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接上电池,用一个按钮把rst和gnd接上,按一下按钮就会自动开机发送请求,然后进入深度睡眠,可用于低功耗的物联网开关触发器(如需使用自动唤醒,还要将gpio16接到rst)
: [7 ~4 X7 y6 o3 M. G- #include <ESP8266HTTPClient.h># Q$ E) z: D) q
- #include <ESP8266WiFi.h>
* [$ P1 B! A( p5 s# R2 n - #include <ESP8266WiFiMulti.h>. S: _6 m: z8 n# w4 A
- #include <ESP8266WebServer.h>/ m2 J5 n( L4 p- I- }9 H( K" L2 U
- #include <arduino.h>- n5 L0 a+ ~; v) \" B
- ESP8266WiFiMulti WiFiMulti;9 D% }. F$ p! r8 L
- ESP8266WebServer server(80);% {3 _ c7 n) h* l
- const char* serverIndex = "<form method='POST' action='/update' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>";- h1 N R6 n! ^' ]1 t0 L
- ADC_MODE(ADC_VCC);! P4 B( C& b+ i$ j1 Y+ {! \
- void setup() {$ r; @- D# V1 ~# f* k
- Serial.begin(115200);# V$ t. Z& U# O* ]
- Serial.print("\r\n\n");
4 T' a* B. A1 r, ^& W+ ]* O - pinMode(2,OUTPUT);
0 T) i2 k7 G! a- r3 P9 J; \ - // WIFI& e7 A8 w' N* \1 Y/ }
- WiFi.mode(WIFI_STA);
4 f1 v& N' Q# L* ^ - WiFi.hostname("Sparkle");
, }' u: w2 J# ` - WiFiMulti.addAP("wifi ssid", "wifi password");" D# v& Z% ~5 D1 n( p
- int tryNum = 15;
1 q' P8 E+ ^: v( @8 t2 E - Serial.print("Connect WiFi");; ]; o+ U9 \) i# I3 w& o5 V/ J
- while (WiFiMulti.run() != WL_CONNECTED) {) t$ `+ w& p# _* _( X
- digitalWrite(2,0);
/ {6 o: g& C" a- @ - delay(200);
* B, V% d) k, Z. b ? - digitalWrite(2,1);
1 L$ n) a. [* c* R% z - delay(300);% |7 s3 ?4 w2 J6 s1 {; A! c
- Serial.print(".");
+ j b# U$ c& \" Y9 R; \ - tryNum--;1 x* B _: e& }2 T8 g
- if (tryNum == 0) {7 y3 s L) E0 B0 u* O! _6 m
- // 1min
. o" X+ c/ Z3 B z4 P) T, z, Z - // ESP.deepSleep(60e6);2 T7 r: s. J4 f1 G& P: Y
- ESP.deepSleep(0);
8 H" U4 \. B2 }; k* b" ~! ^- X - }( i; i- U/ u: ~0 j6 O
- }
. S- Z! O- R0 H: V- l! o - Serial.print("\r\n");1 r X9 ]4 L2 b! ]
- digitalWrite(2,1);
0 _+ @. s2 {1 b- b - Serial.print("IP address : ");
# b3 X: w5 V- i/ K0 M/ w6 t1 [6 d - Serial.println(WiFi.localIP());2 B2 y p6 S) d7 q
- server.on("/", HTTP_GET, [](){
8 C, F9 |" l7 t+ o9 @' o0 D - server.sendHeader("Connection", "close");; s& p8 k o$ u$ U5 n2 { |. v' F
- server.send(200, "text/html", serverIndex);
. p, M6 t: U: C% @: |% p - });
% [+ e. `* K) Z, b - server.on("/update", HTTP_POST, [](){5 m- Q K/ w- \. P8 V# M. _
- server.sendHeader("Connection", "close");8 g6 {7 ^" o* M' B7 N* J7 P
- server.send(200, "text/plain", (Update.hasError())?"FAIL":"OK");
5 b: P) p+ B, m# ~$ Y, R9 E - ESP.restart();
: }/ B# W- z8 [7 W/ O# u - },[](){
$ I- M* A- b5 w9 g- c& W5 n - HTTPUpload& upload = server.upload(); ]: N8 J' d, y5 }6 a7 g
- if(upload.status == UPLOAD_FILE_START){
9 U6 v* I: V" i* W2 w - Serial.setDebugOutput(true);
1 o7 m3 e! L( \) r) E! X5 K - Serial.printf("Update: %s\n", upload.filename.c_str());
) z K4 K" B5 B) a7 L' o: w* t - uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;
D! n8 z& @6 B1 t - if(!Update.begin(maxSketchSpace)){! u' I$ g* B1 D7 x/ y
