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L'ESP32-CAM prend une photo et l'enregistre sur Google Drive.
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/* | |
L'ESP32-CAM prend une photo et l'enregistre sur Google Drive. | |
Basé sur le sketch de Guillermo Sampallo: | |
https://github.com/gsampallo/esp32cam-gdrive | |
Plus d'informations: | |
https://electroniqueamateur.blogspot.com/2020/05/enregistrement-sur-google-drive-des.html | |
*/ | |
#include "esp_camera.h" | |
#include <WiFi.h> | |
#include <WiFiClientSecure.h> | |
const char* ssid = "**********"; // nom du réseau Wifi | |
const char* password = "**********"; // mot de passe du réseau Wifi | |
// à remplacer par l'url de votre Google Apps Script: | |
String urlScript = "/macros/s/*******************/exec"; | |
const int delaiImage = 60000; // nombre de millisecondes entre 2 enregistrements succesifs | |
const int delaiReponse = 30000; // nombre de millisecondes max d'attente pour la réponse de Google | |
const char* host = "script.google.com"; | |
String nomFichier = "filename=ESP32-CAM.jpg"; | |
String mimeType = "&mimetype=image/jpeg"; | |
String monImage = "&data="; | |
void setup() | |
{ | |
Serial.begin(115200); | |
delay(10); | |
WiFi.mode(WIFI_STA); | |
Serial.println(""); | |
Serial.print("Connexion a "); | |
Serial.println(ssid); | |
WiFi.begin(ssid, password); | |
while (WiFi.status() != WL_CONNECTED) { | |
Serial.print("."); | |
delay(500); | |
} | |
Serial.println(""); | |
Serial.println("Adresse IP: "); | |
Serial.println(WiFi.localIP()); | |
Serial.println(""); | |
camera_config_t config; | |
config.ledc_channel = LEDC_CHANNEL_0; | |
config.ledc_timer = LEDC_TIMER_0; | |
config.pin_d0 = 5; | |
config.pin_d1 = 18; | |
config.pin_d2 = 19; | |
config.pin_d3 = 21; | |
config.pin_d4 = 36; | |
config.pin_d5 = 39; | |
config.pin_d6 = 34; | |
config.pin_d7 = 35; | |
config.pin_xclk = 0; | |
config.pin_pclk = 22; | |
config.pin_vsync = 25; | |
config.pin_href = 23; | |
config.pin_sscb_sda = 26; | |
config.pin_sscb_scl = 27; | |
config.pin_pwdn = 32; | |
config.pin_reset = -1; | |
config.xclk_freq_hz = 20000000; | |
config.pixel_format = PIXFORMAT_JPEG; | |
config.frame_size = FRAMESIZE_VGA; // UXGA|SXGA|XGA|SVGA|VGA|CIF|QVGA|HQVGA|QQVGA | |
config.jpeg_quality = 10; | |
config.fb_count = 1; | |
esp_err_t err = esp_camera_init(&config); | |
if (err != ESP_OK) { | |
Serial.printf("Echec de l'initialisation 0x%x", err); | |
delay(1000); | |
ESP.restart(); | |
} | |
} | |
void loop() { | |
enregistreImage(); | |
delay(delaiImage); | |
} | |
void enregistreImage() { | |
Serial.println("Connexion a " + String(host)); | |
WiFiClientSecure client; | |
if (client.connect(host, 443)) { | |
Serial.println("Connection reussie"); | |
camera_fb_t * fb = NULL; | |
fb = esp_camera_fb_get(); | |
if (!fb) { | |
Serial.println("Echec de la prise de photo "); | |
delay(1000); | |
ESP.restart(); | |
return; | |
} | |
char *input = (char *)fb->buf; | |
char output[base64_enc_len(3)]; | |
String imageFile = ""; | |
for (int i = 0; i < fb->len; i++) { | |
base64_encode(output, (input++), 3); | |
if (i % 3 == 0) imageFile += urlencode(String(output)); | |
} | |
String Data = nomFichier + mimeType + monImage; | |
esp_camera_fb_return(fb); | |
Serial.println("Image envoyee a Google Drive."); | |
client.println("POST " + urlScript + " HTTP/1.1"); | |
client.println("Host: " + String(host)); | |
client.println("Content-Length: " + String(Data.length() + imageFile.length())); | |
client.println("Content-Type: application/x-www-form-urlencoded"); | |
client.println(); | |
