๋ณธ๋ฌธ ๋ฐ”๋กœ๊ฐ€๊ธฐ

์‹œ์Šคํ…œ๊ฐœ๋ฐœ21

RS-485 master/slave ํ†ต์‹ ํ•˜๊ธฐ - ์†Œ์Šค์ฝ”๋“œ ํฌํ•จ https://yonglimlee.tistory.com/entry/485-Serial-%ED%86%B5%EC%8B%A0%ED%95%98%EA%B8%B0?category=734072 485 Serial ํ†ต์‹ ํ•˜๊ธฐ 1. ์ค€๋น„๋ฌผ (1) TTL to RS485 ์ž๋™ ํ๋ฆ„์ œ์–ด ์ปจ๋ฒ„ํ„ฐ ๋ชจ๋“ˆ [SZH-CVBE-010] (2) ์•„๋‘์ด๋…ธ ๋‚˜๋…ธ (Slave#1 ์—ญํ• ) (3) ์•„๋‘์ด๋…ธ ๋ฉ”๊ฐ€ (Slave#2 ์—ญํ• ) (4) ๋ผ์ฆˆ๋ฒ ๋ฆฌํŒŒ์ด (Master ์—ญํ• ) ์•„๋ž˜์˜ ์‚ฌ์ง„์€ TTL to RS485 ์ปจ๋ฒ„ํ„ฐ.. yonglimlee.tistory.com 1. ํ†ต์‹  ๋ฐฉ๋ฒ• - RS-485 2. ๊ตฌ์„ฑ - master node 1๊ฐœ - slave node 2๊ฐœ 3. master์ธก ์†Œ์Šค #include "Definition.h" //๊ตฌ์กฐ์ฒด๊ฐ€ ์„ ์–ธ.. 2019. 10. 17.
nodeMCU ์™€์ดํŒŒ์ด ์Šค์บ”ํ•ด์„œ AP์ด๋ฆ„๊ณผ ๋น„๋ฐ€๋ฒˆํ˜ธ ์•Œ์•„์˜ค๊ธฐ nodeMCU๋Š” ESP8266 ๋ชจ๋“ˆ์ด๋ผ WiFi์— ์ ‘์†๋„ ๊ฐ€๋Šฅํ•˜๊ณ (Station mode), ์Šค์Šค๋กœ๊ฐ€ WiFi๋ฅผ ํ„ฐ๋œจ๋ฆด ์ˆ˜๋„(Soft AP mode) ์žˆ๋‹ค. ๋ชฉํ‘œ ๊ธฐ๋Šฅ (1) ์™€์ดํŒŒ์ด ์Šค์บ”์ด ๊ฐ€๋Šฅํ•˜๋‹ค. (2) ์Šค์บ”ํ•œ ์™€์ดํŒŒ์ด ๋ชฉ๋ก ์ค‘์—์„œ ์™€์ดํŒŒ์ด๋ฅผ ์„ ํƒํ•œ ํ›„, ๋น„๋ฐ€๋ฒˆํ˜ธ๋ฅผ ์ž…๋ ฅ๋ฐ›๋Š”๋‹ค. (3) ์•„๋‘์ด๋…ธ IDE, ์ฆ‰ sktech์—์„œ ์„ ํƒํ•œ ์™€์ดํŒŒ์ด์˜ ์ด๋ฆ„๊ณผ ๋น„๋ฐ€๋ฒˆํ˜ธ๋ฅผ ํ™•์ธํ•  ์ˆ˜ ์žˆ๋‹ค. Step1. ์™€์ดํŒŒ์ด ์Šค์บ”ํ•˜๊ธฐ. (1) ๊ด€๋ จ ํ—ค๋”ํŒŒ์ผ ์ถ”๊ฐ€ #include "ESP8266WiFi.h" #include (2) ์Šค์บ” ๊ธฐ๋Šฅ ์ถ”๊ฐ€ void scanWiFiList() { int numberOfNetworks = WiFi.scanNetworks(); for(int i =0; i 2019. 5. 24.
๋ฐฐ์—ด, ๋ฆฌ์ŠคํŠธ์˜ ๋น…์˜ค ํ‘œ๊ธฐ๋ฒ• ๋ฐฐ์—ด๊ณผ ๋ฆฌ์ŠคํŠธ์˜ ๋น…์˜ค ํ‘œ๊ธฐ๋ฒ• ๋น„๊ต ๋ฐฐ์—ด ๋ฆฌ์ŠคํŠธ ๋‹จ์ˆœ ์ฝ๊ธฐ O(1) O(n) ์‚ฝ์ž… O(n) O(1) 2019. 5. 19.
์˜์‚ฌ ์ฝ”๋“œ ์˜์‚ฌ์ฝ”๋“œ #pseudocode ๋ฌธ์ œ์™€ ํ’€์ด ๋ฐฉ๋ฒ•์„ ๊ฐ„๋‹จํ•œ ์ฝ”๋“œ ํ˜•ํƒœ๋กœ ์„ค๋ช…ํ•œ ๊ฒƒ. ์ฝ”๋“œ์ฒ˜๋Ÿผ ๋ณด์ด์ง€๋งŒ ์‹ค์ œ๋กœ๋Š” ์šฐ๋ฆฌ๊ฐ€ ์‚ฌ์šฉํ•˜๋Š” ๋ง๊ณผ ๋น„์Šทํ•จ. 2019. 5. 19.

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