\uc77c \ub9cc\ub9cc\ud55c? UART(Serial) \uc744 \ud14c\uc2a4\ud2b8 \ud574\ubcf4\uc558\uc2b5\ub2c8\ub2e4.<\/p>\n

\uac19\uc740 \uc804\uc555\uc758 IO\ud540\uc744 \uc0ac\uc6a9\ud558\uba74 \ubc14\ub85c \uacb0\uc120\ud574\uc11c \uc0ac\uc6a9\ud558\uba74 \uac04\ub2e8\ud574 \uc9c0\uaca0\uc9c0\ub9cc \uc544\ub450\uc774\ub178\uc758 \uc785\ucd9c\ub825 \ud540 \uc804\uc555 5V \uc640 \ub77c\uc988\ubca0\ub9ac\ud30c\uc774\uc758 GPIO \uc758 \uc785\ucd9c\ub825 \ud540\uc804\uc555 3.3V \uc758 \ucc28\uc774 \ub54c\ubb38\uc5d0 \uc9c1\uc811\uc801\uc778 \uacb0\uc120\uc740 \ubb38\uc81c\uac00 \uc788\uc5b4\uc11c \ud68c\ub85c\uad6c\uc131\uc774 \ubd88\uac00\ud53c \ud574\uc9d1\ub2c8\ub2e4.<\/p>\n

UART \ud1b5\uc2e0\ud558\ub294 \ud68c\ub85c\uc758 \uad6c\uc131\uc5d0\ub3c4 \uc5ec\ub7ec\uac00\uc9c0\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

MOSFET \uacfc \uc800\ud56d\uc73c\ub85c \uad6c\uc131\ub418\ub294 \ubc29\ubc95<\/a>\u00a0\uacfc \uc544\ub450\uc774\ub178\uc640 \ub77c\uc988\ubca0\ub9ac\ud30c\uc774 \uc0ac\uc774\ub97c USB\ucf00\uc774\ube14\ub85c \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95\u00a0\uadf8\ub9ac\uace0\u00a0 \ub192\uc740 \ub808\ubca8\uc758 Logic \uc2e0\ud638\ub97c\u00a0\ub0ae\uc740 \ub808\ubca8\uc758 Logic\uc73c\ub85c \ubc14\uafd4\uc8fc\ub294 Logic IC\ub97c \uc0ac\uc6a9 \ud558\ub294 \ubc29\ubc95\ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

USB\ucf00\uc774\ube14\uc740 \ub530\ub85c \uc0ac\uc6a9\ud574\uc57c \ud558\ubbc0\ub85c \uc81c\uc678\ud558\uace0 \uac00\uaca9\uba74\uc774\ub098 \ud68c\ub85c\uad6c\uc131\uc774 \uc870\uae08\uc774\ub098\ub9c8 \ub2e8\uc21c\ud574 \uc9c0\ub294 Logic IC\ub97c \uc0ac\uc6a9 \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n

\uc81c\uac00 \uc0ac\uc6a9\ud55c Logic IC \ub294 \uad6d\ub0b4\uc1fc\ud551\ubab0 \ub4f1\uc5d0\uc11c \uad6c\uc785\ud558\uae30 \uc26c\uc6b4 74HC4050 \uc785\ub2c8\ub2e4. 74HC4049 \ub97c \uc0ac\uc6a9\ud574\ub3c4 \ubb34\uad00 \ud569\ub2c8\ub2e4.<\/p>\n

 <\/p>\n

\ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc758 UART \uc124\uc815 \uc218\uc815<\/h3>\n

\ub77c\uc988\ubca0\ub9ac \ud30c\uc774\ub294 \uae30\ubcf8\uc801\uc73c\ub85c 115200 \uc758 uart\ub85c \ucf58\uc194\uc5d0 \uc811\uc18d \ud558\ub3c4\ub85d \ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc544\ub450\uc774\ub178\uc640\u00a0 minicom\ub4f1 \uc744 \uc0ac\uc6a9\ud558\uc5ec \uc2dc\ub9ac\uc5bc\uc5d0 \ubc14\ub85c \uc5f0\uacb0\ud558\uac8c \ub418\uba74 \uc815\uc0c1\uc801\uc73c\ub85c \uc791\ub3d9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/p>\n