- Update.printError(Serial);
0 |1 L" {5 {4 b# f, v6 o# N, ?* t - }8 s% m- A5 G) H) O: @) q3 K
- } else if(upload.status == UPLOAD_FILE_WRITE){' q7 s- j( ^) @3 z. q& A7 A! r
- if(Update.write(upload.buf, upload.currentSize) != upload.currentSize){
" E) l; r$ n; [2 t: @ - Update.printError(Serial);0 l9 v5 ]' y4 d+ W6 M5 ~
- }
_5 k9 {' E7 @! }7 P# f( @ - } else if(upload.status == UPLOAD_FILE_END){
6 x2 y* q: F9 F' u( E2 \# w - if(Update.end(true)){! n7 f5 ? D3 z' D0 E
- Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);" ?# ?4 D0 t3 b1 V8 X. M7 ~ O6 `( N
- } else {
! I7 y! |4 K; M+ d. T2 Z E2 u+ w - Update.printError(Serial);
/ O8 k1 y- z, V" W2 X* B - }/ w5 o2 p6 M* c: i9 o( `4 R
- Serial.setDebugOutput(false);
9 w& ^' z3 Z. N: N - } ~( X# e- F6 {, y/ x6 Q
- yield(); R) E% g, B3 C( r
- });6 u o+ U- i0 o# \. a- _
- " x }" P" D; ]# S9 N
- digitalWrite(2,0);
$ y% o0 y9 m2 v2 h - mainAction();
. I& g, T6 v3 h3 h4 z - if (digitalRead(0)){9 q1 c6 w4 {0 z9 x
- ESP.deepSleep(0);% p+ H' c. B: K- [9 X; n6 d9 Q
- } else {
+ Z1 U! k* m$ i( S2 o4 t8 j - server.begin();8 v) y! y1 S& x( K' Y1 Y
- }
4 r2 U" e6 ~8 ?( ^; }! q - }
1 q% R# U* w0 D u9 h% n - void loop() {1 ~( v1 l0 ?- A" e" f) n* S
- server.handleClient();
3 x# B0 K( t( Y$ M: z. d K* f* ~ - delay(1);0 Z% e% _* ?/ @1 X/ L
- }
' A. X/ c( p& k. j% B& Y - String doGet(String url){9 e+ s) T C, K' K2 Z
- if ((WiFiMulti.run() == WL_CONNECTED)) {
! T+ Q$ M3 Q5 D - HTTPClient http;$ `2 B/ \3 p+ C! U% G1 G
- Serial.println("[HTTP] begin...");' T, V4 `* `% g6 Z6 F
- if (url.startsWith("https")) {
: P9 A2 @0 p# i( ` }) F: F6 s- H6 ? - http.begin(url, "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38");$ L3 O* Z- ~" I& A% L, n0 j
- } else {0 g: x5 G8 s$ v* |8 {6 \: c
- http.begin(url);
0 Q/ L Y3 t, A5 M3 A - }
' e; A8 H4 ?, V% X* Y - Serial.println("[HTTP] GET...");, l* h7 b; U& j0 {( _' @
- int httpCode = http.GET();$ }% o. F) g& s4 g
- if (httpCode > 0) {9 I5 V6 X) N" R( B( k* F2 a
- Serial.printf("[HTTP] code: %d\n", httpCode);( C& ^* s' ^$ k" w1 a% M: h6 N
- if (httpCode == HTTP_CODE_OK) {
) N* K, N. L" K+ K+ Y* K5 F1 ^ L - String payload = http.getString();2 N7 `% q O0 S# |6 _: F) J
- Serial.println(payload);
9 Z" K# j; K- f I - Serial.print("\r\n");9 ~0 d$ v! B9 `- q* G
- return payload;
, l$ r# b$ f8 J8 Y; m7 Z& U1 Q - }+ A1 K4 o; R* ?% T$ i+ n
- } else {
! L* H) x9 p2 I; Q2 f" P - Serial.printf("[HTTP] GET... failed, error: %s\n",! ]" l2 ^! L4 R4 t9 {
- http.errorToString(httpCode).c_str());& M, \$ z$ \$ Z4 Z* {4 m
- }
/ |7 i$ \" ^0 n; \ - http.end();
/ T# g8 V2 n5 t3 V$ z - return "";0 z/ P8 d5 W& w5 ~2 a
- }0 @/ o: \( V. \+ }5 U0 W
- }; _ Z& }8 G; S1 b9 R( P7 m, I
- void mainAction() {
4 K, F5 m4 _; o$ u( H: l. b- p - // 发送请求% }5 o I3 l" M
- doGet("http://google.cn");
8 W. B, t8 o" E/ j - }, n/ h8 m3 K% m5 k
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