Hi Class,
From what I researched on google this error seems to be a dilemma.
I already configured the ESP32 board to 1.04 and it didn't help, I went back to 1.06. I'm using IDE 1.8.16. And I put both base64.h and cpp files in the same scketch folder, but then it gives a stray error and it doesn't compile.
Does anyone know how to resolve?
I'm compiling for the AI-THINKER ESP32-CAM
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "Base64.h"
#include "esp_camera.h"
// WARNING!!! Make sure that you have either selected ESP32 Wrover Module,
// or another board which has PSRAM enabled
//CAMERA_MODEL_AI_THINKER
#define PWDN_GPIO_NUM 32
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 0
#define SIOD_GPIO_NUM 26
#define SIOC_GPIO_NUM 27
#define Y9_GPIO_NUM 35
#define Y8_GPIO_NUM 34
#define Y7_GPIO_NUM 39
#define Y6_GPIO_NUM 36
#define Y5_GPIO_NUM 21
#define Y4_GPIO_NUM 19
#define Y3_GPIO_NUM 18
#define Y2_GPIO_NUM 5
#define VSYNC_GPIO_NUM 25
#define HREF_GPIO_NUM 23
#define PCLK_GPIO_NUM 22
void setup()
{
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
Serial.begin(115200);
delay(10);
camera_config_t config;
config.ledc_channel = LEDC_CHANNEL_0;
config.ledc_timer = LEDC_TIMER_0;
config.pin_d0 = Y2_GPIO_NUM;
config.pin_d1 = Y3_GPIO_NUM;
config.pin_d2 = Y4_GPIO_NUM;
config.pin_d3 = Y5_GPIO_NUM;
config.pin_d4 = Y6_GPIO_NUM;
config.pin_d5 = Y7_GPIO_NUM;
config.pin_d6 = Y8_GPIO_NUM;
config.pin_d7 = Y9_GPIO_NUM;
config.pin_xclk = XCLK_GPIO_NUM;
config.pin_pclk = PCLK_GPIO_NUM;
config.pin_vsync = VSYNC_GPIO_NUM;
config.pin_href = HREF_GPIO_NUM;
config.pin_sscb_sda = SIOD_GPIO_NUM;
config.pin_sscb_scl = SIOC_GPIO_NUM;
config.pin_pwdn = PWDN_GPIO_NUM;
config.pin_reset = RESET_GPIO_NUM;
config.xclk_freq_hz = 20000000;
config.pixel_format = PIXFORMAT_JPEG;
//init with high specs to pre-allocate larger buffers
if(psramFound()){
config.frame_size = FRAMESIZE_UXGA;
config.jpeg_quality = 10; //0-63 lower number means higher quality
config.fb_count = 2;
} else {
config.frame_size = FRAMESIZE_SVGA;
config.jpeg_quality = 12; //0-63 lower number means higher quality
config.fb_count = 1;
}
// camera init
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("Camera init failed with error 0x%x", err);
delay(1000);
ESP.restart();
}
//drop down frame size for higher initial frame rate
sensor_t * s = esp_camera_sensor_get();
s->set_framesize(s, FRAMESIZE_QQVGA); // UXGA|SXGA|XGA|SVGA|VGA|CIF|QVGA|HQVGA|QQVGA
Serial.println(Photo2Base64());
}
void loop()
{
delay(10000);
}
String Photo2Base64() {
camera_fb_t * fb = NULL;
fb = esp_camera_fb_get();
if(!fb) {
Serial.println("Camera capture failed");
return "";
}
String imageFile = "data:image/jpeg;base64,";
char *input = (char *)fb->buf;
char output[base64_enc_len(3)];
for (int i=0;i<fb->len;i++) {
base64_encode(output, (input++), 3);
if (i%3==0) imageFile += urlencode(String(output));
}
esp_camera_fb_return(fb);
return imageFile;
}
//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;
//encodedString+=code2;
}
yield();
}
return encodedString;
}