{"id":710,"date":"2016-11-24T10:48:51","date_gmt":"2016-11-24T19:48:51","guid":{"rendered":"\/blog\/?p=710"},"modified":"2023-09-21T09:37:54","modified_gmt":"2023-09-21T00:37:54","slug":"%ec%95%84%eb%91%90%ec%9d%b4%eb%85%b8-%eb%a9%94%eb%aa%a8%eb%a6%ac-%eb%b6%84%ec%84%9d%ed%95%98%ea%b8%b0","status":"publish","type":"post","link":"https:\/\/hasu0707.duckdns.org\/blog\/?p=710","title":{"rendered":"\uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac \ubd84\uc11d\ud558\uae30"},"content":{"rendered":"\n\ucd9c\ucc98 : http:\/\/www.hardcopyworld.com\/gnuboard5\/bbs\/board.php?bo_table=lecture_pract&wr_id=35<\/a>


\uc544\ub450\uc774\ub178\uc640 \uc13c\uc11c\ub97c \ub2a5\uc219\ud558\uac8c \ub2e4\ub8e8\uace0 \uac01\uc885 \ud1b5\uc2e0 \ubaa8\ub4c8\uacfc \ub514\uc2a4\ud50c\ub808\uc774 \ubaa8\ub4c8\uc744 \ud65c\uc6a9\ud558\uae30 \uc2dc\uc791\ud558\ub294 \uc911\uae09 \uc720\uc800\ub77c\uba74 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub97c \ud55c\ubc88\ucbe4 \uacaa\uae30 \ub9c8\ub828\uc785\ub2c8\ub2e4. \ubd88\uacfc 2KB\uc758 SRAM\uc744 \uac00\uc9c4 \uc544\ub450\uc774\ub178\uc5d0\uc11c\ub294 \uba54\ubaa8\ub9ac \ubb38\uc81c\uc5d0\uc11c \uc790\uc720\ub85c\uc6b8 \uc218\uac00 \uc5c6\ub294\ub370 \ubc18\ud574 \uc774\ub97c \ub514\ubc84\uae45\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc774 \uc544\ub450\uc774\ub178\uc5d0\uc11c\ub294 \ub9c8\ub545\ud788 \uc5c6\uc2b5\ub2c8\ub2e4. (PC \ud639\uc740 \ub2e4\ub978 \uae30\uae30, \ud50c\ub7ab\ud3fc\uc5d0\uc11c\ub3c4 \uba54\ubaa8\ub9ac \ubb38\uc81c\uac00 \uace8\uce58\uac70\ub9ac\uc778 \uc810\uc740 \uac19\uc9c0\ub9cc...)

\uc720\uc77c\ud55c \ub514\ubc84\uae45 \ubc29\ubc95\uc778 Serial \ud568\uc218\ub97c \uc774\uc6a9\ud55c \ub514\ubc84\uadf8 \uba54\uc2dc\uc9c0 \ucd9c\ub825\ub3c4 Serial \ud1b5\uc2e0\uc744 \ud65c\uc131\ud654 \ud558\ub294 \uacfc\uc815\uc5d0\uc11c \ud1b5\uc2e0\uc6a9 \ubc84\ud37c\ub97c \uc0dd\uc131\ud558\uae30 \ub54c\ubb38\uc5d0 \uba54\ubaa8\ub9ac\ub97c \uc7a1\uc544\uba39\uc5b4 \ubc84\ub9bd\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub294 \uba54\ubaa8\ub9ac\uc5d0 \ub300\ud574 \ucda9\ubd84\ud788 \uc774\ud574\ud558\uace0 \ubbf8\ub9ac \uc870\uc2ec\ud558\ub294 \uac83\uc774 \ucd5c\uc120\uc774\ub77c \ud558\uaca0\uc2b5\ub2c8\ub2e4.

\uadf8\ub798\uc11c \uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac \uad00\ub828\ub41c \ud574\uc678 \uc790\ub8cc\ub4e4\uc744 \uc218\uc9d1\ud574\uc11c \uc815\ub9ac\ud574 \ubd24\uc2b5\ub2c8\ub2e4. \uc544\ub798 \ub9c1\ud06c\uac00 \uc6d0\ubb38\uc785\ub2c8\ub2e4. \uc6d0\ubb38\uc758 \uc8fc\uc694 \ub0b4\uc6a9\uc744 \uc815\ub9ac\ud588\uc9c0\ub9cc \uc81c\uac00 \ucca8\uc0ad\uc744 \ud588\uc2b5\ub2c8\ub2e4.

https:\/\/learn.adafruit.com\/memories-of-an-arduino\/you-know-you-have-a-memory-problem-when-dot-dot-dot<\/a>





\uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac \ubd84\uc11d<\/strong>


\uc544\ub450\uc774\ub178 \uc2a4\ucf00\uce58 \uc0ac\uc774\uc988\uac00 \ub108\ubb34 \ucee4\uc9c0\uba74 \uc5c5\ub85c\ub4dc \ud560 \ub54c \uc544\ub798\uc640 \uac19\uc740 \uc5d0\ub7ec \uba54\uc2dc\uc9c0\uac00 \ubc1c\uc0dd\ud558\ub294 \uacbd\uc6b0\uac00 \uc788\uc2b5\ub2c8\ub2e4.

learn_arduino_Too_Big

\ud558\uc9c0\ub9cc \uc774\ub7f0 \uc5d0\ub7ec\ub294 \uc5c5\ub85c\ub4dc \ud560 \ub54c \ubc1c\uc0dd\ud558\ubbc0\ub85c \uc624\ud788\ub824 \ub2e4\ud589\uc778 \uacbd\uc6b0\ub77c\uace0 \ud560\uae4c\uc694. \ub9ce\uc740 \uacbd\uc6b0\ub294 \uc2a4\ucf00\uce58\uac00 \ubb38\uc81c\uc5c6\uc774 \uc5c5\ub85c\ub4dc\ub418\uc9c0\ub9cc \ub3d9\uc791\ud560 \ub54c \uc774\uc0c1\ud55c \ud604\uc0c1\uc744 \ubcf4\uc778\ub2e4\ub358\uc9c0 \uc8fd\uc5b4\ubc84\ub9ac\uac8c \ub429\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uc774\ub7f0 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud588\uc744 \ub54c\ub294 \uc5b4\ub514\uac00 \ubb38\uc81c\uc778\uc9c0 \uc54c\uae30 \ud798\ub4e0 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.

\uba3c\uc800 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub294 \uc5b4\ub5bb\uac8c \ud655\uc778\ud560 \uc218 \uc788\ub294\uc9c0 \ubd80\ud130 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc2a4\ucf00\uce58\uac00 \ubb38\uc81c\uc5c6\uc774 \uc5c5\ub85c\ub4dc \ub418\ub354\ub77c\ub3c4 \uc544\ub798\uc640 \uac19\uc740 \uc791\uc5c5\uc744 \ud55c \ub4a4 \ubb38\uc81c\uac00 \ubc1c\uc0dd\ud55c\ub2e4\uba74 \uba54\ubaa8\ub9ac \ubb38\uc81c\uc77c \uac00\ub2a5\uc131\uc774 \ud07d\ub2c8\ub2e4.

\ud558\ub098 \uc774\uc0c1\uc758 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c include \ud55c \ub4a4
\uba87 \uac1c\uc758 LED pixel\uc744 \ucd94\uac00\ud55c \ub4a4 (LED \ub514\uc2a4\ud50c\ub808\uc774\uc758 \uac01 \ud53d\uc140\uc744 \ub9d0\ud568)
SD \uce74\ub4dc\uc5d0\uc11c \ud30c\uc77c\uc744 \uc5f0 \ub4a4
\ub514\uc2a4\ud50c\ub808\uc774\ub97c \ucd08\uae30\ud654 \ud55c \ub4a4
\ub2e4\ub978 \uc2a4\ucf00\uce58\uc640 \ud569\uce5c \ub4a4
\uc0c8\ub85c\uc6b4 \ud568\uc218\ub97c \ucd94\uac00\ud55c \ub4a4
\uc774\ub7f0 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc544\ub450\uc774\ub178\uc758 \uba54\ubaa8\ub9ac \ub3d9\uc791 \ubc29\uc2dd\ubd80\ud130 \uc774\ud574\ud574\uc57c \ud569\ub2c8\ub2e4.





