add test script

Test/Makefile

@@ -0,0 +1,16 @@
+CC = gcc
+CFLAGS = -Wall -Wextra
+
+SRCS = uart_jpeg.c
+OBJS = $(SRCS:.c=.o)
+
+all: uart_jpeg
+
+uart_jpeg: $(OBJS)
+	$(CC) $(CFLAGS) -o $@ $^
+
+%.o: %.c
+	$(CC) $(CFLAGS) -c $<
+
+clean:
+	rm -f $(OBJS) uart_jpeg

Test/uart_jpeg.c

@@ -0,0 +1,121 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+#include <string.h>
+
+int main()
+{
+    int fd;
+    unsigned char buffer[100000];
+    unsigned char tempBuff[1];
+    // Open the UART device
+    fd = open("/dev/ttyACM0", O_RDWR | O_NOCTTY | O_NDELAY);
+    if (fd == -1)
+    {
+        perror("Error opening UART device");
+        return -1;
+    }
+
+    // Configure the UART settings
+    struct termios options;
+    tcgetattr(fd, &options);
+    cfsetispeed(&options, B115200);
+    cfsetospeed(&options, B115200);
+    options.c_cflag &= ~PARENB;
+    options.c_cflag &= ~CSTOPB;
+    options.c_cflag &= ~CSIZE;
+    options.c_cflag |= CS8;
+    tcsetattr(fd, TCSANOW, &options);
+
+    // Read a single byte from the UART device
+
+    int fileCount = 1;
+
+    while (1)
+    {
+
+        if (read(fd, tempBuff, 1) != 1)
+        {
+            continue;
+        }
+        if (tempBuff[0] != (unsigned char)255)
+        {
+            continue;
+        }
+        if (read(fd, tempBuff, 1) != 1)
+        {
+            continue;
+        }
+        if (tempBuff[0] != (unsigned char)216)
+        {
+            continue;
+        }
+
+        unsigned int currentIndex = 2;
+        buffer[0] = 255;
+        buffer[1] = 216;
+        while (1)
+        {
+
+            if (read(fd, tempBuff, 1) != 1)
+            {
+                continue;
+            }
+            buffer[currentIndex++] = tempBuff[0];
+            if (tempBuff[0] != 0xFF)
+            {
+                continue;
+            }
+            if (read(fd, tempBuff, 1) != 1)
+            {
+                continue;
+            }
+            buffer[currentIndex++] = tempBuff[0];
+            if (tempBuff[0] == 0xD8)
+            {
+                printf("Corrupted File, start over...\n");
+                memset(buffer, 0x00, sizeof(buffer));
+                currentIndex = 2;
+                buffer[0] = 0xFF;
+                buffer[1] = 0xD8;
+                continue;
+            }
+            if (tempBuff[0] == 0xD9)
+            {
+                // END FOUND
+                char fileName[11] = {'0', '0', '0', '0', '0', '.', 'j', 'p', 'e', 'g', '\0'};
+                char secondDigit = (fileCount % 10) + '0';
+                char firstDigit = (fileCount / 10) + '0';
+                fileName[0] = firstDigit;
+                fileName[1] = secondDigit;
+
+                FILE *fp = fopen(fileName, "wb");
+                if (fp == NULL)
+                {
+                    printf("Error opening file!\n");
+                    return 1;
+                }
+
+                for (unsigned int i = 0; i < currentIndex; i++)
+                {
+                    unsigned char myChar = buffer[i];
+                    fwrite(&myChar, sizeof(unsigned char), 1, fp);
+                }
+
+                // Close the file
+                fclose(fp);
+                printf("File %s saved!\n", fileName);
+                memset(buffer, 0x00, sizeof(buffer));
+                fileCount++;
+                break;
+            }
+        }
+    }
+
+    // Close the UART device
+    close(fd);
+
+    return 0;
+}