John Mitchell / lpc4088_displaymodule_Single_Photo

Single Photo displayed on LPC4088

Dependencies:   DMBasicGUI DMSupport

main.cpp@0:9140ec6aa604, 2017-07-28 (annotated)

Committer:
jmitc91516
Date:
Fri Jul 28 14:19:12 2017 +0000
Revision:
0:9140ec6aa604
Simple application that displays a single photograph on the LPC4088 display.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jmitc91516 0:9140ec6aa604 1 #include "mbed.h"
jmitc91516 0:9140ec6aa604 2 #include "DMBoard.h"
jmitc91516 0:9140ec6aa604 3 #include "lpc_swim.h"
jmitc91516 0:9140ec6aa604 4 #include "lpc_swim_font.h"
jmitc91516 0:9140ec6aa604 5
jmitc91516 0:9140ec6aa604 6 #include "GuiLib.h"
jmitc91516 0:9140ec6aa604 7 #include "GuiDisplay.h"
jmitc91516 0:9140ec6aa604 8
jmitc91516 0:9140ec6aa604 9 /*
jmitc91516 0:9140ec6aa604 10 Bodge so GuiDisplay.c ('easyGUIFixed' file) can call Thread::wait
jmitc91516 0:9140ec6aa604 11 (giving it an accurate millisecond timer)
jmitc91516 0:9140ec6aa604 12 */
jmitc91516 0:9140ec6aa604 13 extern "C" {
jmitc91516 0:9140ec6aa604 14 void EasyGUIWaitMs(GuiConst_INT32U msec)
jmitc91516 0:9140ec6aa604 15 {
jmitc91516 0:9140ec6aa604 16 Thread::wait(msec);
jmitc91516 0:9140ec6aa604 17 }
jmitc91516 0:9140ec6aa604 18 }
jmitc91516 0:9140ec6aa604 19
jmitc91516 0:9140ec6aa604 20 // Defined in GuiDisplay.c - set the display frame address at runtime
jmitc91516 0:9140ec6aa604 21 extern "C" {
jmitc91516 0:9140ec6aa604 22 void GuiDisplay_SetFrameAddress(void *newFrameAddress);
jmitc91516 0:9140ec6aa604 23 }
jmitc91516 0:9140ec6aa604 24
jmitc91516 0:9140ec6aa604 25 /*
jmitc91516 0:9140ec6aa604 26 Displays the specified easyGUI 'structure' (or page, to use a more easily understood term).
jmitc91516 0:9140ec6aa604 27
jmitc91516 0:9140ec6aa604 28 Args are: the index of the structure to be displayed,
jmitc91516 0:9140ec6aa604 29
jmitc91516 0:9140ec6aa604 30 No return code.
jmitc91516 0:9140ec6aa604 31 */
jmitc91516 0:9140ec6aa604 32 void DisplayEasyGuiStructure(int structureIndex)
jmitc91516 0:9140ec6aa604 33 {
jmitc91516 0:9140ec6aa604 34 GuiLib_Clear(); // Don't need this if we have drawn the background bitmap - it covers the entire screen
jmitc91516 0:9140ec6aa604 35
jmitc91516 0:9140ec6aa604 36 GuiLib_ShowScreen(structureIndex, GuiLib_NO_CURSOR, GuiLib_RESET_AUTO_REDRAW);
jmitc91516 0:9140ec6aa604 37
jmitc91516 0:9140ec6aa604 38 GuiLib_Refresh();
jmitc91516 0:9140ec6aa604 39
jmitc91516 0:9140ec6aa604 40 } // End of "DisplayEasyGUIStructure"
jmitc91516 0:9140ec6aa604 41
jmitc91516 0:9140ec6aa604 42 /*
jmitc91516 0:9140ec6aa604 43 Sets up the easyGUI user interface in an acceptable initial state.
jmitc91516 0:9140ec6aa604 44
jmitc91516 0:9140ec6aa604 45 No return code.
