diff --git a/capture_screen/.DS_Store b/capture_screen/.DS_Store
new file mode 100644
index 0000000..8f70268
Binary files /dev/null and b/capture_screen/.DS_Store differ
diff --git a/capture_screen/.gitignore b/capture_screen/.gitignore
new file mode 100644
index 0000000..e2e5010
--- /dev/null
+++ b/capture_screen/.gitignore
@@ -0,0 +1,2 @@
+# build dir
+build
\ No newline at end of file
diff --git a/capture_screen/CMakeLists.txt b/capture_screen/CMakeLists.txt
new file mode 100644
index 0000000..b53f7ef
--- /dev/null
+++ b/capture_screen/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.10)
+
+set(CMAKE_OSX_ARCHITECTURES arm64)
+
+message("-- Cmake running on platform: " ${CMAKE_HOST_SYSTEM_NAME})
+
+project(capture_screen)
+
+# add the sources here
+set(sources
+    #src/main.c
+    src/serial_comm.c
+    #src/capture_api.c
+    src/hex_dump.c
+)
+
+add_executable(capture_screen ${sources})
+
+target_include_directories(capture_screen PRIVATE inc/)
+target_link_libraries(capture_screen PRIVATE "-framework CoreGraphics -pthread")
diff --git a/capture_screen/code-format.sh b/capture_screen/code-format.sh
new file mode 100755
index 0000000..9114be3
--- /dev/null
+++ b/capture_screen/code-format.sh
@@ -0,0 +1 @@
+./tools/format.sh --recursive "*.c" "*.h"
diff --git a/capture_screen/inc/binary_tree.h b/capture_screen/inc/binary_tree.h
new file mode 100644
index 0000000..7e2627e
--- /dev/null
+++ b/capture_screen/inc/binary_tree.h
@@ -0,0 +1,27 @@
+#ifndef _BINARY_TREE_H_
+#define _BINARY_TREE_H_
+
+#include <stdint.h>
+
+///Node structure of binary tree
+struct node_t {
+    struct node_t *left_child;
+    struct node_t *right_child;
+};
+
+typedef struct node_t node;
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+node *bin_tr_new_node(void);
+void bin_tr_print_node(node *root_node);
+node *bin_tr_insert_node(node *node);
+uint8_t bin_tr_is_anomaly(node *root_node);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/capture_screen/inc/hex_dump.h b/capture_screen/inc/hex_dump.h
new file mode 100644
index 0000000..2a69707
--- /dev/null
+++ b/capture_screen/inc/hex_dump.h
@@ -0,0 +1,18 @@
+#ifndef _HEX_DUMP_H_
+#define _HEX_DUMP_H_
+
+#include <stdint.h>
+
+#define VARIABLE_PTR_STRGFY(var) var, #var
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void hex_dump(uint8_t *buffer, char *var_name, size_t len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
\ No newline at end of file
diff --git a/capture_screen/src/hex_dump.c b/capture_screen/src/hex_dump.c
new file mode 100644
index 0000000..6aa9eae
--- /dev/null
+++ b/capture_screen/src/hex_dump.c
@@ -0,0 +1,37 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+void hex_dump(uint8_t *buffer, char *var_name, size_t len)
+{
+    printf("\r\n%s - length:%zu\r\n", var_name, len);
+    printf("HEX\t\t\t\t\t\t   ASCII\n");
+    printf("---\t\t\t\t\t\t   -----\n");
+    for (int i = 0; i < len; i++) {
+        printf("%02x ", buffer[i]);
+        if ((i + 1) % 8 == 0) {
+            printf(" ");
+        } \
+        if ((i + 1) % 16 == 0) {
+            printf(" ");
+            for (int j = i - 15; j <= i; j++) {
+                printf("%c", buffer[j]);
+            }
+            printf("\n");
+        }
+    }
+    if (len % 16 != 0) {
+        int remaining = len % 16;
+        for (int i = 0; i < 16 - remaining; i++) {
+            printf("   ");
+            if ((i + 1 + len - remaining) % 8 == 0) {
+                printf(" ");
+            }
+        }
+        printf("  ");
+        for (int i = len - remaining; i < len; i++) {
+            printf("%c", buffer[i]);
+        } \
+        printf("\n");
+    }
+}
diff --git a/capture_screen/src/main.c b/capture_screen/src/main.c
new file mode 100644
index 0000000..49a3d3f
--- /dev/null
+++ b/capture_screen/src/main.c
