139 lines
4.2 KiB
C++
139 lines
4.2 KiB
C++
// Pi1541 - A Commodore 1541 disk drive emulator
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// Copyright(C) 2018 Stephen White
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//
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// This file is part of Pi1541.
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//
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// Pi1541 is free software : you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Pi1541 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Pi1541. If not, see <http://www.gnu.org/licenses/>.
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#ifndef SSD1306_H
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#define SSD1306_H
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#include "types.h"
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extern "C"
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{
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#include "rpi-i2c.h"
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}
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// 8 pages * (128 columns * 8 bits)
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//0 127 0 127
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//0 127 0 127
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//0 127 0 127
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//________________________________________________________
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//7777777 | 7
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//6666666 | 6
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//5555555 | 5
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//4444444 PG(ROW)0 | PG(ROW)1 4
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//3333333 | 3
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//2222222 | 2
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//1111111 | 1
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//0000000 | 0
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//________________________________________________________
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//7777777 | 7
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//6666666 | 6
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//5555555 | 5
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//4444444 PG(ROW)2 | PG(ROW)3 4
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//3333333 | 3
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//2222222 | 2
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//1111111 | 1
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//0000000 | 0
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//________________________________________________________
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//7777777 | 7
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//6666666 | 6
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//5555555 | 5
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//4444444 PG(ROW)4 | PG(ROW)5 4
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//3333333 | 3
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//2222222 | 2
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//1111111 | 1
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//0000000 | 0
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//________________________________________________________
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//7777777 | 7
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//6666666 | 6
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//5555555 | 5
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//4444444 PG(ROW)6 | PG(ROW)7 4
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//3333333 | 3
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//2222222 | 2
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//1111111 | 1
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//0000000 | 0
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//________________________________________________________
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#define SSD1306_LCDWIDTH 128
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#define SSD1306_LCDHEIGHT 64
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#define SSD1306_128x64_BYTES ((SSD1306_LCDWIDTH * SSD1306_LCDHEIGHT) / 8)
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class SSD1306
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{
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public:
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// 128x32 0x3C
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// 128x64 0x3D or 0x3C (if SA0 is grounded)
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SSD1306(int BSCMaster = 1, u8 address = 0x3C, int flip = 0, int type=1306);
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void PlotCharacter(int x, int y, char ascii, bool inverse);
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void Plottext(int x, int y, char* str, bool inverse);
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void InitHardware();
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void DisplayOn();
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void DisplayOff();
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void SetContrast(u8 value);
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u8 GetContrast() { return contrast; }
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void SetVCOMDeselect(u8 value);
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void ClearScreen();
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void RefreshScreen();
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void RefreshPage(u32 page);
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void RefreshRows(u32 start, u32 amountOfRows);
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void SetDisplayWindow(u8 x1, u8 y1, u8 x2, u8 y2);
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void PlotPixel(int x, int y, int c);
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void PlotImage(const unsigned char * source);
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protected:
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void SendCommand(u8 command);
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void SendData(u8 data);
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void Home();
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void MoveCursorByte(u8 row, u8 col);
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void MoveCursorCharacter(u8 row, u8 col);
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unsigned char frame[SSD1306_128x64_BYTES];
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int BSCMaster;
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u8 address;
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int type;
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int flip;
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int contrast;
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};
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#endif
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#define SSD1306_CMD_SET_MEMORY_ADDRESSING_MODE 0x20
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#define SSD1306_CMD_SET_COLUMN_ADDRESS 0x21
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#define SSD1306_CMD_SET_PAGE_ADDRESS 0x22
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#define SSD1306_CMD_DEACTIVATE_SCROLL 0x2E
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#define SSD1306_CMD_ACTIVATE_SCROLL 0x2F
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#define SSD1306_CMD_SET_CONTRAST_CONTROL 0x81 // Set Contrast Control for BANK0
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#define SSD1306_ENABLE_CHARGE_PUMP 0x8D
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#define SSD1306_CMD_ENTIRE_DISPLAY_ON 0xA4
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#define SSD1306_CMD_ENTIRE_DISPLAY_OFF 0xA5
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#define SSD1306_CMD_NORMAL_DISPLAY 0xA6 // 1 = on pixel
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#define SSD1306_CMD_INVERT_DISPLAY 0xA7 // 0 = on pixel
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#define SSD1306_CMD_DISPLAY_OFF 0xAE
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#define SSD1306_CMD_DISPLAY_ON 0xAF
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#define SSD1306_CMD_MULTIPLEX_RATIO 0xA8
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#define SSD1306_CMD_SET_START_LINE 0x40
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#define SSD1306_CMD_SET_DISPLAY_OFFSET 0xD3
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#define SSD1306_CMD_SET_DISPLAY_CLOCK_DIVIDE_RATIO 0xD5
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#define SSD1306_CMD_SET_PRE_CHARGE_PERIOD 0xD9
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#define SSD1306_CMD_SET_COM_PINS 0xDA
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#define SSD1306_CMD_SET_VCOMH_DESELECT_LEVEL 0xDB
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#define SSD1306_CONTROL_REG 0x00
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#define SSD1306_DATA_REG 0x40
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