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betaflight/src/main/drivers/display.h
2023-04-21 00:15:04 +02:00

172 lines
7.3 KiB
C

/*
* This file is part of Cleanflight and Betaflight.
*
* Cleanflight and Betaflight are free software. You can redistribute
* this software and/or modify this software 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 and Betaflight are distributed in the hope that they
* 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 software.
*
* If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#define VIDEO_COLUMNS_SD 30
#define VIDEO_LINES_NTSC 13
#define VIDEO_LINES_PAL 16
typedef enum {
DISPLAYPORT_DEVICE_TYPE_MAX7456 = 0,
DISPLAYPORT_DEVICE_TYPE_OLED,
DISPLAYPORT_DEVICE_TYPE_MSP,
DISPLAYPORT_DEVICE_TYPE_FRSKYOSD,
DISPLAYPORT_DEVICE_TYPE_CRSF,
DISPLAYPORT_DEVICE_TYPE_HOTT,
DISPLAYPORT_DEVICE_TYPE_SRXL,
} displayPortDeviceType_e;
typedef enum {
DISPLAYPORT_SEVERITY_NORMAL = 0,
DISPLAYPORT_SEVERITY_INFO,
DISPLAYPORT_SEVERITY_WARNING,
DISPLAYPORT_SEVERITY_CRITICAL,
DISPLAYPORT_SEVERITY_COUNT,
} displayPortSeverity_e;
#define DISPLAYPORT_BLINK 0x80 // Device local blink bit or'ed into displayPortSeverity_e
// System elements rendered by VTX or Goggles
typedef enum {
DISPLAYPORT_SYS_GOGGLE_VOLTAGE = 0,
DISPLAYPORT_SYS_VTX_VOLTAGE = 1,
DISPLAYPORT_SYS_BITRATE = 2,
DISPLAYPORT_SYS_DELAY = 3,
DISPLAYPORT_SYS_DISTANCE = 4,
DISPLAYPORT_SYS_LQ = 5,
DISPLAYPORT_SYS_GOGGLE_DVR = 6,
DISPLAYPORT_SYS_VTX_DVR = 7,
DISPLAYPORT_SYS_WARNINGS = 8,
DISPLAYPORT_SYS_VTX_TEMP = 9,
DISPLAYPORT_SYS_FAN_SPEED = 10,
DISPLAYPORT_SYS_COUNT,
} displayPortSystemElement_e;
typedef enum {
DISPLAYPORT_LAYER_FOREGROUND,
DISPLAYPORT_LAYER_BACKGROUND,
DISPLAYPORT_LAYER_COUNT,
} displayPortLayer_e;
typedef enum {
DISPLAY_TRANSACTION_OPT_NONE = 0,
DISPLAY_TRANSACTION_OPT_PROFILED = 1 << 0,
DISPLAY_TRANSACTION_OPT_RESET_DRAWING = 1 << 1,
} displayTransactionOption_e;
typedef enum {
DISPLAY_BACKGROUND_TRANSPARENT,
DISPLAY_BACKGROUND_BLACK,
DISPLAY_BACKGROUND_GRAY,
DISPLAY_BACKGROUND_LTGRAY,
DISPLAY_BACKGROUND_COUNT // must be the last entry
} displayPortBackground_e;
typedef enum {
// Display drivers that can perform screen clearing in the background, e.g. via DMA, should do so.
// use `displayCheckReady` function to check if the screen clear has been completed.
DISPLAY_CLEAR_NONE = 0,
// * when set, the display driver should block until the screen clear has completed, use in synchronous cases
// only, e.g. where the screen is cleared and the display is immediately drawn to.
// * when NOT set, return immediately and do not block unless screen is a simple operation or cannot
// be performed in the background. As with any long delay, waiting can cause task starvation which
// can result in RX loss.
