src/main/drivers/max7456.h

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #pragma once
  19
  20 #include <stdbool.h>
  21
  22 #include "drivers/osd.h"
  23
  24 #ifndef MAX7456_WHITEBRIGHTNESS
  25   #define MAX7456_WHITEBRIGHTNESS 0x01
  26 #endif
  27 #ifndef MAX7456_BLACKBRIGHTNESS
  28   #define MAX7456_BLACKBRIGHTNESS 0x00
  29 #endif
  30
  31 #define MAX7456_BWBRIGHTNESS ((MAX7456_BLACKBRIGHTNESS << 2) | MAX7456_WHITEBRIGHTNESS)
  32
  33 #define MAX7456_CHARS_PER_LINE          30
  34
  35 /** PAL or NTSC, value is number of chars total */
  36 #define MAX7456_LINES_NTSC          13
  37 #define MAX7456_LINES_PAL           16
  38 #define MAX7456_BUFFER_CHARS_NTSC   (MAX7456_LINES_NTSC * MAX7456_CHARS_PER_LINE)
  39 #define MAX7456_BUFFER_CHARS_PAL    (MAX7456_LINES_PAL * MAX7456_CHARS_PER_LINE)
  40
  41 enum VIDEO_TYPES { AUTO = 0, PAL, NTSC };
  42
  43 #define MAX7456_MODE_INVERT   (1 << 3)
  44 #define MAX7456_MODE_BLINK    (1 << 4)
  45 #define MAX7456_MODE_SOLID_BG (1 << 5)
  46
  47 void max7456Init(const videoSystem_e videoSystem);
  48 void max7456Update(void);
  49 void max7456ReadNvm(uint16_t char_address, osdCharacter_t *chr);
  50 void max7456WriteNvm(uint16_t char_address, const osdCharacter_t *chr);
  51 uint16_t max7456GetScreenSize(void);
  52 uint8_t max7456GetRowsCount(void);
  53 void max7456Write(uint8_t x, uint8_t y, const char *buff, uint8_t mode);
  54 void max7456WriteChar(uint8_t x, uint8_t y, uint16_t c, uint8_t mode);
  55 bool max7456ReadChar(uint8_t x, uint8_t y, uint16_t *c, uint8_t *mode);
  56 void max7456ClearScreen(void);
  57 void max7456RefreshAll(void);
  58 uint8_t* max7456GetScreenBuffer(void);