jmitc91516 0:9140ec6aa604 46 */
jmitc91516 0:9140ec6aa604 47 void InitEasyGUIDisplay(int initialEasyGUIPage)
jmitc91516 0:9140ec6aa604 48 {
jmitc91516 0:9140ec6aa604 49 // easyGUI stuff - note function calls require 'extern "C"' in relevant header
jmitc91516 0:9140ec6aa604 50
jmitc91516 0:9140ec6aa604 51 GuiDisplay_Lock();
jmitc91516 0:9140ec6aa604 52
jmitc91516 0:9140ec6aa604 53 GuiLib_Init();
jmitc91516 0:9140ec6aa604 54
jmitc91516 0:9140ec6aa604 55 DisplayEasyGuiStructure(initialEasyGUIPage);
jmitc91516 0:9140ec6aa604 56
jmitc91516 0:9140ec6aa604 57 // GuiLib_ShowBitmap(GuiStruct_Bitmap_DSC_1836Reduced, 40, 0, -1);
jmitc91516 0:9140ec6aa604 58
jmitc91516 0:9140ec6aa604 59 GuiDisplay_Unlock();
jmitc91516 0:9140ec6aa604 60 }
jmitc91516 0:9140ec6aa604 61
jmitc91516 0:9140ec6aa604 62
jmitc91516 0:9140ec6aa604 63 void InitialiseLPC4088(DMBoard* board, void **frameBufferAddress1, void **frameBufferAddress2)
jmitc91516 0:9140ec6aa604 64 {
jmitc91516 0:9140ec6aa604 65 RtosLog* log = board->logger();
jmitc91516 0:9140ec6aa604 66 Display* disp = board->display();
jmitc91516 0:9140ec6aa604 67
jmitc91516 0:9140ec6aa604 68 DMBoard::BoardError err;
jmitc91516 0:9140ec6aa604 69
jmitc91516 0:9140ec6aa604 70 do {
jmitc91516 0:9140ec6aa604 71 err = board->init();
jmitc91516 0:9140ec6aa604 72 if (err != DMBoard::Ok) {
jmitc91516 0:9140ec6aa604 73 log->printf("Failed to initialize the board, got error %d\r\n", err);
jmitc91516 0:9140ec6aa604 74 break;
jmitc91516 0:9140ec6aa604 75 }
jmitc91516 0:9140ec6aa604 76
jmitc91516 0:9140ec6aa604 77
jmitc91516 0:9140ec6aa604 78 #define COLOR_FLICKERING_FIX_1
jmitc91516 0:9140ec6aa604 79 #ifdef COLOR_FLICKERING_FIX_1
jmitc91516 0:9140ec6aa604 80 // Possible fix for display flickering on LPC4088
jmitc91516 0:9140ec6aa604 81 uint32_t* reg = ((uint32_t*)0x400fc188);
jmitc91516 0:9140ec6aa604 82 *reg |= (3<<10);
jmitc91516 0:9140ec6aa604 83 #undef COLOR_FLICKERING_FIX_1
jmitc91516 0:9140ec6aa604 84 #endif
jmitc91516 0:9140ec6aa604 85 log->printf("\n\nHello World!\n\n");
jmitc91516 0:9140ec6aa604 86
jmitc91516 0:9140ec6aa604 87 void* fb = disp->allocateFramebuffer();
jmitc91516 0:9140ec6aa604 88 if (fb == NULL) {
jmitc91516 0:9140ec6aa604 89 log->printf("Failed to allocate memory for a frame buffer\r\n");
jmitc91516 0:9140ec6aa604 90 err = DMBoard::MemoryError;
jmitc91516 0:9140ec6aa604 91 break;
jmitc91516 0:9140ec6aa604 92 }
jmitc91516 0:9140ec6aa604 93
jmitc91516 0:9140ec6aa604 94 *frameBufferAddress1 = fb;
jmitc91516 0:9140ec6aa604 95
jmitc91516 0:9140ec6aa604 96 // Allocate a second frame buffer - what will its address be?