\/boot\/cmdline.txt\u00a0 \ud30c\uc77c\uacfc\u00a0 \/etc\/inittab \uc744 \uc218\uc815\ud558\uc5ec \ucf58\uc194\uc5ed\ud560\uc744 \uc81c\uac70\ud558\uc5ec \uc2dc\ub9ac\uc5bc \uc5f0\uacb0\ub85c\ub9cc \uc791\ub3d9\ud558\ub3c4\ub85d \uc218\uc815\ud574\uc904 \ud544\uc694\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

 <\/p>\n

\uc6b0\uc120 cmdline.txt \ub97c \uc218\uc815\ud569\ub2c8\ub2e4.<\/p>\n

$ sudo nano \/boot\/cmdline.txt<\/pre>\n
\ub2e4\uc74c \ub0b4\uc6a9\uc744 \ucc3e\uc544\uc11c \ubd89\uc740 \uae00\uc528 \ubd80\ubd84\uc744 \uc81c\uac70 \ud569\ub2c8\ub2e4.<\/p>\n
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200<\/span> <\/em><\/span>console=tty1 root=\/dev\/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait<\/p>\n
dwc_otg.lpm_enable=0 console=tty1 root=\/dev\/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait<\/pre>\n
 <\/p>\n
\ub2e4\uc74c\uc73c\ub85c inittab \uc744 \uc218\uc815\ud569\ub2c8\ub2e4.<\/p>\n
$ sudo nano \/etc\/inittab<\/pre>\n
T0:23:respawn:\/sbin\/getty -L ttyAMA0 115200 vt100 \ub97c \ucc3e\uc544\uc11c \uc8fc\uc11d\ucc98\ub9ac\ub97c \ud574\uc8fc\uba74 \ub429\ub2c8\ub2e4.<\/p>\n
#T0:23:respawn:\/sbin\/getty -L ttyAMA0 115200 vt100<\/pre>\n
\uc218\uc815 \ud6c4 \ub9ac\ubd80\ud305\uc744 \ud574\uc8fc\uba74 \ucf58\uc194\uc5ed\ud560\uc744 \ub9c9\uc544\uc8fc\ub294 \uc791\uc5c5\uc740\ub05d\uc774 \ub0a9\ub2c8\ub2e4.<\/p>\n
 <\/p>\n
\ud68c\ub85c\uad6c\uc131<\/h3>\n
\ud68c\ub85c\uc758 \uad6c\uc131\uc740 \uc544\ub798 \uadf8\ub9bc\uacfc \uac19\uc2b5\ub2c8\ub2e4. \uadf8\ub9bc\uc744 \ud074\ub9ad\ud574\uc11c \ud06c\uac8c \ubcf4\uac70\ub098 \uadf8\ub9bc \uc544\ub798 \ucca8\ubd80\ub41c PDF\ub97c \ubcf4\uac70\ub098 \uc544\ubb34\uac70\ub098 OK \uc785\ub2c8\ub2e4.<\/p>\n
\"74HC4050_bb\"<\/a><\/p>\n
\ud68c\ub85c\ub3c4 PDF \ud30c\uc77c \ub2e4\uc6b4 : \u00a074HC4050_schem<\/a><\/p>\n
\ube0c\ub808\ub4dc \ubcf4\ub4dc \uad6c\uc131 PDF \ud30c\uc77c \ub2e4\uc6b4 : 74HC4050_bb<\/a><\/p>\n
4050 IC\uc758 2\ubc88\ud540 \uacfc 5\ubc88\ud540\uc744 \uc544\ub450\uc774\ub178\uc758 TX, RX \ud540\uc774 \uc544\ub2cc D2 , D3\ub85c \uc5f0\uacb0\ud55c \uac83\uc740 \ud14c\uc2a4\ud2b8\uc2dc PC\uc640 \uc2dc\ub9ac\uc5bc\u00a0 \ud1b5\uc2e0\uc744 \ud558\uae30 \uc704\ud574\uc11c \uc774\uace0 4050 IC\uc640\uc758 \ud1b5\uc2e0\uc740 SoftwareSerial \uc744 \ud1b5\ud574\uc11c \uc774\ub8e8\uc5b4 \uc9c0\uac8c \ub429\ub2c8\ub2e4.<\/p>\n
\ube75\ub450\uc774\ub178\uc5d0 \uc5f0\uacb0<\/strong><\/p>\n
\"\uc0ac\uc9c4\"<\/a><\/p>\n
\uc544\ub450\uc774\ub178 \ucf54\ub4dc<\/h3>\n
