Jan Visser / DMSupport

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Display/Display.h@41:096931c776eb, 2018-10-26 (annotated)

Committer:
JVI_1556
Date:
Fri Oct 26 11:19:35 2018 +0000
Revision:
41:096931c776eb
Parent:
39:e1cb4dd9bfeb 
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:6b68dac0d986 1 /*
embeddedartists 0:6b68dac0d986 2 * Copyright 2014 Embedded Artists AB
embeddedartists 0:6b68dac0d986 3 *
embeddedartists 0:6b68dac0d986 4 * Licensed under the Apache License, Version 2.0 (the "License");
embeddedartists 0:6b68dac0d986 5 * you may not use this file except in compliance with the License.
embeddedartists 0:6b68dac0d986 6 * You may obtain a copy of the License at
embeddedartists 0:6b68dac0d986 7 *
embeddedartists 0:6b68dac0d986 8 * http://www.apache.org/licenses/LICENSE-2.0
embeddedartists 0:6b68dac0d986 9 *
embeddedartists 0:6b68dac0d986 10 * Unless required by applicable law or agreed to in writing, software
embeddedartists 0:6b68dac0d986 11 * distributed under the License is distributed on an "AS IS" BASIS,
embeddedartists 0:6b68dac0d986 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
embeddedartists 0:6b68dac0d986 13 * See the License for the specific language governing permissions and
embeddedartists 0:6b68dac0d986 14 * limitations under the License.
embeddedartists 0:6b68dac0d986 15 */
embeddedartists 0:6b68dac0d986 16
embeddedartists 0:6b68dac0d986 17 #ifndef DISPLAY_H
embeddedartists 0:6b68dac0d986 18 #define DISPLAY_H
embeddedartists 0:6b68dac0d986 19
embeddedartists 0:6b68dac0d986 20 #include "mbed.h"
embeddedartists 10:1ac4b213f0f7 21 #include "bios.h"
embeddedartists 0:6b68dac0d986 22
embeddedartists 9:a33326afd686 23 /**
embeddedartists 9:a33326afd686 24 * Display example
embeddedartists 9:a33326afd686 25 *
embeddedartists 9:a33326afd686 26 * @code
embeddedartists 9:a33326afd686 27 * #include "mbed.h"
embeddedartists 9:a33326afd686 28 * #include "DMBoard.h"
embeddedartists 9:a33326afd686 29 *
embeddedartists 9:a33326afd686 30 * int main(void) {
embeddedartists 9:a33326afd686 31 * // initialize the display
embeddedartists 9:a33326afd686 32 * DMBoard::instance().init();
embeddedartists 9:a33326afd686 33 *
embeddedartists 9:a33326afd686 34 * // allocate one framebuffer
embeddedartists 9:a33326afd686 35 * Display* disp = DMBoard::instance().display();
embeddedartists 9:a33326afd686 36 * uint16_t* fb = (uint16_t*)disp->allocateFramebuffer();
embeddedartists 9:a33326afd686 37 * if (fb == NULL) {
embeddedartists 9:a33326afd686 38 * DMBoard::instance().logger()->printf("Failed to allocate memory for framebuffer\r\n");
embeddedartists 9:a33326afd686 39 * mbed_die();
embeddedartists 9:a33326afd686 40 * }
embeddedartists 9:a33326afd686 41 *
embeddedartists 9:a33326afd686 42 * // draw something on the framebuffer
embeddedartists 9:a33326afd686 43 * ...
embeddedartists 9:a33326afd686 44 *
embeddedartists 9:a33326afd686 45 * // turn on the display
embeddedartists 9:a33326afd686 46 * disperr = disp->powerUp(fb);
embeddedartists 9:a33326afd686 47 * if (disperr != Display::Ok) {
embeddedartists 9:a33326afd686 48 * DMBoard::instance().logger()->printf("Failed to initialize the display, got error %d\r\n", disperr);
embeddedartists 9:a33326afd686 49 * mbed_die();
embeddedartists 9:a33326afd686 50 * }
embeddedartists 9:a33326afd686 51 *
embeddedartists 9:a33326afd686 52 * ...