HARVARD VS PRINCETON<\/strong>


\ucef4\ud4e8\ud130 \ubc1c\uc804\uc758 \ucd08\uae30 \uc2dc\uc808\uc5d0 \ub450 \uac1c\uc758 \uc0c1\ubc18\ub41c \ud504\ub85c\uc138\uc11c\/\uba54\ubaa8\ub9ac \uc544\ud0a4\ud14d\ucc98\uac00 \ubc1c\ud45c\ub429\ub2c8\ub2e4.

learn_arduino_Harvard_vs_Princeton

\uc720\uba85\ud55c ENIAC\uc744 \uc704\ud574 \ub9cc\ub4e4\uc5b4\uc9c4 \ud3f0 \ub178\uc774\ub9cc(Von Neumann \ub610\ub294 Princeton) \uc544\ud0a4\ud14d\ucc98\ub294 (\ucef4\ud30c\uc77c \ub41c) \ud504\ub85c\uadf8\ub7a8\uacfc (\ud504\ub85c\uadf8\ub7a8 \uc2e4\ud589\uc911 \uc0ac\uc6a9\ub418\ub294) \ub370\uc774\ud130 \uc800\uc7a5 \uacf5\uac04\uc744 \uc704\ud574 \uac19\uc740 \uba54\ubaa8\ub9ac \uacf5\uac04\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.

learn_arduino_Von_Neumann

\ubc18\uba74\uc5d0 Harvard Mark 1\uc5d0 \uc0ac\uc6a9\ub41c \ud558\ubc84\ub4dc \uc544\ud0a4\ud14d\ucc98\ub294 \ud504\ub85c\uadf8\ub7a8\uacfc \ub370\uc774\ud130 \uc800\uc7a5 \uacf5\uac04\uc744 \uc704\ud574 \ubb3c\ub9ac\uc801\uc73c\ub85c \ubd84\ub9ac\ub41c \uba54\ubaa8\ub9ac\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4.

learn_arduino_Harvard

\uc774 \ub450 \uac1c\uc758 \uc0c1\ubc18\ub41c \uc544\ud0a4\ud14d\ucc98\ub294 \uc11c\ub85c \uc7a5\ub2e8\uc810\uc774 \uc788\uc2b5\ub2c8\ub2e4. \ud558\ubc84\ub4dc \uc544\ud0a4\ud14d\ucc98\uac00 \uc131\ub2a5\uc5d0\uc11c \ub6f0\uc5b4\ub09c \ubc18\uba74 \ud3f0 \ub178\uc774\ub9cc \uc544\ud0a4\ud14d\ucc98\ub294 \ub354 \uc720\uc5f0\ud569\ub2c8\ub2e4.

\uadfc\ub798\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc77c\ubc18\uc801\uc778 \ucef4\ud4e8\ud130(PC, \ub9e5 \ub4f1\ub4f1)\ub294 \ub450 \uc544\ud0a4\ud14d\ucc98\uc758 \uc7a5\uc810\uc744 \uacb0\ud569\ud55c \ud558\uc774\ube0c\ub9ac\ub4dc \ub514\uc790\uc778\uc744 \ucc44\uc6a9\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. PC\uc758 CPU \ub0b4\ubd80\ub97c \uae4a\uc774 \ud30c\uace0\ub4e4\uba74 instruction, data\ub97c \uc704\ud55c \ubcc4\ub3c4\uc758 \uce90\uc2dc(cache)\ub97c \uc6b4\uc6a9\ud558\ubbc0\ub85c \ud558\ubc84\ub4dc \ubaa8\ub378\uc5d0 \uae30\ubc18\ud568\uc744 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc instruction, data \uce90\uc2dc\ub294 \uc790\ub3d9\uc73c\ub85c \uacf5\ud1b5 \uba54\ubaa8\ub9ac \uacf5\uac04\uc5d0 \uc62c\ub77c\uac11\ub2c8\ub2e4. \ud504\ub85c\uadf8\ub798\ubc0d \uad00\uc810\uc5d0\uc11c\ub294 \uc218 \uae30\uac00 \ubc14\uc774\ud2b8\uc758 \uac00\uc0c1\uacf5\uac04(virtual storage)\uc744 \uac00\uc9c4 \uc21c\uc218\ud55c \ud3f0 \ub178\uc774\ub9cc \uc7a5\uce58\ucc98\ub7fc \ubcf4\uc774\uac8c \ub429\ub2c8\ub2e4.





\ub9c8\uc774\ud06c\ub85c \ucee8\ud2b8\ub864\ub7ec (MICROCONTROLLERS)<\/strong>


\uc544\ub450\uc774\ub178\ub97c \ub3d9\uc791\uc2dc\ud0a4\ub294 \uac83\uacfc \uac19\uc740 \ub9c8\uc774\ud06c\ub85c \ucee8\ud2b8\ub864\ub7ec\ub294 \uc784\ubca0\ub514\ub4dc \uc2dc\uc2a4\ud15c\uc744 \uc704\ud574 \uc124\uacc4\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \uc77c\ubc18 \ubaa9\uc801\uc758 \ucef4\ud4e8\ud130\uc640\ub294 \ub2ec\ub9ac \uc784\ubca0\ub514\ub4dc \ud504\ub85c\uc138\uc11c\ub294 \ucd5c\uc18c\uc758 \ube44\uc6a9\uc73c\ub85c \ud6a8\uc728\uc801\uc774\uace0 \uc548\uc815\uc801\uc73c\ub85c \ub3d9\uc791\ud558\ub3c4\ub85d \uc694\uad6c\ub429\ub2c8\ub2e4. \ub530\ub77c\uc11c multi-layer caching, disk-based virtual memory systems \uacfc \uac19\uc740 \uc0ac\uce58\uc2a4\ub7ec\uc6c0\uc744 \ubc30\uc81c\ud558\uace0 \uad49\uc7a5\ud788 \ube61\ube61\ud558\uac8c \ub514\uc790\uc778\ub429\ub2c8\ub2e4. \uc774\ub7f0 \uc694\uad6c\uc0ac\ud56d\uc5d0\ub294 \ud558\ubc84\ub4dc \uc544\ud0a4\ud14d\ucc98\uac00 \uc798 \uc5b4\uc6b8\ub9bd\ub2c8\ub2e4. \uc544\ub450\uc774\ub178 UNO, Nano, Mini\uc758 \ud575\uc2ec \uce69\uc778 Atmega328 \ub3c4 (\uc0c1\ub300\uc801\uc73c\ub85c) \uc21c\uc218\ud55c \ud558\ubc84\ub4dc \uc544\ud0a4\ud14d\ucc98\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc791\uc131\ud55c \ud504\ub85c\uadf8\ub7a8(\uc2a4\ucf00\uce58)\uc740 \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac(32KB, \ud504\ub85c\uadf8\ub7a8 \uba54\ubaa8\ub9ac\ub77c\uace0\ub3c4 \ubd80\ub984)\uc5d0 \uc800\uc7a5\ub418\uace0 \ub370\uc774\ud130\ub294 SRAM(2KB)\uc5d0 \uc800\uc7a5\ub429\ub2c8\ub2e4.

\uc774\ub7f0 \uc791\uc5c5\ub4e4\uc740 \ucef4\ud30c\uc77c\ub7ec\uc640 run-time system\uc5d0 \uc758\ud574 \uad00\ub9ac\ub429\ub2c8\ub2e4. \uadf8\ub7f0\ub370 \uba54\ubaa8\ub9ac\uc758 \uc5ec\uc720\uac00 \uac70\uc758 \uc5c6\ub294 \uc0c1\ud669\uc774 \ub418\uba74 \uc774\ub7f0 \ubd80\ubd84\ub4e4\uc744 \uc778\uc704\uc801\uc73c\ub85c \uc5b4\ub5bb\uac8c \uad00\ub9ac\ud560\uc9c0 \uc804\ub7b5\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \ud2b9\ud788\ub098 \uc544\ub450\uc774\ub178 \uac19\uc740 \uc791\uc740 \uc7a5\uce58\uc5d0\uc11c\ub294 \uba54\ubaa8\ub9ac\uac00 \uaf49 \ucc28\ub294 \uc0c1\ud669\uc774 \uc27d\uac8c \uc624\ubbc0\ub85c \ud55c\uc815\ub41c \uc790\uc6d0\uc744 \uc544\uaef4\uc368\uc57c \ud569\ub2c8\ub2e4.