DISPLAY_CLEAR_WAIT = 1 << 0,
} displayClearOption_e;
struct displayCanvas_s;
struct osdCharacter_s;
struct displayPortVTable_s;
typedef struct displayPort_s {
const struct displayPortVTable_s *vTable;
void *device;
uint8_t rows;
uint8_t cols;
uint8_t posX;
uint8_t posY;
// CMS state
bool useFullscreen;
bool cleared;
int8_t cursorRow;
int8_t grabCount;
// Displayport device capability
bool useDeviceBlink;
// The type of display device
displayPortDeviceType_e deviceType;
} displayPort_t;
typedef struct displayPortVTable_s {
int (*grab)(displayPort_t *displayPort);
int (*release)(displayPort_t *displayPort);
int (*clearScreen)(displayPort_t *displayPort, displayClearOption_e options);
bool (*drawScreen)(displayPort_t *displayPort);
int (*screenSize)(const displayPort_t *displayPort);
int (*writeSys)(displayPort_t *displayPort, uint8_t x, uint8_t y, displayPortSystemElement_e systemElement);
int (*writeString)(displayPort_t *displayPort, uint8_t x, uint8_t y, uint8_t attr, const char *text);
int (*writeChar)(displayPort_t *displayPort, uint8_t x, uint8_t y, uint8_t attr, uint8_t c);
bool (*isTransferInProgress)(const displayPort_t *displayPort);
int (*heartbeat)(displayPort_t *displayPort);
void (*redraw)(displayPort_t *displayPort);
bool (*isSynced)(const displayPort_t *displayPort);
uint32_t (*txBytesFree)(const displayPort_t *displayPort);
bool (*layerSupported)(displayPort_t *displayPort, displayPortLayer_e layer);
bool (*layerSelect)(displayPort_t *displayPort, displayPortLayer_e layer);
bool (*layerCopy)(displayPort_t *displayPort, displayPortLayer_e destLayer, displayPortLayer_e sourceLayer);
bool (*writeFontCharacter)(displayPort_t *instance, uint16_t addr, const struct osdCharacter_s *chr);
bool (*checkReady)(displayPort_t *displayPort, bool rescan);
void (*beginTransaction)(displayPort_t *displayPort, displayTransactionOption_e opts);
void (*commitTransaction)(displayPort_t *displayPort);
bool (*getCanvas)(struct displayCanvas_s *canvas, const displayPort_t *displayPort);
void (*setBackgroundType)(displayPort_t *displayPort, displayPortBackground_e backgroundType);
} displayPortVTable_t;
void displayGrab(displayPort_t *instance);
void displayRelease(displayPort_t *instance);
void displayReleaseAll(displayPort_t *instance);
bool displayIsGrabbed(const displayPort_t *instance);
void displayClearScreen(displayPort_t *instance, displayClearOption_e options);
bool displayDrawScreen(displayPort_t *instance);
int displayScreenSize(const displayPort_t *instance);
void displaySetXY(displayPort_t *instance, uint8_t x, uint8_t y);
int displaySys(displayPort_t *instance, uint8_t x, uint8_t y, displayPortSystemElement_e systemElement);
int displayWrite(displayPort_t *instance, uint8_t x, uint8_t y, uint8_t attr, const char *text);
int displayWriteChar(displayPort_t *instance, uint8_t x, uint8_t y, uint8_t attr, uint8_t c);
bool displayIsTransferInProgress(const displayPort_t *instance);
bool displayHeartbeat(displayPort_t *instance);
void displayRedraw(displayPort_t *instance);
bool displayIsSynced(const displayPort_t *instance);
uint16_t displayTxBytesFree(const displayPort_t *instance);
bool displayWriteFontCharacter(displayPort_t *instance, uint16_t addr, const struct osdCharacter_s *chr);
bool displayCheckReady(displayPort_t *instance, bool rescan);
void displayBeginTransaction(displayPort_t *instance, displayTransactionOption_e opts);
void displayCommitTransaction(displayPort_t *instance);
bool displayGetCanvas(struct displayCanvas_s *canvas, const displayPort_t *instance);
void displayInit(displayPort_t *instance, const displayPortVTable_t *vTable, displayPortDeviceType_e deviceType);
bool displayLayerSupported(displayPort_t *instance, displayPortLayer_e layer);
bool displayLayerSelect(displayPort_t *instance, displayPortLayer_e layer);
bool displayLayerCopy(displayPort_t *instance, displayPortLayer_e destLayer, displayPortLayer_e sourceLayer);
void displaySetBackgroundType(displayPort_t *instance, displayPortBackground_e backgroundType);
bool displaySupportsOsdSymbols(displayPort_t *instance);