embeddedartists 9:a33326afd686 53 * }
embeddedartists 9:a33326afd686 54 * @endcode
embeddedartists 9:a33326afd686 55 */
embeddedartists 0:6b68dac0d986 56 class Display {
embeddedartists 0:6b68dac0d986 57 public:
embeddedartists 0:6b68dac0d986 58 enum DisplayError {
embeddedartists 10:1ac4b213f0f7 59 DisplayError_Ok = BiosError_Ok,
embeddedartists 10:1ac4b213f0f7 60 DisplayError_ConfigError = BiosError_ConfigError,
embeddedartists 10:1ac4b213f0f7 61 DisplayError_WrongBPP = BiosError_WrongBPP,
embeddedartists 10:1ac4b213f0f7 62 DisplayError_InvalidParam = BiosError_InvalidParam,
embeddedartists 10:1ac4b213f0f7 63 DisplayError_NoInit = BiosError_NoInit,
embeddedartists 10:1ac4b213f0f7 64 DisplayError_CalibrationError = BiosError_Calibration,
embeddedartists 22:1a58a518435c 65 DisplayError_Timeout = BiosError_Timeout,
embeddedartists 22:1a58a518435c 66 DisplayError_TouchNotSupported = BiosError_NotSupported,
embeddedartists 10:1ac4b213f0f7 67 DisplayError_MemoryError,
embeddedartists 0:6b68dac0d986 68 };
embeddedartists 0:6b68dac0d986 69
embeddedartists 0:6b68dac0d986 70 enum Resolution {
embeddedartists 10:1ac4b213f0f7 71 Resolution_16bit_rgb565 = Res_16bit_rgb565,
embeddedartists 10:1ac4b213f0f7 72 Resolution_18bit_rgb666 = Res_18bit_rgb666,
embeddedartists 10:1ac4b213f0f7 73 Resolution_24bit_rgb888 = Res_24bit_rgb888,
embeddedartists 0:6b68dac0d986 74 };
embeddedartists 0:6b68dac0d986 75
embeddedartists 9:a33326afd686 76 /** Turns the display on with the specified framebuffer showing
embeddedartists 0:6b68dac0d986 77 *
alindvall 39:e1cb4dd9bfeb 78 * @param framebuffer the data to show
alindvall 39:e1cb4dd9bfeb 79 * @param res the resolution to use
alindvall 39:e1cb4dd9bfeb 80 * @param rate the frame rate to use
alindvall 39:e1cb4dd9bfeb 81 *
embeddedartists 0:6b68dac0d986 82 * @returns
embeddedartists 0:6b68dac0d986 83 * Ok on success
embeddedartists 0:6b68dac0d986 84 * An error code on failure
embeddedartists 0:6b68dac0d986 85 */
alindvall 39:e1cb4dd9bfeb 86 virtual DisplayError powerUp(void* framebuffer, Resolution res = Resolution_16bit_rgb565, FrameRate_t rate = FrameRate_Normal) = 0;
embeddedartists 0:6b68dac0d986 87
embeddedartists 9:a33326afd686 88 /** Turns the display off
embeddedartists 0:6b68dac0d986 89 *
embeddedartists 0:6b68dac0d986 90 * @returns
embeddedartists 0:6b68dac0d986 91 * Ok on success
embeddedartists 0:6b68dac0d986 92 * An error code on failure
embeddedartists 0:6b68dac0d986 93 */
embeddedartists 10:1ac4b213f0f7 94 virtual DisplayError powerDown() = 0;
embeddedartists 0:6b68dac0d986 95
embeddedartists 0:6b68dac0d986 96 /** Sets the backlight level. 0% is off and 100% is fully on
