Embedded Artists / lpc4088_displaymodule_hello_world

Template for creating new programs for the LPC4088 Display Module

Dependencies:   DMBasicGUI DMSupport

Fork of lpc4088_displaymodule_hello_world by EmbeddedArtists AB

A minimal example showing how to initialize the display module and draw a message on the display.

This project can be selected as a template when creating a new project based on the LPC4088 Display Module.

Information

This project works on both the 4.3" and 5" display modules.

This is what it looks like:

/media/uploads/embeddedartists/hello_cap_000.png

main.cpp@7:791d32dd9dd9, 2019-10-23 (annotated)

Committer:
embeddedartists
Date:
Wed Oct 23 07:00:18 2019 +0000
Revision:
7:791d32dd9dd9
Parent:
0:8ef5f57e33dc 
Updates related to mbed OS 5

Who changed what in which revision?

UserRevisionLine numberNew contents of line
embeddedartists 0:8ef5f57e33dc 1 #include "mbed.h"
embeddedartists 7:791d32dd9dd9 2 #include "platform/mbed_thread.h"
embeddedartists 0:8ef5f57e33dc 3 #include "DMBoard.h"
embeddedartists 0:8ef5f57e33dc 4 #include "lpc_swim.h"
embeddedartists 0:8ef5f57e33dc 5 #include "lpc_swim_font.h"
embeddedartists 0:8ef5f57e33dc 6
embeddedartists 0:8ef5f57e33dc 7 int main()
embeddedartists 0:8ef5f57e33dc 8 {
embeddedartists 7:791d32dd9dd9 9
embeddedartists 0:8ef5f57e33dc 10 DMBoard::BoardError err;
embeddedartists 0:8ef5f57e33dc 11 DMBoard* board = &DMBoard::instance();
embeddedartists 0:8ef5f57e33dc 12 RtosLog* log = board->logger();
embeddedartists 0:8ef5f57e33dc 13 Display* disp = board->display();
embeddedartists 7:791d32dd9dd9 14
embeddedartists 0:8ef5f57e33dc 15 do {
embeddedartists 0:8ef5f57e33dc 16 err = board->init();
embeddedartists 0:8ef5f57e33dc 17 if (err != DMBoard::Ok) {
embeddedartists 0:8ef5f57e33dc 18 log->printf("Failed to initialize the board, got error %d\r\n", err);
embeddedartists 0:8ef5f57e33dc 19 break;
embeddedartists 0:8ef5f57e33dc 20 }
embeddedartists 0:8ef5f57e33dc 21
embeddedartists 0:8ef5f57e33dc 22 log->printf("\n\nHello World!\n\n");
embeddedartists 0:8ef5f57e33dc 23
embeddedartists 0:8ef5f57e33dc 24 SWIM_WINDOW_T win;
embeddedartists 0:8ef5f57e33dc 25 void* fb = disp->allocateFramebuffer();
embeddedartists 0:8ef5f57e33dc 26 if (fb == NULL) {
embeddedartists 0:8ef5f57e33dc 27 log->printf("Failed to allocate memory for a frame buffer\r\n");
embeddedartists 0:8ef5f57e33dc 28 err = DMBoard::MemoryError;
embeddedartists 0:8ef5f57e33dc 29 break;
embeddedartists 0:8ef5f57e33dc 30 }
embeddedartists 7:791d32dd9dd9 31
embeddedartists 0:8ef5f57e33dc 32 // Prepare fullscreen
embeddedartists 0:8ef5f57e33dc 33 swim_window_open(&win,
embeddedartists 0:8ef5f57e33dc 34 disp->width(), disp->height(), // full size
embeddedartists 0:8ef5f57e33dc 35 (COLOR_T*)fb,
embeddedartists 0:8ef5f57e33dc 36 0,0,disp->width()-1, disp->height()-1, // window position and size
embeddedartists 0:8ef5f57e33dc 37 1, // border
embeddedartists 0:8ef5f57e33dc 38 WHITE, BLUE, BLACK); // colors: pen, backgr, forgr
embeddedartists 0:8ef5f57e33dc 39 swim_set_title(&win, "My Program", BLACK);
embeddedartists 0:8ef5f57e33dc 40
embeddedartists 0:8ef5f57e33dc 41 // Message
embeddedartists 7:791d32dd9dd9 42 swim_put_text_xy(&win, "Hello World!", 100, 100);
embeddedartists 7:791d32dd9dd9 43
embeddedartists 0:8ef5f57e33dc 44 // Start display in default mode (16-bit)
embeddedartists 7:791d32dd9dd9 45 Display::DisplayError disperr = disp->powerUp(fb);
embeddedartists 0:8ef5f57e33dc 46 if (disperr != Display::DisplayError_Ok) {
embeddedartists 0:8ef5f57e33dc 47 log->printf("Failed to initialize the display, got error %d\r\n", disperr);
embeddedartists 0:8ef5f57e33dc 48 break;
embeddedartists 0:8ef5f57e33dc 49 }
embeddedartists 7:791d32dd9dd9 50
embeddedartists 0:8ef5f57e33dc 51 } while(false);
embeddedartists 0:8ef5f57e33dc 52
embeddedartists 0:8ef5f57e33dc 53 if (err != DMBoard::Ok) {
embeddedartists 0:8ef5f57e33dc 54 log->printf("\nTERMINATING\n");
embeddedartists 7:791d32dd9dd9 55 thread_sleep_for(2000); // allow RtosLog to flush messages
embeddedartists 0:8ef5f57e33dc 56 mbed_die();
embeddedartists 0:8ef5f57e33dc 57 }
embeddedartists 0:8ef5f57e33dc 58
embeddedartists 0:8ef5f57e33dc 59 while(true) {
embeddedartists 0:8ef5f57e33dc 60 }
embeddedartists 0:8ef5f57e33dc 61 }