@@ -0,0 +1,60 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ApplicationServices/ApplicationServices.h>
+
+void CaptureScreen(const char *outputFileName)
+{
+    // Get the main screen dimensions
+    CGRect screenBounds = CGDisplayBounds(CGMainDisplayID());
+    int screenWidth = (int)CGRectGetWidth(screenBounds);
+    int screenHeight = (int)CGRectGetHeight(screenBounds);
+
+    // Create a bitmap context for the screenshot
+    CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+    CGContextRef context = CGBitmapContextCreate(NULL, screenWidth, screenHeight, 8, screenWidth * 4, colorSpace, kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Little);
+
+    // Capture the screen into the bitmap context
+    CGImageRef screenshot = CGDisplayCreateImage(CGMainDisplayID());
+    CGContextDrawImage(context, screenBounds, screenshot);
+    CGImageRelease(screenshot);
+
+    // Get the bitmap data
+    unsigned char *pixels = CGBitmapContextGetData(context);
+    printf("RES: %d x %d\r\n", screenWidth, screenHeight);
+
+    // Iterate through the pixel data and print RGB values to the console
+    for (int y = 1331; y < screenHeight; ++y) {
+        for (int x = 0; x < screenWidth; ++x) {
+            // Calculate the index of the current pixel in the pixel array
+            int index = y * screenWidth * 4 + x * 4;
+
+            // Extract RGB values
+            unsigned char red = pixels[index + 2];
+            unsigned char green = pixels[index + 1];
+            unsigned char blue = pixels[index];
+
+            if (1) {
+                // Print RGB values to the console
+                printf("Pixel at (%d, %d): R=%u, G=%u, B=%u\n", x, y, red, green, blue);
+            }
+        }
+    }
+
+    // Save or process the pixel data as needed
+    // Example: Save to a file
+    FILE *outputFile = fopen(outputFileName, "wb");
+    if (outputFile != NULL) {
+        fwrite(pixels, 1, screenWidth * screenHeight * 4, outputFile);
+        fclose(outputFile);
+    }
+
+    // Cleanup
+    CGContextRelease(context);
+    CGColorSpaceRelease(colorSpace);
+}
+
+int main()
+{
+    CaptureScreen("screenshot.bmp");
+    return 0;
+}
diff --git a/capture_screen/src/serial_comm.c b/capture_screen/src/serial_comm.c
new file mode 100644
index 0000000..fdd91c2
--- /dev/null
+++ b/capture_screen/src/serial_comm.c
@@ -0,0 +1,185 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <pthread.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <termios.h>
+
+#define MAX_QUEUE_SIZE 256
+
+typedef struct {
+    char data[MAX_QUEUE_SIZE];
+    size_t front;
+    size_t rear;
+    pthread_mutex_t mutex;
+    pthread_cond_t not_empty;
+} Queue;
+
+void initializeQueue(Queue *queue)
+{
+    queue->front = 0;
+    queue->rear = 0;
+    pthread_mutex_init(&queue->mutex, NULL);
+    pthread_cond_init(&queue->not_empty, NULL);
+}
+
+void enqueue(Queue *queue, char item)
+{
+    pthread_mutex_lock(&queue->mutex);
+
+    while ((queue->rear + 1) % MAX_QUEUE_SIZE == queue->front) {
+        pthread_cond_wait(&queue->not_empty, &queue->mutex);
+    }
+
+    queue->data[queue->rear] = item;
+    queue->rear = (queue->rear + 1) % MAX_QUEUE_SIZE;
+
+    pthread_cond_signal(&queue->not_empty);
+    pthread_mutex_unlock(&queue->mutex);
+}
+
+char dequeue(Queue *queue)
+{
+    pthread_mutex_lock(&queue->mutex);
+
+    while (queue->front == queue->rear) {
+        pthread_cond_wait(&queue->not_empty, &queue->mutex);
+    }
+
+    char item = queue->data[queue->front];
+    queue->front = (queue->front + 1) % MAX_QUEUE_SIZE;
+
+    pthread_cond_signal(&queue->not_empty);
+    pthread_mutex_unlock(&queue->mutex);
+
+    return item;
+}
+
+int openSerialPort(const char *portName)
+{
+    int serialPort = open(portName, O_RDWR | O_NOCTTY | O_NONBLOCK);
+    if (serialPort == -1) {
+        perror("Error opening serial port");