\uc774\uc81c \uc544\ub450\uc774\ub178\uac00 \uac00\uc9c4 \uac01 \uba54\ubaa8\ub9ac\uc758 \ud2b9\uc9d5\ub4e4 \ubd80\ud130 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.



\uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac - \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac(FLASH MEMORY)<\/strong>
\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\ub294 \ud504\ub85c\uadf8\ub7a8 \uc774\ubbf8\uc9c0\uc640 \ucd08\uae30\ud654\ub41c \ub370\uc774\ud130\uac00 \uc800\uc7a5\ub418\ub294 \uacf3\uc785\ub2c8\ub2e4. \uc544\ub450\uc774\ub178\uac00 \uc2e4\ud589\ub418\uba74 \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uc5d0\uc11c \ud504\ub85c\uadf8\ub7a8 \ucf54\ub4dc\uac00 \uc2e4\ud589\ub418\uc9c0\ub9cc \uc2e4\ud589\uc911\uc778 \ucf54\ub4dc\uc5d0\uc11c \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\ub97c \ubc14\uafc0 \uc218\ub294 \uc5c6\uc2b5\ub2c8\ub2e4. \ud50c\ub798\uc2dc\uc5d0 \uc800\uc7a5\ub41c \ub370\uc774\ud130\ub97c \ubc14\uafb8\uae30 \uc704\ud574\uc11c\ub294 \uba3c\uc800 SRAM\uc73c\ub85c \ubcf5\uc0ac\ub97c \ud574\uc57c \ud569\ub2c8\ub2e4.

\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\ub294 SD \uce74\ub4dc\uc640 \uac19\uc740 \uae30\uc220\uc785\ub2c8\ub2e4. \ube44\ud718\ubc1c\uc131(non-volatile)\uc774\ubbc0\ub85c \uc804\uc6d0\uc774 \ucc28\ub2e8\ub418\ub3c4 \uc9c0\uc6cc\uc9c0\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\ub294 1000,000 write cycle\uc744 \uac00\uc9c0\ubbc0\ub85c \uc601\uad6c\uc801\uc778 \uc800\uc7a5\uacf5\uac04\uc740 \uc544\ub2d9\ub2c8\ub2e4. \ud558\ub8e8\uc5d0 10\ubc88 \ud504\ub85c\uadf8\ub7a8\uc744 \uc5c5\ub85c\ub4dc \ud55c\ub2e4\uba74 \uc57d 27\ub144 \ud6c4 \ud55c\uacc4\uc5d0 \ub2e4\ub2e4\ub985\ub2c8\ub2e4.



\uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac - \ub7a8(SRAM, STATIC RANDOM ACCESS MEMORY)<\/strong>
\ub7a8\uc740 \uc2e4\ud589\uc911\uc778 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c \uc77d\uace0 \uc4f8\uc218 \uc788\ub294 \uba54\ubaa8\ub9ac\uc785\ub2c8\ub2e4. \uc544\ub798\uc640 \uac19\uc774 \ub370\uc774\ud130 \uc885\ub958\uc5d0 \ub530\ub77c \uad6c\ubd84\ub418\uc5b4 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.

Static data - \uc804\uc5ed \ubcc0\uc218(global variable), static \ubcc0\uc218\uc6a9\uc73c\ub85c \uc608\uc57d\ub41c \uacf5\uac04\uc785\ub2c8\ub2e4. \uc544\ub450\uc774\ub178 \ub7f0\ud0c0\uc784 \uc2dc\uc2a4\ud15c\uc740 \ud504\ub85c\uadf8\ub7a8\uc774 \uc2dc\uc791\ud560 \ub54c \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uc5d0\uc11c \uc774 \uac12\uc744 \uc77d\uc5b4 \ub7a8\uc73c\ub85c \ubcf5\uc0ac\ub97c \ud569\ub2c8\ub2e4.
Heap - \ud799\uc740 \ub3d9\uc791\uc73c\ub85c \ud560\ub2f9\ub418\ub294 \ub370\uc774\ud130\ub4e4\uc744 \uc704\ud55c \uc601\uc5ed\uc785\ub2c8\ub2e4. \ud799\uc740 \ub370\uc774\ud130\uac00 \ud560\ub2f9\ub420 \ub54c Static data \uc704\uc5d0 \ucc28\ub840\ub85c \uc800\uc7a5\ud558\uace0 \uc9c0\uc6c1\ub2c8\ub2e4.
Stack - \uc2a4\ud0dd\uc740 \uc9c0\uc5ed \ubcc0\uc218(local variable)\ub97c \uc704\ud55c \uacf5\uac04\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 \ud568\uc218(\ub610\ub294 \uc778\ud130\ub7fd\ud2b8)\uac00 \ud638\ucd9c\ub418\uc5b4 \ud568\uc218 \ub0b4\ubd80 \ucf54\ub4dc\uac00 \uc2e4\ud589\ub420 \ub54c, \ud568\uc218 \ub0b4\ubd80\uc5d0\uc11c \uc120\uc5b8\ub41c \ubcc0\uc218\uac00 \uc788\ub2e4\uba74 \uc2a4\ud0dd\uc5d0 \uc800\uc7a5\ub429\ub2c8\ub2e4. \uc2a4\ud0dd\uc740 (\uadf8\ub9bc\uacfc \uac19\uc774) \uba54\ubaa8\ub9ac \ucd5c \uc0c1\uc704\ubd80\ud130 \ud799 \uc601\uc5ed \ubc29\ud5a5\uc73c\ub85c \uc800\uc7a5\ub429\ub2c8\ub2e4. \ud568\uc218, \uc778\ud130\ub7fd\ud2b8 \uc2e4\ud589 \ub610\ub294 \uc9c0\uc5ed \ubcc0\uc218 \uc120\uc5b8\uc740 \uc2a4\ud0dd\uc744 \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \ud568\uc218, \uc778\ud130\ub7fd\ud2b8 \uc2e4\ud589\uc774 \ub05d\ub098\uba74 \uc99d\uac00\ud588\ub358 \uba54\ubaa8\ub9ac \ub9cc\ud07c \ub2e4\uc2dc \ubc18\ud658\ub429\ub2c8\ub2e4.
Free memory - \uc704 3\uac1c\uc758 \uc601\uc5ed\uc73c\ub85c \uc0ac\uc6a9\ub418\uc9c0 \uc54a\ub294 \uc5ec\uc720 \uacf5\uac04.
\ub300\ubd80\ubd84\uc758 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub294 \uc5ec\uc720 \uacf5\uac04\uc774 \ubd80\uc871\ud574 \ud799\uacfc \uc2a4\ud0dd\uc774 \ucda9\ub3cc\ud560 \ub54c \ubc1c\uc0dd\ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uc774\ub54c \uc5b4\ub5a4 \uc77c\uc774 \ubc1c\uc0dd\ud560\uc9c0\ub294 \uc608\uce21\ud558\uae30 \ud798\ub4ed\ub2c8\ub2e4.
\uc5b4\ub5a4 \uacbd\uc6b0\uc5d0\ub294 \ubb38\uc81c\uc810\uc774 \ud55c\ucc38 \ub4a4\uc5d0 \ub098\ud0c0\ub098\uae30\ub3c4 \ud569\ub2c8\ub2e4.



