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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)
$ N7 H0 K- W$ d2 y- #include <ESP8266HTTPClient.h>: g5 }6 ^% P& _1 H$ [1 o$ Z
- #include <ESP8266WiFi.h>1 t. q0 \8 S# }& b1 U
- #include <ESP8266WiFiMulti.h>
; Y) Z" z; w5 N2 o0 @: H - #include <ESP8266WebServer.h>
4 I9 o1 }4 S2 K. `; L+ c - #include <arduino.h>4 ^1 E4 I$ Y q7 A
- ESP8266WiFiMulti WiFiMulti;
' f% e( k: V6 Y+ Q6 T - ESP8266WebServer server(80);
9 i" R+ c! C+ L( D - const char* serverIndex = "<form method='POST' action='/update' enctype='multipart/form-data'><input type='file' name='update'><input type='submit' value='Update'></form>";
# Z3 m2 b9 l* R; I4 f& K8 `! U - ADC_MODE(ADC_VCC);8 o& l f, {$ ^; A' n6 a) O" x" e
- void setup() {! i3 J8 V0 r G4 n6 C; s: f8 O8 v& H
- Serial.begin(115200);
) L2 |9 O0 @- o5 A1 A - Serial.print("\r\n\n");
! N' T3 k+ b' m p4 ^ a2 v5 b n* n - pinMode(2,OUTPUT);
7 x/ R" `1 ]/ X* L - // WIFI
/ @3 t: b r0 z/ D - WiFi.mode(WIFI_STA);
1 n! f$ V0 J2 N4 m' r6 S - WiFi.hostname("Sparkle");
% l( I- s: O# g- h, L3 G: h - WiFiMulti.addAP("wifi ssid", "wifi password");
|, }' i! n6 N6 E2 x4 B - int tryNum = 15;
! P, b) g2 \, E, H - Serial.print("Connect WiFi");: Y2 ^- `' D# h
- while (WiFiMulti.run() != WL_CONNECTED) {
& k5 W O# k. g' A - digitalWrite(2,0);. h/ K1 A. ~$ ?1 g
- delay(200);! q% Q3 t& t& }, X
- digitalWrite(2,1);
3 I u; r1 }2 n9 p; f' N - delay(300);" C; r4 P$ P( Z; ]) [
- Serial.print(".");
$ b6 @* ~* f3 J; J. c; a( { - tryNum--;
! B E, y* \; A8 w0 } w - if (tryNum == 0) {% B8 P. h/ a! E. n
- // 1min6 H6 r+ U, u2 C$ g X1 n8 r
- // ESP.deepSleep(60e6);- `9 L: H5 ~/ w4 L
- ESP.deepSleep(0);
9 M4 p [+ B' o8 S* i; R, C - }
/ @; x& T: O; c4 X. T - }
3 m% G% m' q) v0 u4 D5 @& Q1 a - Serial.print("\r\n");% T' e8 L3 } T% Q0 u& I6 W. i
- digitalWrite(2,1);
4 `& N, R4 b/ X2 O - Serial.print("IP address : ");0 ?7 D! I$ X% M' ^. ]9 y
- Serial.println(WiFi.localIP());; U$ Y- S( s4 L6 I) l
- server.on("/", HTTP_GET, [](){4 u! W9 ^6 R5 v
- server.sendHeader("Connection", "close");+ B. q: ^+ ]4 H8 t. m
- server.send(200, "text/html", serverIndex);
/ u8 _. j7 X: H7 i4 m2 P* q1 R* N# _ - });; {) u( E. x8 y9 a. L5 S
- server.on("/update", HTTP_POST, [](){
5 J9 w8 O7 e; {/ y* ` - server.sendHeader("Connection", "close");
' [6 @8 c; y& Y2 Y- c, P) N/ ~0 b - server.send(200, "text/plain", (Update.hasError())?"FAIL":"OK");1 {2 F0 }8 p) A) J. v& [, g
- ESP.restart();) G0 G/ j- \: N2 z5 m2 k7 @( c
- },[](){: m5 F4 G" ?* B; g1 j4 s6 u
- HTTPUpload& upload = server.upload();6 U0 X* v+ t; c) Y! C3 w
- if(upload.status == UPLOAD_FILE_START){, Q2 t* \$ \6 d: t" }' ~" V
- Serial.setDebugOutput(true);
7 m F6 V$ ~& W4 Y' _ - Serial.printf("Update: %s\n", upload.filename.c_str());1 B3 a, A2 u' O% p, l" m6 h
- uint32_t maxSketchSpace = (ESP.getFreeSketchSpace() - 0x1000) & 0xFFFFF000;' K7 e# J6 W1 Y
- if(!Update.begin(maxSketchSpace)){& _% Q; K" K3 A7 }0 I; x
- Update.printError(Serial);
7 [6 ]% z1 { v# J, v% I - }- b9 c% _) V, _, ]
- } else if(upload.status == UPLOAD_FILE_WRITE){
' \8 G" A7 V) w7 R4 M; N - if(Update.write(upload.buf, upload.currentSize) != upload.currentSize){
* v/ R+ C) ^% C1 R( c0 Y4 u - Update.printError(Serial);
Q3 k+ O3 G, }3 B& N& B - }0 A8 v# ~- c- D& \8 @% u3 h5 B
- } else if(upload.status == UPLOAD_FILE_END){ Q9 W" G: w% ]; o; Z/ c
- if(Update.end(true)){1 I. s0 i3 b, C: }+ y7 G% t) O9 Y
- Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
. N0 ]8 {" D: B: |, m - } else {8 H- D$ U7 W: f
- Update.printError(Serial);
U, @+ w3 D0 I2 W6 v/ \- a - }. ~) w! C! ^0 I, B8 @) ?
