Initial commit

include/pros/llemu.h

@@ -0,0 +1,54 @@
+#ifndef _PROS_LLEMU_H_
+#define _PROS_LLEMU_H_
+
+// TODO:? Should there be weak symbols for the C api in here as well?
+
+#include "stdint.h"
+
+/******************************************************************************/
+/**                        LLEMU Conditional Include                         **/
+/**                                                                          **/
+/**   When the libvgl versions of llemu.h is present, common.mk will         **/
+/**   define a macro which lets this file know that liblvgl's llemu.h   is   **/
+/**   present. If it is, we conditionally include it so that it gets         **/
+/**   included into api.h.                                                   **/
+/******************************************************************************/
+#ifdef _PROS_INCLUDE_LIBLVGL_LLEMU_H
+#include "liblvgl/llemu.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+namespace pros {
+namespace c {
+#endif//__cplusplus
+
+/**
+ * Displays a formatted string on the emulated three-button LCD screen.
+ *
+ * This function uses the following values of errno when an error state is
+ * reached:
+ * ENXIO  - The LCD has not been initialized. Call lcd_initialize() first.
+ * EINVAL - The line number specified is not in the range [0-7]
+ *
+ * \param line
+ *        The line on which to display the text [0-7]
+ * \param fmt
+ *        Format string
+ * \param ...
+ *        Optional list of arguments for the format string
+ *
+ * \return True if the operation was successful, or false otherwise, setting
+ * errno values as specified above.
+ */
+bool __attribute__((weak)) lcd_print(int16_t line, const char* fmt, ...)  {
+    return false;
+}
+
+#ifdef __cplusplus
+} // namespace c
+} // namespace pros
+} // extern "C"
+#endif//__cplusplus
+
+#endif // _PROS_LLEMU_H_