\/*\r\n \uc544\ub450\uc774\ub178\uc640 \ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc758 UART \uc5f0\uacb0\r\n \uc544\ub450\uc774\ub178 : SoftSerial\r\n \ub77c\uc988\ubca0\ub9ac\ud30c\uc774 : GPIO UART\r\n*\/\r\n\r\n#include \r\n\r\nSoftwareSerial mySerial(2, 3); \/\/ RX, TX\r\n\r\nvoid setup()  \r\n{\r\n  Serial.begin(9600);\r\n  Serial.println(\"Start UART test\");  \/\/ PC\uc758 \uc2dc\ub9ac\uc5bc \ubaa8\ub2c8\ud130\uc5d0 \ud45c\uc2dc\ud569\ub2c8\ub2e4.\r\n  mySerial.begin(9600); \/\/\uc18c\ud504\ud2b8 \uc2dc\ub9ac\uc5bc\ub85c \ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc640 \ud1b5\uc2e0\ud558\uac8c \ub429\ub2c8\ub2e4.\r\n}\r\n\r\nvoid loop() {\r\n  \/\/ \ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc5d0\uc11c \ub118\uc5b4\uc628 \ub370\uc774\ud130\uac00 \uc788\uc73c\uba74 PC\ub85c \ub118\uaca8\uc90d\ub2c8\ub2e4.\r\n  if (mySerial.available())\r\n    Serial.write(mySerial.read());\r\n  \/\/ PC\uc5d0\uc11c \ub118\uc5b4\uc628 \ub370\uc774\ud130\uac00 \uc788\uc73c\uba74 \ub77c\uc988\ubca0\ub9ac\ud30c\uc774\ub85c \ub118\uaca8\uc90d\ub2c8\ub2e4.\r\n  if (Serial.available())\r\n    mySerial.write(Serial.read());\r\n}<\/pre>\n
\uc704\uc758 \uc2a4\ucf00\uce58\ub97c \uc5c5\ub85c\ub4dc \ud569\ub2c8\ub2e4.<\/p>\n
 <\/p>\n
minicom \uc124\uce58 \/ \uc791\ub3d9 \ud14c\uc2a4\ud2b8<\/h3>\n
\uc2dc\ub9ac\uc5bc \ud1b5\uc2e0\uc5d0 \ub9ce\uc774 \uc0ac\uc6a9\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc778 minicom \uc73c\ub85c \uc791\ub3d9\uc744 \ud14c\uc2a4\ud2b8 \ud574\ubd05\ub2c8\ub2e4.<\/p>\n
$ sudo apt-get install minicom<\/pre>\n
\uc704\uc640 \uac19\uc774\u00a0\uc124\uce58\ud558\uace0<\/p>\n
$ minicom -b 9600 -o -D \/dev\/ttyAMA0<\/pre>\n
\uc73c\ub85c \uc2e4\ud589\ud569\ub2c8\ub2e4.<\/p>\n
\uc2e4\ud589\uc911\uc5d0 \uc885\ub8cc\ub294 ctrl-a \ub204\ub974\uace0 x \ub204\ub974\uba74 \ub429\ub2c8\ub2e4.<\/p>\n
 <\/p>\n
\uc544\ub798\ub294 \uc544\ub450\uc774\ub178 IDE \uc640 \ub77c\uc988\ubca0\ub9ac\ud30c\uc774\uc5d0\uc11c \uc2e4\ud589\uc911\uc778 minicom \uc758 \ud654\uba74\uc785\ub2c8\ub2e4. \uc591\ucabd \ubaa8\ub450 Text \ub97c \uc8fc\uace0 \ubc1b\uae30\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \uc774\ub8e8\uc5b4 \uc9d1\ub2c8\ub2e4.<\/p>\n
\"minicom2\"<\/a><\/p>\n
\"minicom3\"<\/a><\/p>\n
<\/h3>\n
\ub77c\uc988\ubca0\ub9ac \ud30c\uc774\uc5d0 Python \uc6a9 Serial \ub77c\uc774\ube0c\ub7ec\ub9ac \uc124\uce58<\/h3>\n
GCC \ub098 minicom \uc744 \uc0ac\uc6a9\ud560 \uacbd\uc6b0\uc5d4 \ud544\uc694\uac00 \uc5c6\ub294 \uacfc\uc815\uc785\ub2c8\ub2e4. Python \uc73c\ub85c \uc544\ub450\uc774\ub178\uc640 \ud1b5\uc2e0\ud560 \uacbd\uc6b0 \ud544\uc694\ud569\ub2c8\ub2e4.<\/p>\n
$ sudo apt-get install python-serial<\/pre>\n
\uc640 \uac19\uc774 \uc124\uce58 \ud569\ub2c8\ub2e4.<\/p>\n
\ud328\ud0a4\uc9c0 \uc124\uce58\ub97c \uc6d0\ud558\uc9c0 \uc54a\ub294\uacbd\uc6b0\uc5d4 http:\/\/pyserial.sourceforge.net\/<\/a>\u00a0\uc5d0\uc11c \ucd5c\uc2e0 \ubc84\uc804\ub4e4 \ub2e4\uc6b4 \ubc1b\uc544\uc11c \ub77c\uc988\ubca0\ub9ac\ud30c\uc774\uc758 \uacc4\uc815\uc5d0 \ubcf5\uc0ac\ud55c\ub4a4 \uc258\uc5d0\uc11c \ub2e4\uc74c\uc744 \uc9c4\ud589\ud569\ub2c8\ub2e4.<\/p>\n