+        exit(EXIT_FAILURE);
+    }
+    return serialPort;
+}
+
+void configureSerialPort(int serialPort, speed_t baudRate)
+{
+    struct termios tty;
+    if (tcgetattr(serialPort, &tty) != 0) {
+        perror("Error getting serial port attributes");
+        close(serialPort);
+        exit(EXIT_FAILURE);
+    }
+
+    cfsetospeed(&tty, baudRate);
+    cfsetispeed(&tty, baudRate);
+
+    tty.c_cflag &= ~PARENB;
+    tty.c_cflag &= ~CSTOPB;
+    tty.c_cflag &= ~CSIZE;
+    tty.c_cflag |= CS8;
+
+    tty.c_cflag &= ~CRTSCTS;
+    tty.c_cflag |= CREAD | CLOCAL;
+
+    tty.c_lflag &= ~(ICANON | ECHO | ECHOE | ISIG);
+
+    tty.c_cc[VMIN] = 1;
+    tty.c_cc[VTIME] = 1;
+
+    if (tcsetattr(serialPort, TCSANOW, &tty) != 0) {
+        perror("Error setting serial port attributes");
+        close(serialPort);
+        exit(EXIT_FAILURE);
+    }
+}
+
+void *senderTask(void *arg)
+{
+    printf("%s task started!\r\n", __func__);
+
+    Queue *sendQueue = (Queue *)arg;
+
+    int serialPort = openSerialPort("/dev/tty.usbmodemmeplight1");  // Replace with your serial port
+    configureSerialPort(serialPort, B230400);
+
+    while (1) {
+        //char dataToSend = dequeue(sendQueue);
+        char *test_write_buff = "test_write_ buffer hamza test. 1 2 3 4 5 6 7 8 9 0\r\n";
+
+        write(serialPort, test_write_buff, strlen(test_write_buff));
+        usleep(1000000);  // Adjust sleep time to 1 second
+        printf("aaa\r\n");
+    }
+}
+
+void *receiverTask(void *arg)
+{
+
+    printf("%s task started!\r\n", __func__);
+
+    Queue *receiveQueue = (Queue *)arg;
+
+    int serialPort = openSerialPort("/dev/tty.usbmodemmeplight1");  // Replace with your serial port
+    configureSerialPort(serialPort, B230400);
+
+    while (1) {
+        char receivedData;
+        ssize_t bytesRead = read(serialPort, &receivedData, 1);
+        if (bytesRead > 0) {
+            enqueue(receiveQueue, receivedData);
+        }
+    }
+}
+
+void *readProcessTask(void *arg)
+{
+
+    printf("%s task started!\r\n", __func__);
+
+    Queue *readQueue = (Queue *)arg;
+
+    while (1) {
+        char processedData = dequeue(readQueue);
+        // Process the received data (replace this with your processing logic)
+        printf("%c", processedData);
+    }
+}
+
+int main()
+{
+    Queue sendQueue, receiveQueue, readQueue;
+    initializeQueue(&sendQueue);
+    initializeQueue(&receiveQueue);
+    initializeQueue(&readQueue);
+
+    pthread_t senderThread, receiverThread, readProcessThread;
+
+    pthread_create(&senderThread, NULL, senderTask, (void *)&sendQueue);
+    pthread_create(&receiverThread, NULL, receiverTask, (void *)&receiveQueue);
+    pthread_create(&readProcessThread, NULL, readProcessTask, (void *)&receiveQueue);
+
+    pthread_join(senderThread, NULL);
+    pthread_join(receiverThread, NULL);
+    pthread_join(readProcessThread, NULL);
+    printf("aaa");
+
+    while (1) {
+        printf("aaa");
+        sleep(1);
+    }
+
+    // Cleanup: Destroy mutex and condition variables
+    pthread_mutex_destroy(&sendQueue.mutex);
+    pthread_cond_destroy(&sendQueue.not_empty);
+    pthread_mutex_destroy(&receiveQueue.mutex);
+    pthread_cond_destroy(&receiveQueue.not_empty);
+    pthread_mutex_destroy(&readQueue.mutex);
+    pthread_cond_destroy(&readQueue.not_empty);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/capture_screen/tools/format.sh b/capture_screen/tools/format.sh
new file mode 100755
index 0000000..f1fff90
--- /dev/null
+++ b/capture_screen/tools/format.sh
@@ -0,0 +1,15 @@
+astyle \
+	--style=otbs \
+	--attach-namespaces \
+	--attach-classes \
+	--indent=spaces=4 \
+	--convert-tabs \
+	--align-pointer=name \
+	--align-reference=name \
+	--keep-one-line-statements \
+	--pad-header \
+	--pad-oper \
+	--pad-comma \
+	--unpad-paren \
+	--suffix=none \
+	"$@"