EEPROM<\/strong>
EEPROM(1KB)\uc740 \ud504\ub85c\uadf8\ub7a8\uc5d0\uc11c \uc77d\uace0 \uc4f8 \uc218 \uc788\ub294 \ube44\ud718\ubc1c\uc131 \uba54\ubaa8\ub9ac\uc785\ub2c8\ub2e4. \ub9c8\uce58 \ud558\ub4dc\ub514\uc2a4\ud06c\ucc98\ub7fc \uc0ac\uc6a9\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. EEPROM\uc740 byte \ub2e8\uc704\ub85c \uc77d\uace0 \uc4f8 \uc218 \uc788\uc73c\uba70 SRAM\ubcf4\ub2e4 \ub290\ub9b0 \ud2b9\uc9d5\uc774 \uc788\uc2b5\ub2c8\ub2e4. SRAM\uacfc \ubcc4\ub3c4\uc758 \uc601\uc5ed\uc774\ubbc0\ub85c \uacbd\uc6b0\uc5d0 \ub530\ub77c \uc720\uc6a9\ud558\uac8c \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uc640 \ub9c8\ucc2c\uac00\uc9c0\ub85c \uc77d\uae30-\uc4f0\uae30 100,000 \ud68c \uc815\ub3c4\uac00 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uba54\ubaa8\ub9ac \ubb38\uc81c\uc5d0\uc11c\uc758 \uc911\uc694\uc131\uc740 \uc880 \ub5a8\uc5b4\uc9d1\ub2c8\ub2e4.



\uc544\ub450\uc774\ub178 \uba54\ubaa8\ub9ac \ube44\uad50<\/strong>
\ud06c\uac8c 3\uac00\uc9c0 (\ud50c\ub798\uc2dc, \ub7a8, EEPROM) \uba54\ubaa8\ub9ac\ub85c \uad6c\ubd84\ud558\uc9c0\ub9cc \uc544\ub450\uc774\ub178 \uc885\ub958\ubcc4\ub85c \uba54\ubaa8\ub9ac \ud06c\uae30\ub294 \ud2c0\ub9bd\ub2c8\ub2e4. \uc544\ub798 \ud45c\ub97c \ucc38\uace0\ud558\uc138\uc694.

learn_arduino_ArduinoChart





\uba54\ubaa8\ub9ac \uc0ac\uc6a9\ub7c9 \uce21\uc815 \ubc29\ubc95<\/strong>


\uba54\ubaa8\ub9ac \ubb38\uc81c\ub97c \ud574\uacb0\ud558\uae30 \uc704\ud55c \uccab \uac78\uc74c\uc740 \uba54\ubaa8\ub9ac \uc0ac\uc6a9\ub7c9\uc744 \uce21\uc815\ud558\ub294 \uac83\uc785\ub2c8\ub2e4.

\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac
\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac \uc0ac\uc6a9\ub7c9\uc740 \uc5c5\ub85c\ub4dc \ud560 \ub54c \uacb0\uc815\ub429\ub2c8\ub2e4. \uc5c5\ub85c\ub4dc \ud560 \ub54c \uc544\ub450\uc774\ub178 \uac1c\ubc1c\ud658\uacbd\uc758 \uba54\uc2dc\uc9c0 \ucc3d(\ud558\ub2e8 \uac80\uc740\uc0c9 \uc601\uc5ed)\uc744 \ubcf4\uc2dc\uba74 \ucef4\ud30c\uc77c \ub41c \ubc14\uc774\ub108\ub9ac \uc0ac\uc774\uc988\uac00 \ub098\uc635\ub2c8\ub2e4. \uc0ac\uc774\uc988\uac00 \ub108\ubb34 \ud074 \uacbd\uc6b0 \uc5d0\ub7ec \uba54\uc2dc\uc9c0\ub3c4 \uc5ec\uae30\uc5d0 \ud45c\uc2dc\ub429\ub2c8\ub2e4.

SRAM<\/strong>
SRAM\uc740 \ub3d9\uc801\uc73c\ub85c \uacc4\uc18d \ubcc0\ud654\ud558\ub294 \uba54\ubaa8\ub9ac\uc774\uae30 \ub54c\ubb38\uc5d0 \uce21\uc815\ud558\uae30\ub3c4 \ud798\ub4ed\ub2c8\ub2e4. \uc544\ub798\uc640 \uac19\uc774 free_ram() \ud568\uc218\ub97c \uc791\uc131\ud574\uc11c \ud504\ub85c\uadf8\ub7a8 \uacf3\uacf3\uc5d0\uc11c \uccb4\ud06c\ud574\uc57c \ud569\ub2c8\ub2e4.

int freeRam ()
{
  extern int __heap_start, *__brkval;
  int v;
  return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
}


\uc2e4\uc81c free_ram() \ud568\uc218\uac00 \uc54c\ub824\uc8fc\ub294 \uac83\uc740 \ud799\uacfc \uc2a4\ud0dd \uc0ac\uc774\uc758 \uc5ec\uc720 \uacf5\uac04\uc785\ub2c8\ub2e4.

Stack_Operation

\ud799 \uacf5\uac04\uc740 \ub370\uc774\ud130\ub85c \uaf49 \ucc2c\uac8c \uc544\ub2c8\ub77c \ud30c\ud3b8\ud654\ub418\uc5b4 \ucc44\uc6cc\uc9c0\uae30 \ub54c\ubb38\uc5d0 \uc0ac\uc6a9\ub418\uc9c0 \uc54a\ub294 \uc5ec\uc720\uacf5\uac04\uc774 \uc788\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc774 \uacf5\uac04\uc740 \ud504\ub85c\uadf8\ub798\uba38\uac00 \uc9c1\uc811 \uc0ac\uc6a9\ud560 \uc218 \uc5c6\uae30 \ub54c\ubb38\uc5d0 \uace0\ub824\ud558\uc9c0 \uc54a\uc544\ub3c4 \uc88b\uc2b5\ub2c8\ub2e4. free_ram()\uc73c\ub85c \uccb4\ud06c\ub418\ub294 \uc5ec\uc720 \uacf5\uac04\uc744 \uccb4\ud06c\ud574\uc57c \ud569\ub2c8\ub2e4.



EEPROM
EEPROM\uc740 100% \ud504\ub85c\uadf8\ub798\uba38\uac00 \uc81c\uc5b4\uac00 \uac00\ub2a5\ud558\ubbc0\ub85c \uc5b4\ub514\uc5b4 \uc5b4\ub5bb\uac8c \uc4f0\uace0, \uc5b8\uc81c \uc5b4\ub514\uc11c \uc5b4\ub5bb\uac8c \uc77d\uc744\uc9c0 \uc2a4\uc2a4\ub85c \uacc4\ud68d\ud574\uc57c \ud569\ub2c8\ub2e4. \ub530\ub77c\uc11c \ubcc4\ub3c4\ub85c \uc0ac\uc6a9\ub7c9 \uce21\uc815\uc774 \ud544\uc694\ud55c\uac8c \uc544\ub2c8\ub77c \ud504\ub85c\uadf8\ub798\uba38\uac00 \uc54c\uc544\uc11c \uad00\ub9ac\ud574\uc57c \ud569\ub2c8\ub2e4.

\/\/ ************************************************
\/\/ Write floating point values to EEPROM
\/\/ ************************************************
void EEPROM_writeDouble(int address, double value)
{
   byte* p = (byte*)(void*)&value;
   for (int i = 0; i < sizeof(value); i++)
   {
      EEPROM.write(address++, *p++);
   }
}

\/\/ ************************************************
\/\/ Read floating point values from EEPROM
\/\/ ************************************************
double EEPROM_readDouble(int address)
{
   double value = 0.0;
   byte* p = (byte*)(void*)&value;
   for (int i = 0; i < sizeof(value); i++)
   {
      *p++ = EEPROM.read(address++);
   }
   return value;
}






\uba54\ubaa8\ub9ac\ub97c \uc7a1\uc544\uba39\ub294 \uad34\ubb3c\ub4e4<\/strong>


\uc774\uc81c \uba54\ubaa8\ub9ac\ub97c \uc18c\ube44\ud558\ub294 \uc8fc\uc694 \uc6d0\uc778\ub4e4\uc744 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \ud2b9\uc815 \uc7a5\uce58\ub098 \ub4dc\ub77c\uc774\ubc84, \ub77c\uc774\ube0c\ub7ec\ub9ac\ub294 \ub3d9\uc791\uc744 \uc704\ud574 \ub9ce\uc740 \uc591\uc758 \uba54\ubaa8\ub9ac\ub97c \uc7a1\uc544 \uba39\uc2b5\ub2c8\ub2e4. \uc544\ub798 \uc7a5\uce58\ub4e4\uc740 \uba54\ubaa8\ub9ac\ub97c \uc7a1\uc544\uba39\ub294 \uad34\ubb3c\uc774\ub77c \ubd88\ub9b4\ub9cc \ud558\ubbc0\ub85c \uc0ac\uc6a9\uc2dc \uc8fc\uc758\ud574\uc57c \ud569\ub2c8\ub2e4.

