devices working

src/device.c

@@ -2,11 +2,37 @@
 
 Device* createDevice(
     const char* name,
-    void (*sendToDevice)(uint16_t number),
-    uint16_t (*receiveFromDevice)(),
-    void (*update)()
+    void (*update)(Device* self)
 ) {
     Device* new = malloc(sizeof(Device));
     if (!new)
         return NULL;
+
+    size_t nameLen = strlen(name) + 1;
+    nameLen = nameLen < 32 ? nameLen : 32;
+
+    memcpy(new->name, name, nameLen);
+    new->name[nameLen] = 0;
+
+    new->update = update;
+
+    return new;
+}
+
+uint16_t deviceRead(Device* self) {
+    if (self->inPos == 0)
+        return 0;
+
+    return self->in[--self->inPos];
+}
+
+void deviceSend(Device* self, uint16_t value) {
+    if (self->outPos == DEVICE_BUFFER_LENGTH)
+        return;
+
+    self->out[self->outPos++] = value;
+}
+
+bool deviceCanRead(Device* self) {
+    return self->inPos > 0;
 }