Abstracted displayPort from CMS

src/main/drivers/display.c

@@ -0,0 +1,68 @@
+/*
+ * This file is part of Cleanflight.
+ *
+ * Cleanflight is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Cleanflight is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "platform.h"
+
+#include "common/utils.h"
+
+#include "display.h"
+
+// XXX Why is this here? Something wrong?
+// XXX Something like Drawing Context that holds all state variables would be the way...
+int8_t lastCursorPos;
+
+void displayClear(displayPort_t *instance)
+{
+    instance->vTable->clear(instance);
+    instance->cleared = true;
+    instance->lastCursorPos = -1;
+}
+
+void displayBegin(displayPort_t *instance)
+{
+    instance->vTable->begin(instance);
+    instance->vTable->clear(instance);
+}
+
+void displayEnd(displayPort_t *instance)
+{
+    instance->vTable->end(instance);
+}
+
+int displayWrite(displayPort_t *instance, uint8_t x, uint8_t y, char *s)
+{
+    return instance->vTable->write(instance, x, y, s);
+}
+
+void displayHeartbeat(displayPort_t *instance)
+{
+    instance->vTable->heartbeat(instance);
+}
+
+void displayResync(displayPort_t *instance)
+{
+    instance->vTable->resync(instance);
+}
+
+uint16_t displayTxBytesFree(displayPort_t *instance)
+{
+    return instance->vTable->txBytesFree(instance);
+}
+