embeddedartists 0:6b68dac0d986 97 *
alindvall 39:e1cb4dd9bfeb 98 * @param percent backlight in %
alindvall 39:e1cb4dd9bfeb 99 *
embeddedartists 0:6b68dac0d986 100 * @returns
embeddedartists 0:6b68dac0d986 101 * Ok on success
embeddedartists 0:6b68dac0d986 102 * An error code on failure
embeddedartists 0:6b68dac0d986 103 */
embeddedartists 10:1ac4b213f0f7 104 virtual DisplayError backlight(int percent) = 0;
embeddedartists 0:6b68dac0d986 105
alindvall 39:e1cb4dd9bfeb 106 /** Returns the width (in pixels) of the display
alindvall 39:e1cb4dd9bfeb 107 *
alindvall 39:e1cb4dd9bfeb 108 * @returns the display width
alindvall 39:e1cb4dd9bfeb 109 */
embeddedartists 10:1ac4b213f0f7 110 virtual uint16_t width() = 0;
alindvall 39:e1cb4dd9bfeb 111
alindvall 39:e1cb4dd9bfeb 112 /** Returns the height (in pixels) of the display
alindvall 39:e1cb4dd9bfeb 113 *
alindvall 39:e1cb4dd9bfeb 114 * @returns the display height
alindvall 39:e1cb4dd9bfeb 115 */
embeddedartists 10:1ac4b213f0f7 116 virtual uint16_t height() = 0;
alindvall 39:e1cb4dd9bfeb 117
alindvall 39:e1cb4dd9bfeb 118 /** Returns the number of bytes used by each pixel
alindvall 39:e1cb4dd9bfeb 119 *
alindvall 39:e1cb4dd9bfeb 120 * @returns bytes per pixel
alindvall 39:e1cb4dd9bfeb 121 */
embeddedartists 10:1ac4b213f0f7 122 virtual uint16_t bytesPerPixel() = 0;
alindvall 39:e1cb4dd9bfeb 123
alindvall 39:e1cb4dd9bfeb 124 /** Returns the number of bytes used for each frame buffer
alindvall 39:e1cb4dd9bfeb 125 *
alindvall 39:e1cb4dd9bfeb 126 * @returns width*height*bytesPerPixel
alindvall 39:e1cb4dd9bfeb 127 */
embeddedartists 10:1ac4b213f0f7 128 virtual uint32_t fbSize() = 0;
alindvall 39:e1cb4dd9bfeb 129
alindvall 39:e1cb4dd9bfeb 130 /** Returns the display orientation
alindvall 39:e1cb4dd9bfeb 131 *
alindvall 39:e1cb4dd9bfeb 132 * @returns the display orientation
alindvall 39:e1cb4dd9bfeb 133 */
embeddedartists 10:1ac4b213f0f7 134 virtual bool landscape() = 0;
alindvall 39:e1cb4dd9bfeb 135
alindvall 39:e1cb4dd9bfeb 136 /** Returns true if the specified resolution can be used
alindvall 39:e1cb4dd9bfeb 137 *
alindvall 39:e1cb4dd9bfeb 138 * @returns true if supported, false if not
alindvall 39:e1cb4dd9bfeb 139 */
embeddedartists 10:1ac4b213f0f7 140 virtual bool isSupported(Resolution res) = 0;
alindvall 39:e1cb4dd9bfeb 141
alindvall 39:e1cb4dd9bfeb 142 /** Returns the current resolution
alindvall 39:e1cb4dd9bfeb 143 *
alindvall 39:e1cb4dd9bfeb 144 * @returns the current resolution
alindvall 39:e1cb4dd9bfeb 145 */
embeddedartists 10:1ac4b213f0f7 146 virtual Resolution currentResolution() = 0;
embeddedartists 9:a33326afd686 147
embeddedartists 9:a33326afd686 148 /** Replaces the current framebuffer.