SD \uce74\ub4dc<\/strong>
SD, Micro SD \uce74\ub4dc \ubaa8\ub4c8\uc740 \uc785\ucd9c\ub825\uc744 \uc704\ud574 512byte\uc758 SRAM \ubc84\ud37c\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.

learn_arduino_2013_07_25_IMG_2067

PIXEL<\/strong>
RGB LED Strip \uac19\uc740 \uc7a5\uce58\uc758 \uacbd\uc6b0 \uc0c9 \ud45c\ud604\uc744 \uc704\ud574 \uac01 \ud53d\uc140(LED) \ub2f9 3 byte\uc758 \uba54\ubaa8\ub9ac\uac00 \ud544\uc694\ud569\ub2c8\ub2e4. \ub2f9\uc5f0\ud788 \ud53d\uc140 \uc218\uac00 \ub298\uc5b4\ub0a0\uc218\ub85d \uba54\ubaa8\ub9ac \uc694\uad6c\ub7c9\ub3c4 \uc99d\uac00\ud569\ub2c8\ub2e4. UNO \ubcf4\ub4dc\uc758 \uacbd\uc6b0 SRAM \ud06c\uae30\ub97c \uace0\ub824\ud560 \ub54c 500\uac1c \uc815\ub3c4\uc758 \ud53d\uc140\uc744 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac01\uc885 \ud1b5\uc2e0 \ubaa8\ub4c8 \ub4f1 \ub2e4\ub978 \ubaa8\ub4c8\uc774 \ucd94\uac00\ub420 \uacbd\uc6b0 \uc774 \uc218\ub294 \uc904\uc5b4\ub4ed\ub2c8\ub2e4.

learn_arduino_1430_LRG

RGB MATRIX DISPLAYS<\/strong>
RGB Matrix\ub3c4 \ub9c8\ucc2c\uac00\uc9c0\uc758 \uc774\uc720\ub85c RAM\uc744 \ub9ce\uc774 \uc7a1\uc544 \uba39\uc2b5\ub2c8\ub2e4. 32x32 \ubaa8\ub378\uc758 \uacbd\uc6b0 1600 byte\uc758 SRAM\uc744 \uc18c\ubaa8\ud569\ub2c8\ub2e4. \uc774\ub7f0 \uacbd\uc6b0 \uc544\uc608 \uc544\ub450\uc774\ub178 \uba54\uac00 \uac19\uc740 (\uc0c1\ub300\uc801\uc73c\ub85c)\uace0\uc131\ub2a5 \ubcf4\ub4dc\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.

learn_arduino_rgbmatrix3232_LRG

MONOCHROME OLED DISPLAYS<\/strong>
128x64 \ud574\uc0c1\ub3c4\uc758 OLED \ub514\uc2a4\ud50c\ub808\uc774\ub294 \uc790\uc8fc \uc0ac\uc6a9\ub418\ub294 \ubaa8\ub378 \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \ub2e8\uc0c9 on\/off \ud45c\ud604\ub9cc \uac00\ub2a5\ud568\uc5d0\ub3c4 \ud53d\uc140 \uc218\uac00 1024\uac1c \uc774\ubbc0\ub85c 1KB\uc758 \ub7a8\uc744 \uc18c\ube44\ud569\ub2c8\ub2e4. \uac19\uc740 \ud574\uc0c1\ub3c4\uc758 \uceec\ub7ec OLED \ubaa8\ub4c8\ub3c4 \ud310\ub9e4\ub418\uace0 \uc788\ub294\ub370 \uc6b0\ud68c\uc801\uc778 \ubc29\ubc95\uc774 \uc544\ub2c8\uba74 \uc544\ub450\uc774\ub178 UNO \ubcf4\ub4dc\uc5d0\uc11c \uc4f8 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4.

learn_arduino_ID938_LRG

ST7565 LCD DISPLAYS<\/strong>
\ub3d9\uc791\ud558\ub294 \ubc29\uc2dd\uc774 \ud2c0\ub9b4 \ubfd0 \uba54\ubaa8\ub9ac \uc18c\ube44\ub294 \ub2e8\uc0c9 OLED\uc640 \uac19\uc2b5\ub2c8\ub2e4. 128x64 \ud574\uc0c1\ub3c4\uc758 \uacbd\uc6b0 1KB\uc758 \ub7a8\uc744 \uc18c\ube44\ud569\ub2c8\ub2e4.

learn_arduino_st7565posblue_LRG

E-INK DISPLAYS<\/strong>
\ub2e8\uc0c9 e-Ink \ub514\uc2a4\ud50c\ub808\uc774\uc758 \uacbd\uc6b0 8\ud53d\uc140\ub2f9 1byte\uac00 \ud544\uc694\ud55c \uc810\uc740 \uac19\uc2b5\ub2c8\ub2e4. \ub2e4\ub9cc \ub514\uc2a4\ud50c\ub808\uc774\uac00 \uace0\ud574\uc0c1\ub3c4\uc778 \uacbd\uc6b0\uac00 \ub9ce\uc544\uc11c \ub7a8 \uc694\uad6c\ub7c9\ub3c4 \ub192\uc740 \ud3b8\uc785\ub2c8\ub2e4. 2.0'' \ubc84\uc804\uc758 \uacbd\uc6b0 3KB\uc758 \ub7a8\uc774 \ud544\uc694\ud569\ub2c8\ub2e4.

learn_arduino_2013_04_27_IMG_1728-1024



\ubcf4\uc2dc\uba74 \ub300\ubd80\ubd84 \ub514\uc2a4\ud50c\ub808\uc774 \ubaa8\ub4c8\uc758 \ub7a8 \uc694\uad6c\ub7c9\uc774 \ub192\uc740 \uac78 \uc54c \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7f0 \ubb38\uc81c\uc810\uc744 \ud574\uacb0\ud558\uae30 \uc704\ud574 \ub354 \uc801\uc740 \ub7a8\uc73c\ub85c\ub3c4 \ub514\uc2a4\ud50c\ub808\uc774\ub97c \ucee8\ud2b8\ub864 \ud560 \uc218 \uc788\ub294 u8glib \uac00 \uac1c\ubc1c\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4. \ub514\uc2a4\ud50c\ub808\uc774 \uc678\uc5d0\ub3c4 \ub9ce\uc740 \uc591\uc758 \ud14d\uc2a4\ud2b8 \ub370\uc774\ud130\ub97c \ud544\uc694\ub85c \ud558\ub294 WiFi, Ethernet \ubaa8\ub4c8\ub3c4 \uc8fc\uc758\ud574\uc57c \ud569\ub2c8\ub2e4. (\ubcf4\ud1b5 300~500 byte \uc815\ub3c4\uc758 \ubc84\ud37c\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc0ac\uc6a9\uc790\uac00 \ud06c\uae30\ub97c \ubcc0\uacbd\ud560 \uc218\ub294 \uc788\uc2b5\ub2c8\ub2e4.)