- Serial.setDebugOutput(false);
6 l f: o' C6 |. P& u - }
Q% p" h- l" f2 B- ? - yield();7 f8 K1 f+ s$ f! h, f; ? a2 m) D
- });' |4 g" p! c+ p( O, Y' P0 M% X
- & C2 N: D& G( C! ]5 h
- digitalWrite(2,0);8 {8 E4 K3 N* I7 m% k" W
- mainAction();
: i' w$ Y. z6 k2 W1 j- x! p - if (digitalRead(0)){
- c5 q A, b% C& T - ESP.deepSleep(0);1 P+ u+ \, p% k! y4 B% \9 f) m
- } else {/ i! m! H0 D/ \0 w! D3 z' @$ x
- server.begin();
5 E D1 S3 y I# p f9 f - }, [/ C4 H0 C# U# A% ~
- }! [+ _9 Y4 @( @1 T5 ^
- void loop() {
9 I" S8 ^" H- B# O/ y - server.handleClient();
2 B. V) r0 j- O* a! P - delay(1);+ J0 }4 c% f' N' W2 d" L7 J7 U. j
- }" i" `2 Q# h, U4 H7 v
- String doGet(String url){
5 [* n5 k! N K - if ((WiFiMulti.run() == WL_CONNECTED)) {- j7 {, T! b. f
- HTTPClient http;5 i' x5 c5 E3 E
- Serial.println("[HTTP] begin...");# C# t3 E- @2 Y0 q$ Y Z
- if (url.startsWith("https")) {
0 f6 v; Y8 W- |! L - http.begin(url, "7a 9c f4 db 40 d3 62 5a 6e 21 bc 5c cc 66 c8 3e a1 45 59 38");0 |9 _- T2 D, r# n
- } else {) R* u; y1 ~+ |4 ]' ~- Z! _7 \% e4 b
- http.begin(url);
, B6 B" J2 t4 } H$ b/ y7 I - }* q4 f+ e H/ P8 Y
- Serial.println("[HTTP] GET...");2 j3 A. ~) F" a/ o! C( I0 ]
- int httpCode = http.GET();
" o# J' S- {% u& b% k% D% g - if (httpCode > 0) {
8 |) s2 R5 {' v" \; H - Serial.printf("[HTTP] code: %d\n", httpCode);
?2 ^1 x* T7 F$ H3 x7 { - if (httpCode == HTTP_CODE_OK) {) y0 a9 `# D" @ y1 G" \- r8 M
- String payload = http.getString();
' Y& c" m* o% _( E( Y+ {# V - Serial.println(payload); l* K9 B( F2 s# Z" _$ }- I
- Serial.print("\r\n");! H2 ?( Y' E( V1 {; Q' V
- return payload;
2 `) f/ q) ~! E( S4 X - }: i* D3 _+ ~8 w9 A
- } else {
% B; Z6 I: ~) q; n+ f' P( i - Serial.printf("[HTTP] GET... failed, error: %s\n",% k. v6 q) m5 h2 {1 t
- http.errorToString(httpCode).c_str());2 b0 q/ C5 g/ c3 u( F
- }2 n+ e4 t& E* Q: ]
- http.end();
6 p9 A, T8 D2 ?7 S% w! Y; @ - return "";$ {5 p$ o i5 `6 A P/ h
- }
0 i! H: f b( J# E7 e# ^. i |- U - }
# G2 i2 }$ {. p+ D - void mainAction() {
: ?: y$ c0 b* } - // 发送请求3 d% k8 k \2 p5 \- B
- doGet("http://google.cn");" i: w$ n6 r; f
- }
8 u* n* ?' {. R Y! R6 r8 f
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