embeddedartists 9:a33326afd686 149 *
embeddedartists 9:a33326afd686 150 * Note that this requires the caller or someone else to have a
embeddedartists 9:a33326afd686 151 * reference to the existing framebuffer, otherwise that memory
embeddedartists 9:a33326afd686 152 * is lost.
embeddedartists 9:a33326afd686 153 *
embeddedartists 9:a33326afd686 154 * @param buff the new framebuffer
embeddedartists 9:a33326afd686 155 */
embeddedartists 10:1ac4b213f0f7 156 virtual void setFramebuffer(void* buff) = 0;
embeddedartists 9:a33326afd686 157
embeddedartists 9:a33326afd686 158 /** Replaces the current framebuffer with the specified one.
embeddedartists 9:a33326afd686 159 *
embeddedartists 9:a33326afd686 160 * This function as opposed to the setFramebuffer() one does return
embeddedartists 9:a33326afd686 161 * the old framebuffer. This way the caller can save the old one and
embeddedartists 9:a33326afd686 162 * then swap it back when done.
embeddedartists 9:a33326afd686 163 *
embeddedartists 9:a33326afd686 164 * @param buff the new framebuffer
embeddedartists 9:a33326afd686 165 * @returns the old framebuffer
embeddedartists 9:a33326afd686 166 */
embeddedartists 10:1ac4b213f0f7 167 virtual void* swapFramebuffer(void* buff) = 0;
embeddedartists 9:a33326afd686 168
embeddedartists 9:a33326afd686 169 /** Allocate enough memory for one framebuffer
embeddedartists 9:a33326afd686 170 *
embeddedartists 9:a33326afd686 171 * This function is a to make it easier to allocate memory for framebuffers
embeddedartists 9:a33326afd686 172 * as the number of bytes needed depends on width, height and bytes per pixel.
embeddedartists 9:a33326afd686 173 *
embeddedartists 9:a33326afd686 174 * Free the allocated memory when done using the free() function.
embeddedartists 9:a33326afd686 175 *
embeddedartists 31:d47cffcb0a3e 176 * @param res the resolution (default is the one that the display is using)
embeddedartists 9:a33326afd686 177 * @returns a new framebuffer or NULL if out of memory
embeddedartists 9:a33326afd686 178 */
embeddedartists 10:1ac4b213f0f7 179 virtual void* allocateFramebuffer(Resolution res=Resolution_16bit_rgb565) = 0;
embeddedartists 31:d47cffcb0a3e 180
embeddedartists 31:d47cffcb0a3e 181 /** Allocate enough memory for one or more consequtive framebuffers
embeddedartists 31:d47cffcb0a3e 182 *
embeddedartists 31:d47cffcb0a3e 183 * This function is a to make it easier to allocate memory for framebuffers
embeddedartists 31:d47cffcb0a3e 184 * as the number of bytes needed depends on width, height and bytes per pixel.
embeddedartists 31:d47cffcb0a3e 185 *
embeddedartists 31:d47cffcb0a3e 186 * Free the allocated memory when done using the free() function.
embeddedartists 31:d47cffcb0a3e 187 *
embeddedartists 31:d47cffcb0a3e 188 * Use the default parameters to get one framebuffer for the display's current
embeddedartists 31:d47cffcb0a3e 189 * resolution.
embeddedartists 31:d47cffcb0a3e 190 *
embeddedartists 31:d47cffcb0a3e 191 * @param num the number of framebuffers, should be >= 1
embeddedartists 31:d47cffcb0a3e 192 * @param res the resolution (default is the one that the display is using)
embeddedartists 31:d47cffcb0a3e 193 * @returns new framebuffers or NULL if out of memory
embeddedartists 31:d47cffcb0a3e 194 */
embeddedartists 31:d47cffcb0a3e 195 virtual void* allocateFramebuffers(uint32_t num=1, Resolution res=Resolution_16bit_rgb565) = 0;
embeddedartists 0:6b68dac0d986 196 };
embeddedartists 0:6b68dac0d986 197
embeddedartists 0:6b68dac0d986 198 #endif