Esp32 cam QR code decoding failed error
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Hey! I am using this library with my own sketch and everything seemed to work well the first few times but now it always shows a "Decoding Failed" error every time I try to decode a Qr code. As I am not a pro in Arduino, can someone direct me to where my mistake is?
Note: I once tried to establish a com between Esp32 and the cam module does that happen to be a problem? Also, the cam module once fell from my hand. But the camera is working pretty fine.
This is my code ----
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/* ======================================== Including the libraries. /
#include "esp_camera.h"
#include "soc/soc.h"
#include "soc/rtc_cntl_reg.h"
#include "quirc.h"
/ ======================================== */
// creating a task handle
TaskHandle_t QRCodeReader_Task;
/* ======================================== Select camera model */
#define CAMERA_MODEL_AI_THINKER
/* ======================================== */
/* ======================================== GPIO of camera models */
#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
/* ======================================== Variables declaration */
struct QRCodeData
{
bool valid;
int dataType;
uint8_t payload[1024];
int payloadLen;
};
struct quirc *q = NULL;
uint8_t image = NULL;
camera_fb_t * fb = NULL;
struct quirc_code code;
struct quirc_data data;
quirc_decode_error_t err;
struct QRCodeData qrCodeData;
String QRCodeResult = "";
/ ======================================== */
/* ________________________________________________________________________________ VOID SETTUP() */
void setup() {
// Disable brownout detector.
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0);
/* ---------------------------------------- Init serial communication speed (baud rate). /
Serial.begin(112500);
Serial.setDebugOutput(true);
Serial.println();
/ ---------------------------------------- */
/* ---------------------------------------- Camera configuration. */
Serial.println("Start configuring and initializing the camera...");
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 = 10000000;
config.pixel_format = PIXFORMAT_GRAYSCALE;
config.frame_size = FRAMESIZE_QVGA;
config.jpeg_quality = 15;
config.fb_count = 1;
#if defined(CAMERA_MODEL_ESP_EYE)
pinMode(13, INPUT_PULLUP);
pinMode(14, INPUT_PULLUP);
#endif
esp_err_t err = esp_camera_init(&config);
if (err != ESP_OK) {
Serial.printf("Camera init failed with error 0x%x", err);
ESP.restart();
}
sensor_t * s = esp_camera_sensor_get();
s->set_framesize(s, FRAMESIZE_QVGA);
Serial.println("Configure and initialize the camera successfully.");
Serial.println();
/* ---------------------------------------- */
/* ---------------------------------------- create "QRCodeReader_Task" using the xTaskCreatePinnedToCore() function /
xTaskCreatePinnedToCore(
QRCodeReader, / Task function. /
"QRCodeReader_Task", / name of task. /
10000, / Stack size of task /
NULL, / parameter of the task /
1, / priority of the task /
&QRCodeReader_Task, / Task handle to keep track of created task /
0); / pin task to core 0 /
/ ---------------------------------------- /
}
/ ________________________________________________________________________________ /
void loop() {
delay(100);
}
/ ________________________________________________________________________________ */
/* ________________________________________________________________________________ The function to be executed by "QRCodeReader_Task" /
// This function is to instruct the camera to take or capture a QR Code image, then it is processed and translated into text.
void QRCodeReader( void * pvParameters ){
/ ---------------------------------------- /
Serial.println("QRCodeReader is ready.");
Serial.print("QRCodeReader running on core ");
Serial.println(xPortGetCoreID());
Serial.println();
/ ---------------------------------------- */
/* ---------------------------------------- Loop to read QR Code in real time. */
while(1){
q = quirc_new();
if (q == NULL){
Serial.print("can't create quirc object\r\n");
continue;
}
fb = esp_camera_fb_get();
if (!fb)
{
Serial.println("Camera capture failed");
continue;
}
quirc_resize(q, fb->width, fb->height);
image = quirc_begin(q, NULL, NULL);
memcpy(image, fb->buf, fb->len);
quirc_end(q);
int count = quirc_count(q);
if (count > 0) {
quirc_extract(q, 0, &code);
err = quirc_decode(&code, &data);
if (err){
Serial.println("Decoding FAILED");
QRCodeResult = "Decoding FAILED";
} else {
Serial.printf("Decoding successful:\n");
dumpData(&data);
}
Serial.println();
}
esp_camera_fb_return(fb);
fb = NULL;
image = NULL;
quirc_destroy(q);
}
/* ---------------------------------------- /
}
/ ________________________________________________________________________________ */
/* ________________________________________________________________________________ Function to display the results of reading the QR Code on the serial monitor. */
void dumpData(const struct quirc_data *data)
{
Serial.printf("Version: %d\n", data->version);
Serial.printf("ECC level: %c\n", "MLHQ"[data->ecc_level]);
Serial.printf("Mask: %d\n", data->mask);
Serial.printf("Length: %d\n", data->payload_len);
Serial.printf("Payload: %s\n", data->payload);
QRCodeResult = (const char *)data->payload;
}
`