Serial, SoftwareSerial, I2C, SPI \uc640 \uac19\uc740 \ud1b5\uc2e0 \uc778\ud130\ud398\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud560 \ub54c\ub3c4 \ud1b5\uc2e0\uc6a9 \ubc84\ud37c\uac00 \ub7a8\uc744 \uc7a1\uc544\uba39\uc2b5\ub2c8\ub2e4. (\ud1b5\uc2e0 \ub77c\uc774\ube0c\ub7ec\ub9ac\uc5d0 \ub530\ub77c \uc0ac\uc6a9\ub7c9\uc740 \ub2e4\ub984)

\uc55e\uc11c \uc18c\uac1c\ud55c \ubaa8\ub4c8\ub4e4\uacfc \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud560  \ub54c\ub294 \uba54\ubaa8\ub9ac \ubb38\uc81c\uc5d0 \ud2b9\ud788 \uc8fc\uc758\ud574\uc57c \ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0 \uba54\ubaa8\ub9ac \ubb38\uc81c\uac00 \ubc1c\uacac\ub418\uba74 \ubb38\uc81c\uac00 \ub418\ub294 \uc0c1\ud669\ubcc4\ub85c \ub300\ucc98\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.





\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac \ubb38\uc81c \ud574\uacb0\ubc95<\/strong>


\ud504\ub85c\uadf8\ub7a8 \ubc14\uc774\ub108\ub9ac \uc0ac\uc774\uc988\uac00 \ub118\uce58\ub294 \uacbd\uc6b0 \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\ub97c \ud655\ubcf4\ud574\uc57c \ud569\ub2c8\ub2e4.



DEAD CODE \uc5c6\uc560\uae30<\/strong>
\uc628\ub77c\uc778\uc73c\ub85c \uacf5\uc720\ub41c \ucf54\ub4dc\ub4e4\uc744 \ubd99\uc5ec \uc0c8\ub85c\uc6b4 \ucf54\ub4dc\ub97c \ub9cc\ub4e0 \uacbd\uc6b0 \uc4f8\ubaa8 \uc5c6\ub294 \ucf54\ub4dc\ub4e4\uc774 \uc788\uc744 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\uac83\ub4e4\uc744 \uc81c\uac70\ud574\uc8fc\ub294 \uac83\uc774 \uccab \uac78\uc74c \uc785\ub2c8\ub2e4.

\uc0ac\uc6a9\ub418\uc9c0 \uc54a\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac : #include \ub85c \ud3ec\ud568\ub41c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub4e4, \uc8fc\uc11d\uc73c\ub85c \uc81c\uac70\ud574\uc11c \ucef4\ud30c\uc77c \ud574\ubcf4\uace0 \ubb38\uc81c \uc5c6\uc73c\uba74 \uc0ad\uc81c\ud574\ub3c4 OK
\uc0ac\uc6a9\ub418\uc9c0 \uc54a\ub294 \ud568\uc218 : \ud55c \ubc88\ub3c4 \ud638\ucd9c\ub418\uc9c0 \uc54a\ub294 \ud568\uc218\ub4e4
\uc0ac\uc6a9\ub418\uc9c0 \uc54a\ub294 \ubcc0\uc218 : \uac12\uc740 \uc885\uc885 \uc5c5\ub370\uc774\ud2b8 \ub418\uc9c0\ub9cc \uc2e4\uc81c \uc0ac\uc6a9\ub418\uc9c0\ub294 \uc54a\ub294 \ubcc0\uc218\ub4e4
\uc2e4\ud589\ub418\uc9c0 \uc54a\ub294 \ucf54\ub4dc : \ub098\uc911\uc5d0 \uc4f0\uc77c \uac83 \uac19\uc544 \ub9cc\ub4e4\uc5b4\ub454 \ucf54\ub4dc\ub4e4, \uc5d0\ub7ec\ub97c \ub300\ube44\ud574 \ub514\ubc84\uae45 \uc6a9\ub3c4\ub85c \ub9cc\ub4e4\uc5b4 \ub454 \ucf54\ub4dc\ub4e4.
\ubc18\ubcf5\ub418\ub294 \ucf54\ub4dc : \uac19\uc740 \ucf54\ub4dc\uac00 \uc18c\uc2a4\ucf54\ub4dc \uc5ec\ub7ec \uacf3\uc5d0\uc11c \ubc18\ubcf5\ub418\ub294 \uacbd\uc6b0 \ud568\uc218\ub85c \ub9cc\ub4e4\uc5b4\uc11c \ud638\ucd9c\ud558\ub3c4\ub85d \ucc98\ub9ac


\ubd80\ud2b8\ub85c\ub354 \uc81c\uac70<\/strong>
\ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac \uc601\uc5ed\uc740 \ubd80\ud2b8\ub85c\ub354 \ucf54\ub4dc \uc800\uc7a5\uc744 \uc704\ud574\uc11c\ub3c4 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.
\uadf8\ub7f4 \uc77c\uc740 \uc798 \uc5c6\uc9c0\ub9cc \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uac00 \ubd80\uc871\ud55c \uacbd\uc6b0 \ubd80\ud2b8\ub85c\ub354 \uc81c\uac70\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.
\uc81c\uac70\ud560 \uacbd\uc6b0 \uc0ac\uc6a9\ub418\ub294 \ubd80\ud2b8\ub85c\ub354 \uc885\ub958\uc5d0 \ub530\ub77c 2K~4K \uc815\ub3c4\uc758 \ud50c\ub798\uc2dc \uc601\uc5ed\uc744 \ud655\ubcf4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.
\ubd80\ud2b8\ub85c\ub354\ub97c \uc81c\uac70\ud558\uba74 \uc774\ud6c4\ubd80\ud130\ub294 \uc5c5\ub85c\ub4dc \ud560 \ub54c\ub9c8\ub2e4 ISP programmer\ub97c \uc774\uc6a9\ud574 \uc5c5\ub85c\ub4dc \ud574\uc57c\ud569\ub2c8\ub2e4.



\ub7a8 \ubb38\uc81c \ud574\uacb0\ubc95<\/strong>


\ub300\ubd80\ubd84\uc758 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub294 \ub7a8 \ubb38\uc81c\uc785\ub2c8\ub2e4\ub9cc \ubb38\uc81c \ubd84\uc11d\ud558\uae30\ub3c4 \uc81c\uc77c \uc5b4\ub824\uc6b4 \uac83\uc774 \ub7a8 \ubb38\uc81c\uc785\ub2c8\ub2e4. \uc544\ub798 \ubc29\ubc95\ub4e4\ub85c \ucd5c\ub300\ud55c \ub7a8 \uc6a9\ub7c9\uc744 \ud655\ubcf4\ud574\uc57c \ud569\ub2c8\ub2e4.

Stack_Operation



\uc0ac\uc6a9\ud558\uc9c0 \uc54a\ub294 \ubcc0\uc218 \uc81c\uac70<\/strong>
\ubd88\ud544\uc694\ud55c \ubcc0\uc218\ub294 \ucd5c\ub300\ud55c \uc81c\uac70\ud569\ub2c8\ub2e4.

F() \ub9e4\ud06c\ub85c \uc0ac\uc6a9<\/strong>
\ubb38\uc790\uc5f4\uc740 \uba54\ubaa8\ub9ac\uc758 \uace8\uce58\uac70\ub9ac \uc911 \ud558\ub098\uc785\ub2c8\ub2e4. \ubb38\uc790\uc5f4\uc740 \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uc5d0 \ud504\ub85c\uadf8\ub7a8 \uc774\ubbf8\uc9c0\uc5d0 \ud3ec\ud568\ub418\uc5b4 \ud0d1\uc7ac\ub41c \ub4a4, \ub2e4\uc2dc static \ubcc0\uc218\ub85c SRAM\uc744 \uc7a1\uc544\uc2b5\ub2c8\ub2e4. \uc774\uc5d0 Paul Stoffregen of PJRC and Teensyduino \uc774 \ub9cc\ub4e0 \uac04\ub2e8\ud558\uace0 \ud6cc\ub96d\ud55c \uc194\ub8e8\uc158\uc774 F() \ub9e4\ud06c\ub85c\uc785\ub2c8\ub2e4. \uc774 \ub9e4\ud06c\ub85c\ub294 \ubb38\uc790\uc5f4\uc774 SRAM\uc5d0 \ubcf5\uc0ac\ub418\uc9c0 \uc54a\ub3c4\ub85d \ud574\uc8fc\uba70 \uc544\ub450\uc774\ub178\uac00 \uc2e4\ud589\ub418\uba74\uc11c \ubb38\uc790\uc5f4\uc744 \uc0ac\uc6a9\ud560 \ub54c \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac\uc5d0\uc11c \uc9c1\uc811 \uc77d\uc5b4 \uc0ac\uc6a9\ud558\ub3c4\ub85d \ud574\uc90d\ub2c8\ub2e4. \uc2e4\uc81c\ub85c\ub294 PROGMEM \uc9c0\uc2dc\uc5b4\ub97c \uc0ac\uc6a9\ud574\uc11c \uc120\uc5b8\ub41c \ubcc0\uc218\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uacfc \uac19\uc740 \uc6d0\ub9ac\uc785\ub2c8\ub2e4. \uc544\ub798 \uc608\uc81c\ucc98\ub7fc \ubb38\uc790\uc5f4\uc744 F() \ub85c \uac10\uc2f8\uc11c \uc0ac\uc6a9\ud558\uba74 \ub429\ub2c8\ub2e4.

