Add displaying T @ oLED screen

STM32/Tcalc_screen/ssd1306.h

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+/*
+ *                                                                                                  geany_encoding=koi8-r
+ * ssd1306.h
+ *
+ * Copyright 2018 Edward V. Emelianov <eddy@sao.ru, edward.emelianoff@gmail.com>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ *
+ */
+#pragma once
+#ifndef __SSD1306_H__
+#define __SSD1306_H__
+
+#include "ssd1306_fonts.h"
+
+// SSD1306 OLED height in pixels
+#ifndef SSD1306_HEIGHT
+#define SSD1306_HEIGHT          64
+#endif
+
+// SSD1306 width in pixels
+#ifndef SSD1306_WIDTH
+#define SSD1306_WIDTH           128
+#endif
+
+void ssd1306_process();
+uint8_t ssd1306_UpdateScreen();
+void ssd1306_Reset();
+
+void ssd1306_DrawPixel(uint8_t x, uint8_t y, uint8_t color);
+char ssd1306_WriteChar(char ch, FontDef Font, uint8_t color);
+void ssd1306_Fill(uint8_t colr);
+
+char ssd1306_WriteString(char* str, FontDef Font, uint8_t color);
+void ssd1306_SetCursor(uint8_t x, uint8_t y);
+
+#endif // __SSD1306_H__