Chris Womack / DMSupport

mbed support for LPC4088 Display Module

Dependencies:   DM_FATFileSystem DM_HttpServer DM_USBHost EthernetInterface USBDevice mbed-rpc mbed-rtos mbed-src

Dependents:   emptyProgram

Fork of DMSupport by Embedded Artists

Display/Display.h@10:1ac4b213f0f7, 2014-12-19 (annotated)

Committer:
embeddedartists
Date:
Fri Dec 19 09:03:25 2014 +0100
Revision:
10:1ac4b213f0f7
Parent:
9:a33326afd686
Child:
22:1a58a518435c
- Added support for executing code in SDRAM.

- Restructured the Display/Touch interfaces.

- Added loading of Display/Touch BIOS.

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 10:1ac4b213f0f7 65 DisplayError_MemoryError,
embeddedartists 0:6b68dac0d986 66 };
embeddedartists 0:6b68dac0d986 67
embeddedartists 0:6b68dac0d986 68 enum Resolution {
embeddedartists 10:1ac4b213f0f7 69 Resolution_16bit_rgb565 = Res_16bit_rgb565,
embeddedartists 10:1ac4b213f0f7 70 Resolution_18bit_rgb666 = Res_18bit_rgb666,
embeddedartists 10:1ac4b213f0f7 71 Resolution_24bit_rgb888 = Res_24bit_rgb888,
embeddedartists 0:6b68dac0d986 72 };
embeddedartists 0:6b68dac0d986 73
embeddedartists 9:a33326afd686 74 /** Turns the display on with the specified framebuffer showing
embeddedartists 0:6b68dac0d986 75 *
embeddedartists 0:6b68dac0d986 76 * @returns
embeddedartists 0:6b68dac0d986 77 * Ok on success
embeddedartists 0:6b68dac0d986 78 * An error code on failure
embeddedartists 0:6b68dac0d986 79 */
embeddedartists 10:1ac4b213f0f7 80 virtual DisplayError powerUp(void* framebuffer, Resolution wanted = Resolution_16bit_rgb565) = 0;
embeddedartists 0:6b68dac0d986 81
embeddedartists 9:a33326afd686 82 /** Turns the display off
embeddedartists 0:6b68dac0d986 83 *
embeddedartists 0:6b68dac0d986 84 * @returns
embeddedartists 0:6b68dac0d986 85 * Ok on success
embeddedartists 0:6b68dac0d986 86 * An error code on failure
embeddedartists 0:6b68dac0d986 87 */
embeddedartists 10:1ac4b213f0f7 88 virtual DisplayError powerDown() = 0;
embeddedartists 0:6b68dac0d986 89
embeddedartists 0:6b68dac0d986 90 /** Sets the backlight level. 0% is off and 100% is fully on
embeddedartists 0:6b68dac0d986 91 *
embeddedartists 0:6b68dac0d986 92 * @returns
embeddedartists 0:6b68dac0d986 93 * Ok on success
embeddedartists 0:6b68dac0d986 94 * An error code on failure
embeddedartists 0:6b68dac0d986 95 */
embeddedartists 10:1ac4b213f0f7 96 virtual DisplayError backlight(int percent) = 0;
embeddedartists 0:6b68dac0d986 97
embeddedartists 10:1ac4b213f0f7 98 virtual uint16_t width() = 0;
embeddedartists 10:1ac4b213f0f7 99 virtual uint16_t height() = 0;
embeddedartists 10:1ac4b213f0f7 100 virtual uint16_t bytesPerPixel() = 0;
embeddedartists 10:1ac4b213f0f7 101 virtual uint32_t fbSize() = 0;
embeddedartists 10:1ac4b213f0f7 102 virtual bool landscape() = 0;
embeddedartists 10:1ac4b213f0f7 103 virtual bool isSupported(Resolution res) = 0;
embeddedartists 10:1ac4b213f0f7 104 virtual Resolution currentResolution() = 0;
embeddedartists 9:a33326afd686 105
embeddedartists 9:a33326afd686 106 /** Replaces the current framebuffer.
embeddedartists 9:a33326afd686 107 *
embeddedartists 9:a33326afd686 108 * Note that this requires the caller or someone else to have a
embeddedartists 9:a33326afd686 109 * reference to the existing framebuffer, otherwise that memory
embeddedartists 9:a33326afd686 110 * is lost.
embeddedartists 9:a33326afd686 111 *
embeddedartists 9:a33326afd686 112 * @param buff the new framebuffer
embeddedartists 9:a33326afd686 113 */
embeddedartists 10:1ac4b213f0f7 114 virtual void setFramebuffer(void* buff) = 0;
embeddedartists 9:a33326afd686 115
embeddedartists 9:a33326afd686 116 /** Replaces the current framebuffer with the specified one.
embeddedartists 9:a33326afd686 117 *
embeddedartists 9:a33326afd686 118 * This function as opposed to the setFramebuffer() one does return
embeddedartists 9:a33326afd686 119 * the old framebuffer. This way the caller can save the old one and
embeddedartists 9:a33326afd686 120 * then swap it back when done.
embeddedartists 9:a33326afd686 121 *
embeddedartists 9:a33326afd686 122 * @param buff the new framebuffer
embeddedartists 9:a33326afd686 123 * @returns the old framebuffer
embeddedartists 9:a33326afd686 124 */
embeddedartists 10:1ac4b213f0f7 125 virtual void* swapFramebuffer(void* buff) = 0;
embeddedartists 9:a33326afd686 126
embeddedartists 9:a33326afd686 127 /** Allocate enough memory for one framebuffer
embeddedartists 9:a33326afd686 128 *
embeddedartists 9:a33326afd686 129 * This function is a to make it easier to allocate memory for framebuffers
embeddedartists 9:a33326afd686 130 * as the number of bytes needed depends on width, height and bytes per pixel.
embeddedartists 9:a33326afd686 131 *
embeddedartists 9:a33326afd686 132 * Free the allocated memory when done using the free() function.
embeddedartists 9:a33326afd686 133 *
embeddedartists 9:a33326afd686 134 * @returns a new framebuffer or NULL if out of memory
embeddedartists 9:a33326afd686 135 */
embeddedartists 10:1ac4b213f0f7 136 virtual void* allocateFramebuffer(Resolution res=Resolution_16bit_rgb565) = 0;
embeddedartists 0:6b68dac0d986 137 };
embeddedartists 0:6b68dac0d986 138
embeddedartists 0:6b68dac0d986 139 #endif