devices working

src/device.h

@@ -1,18 +1,30 @@
 #pragma once
 #include <stdint.h>
 #include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdbool.h>
 
-typedef struct {
+#define DEVICE_BUFFER_LENGTH 128
+
+typedef struct Device Device;
+struct Device {
     char name[32];
 
-    void (*sendToDevice)(uint16_t number);
-    uint16_t (*receiveFromDevice)();
-    void (*update)();
-} Device;
+    uint16_t in[DEVICE_BUFFER_LENGTH];
+    uint8_t inPos;
+
+    uint16_t out[DEVICE_BUFFER_LENGTH];
+    uint8_t outPos;
+
+    void (*update)(Device* self);
+};
 
 Device* createDevice(
     const char* name,
-    void (*sendToDevice)(uint16_t number),
-    uint16_t (*receiveFromDevice)(),
-    void (*update)()
-);
+    void (*update)(Device* self)
+);
+
+uint16_t deviceRead(Device* self);
+void deviceSend(Device* self, uint16_t value);
+bool deviceCanRead(Device* self);