client.print(Data); | |
int Index; | |
for (Index = 0; Index < imageFile.length(); Index = Index + 1000) { | |
client.print(imageFile.substring(Index, Index + 1000)); | |
} | |
Serial.println("Attente de la reponse."); | |
long int StartTime = millis(); | |
while (!client.available()) { | |
Serial.print("."); | |
delay(100); | |
if ((StartTime + waitingTime) < millis()) { | |
Serial.println(); | |
Serial.println("Pas de reponse."); | |
break; | |
} | |
} | |
Serial.println(); | |
while (client.available()) { | |
Serial.print(char(client.read())); | |
} | |
} else { | |
Serial.println("Echec de la connexion a " + String(host) + "."); | |
} | |
client.stop(); | |
} | |
/************** Encodage de l'url *******************************/ | |
// urlencode sert à remplacer les caractères indésirables | |
// dans une url (par exemple, remplacer un espace par %20`) | |
//https://github.com/zenmanenergy/ESP8266-Arduino-Examples/ | |
String urlencode(String str) | |
{ | |
String encodedString = ""; | |
char c; | |
char code0; | |
char code1; | |
char code2; | |
for (int i = 0; i < str.length(); i++) { | |
c = str.charAt(i); | |
if (c == ' ') { | |
encodedString += '+'; | |
} else if (isalnum(c)) { | |
encodedString += c; | |
} else { | |
code1 = (c & 0xf) + '0'; | |
if ((c & 0xf) > 9) { | |
code1 = (c & 0xf) - 10 + 'A'; | |
} | |
c = (c >> 4) & 0xf; | |
code0 = c + '0'; | |
if (c > 9) { | |
code0 = c - 10 + 'A'; | |
} | |
code2 = '\0'; | |
encodedString += '%'; | |
encodedString += code0; | |
encodedString += code1; | |
} | |
yield(); | |
} | |
return encodedString; | |
} | |
// *************** Encodage de l'image en base64 ************************* | |
//Copyright (c) 2013 Adam Rudd. | |
//https://github.com/adamvr/arduino-base64 | |
const char PROGMEM b64_alphabet[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" | |
"abcdefghijklmnopqrstuvwxyz" | |
"0123456789+/"; | |
int base64_encode(char *output, char *input, int inputLen) { | |
int i = 0, j = 0; | |
int encLen = 0; | |
unsigned char a3[3]; | |
unsigned char a4[4]; | |
while (inputLen--) { | |
a3[i++] = *(input++); | |
if (i == 3) { | |
a3_to_a4(a4, a3); | |
for (i = 0; i < 4; i++) { | |
output[encLen++] = pgm_read_byte(&b64_alphabet[a4[i]]); | |
} | |
i = 0; | |
} | |
} | |
if (i) { | |
for (j = i; j < 3; j++) { | |
a3[j] = '\0'; | |
} | |
a3_to_a4(a4, a3); | |
for (j = 0; j < i + 1; j++) { | |
output[encLen++] = pgm_read_byte(&b64_alphabet[a4[j]]); | |
} | |
while ((i++ < 3)) { | |
output[encLen++] = '='; | |
} | |
} | |
output[encLen] = '\0'; | |
return encLen; | |
} | |
int base64_enc_len(int plainLen) { | |
int n = plainLen; | |
return (n + 2 - ((n + 2) % 3)) / 3 * 4; | |
} | |
inline void a3_to_a4(unsigned char * a4, unsigned char * a3) { | |
a4[0] = (a3[0] & 0xfc) >> 2; | |
a4[1] = ((a3[0] & 0x03) << 4) + ((a3[1] & 0xf0) >> 4); | |
a4[2] = ((a3[1] & 0x0f) << 2) + ((a3[2] & 0xc0) >> 6); | |
a4[3] = (a3[2] & 0x3f); | |
} |
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Salut,
Il y a une erreur ligne 137 :
if ((StartTime + waitingTime) < millis()) {
Je pense qu'il faut remplacer waitingTime par delaiReponse comme ceci :
if ((StartTime + delaiReponse) < millis()) {
Par contre j'ai suivi ton tuto complet sur ton site et j'ai l'erreur suivante :
Connected to script.google.com failed.
Je n'ai pas la possibilité de choisir "Anyone, even anonymous" dans les choix de publications je ne sais pas si c'est lié,
Est-ce que tu pourrais faire un correctif et une mise a jour du tuto STP ?
Je ne sais pas si l'erreur vient de moi ou d'une modification chez Google...
Merci d'avance
Etienne