Serial.println(\"Sram sram sram sram. Lovely sram! Wonderful sram! Sram sra-a-a-a-a-am sram sra-a-a-a-a-am sram. Lovely sram! Lovely sram! Lovely sram! Lovely sram! Lovely sram! Sram sram sram sram!\");

Serial.println(F(\"Sram sram sram sram. Lovely sram! Wonderful sram! Sram sra-a-a-a-a-am sram sra-a-a-a-a-am sram. Lovely sram! Lovely sram! Lovely sram! Lovely sram! Lovely sram! Sram sram sram sram!\"));


\uc774\ub807\uac8c \uc0ac\uc6a9\ud558\uba74 SRAM 180 byte\ub97c \uc544\ub084 \uc218 \uc788\uc2b5\ub2c8\ub2e4. Ethernet, Wifi \ubaa8\ub4c8\uc5d0\uc11c\ub294 \uc6f9 \ud398\uc774\uc9c0\ub97c \ub9cc\ub4e4\uac70\ub098 HTTP Request\/Response\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574\uc11c\ub294 \uc774\ucc98\ub7fc \uae34 \ubb38\uc790\uc5f4\uc774 \ud544\uc694\ud568\uc744 \ub5a0\uc62c\ub9ac\uc2dc\uba74 \uc65c \uc774\uac8c \uc720\uc6a9\ud55c\uc9c0 \uac10\uc774 \uc624\uc2e4\uac81\ub2c8\ub2e4.



RESERVE() \uc0ac\uc6a9<\/strong>
\uc544\ub450\uc774\ub178\uc758 String \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\ub294 \uacbd\uc6b0 \ubb38\uc790\uc5f4\uc774 \ub3d9\uc801\uc73c\ub85c \ucee4\uc9c0\uba74\uc11c \ud799(heap)\uc744 \ud30c\ud3b8\ud654\uc2dc\ud0a4\uac8c \ub429\ub2c8\ub2e4. \uc774\ub54c reserve(num) \ud568\uc218\ub97c \uc0ac\uc6a9\ud558\uba74 \ub3d9\uc801\uc73c\ub85c \uc99d\uac00\ud558\ub294 \ubb38\uc790\uc5f4\uc744 \uc704\ud55c \ubc84\ud37c\ub97c \ud560\ub2f9\ud574\uc11c \ud799 \ud30c\ud3b8\ud654\ub97c \uc904\uc5ec\uc90d\ub2c8\ub2e4. \ubb38\uc790\uc5f4\uc744 \ucc98\ub9ac\ud558\uba74\uc11c \uae38\uc774\uac00 \uc99d\uac00\ud558\uace0, \uc7a0\uae50 \uc0ac\uc6a9\ud558\ub294 \ubb38\uc790\uc5f4\uc774 \uc544\ub2cc \uacbd\uc6b0\ub294 \ub2e8\uc9c0 reserve() \ud568\uc218\ub9cc \ud638\ucd9c\ud574\uc8fc\uba74 \ub429\ub2c8\ub2e4. \uc774\ub7f0 \uc791\uc5c5\uc740 C string \uc744 \uc774\uc6a9\ud574\uc11c \ub354 \ud6a8\uc728\uc801\uc73c\ub85c \ud560 \uc218 \uc788\uc9c0\ub9cc, \uac04\ub2e8\ud55c \uac00\uc774\ub4dc\ub77c\uc778\ub9cc \uc9c0\ud0b4\uc73c\ub85c\uc368 \ud6a8\uc728\uc131\uc5d0\uc11c \ud070 \ucc28\uc774\uc5c6\uc774 \ud3b8\ub9ac\ud55c String object\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.



\uc77d\uae30 \uc804\uc6a9 \ub370\uc774\ud130\uc5d0 PROGMEM \uc0ac\uc6a9<\/strong>
\uc55e\uc120 F() \uc124\uba85\ud558\uba74\uc11c \uc5b8\uae09\ub41c PROGMEM \uc9c0\uc2dc\uc5b4\ub294 \ud50c\ub798\uc2dc \uba54\ubaa8\ub9ac \uc601\uc5ed\ub9cc \uc0ac\uc6a9\ud558\uace0 RAM\uc744 \uc18c\ubaa8\ud558\uc9c0 \uc54a\ub3c4\ub85d \ud574\uc90d\ub2c8\ub2e4. \ub300\uc2e0 \uc77d\uae30 \uc804\uc6a9(read only) \ub370\uc774\ud130\ub9cc \uc0ac\uc6a9\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4. \uc77d\uae30 \uc804\uc6a9 \ub370\uc774\ud130\uc758 \uacbd\uc6b0 \uac00\uae09\uc801 PROGMEM \uc9c0\uc2dc\uc5b4\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ub7a8\uc744 \uc544\ub07c\ub294 \uc9c0\ub984\uae38\uc785\ub2c8\ub2e4. \uc0c1\uc138 \ub0b4\uc6a9\uc740 \uc544\ub798 \ub9c1\ud06c\ub97c \ucc38\uace0\ud558\uc138\uc694.

http:\/\/www.hardcopyworld.com\/gnuboard5\/bbs\/board.php?bo_table=lecture_pract&wr_id=13&page=2



\ubc84\ud37c \uc0ac\uc774\uc988 \ucd95\uc18c<\/strong>
\ubc84\ud37c \ud560\ub2f9 : \ubc84\ud37c, \ubc30\uc5f4 \ub4f1\uc744 \uc0ac\uc6a9\ud55c\ub2e4\uba74 \ud544\uc694\ud55c \ub9cc\ud07c\ub9cc \ud560\ub2f9
\ub77c\uc774\ube0c\ub7ec\ub9ac\uc758 \ubc84\ud37c : \ubc84\ud37c \uc0ac\uc774\uc988\ub97c \uc870\uc808\ud560 \uc218 \uc788\ub3c4\ub85d \ud568\uc218\ub97c \uc81c\uacf5\ud558\ub294 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub4e4\uc774 \uc788\uc2b5\ub2c8\ub2e4.
\uc2dc\uc2a4\ud15c \ubc84\ud37c : \uc544\ub450\uc774\ub178\uc758 \uac00\uc7a5 \uae30\ubcf8\uc778 Serial \ud1b5\uc2e0\uc5d0 \uc0ac\uc6a9\ub418\ub294 \ubc84\ud37c\ub4e4\ub3c4 \uc788\uc2b5\ub2c8\ub2e4.
\uc544\ub450\uc774\ub178\uc5d0\uc11c \uae30\ubcf8\uc73c\ub85c \uc0ac\uc6a9\ub418\ub294 Serial \ub77c\uc774\ube0c\ub7ec\ub9ac\ub294 Serial receive buffer \uc6a9\ub3c4\ub85c 64 byte \ub97c \ud560\ub2f9\ud569\ub2c8\ub2e4. \ube60\ub978 \uc18d\ub3c4\ub85c \ub9ce\uc740 \uc591\uc758 \ub370\uc774\ud130\uac00 \uc624\uac00\uc9c0 \uc54a\ub294\ub2e4\uba74 \uc774\uac78 \ubc18 \uc774\ud558\ub85c \uc904\uc77c \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \uc544\ub450\uc774\ub178 \uc124\uce58\ud3f4\ub354\uc758 HardwareSerial.cpp \ud30c\uc77c\uc744 \uc5f4\uc5b4\uc11c

....\\Arduino-1.x.x\\hardware\\arduino\\cores\\arduino\\HardwareSerial.cpp

\uc544\ub798 \ubd80\ubd84\uc744 \uc801\ub2f9\ud788 \uc218\uc815\ud574\uc8fc\uba74 \ub429\ub2c8\ub2e4.

