问题描述
您好,我是微处理器C语言的初学者。我想读取一个“ .bmp”文件,以便对其应用行检测。我已经声明了读取图像的功能。按下编译按钮时会发生此错误:
#include "esp_camera.h"
#include "Arduino.h"
#include "FS.h" // SD Card ESP32
#include "SD_MMC.h" // SD Card ESP32
#include "soc/soc.h" // Disable brownour problems
#include "soc/rtc_cntl_reg.h" // Disable brownour problems
#include "driver/rtc_io.h"
#include <EEPROM.h> // read and write from flash memory
#include <SPI.h>
void imageReader(const char *imgName,int *height,int *width,int *bitdepth,unsigned char *header,unsigned char *_colortable,unsigned char *buf
) // READ AN IMAGE
{
int i;
fs::FS &fs = SD_MMC; //
FILE *file;
file = fopen(imgName,"rb"); // read imgName file ( it is a picture in .bmp format )
if(!file){
Serial.printf("Unable to read image");
}
for(i=0 ; i<54 ; i++){
header[i]=getc(file);
}
*width = *(int * )& header[18]; // width information of the image
*height = *(int * )& header[22]; // height information of image
*bitdepth = *(int *)& header[28];
if(*bitdepth<=8){
fread(_colortable,sizeof(unsigned char),1024,file);
}
fread(buf,( 1600 * 1200 ),file);
fclose();
}
出现此错误。函数'int fclose(FILE *)'的参数太少
解决方法
fclose()
函数需要知道要关闭哪个文件。您需要通过提供“文件”作为参数来告诉它。您要使用fclose(file)
。