jmitc91516 0:9140ec6aa604 97 void* fb2 = disp->allocateFramebuffer();
jmitc91516 0:9140ec6aa604 98 *frameBufferAddress2 = fb2;
jmitc91516 0:9140ec6aa604 99
jmitc91516 0:9140ec6aa604 100 Display::DisplayError disperr;
jmitc91516 0:9140ec6aa604 101 // disperr = disp->powerUp(fb, Display::Resolution_24bit_rgb888);
jmitc91516 0:9140ec6aa604 102 // Start display in default mode (16-bit) (24-bit uses too much memory)
jmitc91516 0:9140ec6aa604 103 #define COLOR_FLICKERING_FIX_2
jmitc91516 0:9140ec6aa604 104 #ifdef COLOR_FLICKERING_FIX_2
jmitc91516 0:9140ec6aa604 105 // Second possible fix for colour flickering problem,
jmitc91516 0:9140ec6aa604 106 // suggested by Embedded Artists - specify low frame rate
jmitc91516 0:9140ec6aa604 107 disp->powerDown();
jmitc91516 0:9140ec6aa604 108 disperr = disp->powerUp(fb, Display::Resolution_16bit_rgb565, FrameRate_Low);
jmitc91516 0:9140ec6aa604 109 #undef COLOR_FLICKERING_FIX_2
jmitc91516 0:9140ec6aa604 110 #else
jmitc91516 0:9140ec6aa604 111 disperr = disp->powerUp(fb);
jmitc91516 0:9140ec6aa604 112 #endif
jmitc91516 0:9140ec6aa604 113 if (disperr != Display::DisplayError_Ok) {
jmitc91516 0:9140ec6aa604 114 log->printf("Failed to initialize the display, got error %d\r\n", disperr);
jmitc91516 0:9140ec6aa604 115 break;
jmitc91516 0:9140ec6aa604 116 }
jmitc91516 0:9140ec6aa604 117
jmitc91516 0:9140ec6aa604 118 } while(false);
jmitc91516 0:9140ec6aa604 119
jmitc91516 0:9140ec6aa604 120 if (err != DMBoard::Ok) {
jmitc91516 0:9140ec6aa604 121 log->printf("\nTERMINATING\n");
jmitc91516 0:9140ec6aa604 122 wait_ms(2000); // allow RtosLog to flush messages
jmitc91516 0:9140ec6aa604 123 mbed_die();
jmitc91516 0:9140ec6aa604 124 }
jmitc91516 0:9140ec6aa604 125 }
jmitc91516 0:9140ec6aa604 126
jmitc91516 0:9140ec6aa604 127 int main()
jmitc91516 0:9140ec6aa604 128 {
jmitc91516 0:9140ec6aa604 129 DMBoard* board = &DMBoard::instance();
jmitc91516 0:9140ec6aa604 130 RtosLog* log = board->logger();
jmitc91516 0:9140ec6aa604 131 Display* disp = board->display();
jmitc91516 0:9140ec6aa604 132
jmitc91516 0:9140ec6aa604 133 void *frameBuffer1;
jmitc91516 0:9140ec6aa604 134 void *frameBuffer2;
jmitc91516 0:9140ec6aa604 135 InitialiseLPC4088(board, &frameBuffer1, &frameBuffer2);
jmitc91516 0:9140ec6aa604 136 GuiDisplay_SetFrameAddress(frameBuffer1);
jmitc91516 0:9140ec6aa604 137
jmitc91516 0:9140ec6aa604 138 InitEasyGUIDisplay(GuiStruct_Demo_0);
jmitc91516 0:9140ec6aa604 139
jmitc91516 0:9140ec6aa604 140 while(true) {
jmitc91516 0:9140ec6aa604 141 }
jmitc91516 0:9140ec6aa604 142 }