Merge pull request #2 from yezzfusl/test

Implement CAN Message Filtering and Decoding.

Author: yezzfusl

can_analyzer

@@ -0,0 +1,17 @@
+#include "can_decode.h"
+#include <stdio.h>
+
+void decode_can_message(const struct can_frame *frame) {
+    printf("Decoded message: ");
+    
+    switch (frame->can_id) {
+        case 0x123:
+            printf("Engine Temperature: %d°C\n", frame->data[0]);
+            break;
+        case 0x456:
+            printf("Vehicle Speed: %d km/h\n", frame->data[0]);
+            break;
+        default:
+            printf("Unknown message type\n");
+    }
+}

obj/can_decode.o

@@ -0,0 +1,8 @@
+#ifndef CAN_DECODE_H
+#define CAN_DECODE_H
+
+#include <linux/can.h>
+
+void decode_can_message(const struct can_frame *frame);
+
+#endif

obj/can_filter.o

@@ -0,0 +1,5 @@
+#include "can_filter.h"
+
+int apply_can_filter(const struct can_frame *frame, const struct can_filter *filter) {
+    return (frame->can_id & filter->can_mask) == (filter->can_id & filter->can_mask);
+}

obj/can_interface.o

@@ -0,0 +1,8 @@
+#ifndef CAN_FILTER_H
+#define CAN_FILTER_H
+
+#include <linux/can.h>
+
+int apply_can_filter(const struct can_frame *frame, const struct can_filter *filter);
+
+#endif

obj/main.o

@@ -50,3 +50,7 @@ int can_receive(int socket_fd, struct can_frame *frame) {
 void can_close(int socket_fd) {
     close(socket_fd);
 }
+
+void set_can_filter(int socket_fd, struct can_filter *filter) {
+    setsockopt(socket_fd, SOL_CAN_RAW, CAN_RAW_FILTER, filter, sizeof(struct can_filter));
+}