$ tar zxf pyserial-2.6\r\n$ cd pyserial-2.6\r\n$ sudo python setup.py install<\/pre>\n
\uc124\uce58\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \uc774\ub8e8\uc5b4 \uc9c0\uace0 \ud14c\uc2a4\ud2b8\uc5d0 \ub4e4\uc5b4\uac11\ub2c8\ub2e4.<\/p>\n
$ sudo python\r\n\r\n>>> import serial\r\n>>> ser = serial.Serial(\"\/dev\/ttyAMA0\",9600)  # \uc2dc\ub9ac\uc5bc \ud3ec\ud2b8\ub97c \uc5f4\uace0\r\n>>> print ser.portstr       # \uc2dc\ub9ac\uc5bc \ud3ec\ud2b8\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \uc5f4\ub838\ub294\uc9c0 \ud655\uc778\r\n>>> ser.write(\"hello\")      # \uae00\uc790\ub97c \uc368 \ubd05\ub2c8\ub2e4.\r\n>>> ser.close()             # \uc2dc\ub9ac\uc5bc \ud3ec\ud2b8 \ub2eb\uace0..<\/pre>\n
 <\/p>\n
\uc2e4\ud589 \ud654\uba74\uc785\ub2c8\ub2e4. \uc798\ub418\ub294\uad70\uc694 \ud83d\ude42<\/p>\n
\"python\"<\/a><\/h3>\n
 <\/p>\n
\uc774\uc0c1\uc73c\ub85c Arduino \uc640 Raspberry pi \uc758 UART \ud1b5\uc2e0 \uad00\ub828 \ud3ec\uc2a4\ud2b8\ub97c \ub9c8\uce69\ub2c8\ub2e4.<\/p>\n
 <\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\ub77c\uc988\ubca0\ub9ac\ud30c\uc774\uc640\u00a0 \uc544\ub450\uc774\ub178 \uc0ac\uc774\uc758 \ud1b5\uc2e0\uc5d0\ub294 SPI, I2C , UART \ub4f1\uc744 \uc0ac\uc6a9\ud560\uc218 \uc788\uc2b5\ub2c8\ub2e4.
\n\uadf8\uc911\uc5d0 \uc81c\uc77c \ub9cc\ub9cc\ud55c? UART(Serial) \uc744 \ud14c\uc2a4\ud2b8 \ud574\ubcf4\uc558\uc2b5\ub2c8\ub2e4.
\n\uac19\uc740 \uc804\uc555\uc758 IO\ud540\uc744 \uc0ac\uc6a9\ud558\uba74 \ubc14\ub85c \uacb0\uc120\ud574\uc11c \uc0ac\uc6a9\ud558\uba74 \uac04\ub2e8\ud574 \uc9c0\uaca0\uc9c0\ub9cc \uc544\ub450\uc774\ub178\uc758 \uc785\ucd9c\ub825 \ud540 \uc804\uc555 5V […]<\/p>\n","protected":false},"author":1,"featured_media":624,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"categories":[5],"tags":[17,82,80,81,57,67],"_links":{"self":[{"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/posts\/607"}],"collection":[{"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=607"}],"version-history":[{"count":26,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/posts\/607\/revisions"}],"predecessor-version":[{"id":951,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/posts\/607\/revisions\/951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=\/wp\/v2\/media\/624"}],"wp:attachment":[{"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=607"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=607"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/leaqua.mulple.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=607"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}