#define SERIAL_BUFFER_SIZE 64


\ubd88\ud544\uc694\ud558\uac8c \ud06c\uac8c \uc7a1\uc740 \ubcc0\uc218 \uc218\uc815<\/strong>
\ubd88\ud544\uc694\ud558\uac8c \ud06c\uac8c \uc7a1\uc740 \ubcc0\uc218\ub3c4 \uc218\uc815\ud558\uc138\uc694. (double->float, long->int \ub4f1\ub4f1)

learn_arduino_DataTypes



GLOBAL & STATIC VARIABLES<\/strong>
Global, Static \ubcc0\uc218\ub85c \uc120\uc5b8\ub41c \uacbd\uc6b0 \uc544\ub450\uc774\ub178\uac00 \ub3d9\uc791\ud560 \ub3d9\uc548\uc740 \uc77c\uc815\ub7c9\uc758 \uba54\ubaa8\ub9ac\ub97c \uacc4\uc18d \ucc28\uc9c0\ud558\uace0 \uc788\uc2b5\ub2c8\ub2e4. Global, Static \ubcc0\uc218\ub97c \ub0a8\ubc1c\ud558\uc9c0 \ub9c8\uc138\uc694.



\ub3d9\uc801 \ud560\ub2f9 (DYNAMIC ALLOCATIONS)<\/strong>
Object, \ub370\uc774\ud130\uac00 \ub3d9\uc801\uc73c\ub85c \ud560\ub2f9\ub418\ub294 \uacbd\uc6b0\ub294 \ud799 \uc0ac\uc774\uc988\uac00 \uc2a4\ud0dd \ubc29\ud5a5\uc73c\ub85c \uc99d\uac00\ud569\ub2c8\ub2e4. \uc774\ub807\uac8c \ud560\ub2f9\ub41c \uba54\ubaa8\ub9ac\ub294 \ub2e4\uc2dc \ud574\uc81c\uac00 \uac00\ub2a5\ud558\uc9c0\ub9cc \uadf8\ub807\ub2e4\uace0 \ubc18\ub4dc\uc2dc \ud799\uc774 \uc904\uc5b4\ub4dc\ub294 \uac83\uc740 \uc544\ub2d9\ub2c8\ub2e4!! \ub9cc\uc591\uc5d0 \ub2e4\ub978 \ub370\uc774\ud130\uac00 \ud799\uc5d0 \ub3d9\uc801\uc73c\ub85c \ud560\ub2f9\ub418\uc5b4 \uc62c\ub77c\uac04\ub2e4\uba74 \ud799\uc758 \uaf2d\uc9c0\uc810\uc740 \uc904\uc5b4\ub4e4\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4. \uc774 \uacbd\uc6b0\ub294 \uad6c\uba4d \uc1a1\uc1a1 \uc2a4\uc704\uc2a4 \uce58\uc988\ucc98\ub7fc \ud799\uc774 \ud30c\ud3b8\ud654(fragmented) \ub418\uac8c \ub429\ub2c8\ub2e4. \ub3d9\uc801 \ud560\ub2f9\uc740 \uaf2d \ud544\uc694\ud560 \ub54c\ub9cc \uc0ac\uc6a9\ud558\uc138\uc694. (\ud2b9\ud788 \ubb38\uc790\uc5f4)



\uc9c0\uc5ed \ubcc0\uc218(LOCAL VARIABLES)<\/strong>
\ud568\uc218\uac00 \uc2e4\ud589\ub420 \ub54c stack frame \uc744 \uc0dd\uc131\ud558\uba74\uc11c \uc2a4\ud0dd\uc774 \uc99d\uac00\ud569\ub2c8\ub2e4. \uac01\uac01\uc758 stack frame\uc740 \ud568\uc218\ub85c \uc804\ub2ec\ub41c \ud30c\ub77c\ubbf8\ud130, \ud568\uc218 \ub0b4\ubd80\uc5d0\uc11c \uc120\uc5b8\ub41c \ubcc0\uc218\ub97c \ud3ec\ud568\ud569\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc774 \uba54\ubaa8\ub9ac\ub294 \ud568\uc218 \uc0ac\uc6a9\uc774 \ub05d\ub098\uba74 100% \ubc18\ud658\ub429\ub2c8\ub2e4. \uc9c0\uc5ed \ubcc0\uc218\ub294 Global, Static \ubcc0\uc218\ucc98\ub7fc \uacf5\uac04\uc744 \uc601\uad6c\uc801\uc73c\ub85c \ucc28\uc9c0\ud558\uc9c0 \uc54a\uae30 \ub54c\ubb38\uc5d0 \ucf54\ub4dc \uc77c\ubd80\uc5d0\uc11c\ub9cc \uc0ac\uc6a9\ub418\ub294 \ubcc0\uc218\ub294 \ud568\uc218\uc548\uc5d0\uc11c \uc0ac\uc6a9\ub418\ub3c4\ub85d \ubc30\ub824\uac00 \ud544\uc694\ud569\ub2c8\ub2e4.



\ucc38\uace0\uc790\ub8cc : https:\/\/learn.adafruit.com\/memories-of-an-arduino\/you-know-you-have-a-memory-problem-when-dot-dot-dot<\/a><\/span>\n","protected":false},"excerpt":{"rendered":"

\ucd9c\ucc98 : http:\/\/www.hardcopyworld.com\/gnuboard5\/bbs\/board.php?bo_table=lecture_pract&wr_id=35 \uc544\ub450\uc774\ub178\uc640 \uc13c\uc11c\ub97c \ub2a5\uc219\ud558\uac8c \ub2e4\ub8e8\uace0 \uac01\uc885 \ud1b5\uc2e0 \ubaa8\ub4c8\uacfc \ub514\uc2a4\ud50c\ub808\uc774 \ubaa8\ub4c8\uc744 \ud65c\uc6a9\ud558\uae30 \uc2dc\uc791\ud558\ub294 \uc911\uae09 \uc720\uc800\ub77c\uba74 \uba54\ubaa8\ub9ac \ubb38\uc81c\ub97c \ud55c\ubc88\ucbe4 \uacaa\uae30 \ub9c8\ub828\uc785\ub2c8\ub2e4. \ubd88\uacfc 2KB\uc758 SRAM\uc744 \uac00\uc9c4 \uc544\ub450\uc774\ub178\uc5d0\uc11c\ub294 \uba54\ubaa8\ub9ac \ubb38\uc81c\uc5d0\uc11c \uc790\uc720\ub85c\uc6b8 \uc218\uac00 \uc5c6\ub294\ub370 \ubc18\ud574 \uc774\ub97c \ub514\ubc84\uae45\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc774 \uc544\ub450\uc774\ub178\uc5d0\uc11c\ub294 \ub9c8\ub545\ud788 \uc5c6\uc2b5\ub2c8\ub2e4. (PC \ud639\uc740 \ub2e4\ub978 \uae30\uae30, \ud50c\ub7ab\ud3fc\uc5d0\uc11c\ub3c4 \uba54\ubaa8\ub9ac \ubb38\uc81c\uac00 \uace8\uce58\uac70\ub9ac\uc778 \uc810\uc740 \uac19\uc9c0\ub9cc…) \uc720\uc77c\ud55c \ub514\ubc84\uae45 \ubc29\ubc95\uc778 Serial \ud568\uc218\ub97c […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[13],"tags":[],"class_list":["post-710","post","type-post","status-publish","format-standard","hentry","category-computing_singleboardcomputer"],"_links":{"self":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/710","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=710"}],"version-history":[{"count":0,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/710\/revisions"}],"wp:attachment":[{"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=710"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=710"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hasu0707.duckdns.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=710"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}